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Compact NSX 100-630 A - User Manual

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1. pmiLvasis0e gt Ed Service IM Basic prot E alarms EET Outputs B Breaker 170 ER interface Breaker Status amp Control Module Communicating Motor mechari fn module Total OF counter E E n Contact counter Threshold Commands Counter oF 5000 Gi Threshold Close Reset 1 Data made available to all devices equipped with a BSCM module 2 Additional data made available to devices equipped with a BSCM module and a communicating motor mechanism 3 Simplified schematic of communicating motor mechanism For more details on the list of alarms and configuration options see Maintenance Module Connected to a PC With RSU Software page 119 and the Micrologic 5 and 6 trip units User manual Data Made Available by the BSCM Module For all Compact NSX circuit breakers the BSCM module provides the following information Information Configurable Count of the total number of times the Compact NSX circuit breaker opens and closes count of OF No contact operations This counter totalizer cannot be reset Count of the total number of times the Compact NSX circuit breaker opens and closes count of OF Yes contact operations 1 Maximum number of times the device can open and close 2 Yes Count of the number of fault trips by the Compact NSX circuit breaker count of SD contact Yes operations 1 Count of
2. Section Topic Page 1 1 Quick Overview of Your Circuit Breaker 10 1 2 Your Manually Operated Circuit Breaker With Toggle Switch 18 1 3 Your Circuit Breaker With Rotary Handle 23 1 4 Your Circuit Breaker With Motor Mechanism 33 LV434101 04 2012 Description of the Compact NSX Circuit Breaker 1 1 Quick Overview of Your Circuit Breaker Aim This section briefly describes e The Compact NSX circuit breaker functions e Where to find the information and performance relating to your circuit breaker e How to carry out the main operations on your circuit breaker What Is in This Section This section contains the following topics Topic Page The Main Compact NSX Circuit Breaker Functions 11 Identification of Compact NSX Circuit Breakers 12 Operating the Switchgear When Energized 14 De Energizing the Switchgear 16 LV434101 04 2012 Description of the Compact NSX Circuit Breaker The Main Compact NSX Circuit Breaker Functions Choice of Numerous Functions that can be Adapted on Site The design of Compact NSX circuit breakers offers a wide choice of functions They are very easy to use These functions can be adapted on site OANOO BRAWN Toggle switch Rotary handles Motor mechanism Associated equipment Micrologic electronic trip units TM D thermal magnetic trip unit Vigi earth leakage protection module Micrologic trip unit auxilia
3. 0000 e eee eee How to Test Your Circuit Breaker With Direct Rotary Handle lslsesslssse How to Lock Your Circuit Breaker With Direct Rotary Handle lesse How to Test Your Circuit Breaker With Extended Rotary Handle llus How to Lock Your Circuit Breaker With Extended Rotary Handle llus Your Circuit Breaker With Motor Mechanism 0 00 0c cece cence eee eee Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker How to Open Close and Reset Your Circuit Breaker With Motor Mechanism How to Open Close and Reset Your Circuit Breaker With Communicating Motor Mechanism 00 0 eee How to Lock Your Circuit Breaker Equipment Associated With Your Circuit Breaker Plug in Base for Compact NSX Circuit Breaker a asana naaraana Withdrawable Chassis for Compact NSX 1 0 20 cette eee Indication Contacts SDx Module Micrologic 2 5 and 6 SDTAM Module Micrologic 2 M and 6 BSCM Module 5 NSX COI facies nc wera eta Isolated NSX Cord Control Auxiliaries Other Accessories Summary Tables of Auxiliaries Description of Trip Units Fault Currents and Trip Units Applications 4 Fault Currents in Electrical Distribution EM e i uu uut Protection Against Overcurrents
4. Checking the setting values on the display unit for Micrologic 5 and 6 trip units 2 Use the navigation buttons to display the Reading protection parameters mode see Micrologic 5 and 6 Electronic Trip Units page 95 3 Scroll down and check the values of the different settings Micrologic 5 trip unit Ir A IN A if present long time tr s Isd A IN A if present short time tsd ms with without I t li A The settings can be modified The screen backlighting is not activated so as to optimize battery life 4 hours Inhibit Thermal Memory Function Maintenance Level IV The nhibit thermal memory button temporarily cancels the thermal memory see page 88 This inhibition is necessary in order to obtain a true measurement of the long time protection time delay tr during tripping tests by primary current injection This operation forms part of maintenance level IV It is reserved for a specialist maintenance service see Maintaining the Compact NSX During Operation page 131 To carry out the test after preparing the equipment Step Action 1 Switch the circuit breaker to the ON position 2 Move the slide switch to the OFF position center Inhibiting the thermal memory 3 Press the button for inhibiting the thermal memory using the stylus 4 The yellow confirmation LED and the green LED light up The thermal memory on the trip unit is inhibited for 15 mi
5. piece of equipment e t may be necessary to disconnect electronic equipment NOTE Micrologic trip units do not need to be disconnected even if equipped with voltage measurement ENVT option 126 LV434101 04 2012 Operating the Compact NSX A Insulation and Dielectric Strength Tests on Vigi Modules Vigi modules are electronic devices which do need to be disconnected before dielectric tests CAUTION RISK OF EQUIPMENT DAMAGE Disconnect the protective cover on the front of the Vigi module Failure to follow these instructions can result in injury or equipment damage Disconnecting Vigi modules diagram 1 A Vigi module is disconnected automatically by removing the protective cover for the connections on the front Reconnecting Vigi modules diagram 2 Following dielectric tests it is essential to put the protective cover for the connections back in place A amp DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH e Apply appropriate personal protective equipment PPE and follow safe electrical work practices e This equipment must be installed and serviced by qualified electrical personnel e Disconnect all power sources before performing maintenance inspections Assume that all circuits are live until they are completely de energized tested grounded and tagged Consider all sources of power including the possibility of backfeeding and control power e Always use a
6. recommended cable Belden 8441 or equivalent B4 A1 motor mechanism power supply E ENVT external neutral voltage tap for connection to the BSCM breaker status and control module neutral via a 3P circuit breaker 140 LV434101 04 2012 Connection Diagrams DB115708 eps amp Open amp Closed Q Fault Q Fault e Closed e Open e Fault X x uj Sg d Na doo dd Bux S 5 45 Mur a jw ra Fs OF4 OF3 OF2 OF1 SDE SD b CAF1 ee SDV a I cy Z o E N amp 5 gt 5 amp gt K The diagram is shown with circuits de energised all devices open connected and charged and relays in normal position Terminals shown in red O must be connected by the customer OF2 OF1 device ON OFF indication contacts OF4 OF3 device ON OFF indication contacts NSX400 630 SDE fault trip indication contact short circuit overload ground fault earth leakage SD trip indication contact CAF2 CAF1 early make contact rotary handle only CAO1 early break contact rotary handle only SDV earth leakage fault trip indication contact add on Vigi module RD red VT violet WH white GY grey YE yellow OR orange BK black BL blue GN green LV434101 04 2012 141 Withdrawable Devices Connection Diagrams Communicating motor mechanism MTc gt ce N 8 TRO
7. 2 Inhibit ground fault protection button with pictogram and yellow confirmation LED 3 Inhibit thermal memory button with pictogram and yellow confirmation LED 2 3 Tripping Test Using the Electrical push to trip Button The electrical push to trip button causes an electronic trip in the circuit breaker This test is used to check the electronic and mechanical circuit breaker controls Carry out the test after preparing the equipment Step Action 1 Switch the circuit breaker to the ON position Tripping the circuit breaker 2 Press the electrical push to trip button 3 The red confirmation LED on the maintenance module lights up and goes off immediately The circuit breaker on test trips e The control mechanism moves to the tripped position v with toggle switch Trip or Tripped rotary handle OFF motor mechanism The green Ready LED on the Micrologic trip unit continues blinking The screen on the Micrologic 5 and 6 stays unchanged Resetting the circuit breaker 4 Reset the control mechanism The circuit breaker is ready 116 LV434101 04 2012 Micrologic Maintenance Interface Inhibit Ground Fault Protection Function Maintenance Level IV The nhibit ground fault protection button temporarily cancels this protection Micrologic 6 and the thermal memory it is then possible to inject the test current on each phase separately and calculate the true time delay tr Ca
8. 00 c cece cette n 115 Maintenance Module Connected to a PC 1 cette eee 118 Maintenance Module Connected to a PC With RSU Software 0 0 0c ee eee 119 Maintenance Module Connected to a PC With LTU Software 0002 ee eee 121 Chapter 5 Operating the Compact NSX 2 00 cece eee eee 125 sch pH E MITTIT 126 Environmental Conditions 00 0 0 m 129 Maintaining the Compact NSX During Operation usasa aaaea eee 131 What to do in the Event of a Trip llis 133 Appendices oe ccc aee dx ra xc RR ocu Y a d LR aa Re ae 137 Appendix A Connection Diagrams eeeeeeeeeee nnn 139 Fixed DEVICES iore RR a a adobe Sea eds CRURA URGE ROI EI WURDE 140 Withdrawable Devices acrem Repub Daten ats REEE A eee 142 Motor MechlianiSmi e tina a ead me pace Pee iode tabla ka 144 SDx Module With Micrologic 2 5 and 6 Trip Unit llli 146 SDTAM Module With Micrologic 2 M and 6 E M Trip Unit llle eese 147 Modbus Modu le ssa rie Aere Pied err IR o eL AS re a RU C ER utem 148 LV434101 04 2012 Safety Information c Important Information NOTICE PLEASE NOTE Read these instructions carefully and look at the equipment to become familiar with the device before trying to install operate or maintain it The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to inf
9. 144 180 225 16 25 32 40 50 63 80 100 125 160 200 250 76 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Magnetic Protection For trip units rated below 200 A the magnetic protection pick up cannot be adjusted and equals the value shown below For all case types Trip unit rating In A 16 25 32 40 50 63 80 100 125 160 Pick up Im A 190 300 400 500 500 500 640 800 1250 1250 The precision range is 20 For trip units rated between 200 A and 250 A the magnetic protection pick up Im is set using a 6 setting dial Turning the magnetic protection adjustment dial 1 modifies the trip curve as shown 2 t 2500 1250 2250 6 4 2000 1500 175 im A 1 2 The table below shows the values of the pick up Im in amperes for magnetic protection values indicated on the dial relative to the position of the Im dial Trip unit rating In A 200 250 Pick up Im A 1000 1250 1200 1500 1400 1750 1600 2000 1800 2250 2000 2500 The precision range is 20 LV434101 04 2012 77 Description of Micrologic Thermal Magnetic and Electronic Trip Units Example of Application Protection of a feed with the following characteristics e Power supplied by a 1 250 kVA transformer 400 V 496 e Protection of a distribution box lo
10. 400s tr 16s tr 11s The precision range is 20 0 92 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Short Time Protection The short time protection pick up Isd is set by a 9 setting dial The setting value is expressed in multiples of Ir Step Action 1 Set the long time protection first the setting pick up is Ir 2 Turn the Isd adjustment dial to the value required The Isd value is adjustable from 1 5 Ir to 10 Ir 3 Isd Isd setting x Ir The precision range is 15 The time delay tr for short time protection cannot be adjusted e Non trip time 20 ms e Maximum breaking time 80 ms Setting the Instantaneous Protection The pick up li for instantaneous protection cannot be adjusted The table below shows the value of the pick up li for instantaneous protection in amperes according to the trip unit rating In Trip unit rating In A 40 100 160 250 400 630 Pick up li A 600 1500 2400 3000 4800 6930 The precision range is 15 The time delay for instantaneous protection cannot be adjusted e Non trip time 0 ms e Maximum breaking time 50 ms Setting the Neutral Protection 4P Only The neutral selection dial gives a choice of three values for the neutral long time and short time protection pick ups The table below shows the values of the pick up for neutral long
11. A 4s 182 A 00s 6004 ilr 0 000 A 0 800xin G6lr 6 xlr Pt off 15 xin sd 0 000 1 Micrologic selection window 2 Accessible function tabs The table below summarizes the functions handled by the RSU software Tab Functions eas Configuring the measurement functions Micrologic E z Setting protection parameters fiBasic prot EB Alarms Configuring 10 user alarms and pre alarms ES Outputs Assignment of the two SDx outputs ERES F jPasswor i Configuring four password levels BSCM module option Counters for OF operations and actions on SD and SDE faults e Alarm threshold associated with OF counters e Communicating motor mechanism motor mechanism counters communicating motor mechanism Configuring the reset function Ee reakerl O Modbus interface option Mod ree ae e Reading Modbus addresses e Configuring communication e Configuring the dataset For more details about the Services Alarms and Outputs tabs see the Micrologic 5 and 6 trip units User manual LV434101 04 2012 119 Micrologic Maintenance Interface Preparing the Equipment Prepare the equipment before carrying out maintenance Step Action Position the maintenance module mechanical cap in the central position Start up the PC Set up the connections between the PC and the maintenance module or connect the Bluetooth connectors Click the maintenance module connec
12. Do not use cleaning products Metallic parts Preferably use a dry cloth If a cleaning product must be used avoid applying and or splashing the product onto non metallic parts 132 LV434101 04 2012 Operating the Compact NSX What to do in the Event of a Trip Identify the Cause of the Trip Local and remote indication provides information on the probable cause of a trip In particular the indications specific to the Micrologic 5 or 6 trip unit provide a high level of certainty about the cause of the fault see Micrologic 5 and 6 trip units User manual There are several types of cause e Faults on the installation e Faults due to a malfunction e Intentional tripping Trip Following a Fault on the Installation The control mechanism is positioned on W Trip or Tripped Information on the display Ir tr Isd tsd li Ig tg YA 2B sic Indication Probable cause TM D Micrologic 2 Micrologic 5 and 6 SD SD SD Tripped manually by Information on the display push to trip test e Manually opening the motor mechanism d D e Disconnecting the circuit breaker SD SDE SD SDE SD SDE SDT e TM D Tripped on electrical fault cause unknown SDT Information on the display e Micrologic 2 Tripped by long time protection e Micrologic 5 and 6 Tripped by long time protection SD SDE SD SDE e TM D Tripped on electrical fault cause unknown Information on the d
13. LV434101 04 2012 Micrologic Maintenance Interface Maintenance Module Connected to a PC With LTU Software At a Glance Description The LTU Local Test Utility software is a Micrologic utility designed to help the operator Test the protection time delays Simulate alarms Save test results Print test reports Display trip curves Display current values Test the non trip time check discrimination Test the ZSI function Trip simulations are used to check the protection time delay values see LTU Online Help Two types of test are offered e Under the Automatic TEST tab the LTU software automatically performs trip tests in sequence The test result is immediately shown as a value and by a bar which is e Green trip time within tolerance Passed e Red trip time outside tolerance Failed e Under the Manual TEST tab The LTU software prompts the user to choose values for the intensity and duration of the fault current This test can be used to check the pick ups and non trip times on the trip unit Description of the LTU screen under the Identification tab i Micrologic LTU C MicrologicWtility TU_A Wata PRO 74533742 Report Itur Eile Remote Functions Setup Live update Help Trip unit on test Distibutiorl Micrologic 5 2E 4P 40 A EC P N Lv428106 Customer identification ry Testing company Schneider Electric Address 123 Schneider Avenue aN Date 11 07 07 Phone 00123456789 2
14. NSX Malfunction Micrologic 5 and 6 Fault Screens The table below shows the checks and or repairs that have to be carried out according to the Micrologic 5 and 6 fault screens for more details see the Micrologic 5 and 6 trip units User manual Indication Probable cause Checks or repairs TriP screen then StoP Ir tr isd tsd li xin N YA 2B Nc Serious fault on the Micrologic trip unit the trip unit can no longer provide protection Change the trip unit urgently The circuit breaker cannot be reset Ir tr lsd tsd li xIn N va ZB SC has not been reset on the SDx module Err screen Fault on the Micrologic trip unit Change the trip unit on the next maintenance visit Co The trip unit can still provide protection OUT screen Acknowledgment of a latching alarm Check the cause of the alarm and use the OK button to carry out the reset 136 LV434101 04 2012 Appendices LV434101 04 2012 137 138 LV434101 04 2012 Connection Diagrams A Aim This chapter reproduces the connection diagrams from part D of the Compact NSX catalog What Is in This Chapter This chapter contains the following topics Topic Page Fixed Devices 140 Withdrawable Devices 142 Motor Mechanism 144 SDx Module With Micrologic 2 5 and 6 Trip Unit 146 SDTAM Module With Micrologic 2 M and 6 E M Trip Unit 147 Modbus Module 148 LV4341
15. Production Assystem France Publication Schneider Electric Printed 04 2012
16. TM250D 1250 5 2250 250A 40 C 175 2000 g 1500 Im A i Fm No Parameter Description Type TM D TM G MA 0 In Trip unit setting range minimum setting maximum o H BH setting trip unit rating In 1 Ir Thermal protection pick up E m 2 tr Thermal protection time delay Oo oOo 3 Im Magnetic protection pick up x o 4 tm Magnetic protection time delay o mj o E Adjustable O Non adjustable X Adjustable or non adjustable according to the trip unit rating Not present Upgradability of Thermal Magnetic Trip Units Onsite swapping of trip units is simple and reliable e No connections to make No special tools e g calibrated torque wrench Compatibility of trip units ensured by mechanical cap Torque limited screw ensures proper mounting see drawing below The design of the trip units limits the risk of incorrect tightening or oversights The simplicity of the swapping process means it is easy to make the necessary adjustments as operation and maintenance processes evolve NOTE When the trip unit has been mounted by this means the trip unit can still be removed the screw head is accessible NOTE On the Compact NSX with R HB1 and HB2 breaking performances the trip units are not upgradable 74 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Sealing the Protection The transparent cover on thermal
17. a time constant In the event of an overload the trip units with a thermal memory memorize the build up temperature caused by the current Memorizing the build up temperature leads to a reduction in the trip time All Micrologic trip units incorporate a thermal memory as standard e For Micrologic 2 trip units the time constant is 15 min e For Micrologic 5 and 6 trip units the time constant is 20 min 88 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Motor Trip Units The figure and table below define the protection functions for Micrologic type M trip units 0 S 2 A Ped Micrologic 6 3 E M py pe 3 sie l Mo licA800A 4 e dm 6 E 5 7 a l l l l 1 No Parameter Description Micrologic type M 1 3 2 6E 0 In Trip unit setting range minimum setting maximum setting trip 1 Im o unit rating In 1 Ir Long time protection pick up L 2 Class Long time protection trip class 3 Isd Short time protection pick up S m a 4 tsd Short time protection time delay oO oOo Hn 5 li Instantaneous protection pick up i o o 6 Ig Ground fault protection pick up G H 7 tg Ground fault protection time delay El lunbal Phase unbalance protection pick up oO m tunbal Phase unbalance protection time delay B B Adjustable O Non adjustable
18. cannot be adjusted 20 ms e Non trip time 20 ms e Maximum breaking time 80 ms Setting the Instantaneous Protection The pick up li for instantaneous protection cannot be adjusted The table below shows the value of the pick up li for instantaneous protection in amperes according to the trip unit rating In Trip unit rating In A 100 160 240 400 Pick up li A 1500 1600 2800 4800 The precision range is 15 The time delay for instantaneous protection cannot be adjusted e Norn trip time 10 ms e Maximum breaking time 50 ms Setting the Neutral Protection 4P Only The neutral selection dial gives a choice of three values for the neutral long time and short time protection pick ups The table below shows the values of the pick up for neutral long time protection in multiples of Ir and neutral short time protection in multiples of Isd according to the dial position Dial Dial position Long time setting value Short time setting value 4P 3D 0 0 e 4P 3D N 2 Ir 2 Isd 2 nic in 4P 4D Ir Isd The time delay for the neutral long time and short time protections is the same as that for the phases LV434101 04 2012 109 Description of Micrologic Thermal Magnetic and Electronic Trip Units 110 LV434101 04 2012 Maintenance Interface for Micrologic Trip Units Aim This chapter describes the maintenance interface associated with Micrologi
19. contactor e Direct on line starting e Motor power 110 kW i e In 196 A e Type 2 coordination Installation diagram 1250 kVA 400 V 4 Cv now 1 Compact NSX250 Calculations performed on the installation in accordance with the regulations can be used to determine the characteristics of the appropriate Compact NSX to install calculations performed using the Ecodial software Circuit breaker selection Installation Chosen Compact NSX Comments In 196A Compact NSX 250 MA 220 Determination of case size Isc 28 5 kA F Icu performance can be read from rating plate Ikmin 14 8 kA Trip unit protection settings Installation Chosen trip unit Comments Ikmin 14 8 kA Im 2 860 A The Isd protection setting is compatible with Transient current 14 e Transient startup currents In i e 2 800 A e Short circuit protection 82 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Vigi Earth Leakage Protection Module At a Glance The Vigi earth leakage protection module is designed to provide protection against very low value ground fault currents In the event of a fault this earth leakage protection module causes the circuit breaker to trip very rapidly by acting directly on the circuit breaker mechanism Earth leakage protection by the Vigi module is provided e Forthe Compact NSX 100 to 250 series by adding a Vigi MH module hig
20. handle clockwise from the O OFF position to the position ON 26 LV434101 04 2012 Description of the Compact NSX Circuit Breaker How to Lock Your Circuit Breaker With Direct Rotary Handle Locking the Direct Rotary Handle Locking with up to 3 padlocks not supplied with shackle diameter 5 to 8 mm Padlocking is an option e As standard only in the O OFF position diagram 1 e After modification of the rotary handle during installation in both the ON diagram 2 and O OFF positions Locking with a Profalux or Ronis Key Optional It is possible to use one of the above locks in the OFF position or in the O OFF and ON positions diagram 3 depending on the bolt chosen The lock can be added on site Keylocking can be used at the same time as padlocking NOTE The circuit breaker s protection function is not inhibited by locking the rotary handle in the ON position In the event of a fault it trips without affecting its performance When unlocked the toggle switch moves to the Trip position To return the circuit breaker to service follow the resetting instructions see Resetting After a Trip page 25 LV434101 04 2012 27 Description of the Compact NSX Circuit Breaker Door Locking MCC Function Further options are offered with the direct rotary handle in the MCC function Door locking The direct rotary handle locks the door in the closed position when the circuit bre
21. in Electrical Distribution 20 2000 ae Protection Against Ground Faults Protection for Motor Feeders TM D TM G Thermal Magnetic and MA Magnetic Trip Units lille Characteristics of Thermal Magnetic Trip Units illie TM D Thermal Magnetic Trip Unit TM G Thermal Magnetic Trip Unit MA Magnetic Trip Unit Vigi Earth Leakage Protection Module 10 11 12 14 16 18 19 20 21 22 23 24 25 26 27 30 31 33 34 36 39 40 41 42 44 47 48 50 52 55 57 58 59 60 63 64 65 66 67 69 70 73 74 76 79 81 83 LV434101 04 2012 3 3 Micrologic Electronic Trip Units llsleeeeee RII 86 Characteristics of Micrologic Electronic Trip Units llle 87 Micrologic 2 Electronic Trip Unit lssseleeeeeee RII 92 Micrologic 5 and 6 Electronic Trip Units llle 95 Micrologic 1 3 M Electronic Trip Unit lssleeee RII 100 Micrologic 2 M Electronic Trip Unit 0 2 0 0 eee tees 102 Micrologic 6 E M Electronic Trip Unit llle IIR 105 Micrologic 2 G Electronic Trip Unit 0 2 eee 106 Micrologic 2 AB Electronic Trip Unit lille 108 Chapter 4 Maintenance Interface for Micrologic Trip Units 111 Functions of the Micrologic Maintenance Interface 000 cece eee 112 Pocket Battery Module 0 600 ee I I n 113 Standalone Maintenance Module
22. magnetic trip units can be sealed to prevent modification of the protection settings LV434101 04 2012 75 Description of Micrologic Thermal Magnetic and Electronic Trip Units TM D Thermal Magnetic Trip Unit At a Glance Description The TM D thermal magnetic trip unit is designed to protect conductors in commercial and industrial electrical distribution This trip unit exists in two versions 3P 3D and 4P 3D The adjustment dials are on the front of the trip unit 175 250A i mg EIN R dn 2000 1750 1500 NE 1 Setting range for the TM D thermal magnetic trip unit 2 Adjustment dial for the thermal protection pick up Ir 3 Adjustment dial for the magnetic protection pick up Im for TM D 200 250 only m f 225 200 Ir A 3 Im A Seiting the Thermal Protection The thermal protection pick up Ir is set by a 4 setting dial Turning the thermal protection adjustment dial 1 modifies the trip curve as shown 2 t abu 250 175 225 200 NM EEE 5 I 1 2 The table below shows the values of the pick up Ir in amperes for thermal protection values indicated on the dial with respect to every trip unit rating relative to the position of the dial Ir Trip unit rating In A 16 25 32 40 50 63 80 100 125 160 200 250 Pick up Ir A 11 18 22 28 35 44 56 70 88 112 140 175 13 20 26 32 40 50 64 80 100 128 160 200 14 23 29 36 45 57 72 90 113
23. make contact rotary handle only CAO1 early break contact rotary handle only SDV earth leakage fault trip indication contact add on Vigi module LV434101 04 2012 143 Connection Diagrams Motor Mechanism The diagram is shown with circuits de energised all devices open connected and charged and relays in normal position After tripping initiated by the Push to trip button or by the undervoltage MN release or the shunt MX release device reset can be automatic remote or manual Following tripping due to an electrical fault with an SDE contact reset must be carried out manually Symbols Q circuit breaker A4 opening order A2 closing order B4 A1 motor mechanism power supply L1 manual position manu B2 SDE interlocking mandatory for correct operation BPO opening pushbutton BPF SDE closing pushbutton fault trip indication contact short circuit overload ground fault earth leakage DB114667 eps DB114666 eps DB114668 eps E EN BPO BPF aM EU ee heer E EN BPO BPF A2 C AA c 144 LV434101 04 2012 Connection Diagrams NSX cord DB114669 eps 220 240 V Hem Schematic representation of the communicating motor mechanism MT q ae RSU screen for the comm
24. module Operation of the MX or MN voltage releases Operation of the push to trip button Connecting Disconnecting the circuit breaker Manually opening the motor mechanism SDE Electrical fault indication This contact indicates that the circuit breaker has tripped on an electrical fault due to Long time protection Short time protection e Ground fault protection e An earth leakage fault detected by the Vigi module SDV Earth leakage fault indication tripped by Vigi This contact indicates that the circuit breaker has tripped due to an earth leakage fault detected by the Vigi module LV434101 04 2012 47 Mechanical and Electrical Auxiliaries SDx Module Micrologic 2 5 and 6 At a Glance Compact NSX circuit breakers equipped with Micrologic 2 5 and 6 trip units can take the optional SDx module The SDx module receives data from the trip unit via a fiber optic link and makes available e For Micrologic 2 trip units a solid state output non configurable for remote feedback from a thermal trip alarm e For Micrologic 5 and 6 two solid state outputs configurable for remote feedback from alarms Description Installation and Connection 1 SDxmodule with output terminal block 2 Rating plate 3 Slot A Compact NSX 100 250 B Compact NSX 400 630 4 A Micrologic 2 wiring dia
25. open the transparent cover and e Press the locking unlocking microswitch e Or actuate one of the adjustment dials To lock the protection parameter settings press the unlocking microswitch again The protection parameter settings also lock automatically 5 minutes after the Micrologic keypad was last pressed 96 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Mode Definition Mode Selection Screensaver The information that can be accessed on the Micrologic display unit is split between different modes The modes that can be accessed depend on e Whether the protection parameter settings are locked e The Micrologic version 3P or 4P A mode is defined by a combination of 5 pictograms The tables below show the possible modes Pictograms Mode accessible with padlock locked DUE e Reading instantaneous measurements e Reading and resetting kilowatt hour meters uv Reading and resetting peak demand Max Reset Ok o0 a Reading the protection parameters wv 2 Reading the neutral declaration 3P Micrologic trip unit Pictograms Mode accessible with padlock unlocked Hg v E e Reading instantaneous measurements e Reading and resetting kilowatt hour meters vo E Reading and resetting peak demand Max Reset Ok Ord Setting the protection parameters c P Setting the neutral declaration 3P Micrologic trip unit A mode is selected by succes
26. setting screen 2 Set tr to the value required 0 5 s 2 s 4 s 8 s 16 s using the keypad 3 Confirm the setting by pressing the OK button twice Setting the Short Time Protection The short time protection pick up Isd is set using the 9 setting preset dial and the keypad e The preset dial allows the pick up to be preset to a value Isd displayed in multiples of Ir on the dial e The pick up Isd is fine tuned via the keypad Step Action 1 Turn the Isd adjustment dial higher than the value required range 1 5 Ir 10 Ir in steps of Ir 2 Access the Isd screen in setting mode padlock open 3 Set Isd to the exact value required in steps of 0 5 Ir up to 1 5 Ir using the keypad 4 Confirm the setting by pressing the OK button twice The time delay tsd is set directly via the keypad The same setting is also used for selecting option I4 ON Step Action 1 Switch to setting mode padlock open and access the tsd setting screen 2 Set tsd to the desired value 0 0 s 0 1 s 0 2 s 0 3 s 0 4 s with or without I t ON using the keypad 3 Confirm the setting by pressing the OK button twice Setting the Instantaneous Protection The instantaneous protection pick up li is set directly via the keypad Step Action 1 Switch to setting mode padlock open and access the li setting screen 2 Set li to the value required range 0 5 12 In in steps of 0 5 In using the k
27. the relevant instructions must be followed Failure to use Schneider Electric software or approved software with our hardware products may result in injury harm or improper operating results Failure to observe this information can result in injury or equipment damage 2012 Schneider Electric All rights reserved LV434101 04 2012 Table of Contents Chapter 1 1 1 1 2 1 3 1 4 Chapter 2 Chapter 3 3 1 3 2 Safety Information 2 s 2 n Ro Rr REESE ES About the Book Description of the Compact NSX Circuit Breaker Quick Overview of Your Circuit Breaker 2l ee The Main Compact NSX Circuit Breaker Functions 000 c ee eee eee eens Identification of Compact NSX Circuit Breakers 0 00000 eee ee Operating the Switchgear When Energized 0 000 e cece ees De Energizing the Switchgear Your Manually Operated Circuit Breaker With Toggle Switch 00 000 Where to Find the Controls and Information on Your Circuit Breaker How to Open Close and Reset Your Circuit Breaker 2 00000 e eee eee eee How to Test Your Circuit Breaker How to Lock Your Circuit Breaker Your Circuit Breaker With Rotary Handle 00 00 cece cette ee Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker How to Open Close and Reset Your Circuit Breaker
28. the test port on the trip unit ocinowv a2 Preparing the Equipment Prepare the equipment before carrying out maintenance Step Action 1 Position the maintenance module sliding mechanical cap in the central position 2 Connect the 24 V DC power cord the green ON LED lights up 3 Click the maintenance module connector into the test port on the Micrologic trip unit LV434101 04 2012 115 Micrologic Maintenance Interface Inspection and Checking Check and inspect the trip unit after preparing the equipment Step Action Inspection 1 Check that the green Ready LED on the Micrologic trip unit is blinking This means that all the Micrologic trip unit functions are in a satisfactory operational state internal self test Checking the setting values on the display unit for Micrologic 5 and 6 2 Use the navigation buttons to display the Reading protection parameters mode see Micrologic 5 and 6 trip units User manual 3 Scroll down and check the values of the different settings Micrologic 5 trip unit Ir A IN A if present long time tr s Isd A IN A if present short time tsd ms with without It li A The settings can be modified The Three Test Functions Tests are carried out with the aid of the three test buttons The associated LEDs provide confirmation ie aL 1 Electrical push to trip test button with pictogram and red confirmation LED
29. time protection in multiples of Ir and neutral short time protection in multiples of Isd according to the dial position Dial Dial position Long time setting value Short time setting value 4P 3D 0 0 amp 4P 3D N 2 Ir 2 Isd 2 re ne 4P 4D Ir Isd The time delay for the neutral long time and short time protections is the same as that for the phases LV434101 04 2012 93 Description of Micrologic Thermal Magnetic and Electronic Trip Units Example of Setting the Long Time Protection Setting the long time protection pick up Ir to 63 A on a Micrologic 2 2 rated In 100 A see diagram below Step Action 1 lo is positioned on 100 A and Ir on 1 x lo factory setting lo is set to 63 A Adjustment not needed Ir fine tuning stays at setting 1 2 3 4 Ir is set to 63 A x 1 A precise coordination calculation indicates that the desirable value is Ir 60 A Step Action 1 lo is positioned at 100 A and Ir at 1 x lo 2 lo is set to 63 A 3 Setting calculation 60 A 0 95 x 63 A Fine tune Ir on setting 0 95 4 Ir is set to 63 A x 0 95 59 9 A The actions in steps 2 and 3 on the adjustment dials modify the trip curves as shown 4 lo Ir lo Ir ss Fp 94 96 5 SP TO 94 3 96 50 97 50 80 93 9 97 459 4 JM os 459 0 92 98 40 100 9 1 40 100 9 K xll
30. units User manual 14 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Remote Electrical Stop Command The remote electrical stop command can be given by electrical control auxiliaries regardless of the control type in use To obtain a remote electrical stop command use e an MX shunt release or e an MN undervoltage release or e an MN undervoltage release with time delay unit the time delay unit overcomes the problem of micro cuts For more details on the electrical control auxiliaries see Control Auxiliaries page 58 NOTE It is advisable to test operation of the remote electrical stop commands at regular intervals every 6 months LV434101 04 2012 15 Description of the Compact NSX Circuit Breaker De Energizing the Switchgear Isolation Capacity of Compact NSX Circuit Breakers Compact NSX circuit breakers offer positive contact indication and are suitable for isolation in accordance with standards IEC 60947 1 and 2 the O OFF position of the actuator is sufficient to isolate the circuit breaker concerned Circuit breakers capable of isolation are indicated by the following marking on the rating plate RS To confirm this suitability standards IEC 60947 1 and 2 require particularly stringent shock withstand tests Compact NSX circuit breakers can be locked in the O OFF position this enables work to be carried out with the power off in accordance with installation
31. 0 and 30 concern applications in which motor starting conditions are difficult Additional Protection Depending on the application and the operating constraints additional protection may be required concerning Phase unbalance or phase loss Locked rotor Undercurrent Long starts LV434101 04 2012 71 Description of Micrologic Thermal Magnetic and Electronic Trip Units Compact NSX Motor Circuit Breakers Compact NSX motor circuit breakers incorporate MA thermal magnetic trip units and Micrologic type M electronic trip units Protection functions by trip unit type Trip unit type Protection MA Micrologic 1 3 Micrologic 2 M Micrologic 6 E M M Overloads Short circuits a a a a Insulation faults ground fault L protection Phase unbalance or phase loss a Locked rotor Undercurrent m Long starts E The protection against insulation faults in the Micrologic 6 E M trip unit is the ground fault protection type Type 1 and 2 coordination tests have been carried out with motor feeder components in respect of all Compact NSX motor circuit breakers Trip classes by trip unit type Trip unit type Class MA Micrologic 1 3 M Micrologic 2M Micrologic 6 E M 5 gt E a 10 i m a L 20 30 i Trip Unit Long Time Protection The pick up setting Ir for trip unit long time protect
32. 01 04 2012 129 Operating the Compact NSX Electromagnetic Disturbances Compact NSX circuit breakers are designed to be immune to electromagnetic disturbance They comply with the requirements of the electromagnetic compatibility EMC standard Standard Title IEC 60947 2 annexes F and J Overcurrent protection tests IEC 60947 2 annexes B and J Specific tests for earth leakage protection Compliance with EMC standards is validated by tests for immunity to e Overvoltages produced by the operation of electromagnetic switchgear e Overvoltages produced by atmospheric disturbance passing through the electrical network for example lightning e The use of apparatus emitting radio waves radio transmitters walkie talkies radar etc e Electrostatic discharges produced by the operators themselves Conformity with EMC standards as described above ensures e The Compact NSX circuit breaker will operate correctly in a disturbed environment e without nuisance tripping e in accordance with the trip time e There will be no disturbance to any type of industrial or commercial environment Altitude Compact NSX circuit breakers are designed to operate within specification at altitudes of up to 2 000 m Above 2 000 m modifying the characteristics of the surrounding air dielectric strength cooling capacity causes derating as follows Altitude m 2 000 3 000 4 000 5 000 Maximum
33. 01 04 2012 139 Connection Diagrams Fixed Devices DB115707 eps 3P or 4P NSX cord N L1 L2 L3 V E mai i o u o i E x p ICI looo OS Ga Upstream CB QVO uggz E00 pe e N NNN WN t D c xoc E i Es EN 81 dor BPO BPF EN MEME p a ow 84 s a 3 mx O O Ni ON Motor mechanism MT NSX cord 220 240 V Communicating motor mechanism MTc AIE Communication MN undervoltage release H WH L BL data or BK RD 24 V DC power supply MX sh titreleaso AIE ZSI Zone Selective Interlocking Z1 ZSI OUT SOURCE Motor mechanism MT 2 23 7 oben A4 opening order Z4 ZSI IN ST short time A2 closing order Z5 ZSI IN GF ground fault B4 A1 power supply to motor mechanism Note Z3 Z4 Z5 for NSX400 630 only L1 manual position manu AIE ENCT external neutral current transformer B2 SDE interlocking mandatory for correct operation shielded cable with 1 twisted pair T1 T2 shielding earthed at one end only CT end BPO opening pushbutton Connection L 30 cm max BPF closing pushbutton maximum length of 10 metres cable size 0 4 to 1 5 mm Communicating motor mechanism MTc
34. 3 Contact name Mr Dupont Job Contrat N N AbC1234 Breaker name plate data terea Manufacturer Schneider Electri v Family Compact X plane as Serial number 0587654321 ABC Breaker type NS SEE a gt x Schneider mae Hue Electric is Identification m Manual TEST ie Automatic TEST ae Alarms Simulation F Miscellaneous Customer Company One Address 45 Avenue A5 Phone 00138957547 Contact name Mr Durand Equipment Lighting Trip unit data Family Microloaic Type 52E 4P 40A IEC Tip unit ready for Breaker frame N53c 100 S E Raro semmnte rere 3 Ir tr Isd tsd li IN ia 324 16 s 192 4 O 0s 6004 In 40 4 O 800sIn GRBlr E xlr Ft off 15 n lsd 240 A 1 Accessible test tabs 2 Installation customer and product identification tab 3 Setting values area for Micrologic being tested The table below summarizes the test functions accessible on the PC Tab Functions Identification Identification of the installation and the circuit breaker trip unit Manual TEST Manual setting of fault current values Automatic TEST Automatic setting of fault current values Alarm simulation Alarm simulation for system testing Miscellaneous push to trip button ZSI test LV434101 04 2012 121 Micrologic Maintenance Interface Preparing the Equipment Prepare the equipment before carrying out maintenance Step Action Positio
35. 4 V DC 20 10 19 2 26 4 V DC Consumption Typical 20 mA 24 V DC at 20 C e Maximum 30 mA 19 2 V DC at 60 C Isolated NSX cord Connection The isolated NSX cord connects e Directly to the Modbus communication interface module e Or via the front display module FDM121 see the Micrologic 5 and 6 trip units User manual The figure below illustrates the connections from the isolated NSX cord to the Modbus communication interface module Modbus Modbus communication interface module ULP cord Electronic module with female RJ45 connector 1 3 m cord Compact NSX internal connector arhond LV434101 04 2012 57 Mechanical and Electrical Auxiliaries Control Auxiliaries Control and Indication Contacts Installed Outside the Case Control and indication contacts installed outside the case are contacts for specific applications see Compact NSX Catalog CAM contacts Early operation contacts These contacts are installed in the rotary handle e Early make contacts CAF1 CAF2 are actuated before the poles close when a circuit breaker manual command is given e The early break changeover contact CAO1 is actuated before the poles open when a circuit breaker manual command is given Connected CE Disconnected CD carriage switches These changeover contacts are installed on the chassis They indicate the position of the circuit breaker in the chassis 1 Co
36. 50 kVA transformer 400 V 496 e Protection of a motor application defined by e 2 component motor feeder circuit breaker contactor e Direct on line starting e Motor power 110 kW i e In 196 A e Type 2 coordination e The application constraints dictate a slow startup Installation diagram 1250 kVA 400 V 4 Coe 110 kw LW Compact NSX250 i Micrologic 2 2 M Calculations performed on the installation in accordance with the regulations have determined the characteristics of the appropriate Compact NSX to install calculations performed using the Ecodial software Installation diagram Installation Chosen Compact NSX Comments In 196 A Compact NSX 250 Micrologic 2 2 M 220 Motor circuit breaker case size Isc 28 5 kA F Icu performance can be read from rating plate Ikmin 14 8 kA Trip unit protection settings Installation Trip unit setting Comments In 196A Micrologic 2 2 M 220 set to 200A Micrologic trip unit setting Slow starting Set in class 20 Long time protection trip class Ikmin 14 8 kA Transient 14 In Isd In gt 12 or Isd gt 2 400 A Isd protection setting compatible with e Transient startup currents e Short circuit protection 104 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 6 E M Electronic Trip Unit At a Glance Descript
37. B 3C amp 8 No Description 1 5 mode definition pictograms Up arrow pointing to protection parameter currently being set List of protection parameters according to the Micrologic trip unit type e Micrologic 5 Ir tr Isd tsd li xin ee B e Micrologic 6 Ir tr isd tsd li xIn lg tg o 1 e Micrologic 6 E M Ir Cl amp amp isd lunbal tunbal lam tjam lg tg pe u eee 4 Value of the measured quantity 5 Unit of the measured quantity 6 Navigation arrows 7 Down arrow s pointing to the selected phase s neutral or the ground 8 Phases 1 A 2 B 3 C neutral N and ground Keypad The 5 button keypad is used for navigation Key Description Mode Selecting the mode c Scrolling navigation D vy Jj Navigation back measurement or setting the protection parameters Navigation forward measurement or setting the protection parameters c Confirmation Locking Unlocking the Protection Parameter Settings The protection parameter settings are locked when the transparent cover is closed and sealed to prevent access to the adjustment dials and the locking unlocking microswitch A pictogram on the display unit indicates whether the protection parameter settings are locked e Padlock locked The protection parameter settings are locked e Padlock unlocked The protection parameter settings are unlocked To unlock the protection parameter settings you need to
38. Downstream of the low voltage distribution Ig Lowest possible recommended values for lg LV434101 04 2012 69 Description of Micrologic Thermal Magnetic and Electronic Trip Units Protection for Motor Feeders Structure of a Motor Feeder Direct on line starting is the most widely used type of motor feeder The direct on line starting motor feeder can comprise up to four different items of switchgear providing one or more functions It must also incorporate the specific characteristics of the application Switchgear for short circuit protection Control gear Switchgear for overload protection Switchgear for ground fault protection Characteristic t f I of an asynchronous D O L starting motor Starting phase Current peak on activation NOOR ON Characteristics Defined by Standard IEC 60947 4 1 A motor feeder must satisfy the general rules of standard IEC 60947 4 1 in particular the rules concerning the protection of contactors and motor feeders In the matter of protection this standard defines e Coordination of motor feeder protections e Thermal relay trip classes e Insulation coordination Coordination According to Standard IEC 60947 4 1 Two types of coordination are allowed type 1 coordination or type 2 coordination e In type 1 coordination deterioration of the contactor and relay is accepted under the 2 following conditions e The contactor or starter does not rep
39. F Circuit breaker open or e wW Trip or Tripped Circuit breaker tripped tripped This position is obtained by the protection trip unit or trip auxiliaries This position is obtained in auto or as well as by the push to trip button and the maintenance interface manu mode Circuit breakers equipped with a Micrologic trip unit offer very precise indications on the state of the circuit breaker or the installation gt 90 gt 105 g r isd tsd li xin E Co src Ir t 6 8 c N WA 2B 31C O CO These easily accessible indications are useful for the management and maintenance of the installation 1 The Ready LED green blinks slowly when the electronic trip unit is ready to provide protection 2 The overload pre alarm LED orange shows a steady light when the load exceeds 90 of the Ir setting 3 The overload alarm LED red shows a steady light when the load exceeds 105 of the Ir setting The pre alarm or alarm indication makes it possible to avoid a fault situation Should this happen it is advisable to carry out load shedding in order to avoid tripping due to circuit breaker overload Information is available remotely e Via indication contacts e By using a communication bus These indication auxiliaries can be installed on site For more details on the remote indication and communication options see Summary Tables of Auxiliaries page 60 and refer to the Micrologic 5 and 6 trip
40. F position to the ON position the circuit breaker is closed Step Action Handle position 1 Isolate the feed see Maintenance and Servicing Work on the Installation Trip page 16 before inspecting the downstream electrical equipment Look for the cause of the fault Trip Inspect and if necessary repair the downstream equipment Trip Inspect the equipment retightening of connections etc in the event of a short Trip circuit trip 5 Reset the circuit breaker by turning the rotary handle anticlockwise from the Trip O OFF position to the O OFF position the circuit breaker is open 6 Close the circuit breaker again by turning the rotary handle clockwise from the ON Circuit breaker trip Resetting the circuit breaker Reclosing the circuit breaker LV434101 04 2012 25 Description of the Compact NSX Circuit Breaker How to Test Your Circuit Breaker With Direct Rotary Handle Press the push to trip Button The push to trip button checks whether the trip mechanism is working correctly ON the circuit breaker is closed Step Action Handle position 1 Close your circuit breaker ON 2 Press the push to trip button the circuit breaker trips and the handle Trip moves to the Trip position 3 Turn the rotary handle anticlockwise from the Trip position to the O O OFF OFF Reset position the circuit breaker is open and reset 4 Turn the rotary
41. IE Communication H WH L BL data BK RD 24 V DC power supply ZSI Zone Selective Interlocking Z1 ZSI OUT SOURCE Z2 ZSI OUT Z3 ZSI IN SOURCE Z4 ZSI IN ST short time Z5 ZSI IN GF ground fault Note Z3 Z4 Z5 for NSX400 630 only ENCT external neutral current transformer shielded cable with 1 twisted pair T1 T2 shielding earthed at one end only CT end Connection L 30 cm max maximum length of 10 metres cable size 0 4 to 1 5 mm recommended cable Belden 8441 or equivalent ENVT external neutral voltage tap for connection to the neutral via a 3P circuit breaker AIE AIE E RD red VT violet WH white GY grey YE yellow OR orange BK black BL blue GN green Terminals shown in red O O must be connected by the customer MN undervoltage release or MX shunt release Motor mechanism MT A4 opening order A2 closing order B4 A1 motor mechanism power supply L1 manual position manu B2 SDE interlocking mandatory for automatic or remote recharging BPO opening pushbutton BPF closing pushbutton Communicating motor mechanism MTc B4 A1 motor mechanism power supply BSCM breaker status and control module OF2 OF1 device ON OFF indication contacts OF4 OF3 device ON OFF indication contacts NSX400 630 SDE fault trip indication contact short circuit overload ground fault earth leakage SD trip indication contact CAF2 CAF1 early
42. Low voltage electrical distribution Compact NSX 100 630 A Circuit breakers and switch disconnectors User manual 04 2012 Schneider The information provided in this documentation contains general descriptions and or technical character istics of the performance of the products contained herein This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications It is the duty of any such user or integrator to perform the appropriate and complete risk analysis evaluation and testing of the products with respect to the relevant specific application or use thereof Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information that is contained herein If you have any suggestions for improvements or amendments or have found errors in this publication please notify us No part of this document may be reproduced in any form or by any means electronic or mechanical including photocopying without express written permission of Schneider Electric All pertinent state regional and local safety regulations must be observed when installing and using this product For reasons of safety and to help ensure compliance with documented system data only the manufacturer should perform repairs to components When devices are used for applications with technical safety requirements
43. Manual reset by operating the handle The circuit breaker opens in the O OFF position e The contact position indicator stays on O OFF e The charge indicator changes to charged LV434101 04 2012 37 Description of the Compact NSX Circuit Breaker Resetting After a Fault Trip Resetting after a fault trip can only be done locally When operating in automatic mode return to manual operation to reset the circuit breaker discharged O OFF Step Action Manual operation 2 Reset the stored energy control by operating the handle 8 times B The charge indicator changes to charged and the internal mechanism goes from the Tripped position to the O OFF position Lock the circuit breaker and look for the cause of the fault Step Action Automatic operation 1 Move the operating mode selector to manu 2 Reset the stored energy control by operating the handle 8 times B The charge indicator changes to charged and the internal mechanism goes from the Tripped position to the O OFF position Lock the circuit breaker and look for the cause of the fault 3 Move the position selector back to automatic Auto The fact that a protection has tripped does not remedy the cause of the fault on the downstream electrical equipment CAUTION RISK OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting
44. NOTE The switchboard must be powered down before carrying out any checks and tests The table below indicates the checks and inspections to be performed according to the event A B C D E F Prior to startup m L L L Periodically during operation see Regular Preventive Maintenance a E E page 131 After carrying out work on the switchboard E m m a E Periodically during lengthy downtime a a Oo Following lengthy downtime E L L a Following lengthy downtime and modification to the switchboard E a a Insulation and dielectric strength tests Inspection of the switchboard Compliance with the diagram Inspection of mechanical equipment Mechanical operation mm oou Check of electronic trip units and Vigi modules A Insulation and Dielectric Strength Tests Insulation and dielectric strength tests are carried out before the switchboard is delivered These tests are subject to the currently applicable standards A CAUTION RISK OF EQUIPMENT DAMAGE Failure to follow these instructions can result in injury or equipment damage Only a trained specialist is authorized to carry out insulation and dielectric strength tests Dielectric strength tests impose great stress on the equipment and may even destroy it if they are not rigorously performed and in particular e The value used for the test voltage reduces according to the number of consecutive tests on the same
45. Not present Motor Trip Unit Additional Protection Micrologic type M trip units in particular Micrologic 6 E M also incorporate additional protection for the motor application For more details see the Micrologic 5 and 6 trip units User manual LV434101 04 2012 89 Description of Micrologic Thermal Magnetic and Electronic Trip Units Indication LEDs Test Port Indication LEDs on the front of the trip unit indicate its operational state The number of LEDs and their meaning depend on the type of Micrologic trip unit Type of Micrologic trip unit Description Distribution e Ready LED green Blinks slowly when the electronic trip unit is ready to provide protection rU S e Overload pre alarm LED orange Shows a steady light when the load S Og C wO exceeds 90 of the Ir setting x lt e Overload alarm LED red Shows a steady light when the load exceeds 105 of the Ir setting Motor e Ready LED green Blinks slowly when the electronic trip unit is ready to provide protection gt 230A E gt 95 Overload temperature alarm LED red Shows a steady light when the motor 8 Q S TO thermal image exceeds 95 of the Ir setting a lt The Micrologic 1 3 M trip unit which provides short time protection only displays the Ready LED green NOTE The reliability of information provided by the indication LEDs is guaranteed for circuit breaker load currents e Above 15 A on a Micrologic
46. Saline environment The circuit breaker is installed in an environment free of salt mist Dust The dust level is low the circuit breaker is protected within a switchboard fitted with filters or IP54 ventilated Vibration Continuous vibration is 0 2 g The maintenance programs described below apply to these environmental and operating conditions Outside these limits circuit breakers are subject to accelerated aging which can quickly lead to malfunctions Regular Preventive Maintenance Maintenance servicing and inspection recommendations for each product are made by the technical departments concerned These operations are intended to maintain the equipment or subassemblies in a satisfactory operational state for their useful service life There are three recommended maintenance levels The table below indicates maintenance operations and their intervals according to the level Level Maintenance interval Maintenance operations Level II 1 year Visual inspection and functional testing replacement of faulty accessories Level Ill 2 years As for level Il plus servicing operation and subassembly tests Level IV 5 years As for level III plus diagnostics and repairs by Schneider Electric Services The intervals stated are for normal environmental and operating conditions Provided all the environmental conditions are more favorable maintenance intervals can be longer for example Level Ill ma
47. Set tg to the desired value 0 0 s 0 1 s 0 2 s 0 3 s 0 4 s with or without I t ON using the keypad 3 Confirm the setting by pressing the OK button twice Neutral protection for a 4P circuit breaker is incorporated in the trip unit The protection setting values are accessible on the screen in setting mode Neutral protection for a 3P circuit breaker is not incorporated in the trip unit It is effected by phase tripping Micrologic 5 and 6 trip units incorporate the ENCT function in order to provide dedicated neutral protection with a 3P circuit breaker In setting mode it is necessary to e Declare whether the neutral has to be protected e Indicate the protection setting value This requires the installation of an ad hoc external sensor for more details on sensor characteristics see the Compact NSX Catalog Setting the Neutral Protection Setting the neutral protection pick up is the same for a 4P circuit breaker as for a 3P circuit breaker with ENCT option Setting on the screen allows a choice of four values for the neutral protection pick up Screen setting Ir setting or adjustment range Isd setting or adjustment range 0 0 0 0 5 Ir 2 Isd 2 1 Ir Isd OSN 3P 1 6 Ir 1 6 Isd 4P 1 1 6 Ir according to value of Ir 1 1 6 Isd according to value of Ir The time delays for the long and short time protections are the same as those for the phases NOTE Micrologic 5 and 6 trip units incorpora
48. With motor mechanism Disconnection Procedure Step Action 1 Switch the circuit breaker to the O OFF position 2 Move both locking levers down as far as they will go 3 Push down both operating handles at the same time until you hear a double click from the locking levers as the locking levers return to their original position The circuit breaker is disconnected NOTE e The auxiliary circuits can be e Automatically disconnected because of the connectors located on the chassis and at the rear of the circuit breaker e Or left connected if the circuit breaker is equipped with a manual auxiliary connector e Itis advisable to open the circuit breaker before disconnecting it If the circuit breaker is in the closed ON position when disconnecting a pre trip mechanism trips the circuit breaker before the pins are disconnected Procedure for Removing the Disconnected Circuit Breaker Step Action 1 Disconnect the manual auxiliary connector if the circuit breaker has one 2 Move both locking levers down as in the disconnection procedure 3 Push down both operating handles as far as the next notch 4 Remove the circuit breaker keeping it horizontal 44 LV434101 04 2012 Mechanical and Electrical Auxiliaries Connection Procedure Step Action 1 Switch the circuit breaker to the O OFF position 2 Move both operating handles down to the l
49. age Protection Lead sealing accessories are used to prevent the following operations Diagram Seal Prohibited operations 1 Vigi module fixing screw Dismantling the Vigi module 2 Transparent protective cover Modification of the Vigi module settings for the settings LV434101 04 2012 85 Description of Micrologic Thermal Magnetic and Electronic Trip Units 3 3 Micrologic Electronic Trip Units Aim This section describes the Micrologic electronic trip units These trip units can be installed on all Compact NSX circuit breakers What Is in This Section This section contains the following topics Topic Page Characteristics of Micrologic Electronic Trip Units 87 Micrologic 2 Electronic Trip Unit 92 Micrologic 5 and 6 Electronic Trip Units 95 Micrologic 1 3 M Electronic Trip Unit 100 Micrologic 2 M Electronic Trip Unit 102 Micrologic 6 E M Electronic Trip Unit 105 Micrologic 2 G Electronic Trip Unit 106 Micrologic 2 AB Electronic Trip Unit 108 86 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Characteristics of Micrologic Electronic Trip Units At a Glance Micrologic electronic trip units are designed to provide multiple functions e Protection of the electrical distribution or specific applications Measurement of instantaneous values measurement of demand values for elect
50. akage Protection The Vigi module which is external to the trip unit is specifically designed to provide earth leakage protection This module can be installed on Compact NSX circuit breakers equipped with either a thermal magnetic trip unit or a Micrologic electronic trip unit Vigi module installed on a Compact NSX circuit breaker Setting the Earth Leakage Protection Installation standards require or recommend particular sensitivity and trip time values for earth leakage protection Type of protection lAn At Installation standards Protection against direct 30 mA lt 40 ms 1 Required contact Fire protection 300 mAor lt lt 40 ms 1 Required if necessary 500 mA Protection against indirect lAn 1s Lowest possible recommended values of lAn and At contact the value of lAn depends on the ground resistance 1 Value of At for a fault current 2 10 lAn Ground Fault Protection Ground fault protection is incorporated in Micrologic 6 trip units see Micrologic 5 and 6 trip units User manual Setting the Ground Fault Protection Installation standards in particular the NEC National Electrical Code defining installation rules in the USA require or recommend the pick up and trip time values for ground fault protection Location lg tg NEC On the incoming supply to the low voltage lt 1 200 A Required distribution and for In gt 1 000 A 3 000 A lt iis Required
51. aker is in the ON position diagram 1 A A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Only qualified persons are authorized to disable the door lock Failure to follow these instructions will result in death or serious injury Preventing Circuit Breaker Closing When the Door is Open The door locking device can also prevent moving the direct rotary handle to the I ON position when the door is open Free door option The lock can be omitted but the rotary handle must then be modified see Quick Reference Guide In this case the two functions door locking and preventing the circuit breaker from being closed when the door is open are inoperative 28 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Lead Sealing Accessories Lead sealing accessories are used to prevent the following operations Diagram Seal Prohibited operations 1 Escutcheon fixing screw e Dismantling the escutcheon e Accessing the auxiliaries e Dismantling the trip unit 2 Transparent protective cover Altering any settings and accessing the test port for the trip units 3 Fixing screw for terminal Accessing the power connection protection against direct contact shields LV434101 04 2012 29 Description of the Compact NSX Circuit Breaker How to Test Your Circuit Breaker With Extended Rotary Handle Pressing the Push to Trip Button The push to trip button c
52. and if necessary repairing the downstream electrical equipment Failure to follow these instructions can result in injury or equipment damage The table below describes the procedure to be followed after a fault trip Step Action 1 Isolate the feed see Maintenance and Servicing Work on the Installation page 16 before inspecting the downstream electrical equipment Look for the cause of the fault Inspect and if necessary repair the downstream equipment 4 Inspect the equipment retightening of connections etc in the event of a short circuit trip 38 LV434101 04 2012 Description of the Compact NSX Circuit Breaker How to Open Close and Reset Your Circuit Breaker With Communicating Motor Mechanism Overview The communicating motor mechanism is managed via the communication bus For this function it is necessary to e Install a BSCM module see BSCM Module page 52 and the NSX cord see NSX Cord page 55 e Use a communicating motor mechanism The BSCM module is connected to the communication bus by the NSX cord e t receives closing opening and reset commands from the circuit breaker e It transmits the circuit breaker states O OFF ON Tripped by SDE NOTE The communicating motor mechanism has a specific reference see the Compact NSX Catalog The BSCM module can be configured using the RSU software see BSCM Module page 52 The schematic for the communi
53. ated Documents User Comments The aim of this manual is to provide users installers and maintenance personnel with the technical information needed to operate Compact NSX circuit breakers and switches in compliance with the IEC standards This document applies to Compact NSX circuit breakers Title of Documentation Reference Number Guide d exploitation des d clencheurs Micrologic 5 et 6 LV434103 Micrologic 5 and 6 trip units User Manual LV434104 Manual de usuario de las unidades de control Micrologic 5 y 6 LV434105 Guide d exploitation Modbus Compact NSX LV434106 Modbus Compact NSX User manual LV434107 Manual de usuario de Modbus Compact NSX LV434108 Guide d exploitation du systeme ULP TRV99100 ULP system User manual TRV99101 Manual de usuario del sistema ULP TRV99102 Catalogue Compact NSX de 100 a 630 A LVPED208001FR Compact NSX 100 630 A Catalogue LVPED208001EN You can download these technical publications and other technical information from our website at www schneider electric com We welcome your comments about this document You can reach us by e mail at techcomm schneider electric com LV434101 04 2012 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Aim of This Chapter This chapter describes the different types of Compact NSX circuit breaker What Is in This Chapter This chapter contains the following sections
54. bes the procedure for checking whether the trip mechanism is working correctly by pressing the push to trip button Step Action Position 1 Close the circuit breaker I ON 2 Press the push to trip button the circuit breaker trips wv 3 Move the toggle switch to the OFF Reset position the circuit breaker is open and O OFF reset 4 Move the toggle switch to the ON position the circuit breaker is closed ON LV434101 04 2012 21 Description of the Compact NSX Circuit Breaker How to Lock Your Circuit Breaker Locking Accessories Locking accessories are used to lock the toggle switch in the ON or O OFF position Use up to 3 padlocks not supplied 5 to 8 mm in diameter with an accessory that is either part of the case diagram 1 or detachable diagram 2 NOTE The circuit breaker s protection function is not disabled by locking the toggle switch in the ON position in the event of a fault it trips without altering its performance When unlocked the toggle switch moves to the w position To return the circuit breaker to service see How to Open Close and Reset Your Circuit Breaker page 20 Lead Sealing Accessories Lead sealing accessories are used to prevent the following operations Diagram Seal Prohibited operations 1 Escutcheon fixing screw e Dismantling the escutcheon Accessing the auxiliaries e Dismantling the trip unit Tran
55. ble on the front face of the Compact NSX circuit breaker after the trip unit has been fitted 100 250A Example Micrologic 5 2 A 250 trip unit e Setting range 100 250 A e In rating 250A LV434101 04 2012 87 Description of Micrologic Thermal Magnetic and Electronic Trip Units Distribution Trip Unit The figure and table below define the protection functions for distribution type Micrologic trip units Thermal Memory 100 2507 0 290 2105 TEE E 140 Pars 6 z gSA 0 100 250A Ir tr ded tsd li xin d No Parameter Description Micrologic 2 5 6 0 In Trip unit setting range minimum setting maximum setting trip r1 o o unit rating In 1 Ir Long time protection pick up Lm 2 tr Long time protection time delay o Eg oO 3 Isd Short time protection pick up Sm 4 tsd Short time protection time delay oO H H 5 lt ON OFF Short time protection l t curve in ON or OFF position m E 6 li Instantaneous protection pick up ljo a u 7 Ig Ground fault protection pick up G 8 tg Ground fault protection time delay 9 t ON OFF Ground fault protection l t curve in ON or OFF position 8H E Adjustable O Non adjustable Not present The thermal memory is used to simulate temperature build up and cooling in conductors caused by current variations according to
56. c trip units The pocket battery module contains two mini batteries which can be connected to the test port on Micrologic electronic trip units 1 2 3 4 Seen on Green LED for checking battery status Yellow LED for checking thermal memory inhibition 3 position slide switch Left Test position Center OFF Right pocket flashlight ONORA Inhibit thermal memory button Two illumination LEDs Two 1 5 V type AA batteries not supplied Connector for connecting to the test port on the Micrologic trip unit Stylus screwdriver Pocket Flashlight Function To use the module as a pocket flashlight move the slide switch to the pocket flashlight position right Preparing the Equipment To prepare the equipment before carrying out maintenance Step Action 1 Slide open the protective cover to access the trip unit connector 2 Click the battery module connector into the test port on the Micrologic trip unit 3 Move the slide switch to the Test position left 4 Check the battery status the green LED must be on LV434101 04 2012 113 Micrologic Maintenance Interface Inspection and Checking To check and inspect the trip unit after preparing the equipment Step Action Inspection 1 Check that the green Ready LED on the trip unit is blinking This means that all the Micrologic trip unit functions are in a satisfactory operational state internal self test
57. c trip units What Is in This Chapter This chapter contains the following topics Topic Page Functions of the Micrologic Maintenance Interface 112 Pocket Battery Module 113 Standalone Maintenance Module 115 Maintenance Module Connected to a PC 118 Maintenance Module Connected to a PC With RSU Software 119 Maintenance Module Connected to a PC With LTU Software 121 LV434101 04 2012 111 Micrologic Maintenance Interface Functions of the Micrologic Maintenance Interface Description of Requirements A 24 V DC power supply is needed for carrying out local checks on a trip unit These can also be done using the maintenance interface Maintenance interface Availability on the trip unit 24 V DC external power supply module o Pocket battery module for Micrologic Standalone maintenance module Maintenance module connected to a PC with RSU software Maintenance module connected to a PC with LTU software W Possible for all Micrologic trip units O Possible for Micrologic 5 and 6 trip units The table below shows the different checking functions of each maintenance interface Maintenance interface Setting Checking Testing Saving settings 24 V DC external power supply module o Pocket battery module o Standalone maintenance module H oO X Maintenance module connected to a PC with m X RSU software Maintenan
58. cated 15 m away the loads on which are mainly for lighting incandescent bulbs heating and small machines The value of the calculated rated current load consumption is In 175 A Installation diagram 1250 kVA 400 V 4 15m I 3 175A Compact NSX250 i TM D Calculations performed on the installation in accordance with the regulations can be used to determine the characteristics of the appropriate Compact NSX to install calculations performed using the Ecodial software Circuit breaker selection Installation Chosen Compact NSX Comments In 2 175 A Compact NSX 250 Determination of case size Distributed neutral 4P 3D Full neutral and linear loads Isc 28 5 kA F Icu performance can be read from rating plate Ikmin 14 0 kA Trip unit protection settings Installation Chosen trip unit Comments In 175A TM D 200 Ir set to 180 Optimizing the choice TM D 250 Ir set to 175 Necessary if extensions envisaged Ikmin 14 0 kA Im 2 000 A or 2 500 A Natural adjustment to the Im protection for distribution compatible with e Inrush currents no trip e Short circuit protection trip 78 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units TM G Thermal Magnetic Trip Unit At a Glance The TM G thermal magnetic trip unit has low thermal and magnetic pick ups It is designed to protect long conductors and or distribution sy
59. cating motor mechanism in the BSCM module can be configured It must be created in strict accordance with the simplified schematic shown in Motor Mechanism page 144 4 CAUTION HAZARD OF EQUIPMENT DAMAGE Wire the motor mechanism in the circuit in strict accordance with the connection diagram Improper wiring of the motor mechanism can result in repeated closing of the circuit breaker on an electrical fault Failure to follow these instructions can result in injury or equipment damage Manual Operation Opening Closing and Resetting Locally The manual operating principle for opening closing and resetting the circuit breaker with motor mechanism locally also applies to the circuit breaker with communicating motor mechanism Automatic Operation Opening Closing and Resetting Remotely The automatic operating principle for opening closing and resetting the circuit breaker with motor mechanism remotely also applies to the circuit breaker with communicating motor mechanism Resetting After a Fault Trip Without modifying the factory configuration the operating principle for resetting after a fault trip on a circuit breaker with motor mechanism also applies to the circuit breaker with communicating motor mechanism Reconfiguration of the BSCM module see Configuring Resetting of the Communicating Motor Mechanism page 54 authorizes remote resetting after a fault trip on a circuit breaker with communicating motor mechanism th
60. ce module connected to a PC with m LTU software W In full for all Micrologic trip units LI In full for Micrologic trip units 5 and 6 for Micrologic 2 trip units only the position of the dials is checked X Only on tripping via the push to trip button Precautions Before Checking Testing or Setting Checking Settings can be checked without the need for any particular precautions However it is recommended that they be carried out by a qualified person Testing When testing Compact NSX circuit breaker trip mechanisms the necessary precautions must be taken e Notto disrupt operations e Notto trip inappropriate alarms or actions A CAUTION RISK OF NUISANCE TRIPPING Only qualified persons are authorized to carry out protection tests Failure to follow these instructions can result in injury or equipment damage Setting Modifying settings requires a thorough knowledge of the installation characteristics and safety rules CAUTION RISK OF NO TRIPPING OR NUISANCE TRIPPING Only qualified persons are authorized to modify the protection parameters Failure to follow these instructions can result in injury or equipment damage 112 LV434101 04 2012 Micrologic Maintenance Interface Pocket Battery Module At a Glance Description The pocket battery module is easily transportable and can be used anywhere for the local inspection and maintenance of Micrologi
61. ck up lo Fine tuning dial for the long time protection pick up Ir Adjustment dial for the short time protection pick up Isd Value of instantaneous protection pick up li Test port Ready LED green Overload pre alarm LED orange 90 Ir Overload alarm LED red 105 Ir 10 Selection dial for setting the neutral protection 4P only OANOOaARWND The trip unit rating In corresponds to the maximum value of the setting range Seiting the Long Time Protection The long time protection pick up Ir is set using two 9 setting dials e The preset dial allows the pick up to be preset to the value lo displayed in amperes on the dial The maximum preset value maximum setting on preset dial equals the trip unit rating value In e The adjustment dial can be used to fine tune the pick up Ir value displayed in multiples of lo on the dial Step Action 1 Set both adjustment dials to maximum for lo to the value In A for Ir to 1 2 Turn the lo adjustment dial higher than the value required The Ir setting value is lo setting A Turn the fine tuning dial to specify the value of Ir from 0 9 lo to lo 4 The Ir setting value is lo A setting x fine tuning The time delay tr for long time protection cannot be adjusted The table below shows the value of the time delay tr for long time protection in seconds according to the overload current in multiples of Ir at 1 5 Ir at 6 Ir at 7 2 Ir tr
62. dard diagram 1 2 This lock can be temporarily disabled so that the door can be opened diagram 2 A amp DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Only qualified persons are authorized to disable the door lock Failure to follow these instructions will result in death or serious injury This lock can be omitted but the extended rotary handle must then be modified see Quick Reference Guide Example An application comprises a circuit breaker for a switchboard incoming supply and several load circuit breakers with extended rotary handles installed behind the same door Locking the door with a single rotary handle incoming supply circuit breaker simplifies maintenance work on the switchboard LV434101 04 2012 31 Description of the Compact NSX Circuit Breaker Locking the Extended Rotary Handle Locking with up to 3 padlocks not supplied with shackle diameter 5 to 8 mm The extended rotary handle can be locked in the ON position or O OFF position e As standard in the O OFF position diagram 1 Padlocking the rotary handle prevents the door being opened Door locking cannot be inhibited e Possible in the two positions ON diagram 2 and O OFF after modification of the rotary handle during installation There is a choice of two options when the rotary handle is locked in the ON position e Standard with door opening locked Door locking cannot be inhibi
63. e Tripping with the push to trip button closing opening e Tripping by MN MX control auxiliaries times and voltage Opening closing resetting by motor mechanism characteristics releases F Check operation of the electronic subassemblies Yes As for level II plus As for level Ill e Micrologic electronic trip units with the aid of special check of the trip plus check of testing tools curves LTU the trip pocket battery software characteristics maintenance interface by primary e RSU and LTU software injection e Vigi modules using the test button T on the front communication see ULP system User manual For a detailed definition of these operations contact Schneider Electric Services Maintenance Following Short Circuit Trip A circuit breaker is tested in severe conditions in accordance with standard IEC 60947 2 to check that it can break a short circuit current at maximum permissible value 3 times After a short circuit fault it is necessary to e Carefully clean off any traces of black smoke the particles may be conducting e Check the power connections and fine wires e Operate the circuit breaker several times at no load at least 5 times Cleaning the Circuit Breakers To avoid dust deposits that can affect the circuit breaker mechanical operation it is recommended that the circuit breakers be cleaned if necessary when maintenance is carried out Non metallic parts Always use a dry cloth
64. e for circuit breakers with standard direct handles see How to Lock Your Circuit Breaker With Direct Rotary Handle page 27 32 LV434101 04 2012 Description of the Compact NSX Circuit Breaker 1 4 Your Circuit Breaker With Motor Mechanism Aim This section describes the controls indications and locking mechanisms accessible on the front of your Compact NSX circuit breaker with motor mechanism There are two possible types of motor mechanism e Motor mechanism which can be used to open and close a circuit breaker remotely by means of electrical commands using pushbuttons e Communicating motor mechanism which can be used to open and close a circuit breaker remotely via the communication bus What Is in This Section This section contains the following topics Topic Page Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker 34 How to Open Close and Reset Your Circuit Breaker With Motor Mechanism 36 How to Open Close and Reset Your Circuit Breaker With Communicating Motor Mechanism 39 How to Lock Your Circuit Breaker 40 LV434101 04 2012 33 Description of the Compact NSX Circuit Breaker Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker Presentation of the Front Face Front Indications The main controls operation indicators settings and locking mechanisms can be accessed directly on the front of your electrically operated circu
65. e isolated and logged in order to carry out this maintenance 134 LV434101 04 2012 Operating the Compact NSX Malfunction Repetitive Tripping The table below shows the checks and or repairs that have to be carried out in relation to the probable causes of the malfunction indicated according to the trip unit type All trip unit types Button R on Vigi module in the out position Vigi module setting Indication Probable cause Checks or repairs SD Supply voltage to the MN undervoltage Check whether the release is powered by a release is too low or subject to significant disturbed supply for example a supply variations powering motors with high power ratings may be disturbed If so connectthe release to a clean or stable supply Supply voltage to an MX shunt release Check that the release connection is correct applied unintentionally compared to the installation diagram SD SDE Operating temperature too high Check the switchboard ventilation and or the temperature in the room SD SDE SDV Inappropriate earth leakage protection Check the value of the natural leakage current Depending on the results e Isolate the equipment with excessive natural leakage current e Orraise the earth leakage Vigi module protection setting observing the safety rules Transient ground fault on the equipment Check whether the fault coincides with commissioning an item of equipment Depending on the res
66. e of the adjustment range Seiting the Long Time Protection The long time protection pick up Ir is set by the 8 setting dial The maximum setting value maximum setting on adjustment dial equals the trip unit rating value In The table below shows the values of the pick up Ir in amperes for long time protection that are displayed directly on the dial with respect to every trip unit rating Trip unit rating In A 100 160 240 400 Pick up Ir A 40 90 140 260 40 100 150 280 50 110 160 300 60 120 170 320 70 130 180 340 80 140 200 360 90 150 220 380 100 160 240 400 The long time protection time delay class cannot be adjusted The table below shows the value of the trip time delay according on the current in the load Current in the load In Trip time delay 1 5 Ir 15s 6 Ir 0 5s 7 2 Ir 0 35 s 108 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Short Time Protection The short time protection pick up Isd is set by a 9 setting dial It is displayed in multiples of Ir Step Action 1 Set the long time protection first the setting pick up is Ir A 2 Turn the Isd adjustment dial to the value required The Isd value is adjustable from 1 5 Ir to 10 Ir 3 Isd is set to Ir A x Isd setting The precision range is 10 The time delay tsd for short time protection
67. e pick up Ir value displayed in multiples of lo on the dial Step Action 1 Set both adjustment dials to maximum for lo to the value In A for Ir to 1 2 Turn the lo preset dial higher than the value required The Ir setting value is lo setting A Turn the fine tuning dial to adjust the value of Ir from 0 9 lo to lo The Ir setting value is lo A setting x fine tuning The time delay tr for long time protection cannot be adjusted The table below shows the value of the time delay tr for long time protection in seconds according to the overload current in multiples of Ir Current in the load In Trip time delay 1 5 Ir 15s 6 Ir 0 5s 7 2 Ir 0 35 s The precision range is 20 0 106 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Short Time Protection The short time protection pick up Isd is set by a 9 setting dial The setting value is expressed in multiples of Ir Step Action 1 Set the long time protection first the setting pick up is Ir A 2 Turn the Isd adjustment dial to the value required The Isd value is adjustable from 1 5 Ir to 9 Ir 3 Isd is set to Ir A x Isd setting The precision range is 10 The time delay tr for short time protection cannot be adjusted e Non trip time 140 ms e Maximum breaking time 200 ms Setting the Instantaneous Pro
68. e precise data on the cause of the electrical fault transmitted by Micrologic 5 and 6 trip units via the communication bus enables the operator to take this decision LV434101 04 2012 39 Description of the Compact NSX Circuit Breaker How to Lock Your Circuit Breaker Locking Accessories Locking accessories enable two methods of locking e Using up to 3 padlocks not supplied 5 to 8 mm in diameter e Using the motor mechanism lock Both locking methods can be used at the same time Action Switch the circuit breaker to the O OFF position Pull out the tab Lock the tab using up to three padlocks 5 to 8 mm diameter Lock the circuit breaker using the keylock leaving the tab out The circuit breaker is locked no commands in auto mode or manu mode will be executed Lead Sealing Accessories Diagram Seal Prohibited operations 1 Motor mechanism fixing Screw e Dismantling the escutcheon Accessing the auxiliaries e Dismantling the trip unit Transparent cover for the motor mechanism Accessing the manual automatic selector depending on its position manual operation 1 or automatic operation is disabled Transparent protective cover for the trip units Altering any settings and accessing the test port Fixing screw for terminal shields Accessing the power connection protection against direct contact 1 In this case no local ope
69. e the SDTAM module The SDTAM module receives data from the Micrologic trip unit via a fiber optic link and makes available 2 inverted solid state outputs assigned to management of tripping due to overload Description Installation and Connection Output Assignment SDTAM module with output terminals Rating plate Slot A Compact NSX 100 250 B Compact NSX 400 630 4 Wiring diagram SDT Indication C Contactor control on The SDTAM module cannot be installed at the same time as an MN MX release and OF contact The SDTAM module and the two solid state outputs must be connected in strict accordance with the wiring diagram The characteristics of the SDTAM module solid state outputs are e Voltage 24 415 V AC V DC e Current e Active outputs 80 mA max e idle outputs 0 25 mA Output 1 SD2 normally open is assigned to indicating thermal faults Output 2 SD4 normally closed is used to open the contactor They are activated 400 ms before the circuit breaker trips in the case of e Long time protection e Phase unbalance protection e Locked rotor protection Micrologic 6 E M e Undercurrent protection Micrologic 6 E M Contactor Safety Control Contactor control by the output 2 signal SD4 optimizes continuity of service in the application This is also a safety feature because e The risks of motor d
70. eaker is in the closed ON position when disconnecting a pre trip mechanism trips the circuit breaker before the pins are disconnected Connection Procedure EZ Ad G IV Step Action 1 Switch the circuit breaker to the O OFF position 2 Connect the circuit breaker 3 Replace both fixing screws NOTE e The auxiliary circuits are automatically disconnected because of the connectors located on the base and at the rear of the circuit breaker e Itis advisable to open the circuit breaker before connecting it If the circuit breaker is in the closed ON position when connecting the pre trip mechanism trips the circuit breaker before the pins are connected 42 LV434101 04 2012 Mechanical and Electrical Auxiliaries Protection Against Direct Contact with Power Circuits An adapter enables the base to take the same isolation and connection accessories as the fixed circuit breaker Circuit breaker connected IP40 with terminal shields diagram 1 Circuit breaker removed IP20 base only diagram 2 IP40 base equipped with terminal shields and blanking covers diagram 3 LV434101 04 2012 43 Mechanical and Electrical Auxiliaries Withdrawable Chassis for Compact NSX At a Glance Withdrawable chassis can be used with all circuit breaker types including those equipped with a Vigi module e With toggle switch e With rotary handle e
71. entional Delay The intentional delay At is set by a dial on the front face The intentional delay value is expressed in milliseconds Table of Setting Values The table below shows the setting values for sensitivity lAn and intentional delay At for each Vigi module type Vigi MH module Vigi MB module lAn A At ms lAn A At ms 0 03 0 0 3 0 0 3 60 1 60 1 150 3 150 3 310 10 310 10 30 NOTE For the sensitivity 0 03 A Vigi MH module the intentional delay cannot be set by design and tripping is instantaneous in conformity with IEC 609472 appendix B Testing and Resetting A test pushbutton T can be accessed on the front of the circuit breaker pressing this button creates a real earth leakage fault that fully tests the device NOTE It is advisable to test that the earth leakage protection works at regular intervals every 6 months Installation standards may require these periodic tests After a ground fault trip the circuit breaker cannot be closed again until the Vigi module has been reset by pressing the reset pushbutton R 84 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Insulation and Dielectric Strength Tests There is a specific procedure for carrying out the insulation and dielectric strength tests on equipment incorporating a Vigi module see Startup page 126 Lead Sealing Accessories for Earth Leak
72. equal to 120 of the short time setting The trip time is Less than 0 2 s for a short time protection with no time delay e Equal to the value of the time delay tsd for a protection with time delay Instantaneous protection Instantaneous protection is definite time e No trip for a current below 80 of the instantaneous setting e Trip for a current equal to 120 of the instantaneous setting The trip time is less than 0 2 s Conductors to be Protected The Neutral Conductor The installation rules closely define the type of protection to be used having regard to e Potential overcurrents overloads and short circuits e Conductors to be protected e Simultaneous cutoff of all conductors including the neutral conductor multi pole breaking NOTE All three of the phase conductors must be protected at all times The neutral conductor if it is distributed and identical to the phases in size i e full neutral is normally protected by the phase protection LV434101 04 2012 67 Description of Micrologic Thermal Magnetic and Electronic Trip Units Description of the Neutral Protection The neutral must have specific protection if e Itis reduced in size compared to the phases e Nonlinear loads generating third order harmonics and multiples thereof are installed It may be necessary to cut off the neutral for functional reasons multiple source diagram or safety reasons working with power off To summarize t
73. eterioration are eliminated e Activation of the output means the application is not working normally Abnormal operation is not caused by an anomaly or internal fault in the motor feeder e The cause of this abnormal operation can be temporary for example a voltage drop causing an overly long starting time The equipment can therefore be powered up again when the cause of the overload or unbalance has disappeared NOTE In order to control a contactor with a consumption exceeding 80 mA it is necessary to provide an interface RBN or RTBT relay 50 LV434101 04 2012 Mechanical and Electrical Auxiliaries Operating Mode The SDTAM module incorporates an operating mode selection dial 8 6 4 h 12 Xx 4 y 117 15 Following activation the method for returning the outputs to their initial state can be e Manual SDTAM switch in the OFF position after canceling the module power supply e Automatic SDTAM switch on one of the time delay adjustment settings following a time delay which can be set between 1 and 15 minutes to allow for the motor cooling time LV434101 04 2012 51 Mechanical and Electrical Auxiliaries BSCM Module At a Glance The BSCM module Breaker Status amp Control Module can be used to send the following data via the communication bus e Device states feedback from OF SD and SDE contacts e Control instructions for the communicating motor mechanism opening closing and
74. eypad 3 Confirm the setting by pressing the OK button twice Micrologic 6 Trip Unit Setting the Protection The settings for protection against overcurrents on the Micrologic 6 trip unit are carried out in the same way as for the Micrologic 5 except the Isd setting which is carried out directly via the keypad The Micrologic 6 trip unit incorporates ground fault protection both pick up and time delay can be adjusted 98 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Ground Fault Protection Neutral Protection The ground fault protection pick up lg is set using the 9 setting preset dial and the keypad e The preset dial allows the pick up to be preset to a value Ig displayed in multiples of In on the dial e The pick up lg is fine tuned via the keypad Step Action 1 Turn the Ig adjustment dial higher than the value required range 0 4 In in steps of 0 1 In for In 100 A 0 2 In in steps of 0 1 In for In 2 100 A Access the lg screen in setting mode padlock open Set Ig to the exact value required in steps of 0 05 In up to 0 2 In using the keypad Confirm the setting by pressing the OK button twice The time delay tg is set directly via the keypad The same setting is also used for selecting option I4 ON Step Action 1 Switch to setting mode padlock open and access the setting screen tg 2
75. gnetic Trip Unit TM 250 D 175 250A 2 2500 1250 o CA 250A 40 C 250 175 225 200 2000 4750 150 N Ir A Im A N 3 e Micrologic 2 Electronic Trip Unit 1 40 100A 2 22 Micrologic lo Ir sd li 1500A s Tu s ow as 50 80 93 A 97 3 7 des E P s m 1 oe 3 1 Micrologic trip unit adjustment range Minimum setting maximum setting trip unit rating In 2 Overload protection setting where applicable 3 Short circuit protection setting where applicable Using the Performance and Settings Data The circuit breaker performance and settings must satisfy the performance and settings required by the installation diagram see Startup page 126 In the case of Micrologic 5 and 6 electronic trip units all settings can be read on the display unit see Micrologic 5 and 6 Electronic Trip Units page 95 LV434101 04 2012 13 Description of the Compact NSX Circuit Breaker Operating the Switchgear When Energized Position of the Actuator Local Indication Remote Indication The position of the actuator indicates the state of the circuit breaker Toggle switch Rotary handle Motor mechanism on O ofr ON Circuit breaker closed ON Circuit breaker closed This position is obtained manually This position is obtained in auto or O OFF Circuit breaker open manu mode This position is obtained manually O OF
76. gram B Micrologic 5 wiring diagram C Micrologic 6 wiring diagram The SDx module cannot be installed at the same time as an MN MX release and OF contact The SDx module and the two solid state outputs must be connected in strict accordance with the wiring diagram The characteristics of the SDx module solid state outputs are e Voltage 24 415 V AC V DC e Current e Active outputs 80 mA max e idle outputs 0 25 mA Default Output Assignment The functions offered by the SDx module outputs depend on the type of trip unit installed with the module e For all Micrologic trip units output 1 SD2 is assigned to the thermal fault indication SDT alarm This alarm indicates that the long time protection was the cause of the trip e Output 2 SD4 is only available with Micrologic 5 and 6 trip units It is assigned e For Micrologic 5 trip units to the long time pre alarm PAL Ir alarm activated as soon as the current in the load reaches 90 Ir or higher e For Micrologic 6 trip units to the ground fault indication alarm SDG NOTE Outputs SDT and SDG return automatically to their initial state when the device is closed 48 LV434101 04 2012 Mechanical and Electrical Auxiliaries Reconfiguring the SDx Module Outputs Output 1 SD2 and output 2 SD4 can be reconfigured on site e Using only Micrologic 5 and 6 trip units e Using the maintenance module e Using the RSU software For more details on the list of alarms and co
77. h sensitivity e Forthe Compact NSX 400 and 630 by adding a Vigi MB module low sensitivity Description The settings and controls are on the front face am n pR 7 E DE i L 2 Ns al TU a ih a z 1 1 Rating plate 2 Test pushbutton 3 Reset pushbutton 4 Intentional delay adjustment dial At 5 Sensitivity pick up adjustment dial lIAn 6 Protective cover for settings 7 Protective cover for connections Installation The Vigi module is installed below the trip unit An intermediate terminal shield is needed this provides protection against direct contact with the connection block downstream of the circuit breaker A Vigi module can be installed on all types of circuit breaker e With toggle switch e With rotary handle e With motor mechanism A circuit breaker complete with Vigi module can be installed on a mounting plate a chassis or a base LV434101 04 2012 83 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Earth Leakage Protection The Vigi module is designed to protect personnel and equipment A A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Only qualified persons are authorized to make adjustments to Vigi modules Failure to follow these instructions will result in death or serious injury The sensitivity lAn is set by a dial on the front face The sensitivity value is expressed in amperes 310 150 eins 60 Setting the Int
78. hat Is in This Section This section contains the following topics Topic Page Where to Find the Controls and Information on Your Circuit Breaker 19 How to Open Close and Reset Your Circuit Breaker 20 How to Test Your Circuit Breaker 21 How to Lock Your Circuit Breaker 22 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Where to Find the Controls and Information on Your Circuit Breaker Presentation of the Front Face The controls operation indicators and settings can be accessed directly on the front of your circuit breaker Rating plate Toggle switch for setting opening and closing Push to trip button Trip unit setting range Trip unit Trip unit adjustment dials ooahaAnh For more information on trip units see Description of Trip Units page 63 LV434101 04 2012 19 Description of the Compact NSX Circuit Breaker How to Open Close and Reset Your Circuit Breaker Opening and Closing Locally e To close the circuit breaker move the toggle switch from the O OFF position to the ON position e To open the circuit breaker move the toggle switch from the ON position to the O OFF position Resetting after a Trip Your circuit breaker has tripped the toggle switch has moved from the I ON position to the W position The fact that a protection has tripped does not remedy the cause of the fault on the do
79. he neutral conductor can be e Non distributed 3P e Distributed not cut off and not protected 3P e Distributed not cut off but protected 3P with ENCT option see Micrologic 5 and 6 trip units User manual e Distributed cut off and protected 4P Compact NSX trip units are suitable for all protection types Compact NSX Possibilities Neutral protection 3P 3P 3D None 3P ENCT 3P 3D None 3P 3D N 2 Half neutral 3P 3D N Full neutral 3P 3D OSN 1 Oversized neutral 4P 4P 3D None 4P 3D N 2 Half neutral 4P 4D Full neutral 4P 4D OSN 1 Oversized neutral 1 OSN OverSized Neutral protection is used when high third harmonic and multiples of the third harmonic currents are present OSN protection is installed on Micrologic 5 and 6 trip units see Micrologic 5 and 6 trip units User manual P Breaking pole D Pole protected by the trip unit N Neutral protection 68 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Protection Against Ground Faults At a Glance Protection against ground faults is provided by e Earth leakage protection in the case of low intensity fault currents fault current limitation is linked to ground connection diagram TT e Ground fault protection in the case of high intensity fault currents this protection can be used only with ground connection diagram TN S Earth Le
80. hecks whether the trip mechanism is working correctly The push to trip button is not accessible on the front face the test has to be conducted with the door open e g w OFF Trip Step Action Position 1 Switch the circuit breaker to the open O OFF position O OFF Open the door 2 Use a special tool 1 to turn the extension shaft clockwise and switch the circuit breaker ON to the ON position The circuit breaker is ready for the test Press the push to trip button the circuit breaker trips Trip Use a special tool 1 to turn the extension shaft anticlockwise and switch the circuit O OFF breaker from the Trip position to the O OFF position the circuit breaker is in the open position 5 Close the door 1 The special tool can be e A standard rotary handle designed for tests e A flat wrench taking care not to damage either the extension shaft hollow square tube 10 mm x 10 mm or its surface treatment 30 LV434101 04 2012 Description of the Compact NSX Circuit Breaker How to Lock Your Circuit Breaker With Extended Rotary Handle Locking Functions Offered Locking the Door The extended rotary handle offers several locking functions to e Prevent the door being opened e Prevent the rotary handle being operated Some locking functions can be inhibited on different adaptations The extended rotary handle locks the door in the ON position as stan
81. ial relative to the position of the Isd dial and the values of the pick up li for instantaneous protection Trip unit rating In A 320 500 Pick up Isd A 1600 2500 1920 3000 2240 3500 2560 4000 2880 4500 3200 5000 3520 5500 3840 6000 4160 6500 Pick up li A 4800 6500 The precision range is 15 100 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Example of Application Protection of a motor feeder e Power supplied by a 1 250 kVA transformer 400 V 496 e Power supply downstream of a motor feeder with the following characteristics e 3 component motor feeder circuit breaker thermal relay contactor e Direct on line starting e Motor power 160 kW i e In 280A e Type 2 coordination Installation diagram 1250 kVA 400 V 4 Paaa O Compact NSX400 Micrologic 1 3 M Calculations performed on the installation in accordance with the regulations can be used to determine the characteristics of the appropriate Compact NSX to install calculations performed using the Ecodial software Circuit breaker selection Installation Chosen Compact NSX Comments In 280A Compact NSX 400 Motor circuit breaker case size Micrologic 1 3 M 320 Isc 28 5 kA F Icu performance can be read from rating plate Ikmin 18 3 kA Trip unit protection settings Installation Trip unit setting Comme
82. ials and a microswitch LCD display Keypad anhowndD Indication LEDs Indication LEDs on the front indicate the operational state of the trip unit see Indication LEDs page 90 Test Port Micrologic trip units feature a test port specifically for maintenance actions see Test Port page 90 Set of 2 Dials and a Microswitch The 2 dials are assigned to presetting the protection parameters The microswitch is assigned to locking unlocking the protection parameter settings 140 Po17s lt 140 180 175 Wl 1 MK 200 1 e 125 9200 5 125 200 6 11097 225 1109 225 10 2 100 250 ip A 29 Ir A AAG Rita A o o 2A 3m 97 9 9 2B 8 9 9 v 8 O 1 9 159 0 9 t 2 orr 9 3 Isd xir 3 Ig xIn No Description 1 Pick up Ir preset dial for all Micrologic trip unit types 2 Preset dial e 2A Micrologic 5 For the short time protection pick up Isd e 2B Micrologic 6 For the ground fault protection pick up lg 3 Microswitch for locking unlocking the protection parameter settings LV434101 04 2012 95 Description of Micrologic Thermal Magnetic and Electronic Trip Units Display Unit The display unit provides all the information needed to use the trip unit The list of protection parameters is customized according to the Micrologic trip unit type 5 6 or 6 E M 1 2 3 4 5 Ir tr isd tsd li xln N 1A 2
83. in settings and use the maintenance interface to check in detail NOTE In the case of Compact NSX circuit breakers fitted with a Vigi module check for the presence of the intermediate terminal shield without which the earth leakage protection will not work see below LV434101 04 2012 127 Operating the Compact NSX D Inspection of Mechanical Equipment Check the mounting and mechanical strength e Ofcircuit breakers in the switchboard and of power connections e Ofauxiliaries and accessories on the circuit breakers e Rotary handles or motor mechanisms e Installation accessories terminal shields escutcheons etc e Auxiliary circuit connections E Mechanical Operation Check the circuit breaker mechanical operation see Description of the Compact NSX Circuit Breaker page 9 e Opening e Closing e Tripping with the push to trip button e Resetting F Operation of Electronic Trip Units and Vigi Modules Check that the following are working correctly e Micrologic electronic trip units with the aid of special testing tools e External battery e Configuration and maintenance module e Vigi modules by operating test button T on the front this test checks the whole measurement system and guarantees tripping on earth leakage fault e Communication via the bus see ULP system User manual 128 LV434101 04 2012 Operating the Compact NSX Environmental Conditions Ambient Temperature The ambient tempe
84. intenance can be carried out every 3 years If just one of the conditions is more severe maintenance must be carried out more frequently for advice contact Schneider Electric Services Functions linked specifically to safety require particular intervals NOTE It is advisable to test operation of the remote electrical stop commands and the earth leakage protection Vigi module at regular intervals every 6 months LV434101 04 2012 131 Operating the Compact NSX Inspection and Servicing Operations Required Inspection and servicing chiefly consist of checks and inspections D E and F as defined for the commissioning phase see Startup page 126 Inspection definition Level Il Level Ill Level IV D Visually inspect the circuit breaker general condition Yes As for level Il As for level Ill escutcheon trip unit case chassis connections plus Check the mounting and mechanical strength measurement of e Ofcircuit breakers in the switchboard and of power insulation connections resistance e Ofauxiliaries and accessories on the circuit breakers Rotary handles or motor mechanisms Installation accessories terminal shields escutcheons etc e Auxiliary circuit connections e Ofthe chassis withdrawable circuit breaker e Oflocks padlocks and padlock support tabs E Check the circuit breaker mechanical operation Yes As for level II plus As for level Ill Opening closing and resetting check of the
85. ion Micrologic 6 E M electronic trip units are suitable for all types of motor feeder application They also incorporate metering functions operational and maintenance assistance functions and communication functions as standard The Micrologic 6 E M electronic trip unit can be used to create a type 1 or type 2 coordination motor feeder For more detailed information on the operation of Micrologic 6 E M trip units refer to the Micrologic 5 and 6 trip units User manual The adjustment dials and indications are on the front face 160 320A Micrologic 6 3 E M i 7 In rating of the Micrologic 6 3 E M electronic trip unit Protection pick up Ir and Ig adjustment dials Locking unlocking microswitch Display unit Instantaneous protection pick up value li Keypad Test port Phase unbalance Ready LED green 0 Alarm LED OONOORWD Overcurrent Protections The overcurrent protection settings on the Micrologic 6 E M trip unit are entered in the same way as for the Micrologic 6 except the fi setting for the short time protections and ground fault protection which is always OFF see Micrologic 5 and 6 Electronic Trip Units page 95 Additional Protection The Micrologic 6 E M trip unit incorporates additional protection functions for LSIG protection e Phase unbalance or phase loss protection e Locked rotor protection e Undercurrent protection e Long start protection e Monitoring motor insulation du
86. ion is expressed in amperes e This value corresponds to the operating current used in the motor application e The maximum Ir setting corresponds to the trip unit rating In 72 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units 3 2 TM D TM G Thermal Magnetic and MA Magnetic Trip Units Aim This section describes the thermal magnetic trip units These trip units are mounted on Compact NSX circuit breakers rated 100 A 160 A and 250 A What Is in This Section This section contains the following topics Topic Page Characteristics of Thermal Magnetic Trip Units 74 TM D Thermal Magnetic Trip Unit 76 TM G Thermal Magnetic Trip Unit 79 MA Magnetic Trip Unit 81 Vigi Earth Leakage Protection Module 83 LV434101 04 2012 73 Description of Micrologic Thermal Magnetic and Electronic Trip Units Characteristics of Thermal Magnetic Trip Units At a Glance Thermal magnetic trip units are designed to provide protection for distribution or for specific applications Identification Type of protection TM D Thermal magnetic trip unit TM G Thermal magnetic trip unit with low pick up for protecting generators very long feeds MA Magnetic only trip unit for protecting motors transformers etc Accessible Protections and Settings The adjustment dials are on the front of the trip units 175 250A tA 2500
87. isplay e Micrologic 2 Tripped by short time or instantaneous protection m c e Micrologic 5 and 6 Tripped by instantaneous OMM ee protection on short circuit on phase 2 at 18 kA SD SDE SD SDE Micrologic 5 e TM D Tripped by earth leakage protection SDV SDV SD SDE SDV e Micrologic 2 Tripped by earth leakage protection Button Ron Button Ron Button R on Vigi module in e Micrologic 5 and 6 Tripped by earth leakage Vigi module Vigi modulein the out position protection no other faults reported in the out the out Information on the display position position ir tr isd tsd li xIn Micrologic 6 e Micrologic 6 Tripped by ground fault protection SD SDE SDG LV434101 04 2012 133 Operating the Compact NSX Maintenance of the Equipment Following Trip on Fault The fact that the protection has tripped does not remedy the cause of the fault on the downstream equipment CAUTION RISK OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and if necessary repairing the downstream electrical equipment Failure to follow these instructions can result in injury or equipment damage The feed must be isolated before inspecting the electrical equipment downstream of the protection A amp DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH e Apply appropriate personal protective equipment PPE and follow safe electrical work practices e This e
88. it breaker with motor mechanism Rating plate Stored energy control in manual mode Main contacts position indicator Control position indicator Padlocking in O OFF position Manual automatic operating mode selector Keylocking in O OFF position Compact NSX 400 630 only Lead sealing accessory Closing I and opening O controls 0 Trip unit OOANODOURWND Two operation indicators on the front of the trip unit show the position and state of the motor mechanism Main contacts position indicator e ON position on e O OFF or tripped position NOTE The tripped position is distinguished from the O OFF position by means of the SD or SDE indication contact Control charge indicator e Stored energy control charged e Stored energy control discharged discharged Stored energy control is used only to provide the necessary energy for the circuit breaker closing switch The energy for tripping is supplied directly by the mechanism incorporated in the circuit breaker 34 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Manu Auto Selector manu auto e n automatic operating mode only electrical commands are executed e In manual operating mode all electrical commands are disabled LV434101 04 2012 35 Description of the Compact NSX Circuit Breaker How to Open Close and Reset Your Circuit Breaker With Motor Mechanism At a G
89. it breaker is closed e The contact position indicator changes to ON e The charge indicator changes to discharged Open the circuit breaker 2 Press the opening switch O B The circuit breaker is open The contact position indicator changes to O OFF e The charge indicator stays on discharged Reset the circuit breaker 3 Reset the stored energy control by operating the handle 8 times C The circuit breaker is ready to be closed e The contact position indicator stays on O OFF e The charge indicator changes to charged 36 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Automatic Operation Opening Closing and Resetting Remotely Move the selector to the Auto position pi of operation mm OFF MU HOA B osse charged serene a Step Action Close Open the circuit breaker 1 Send a close command ON A The circuit breaker is closed e The contact position indicator changes to ON e The charge indicator changes to discharged Send an open command OFF The circuit breaker opens e The contact position indicator changes to O OFF e The charge indicator stays on discharged Reset the stored energy control 3 reset modes are offered depending on the connection diagram see Motor Mechanism page 144 e Automatic reset e Remote reset via pushbutton e
90. l The figure below illustrates the connections from the NSX cord to the Modbus communication interface module or the front display module FDM121 A NSX cord no 2 on its own connected directly to the Modbus communication interface module no 1 B NSX cord no 2 connected to the BSCM module no 3 and directly to the Modbus communication interface module no 1 C NSX cord no 2 connected to the BSCM module no 3 and to the Modbus communication interface module no 1 via the front display module FDM121 no 4 56 LV434101 04 2012 Mechanical and Electrical Auxiliaries Isolated NSX Cord At a Glance For applications gt 480 V AC an isolated variant of the NSX cord needs to be used terminated by an electronic module with a female RJ45 connector A ULP cord must be used to connect the isolated NSX cord electronic module to a ULP module The reference for the isolated NSX cord is LV434204 The isolated NSX cord electronic module must be supplied with 24 V DC in order to guarantee isolation of the ULP system Electronic Module Characteristics The table below summarizes the electronic module characteristics Characteristic Value Dimensions 27 x 27 x 27 mm Mounting On DIN rail Degree of protection of the installed module e On the front panel wall mounted enclosure IP40 e On the connections behind the enclosure door IP20 Operating temperature 25 70 C Power supply voltage 2
91. lance The motor mechanism can be used to open and close a circuit breaker remotely by means of electrical commands There are many applications e Automation of electrical distribution in order to optimize operating costs e Normal standby source changeover changes over to a replacement source in order to improve continuity of service e Load shedding reconnection in order to optimize tariff based contracts The motor mechanism must be wired in strict accordance with the connection diagram shown in Motor Mechanism page 144 A CAUTION HAZARD OF EQUIPMENT DAMAGE Wire the motor mechanism in the circuit in strict accordance with the connection diagram Improper wiring of the motor mechanism can result in repeated closing of the circuit breaker on an electrical fault Failure to follow these instructions can result in injury or equipment damage In automatic operating mode wiring the SDE contact prevents the circuit breaker from resetting automatically on an electrical fault For more details on the SDE contact see ndication Contacts page 47 Manual Operation Opening Closing and Resetting Locally Move the selector to the Manu position Cycle of operation A Check that the stored energy control is actually charged charge indicator on charged C Otherwise reset the circuit breaker 3 Step Action Close the circuit breaker 1 Press the closing switch I ON A The circu
92. le diameter of 5 to 8 mm to prevent connection diagram 1 When a lock is used the circuit breaker is locked in the connected position diagram 2 or the disconnected position diagram 3 46 LV434101 04 2012 Mechanical and Electrical Auxiliaries Indication Contacts Characteristics of Indication Contacts The indication contacts are located under the front face of the circuit breaker under the motor mechanism or in the rotary handle They are installed in a compartment which is isolated from the power circuits There are three types e Standard volt free contact e Low level volt free contact e Solid state output for SDx and SDTAM modules Standard and Low Level Volt Free Contacts Standard and low level volt free contacts are the common point changeover type NF NO NC Normally Closed contact NO Normally Open contact NOTE A single contact model provides all the OF SD SDE and SDV indication functions the function of the OF SD and SDE contacts is determined by their position inside the case The table below describes the operation of standard and low level volt free contacts Name Definition OF Changeover The NO contact is normally open when the circuit breaker is in the O OFF position SD Trip indication This contact indicates that the circuit breaker has tripped due to Long time protection Short time protection Ground fault protection An earth leakage fault detected by the Vigi
93. le window Breaker Status amp Control Module Total OF counter Contact counter Threshold OF 0 5000 SD 0 SDE n In the Threshold window indicate the maximum number of times the device can open and close for example maximum number of operations before level IV maintenance see Maintaining the Compact NSX During Operation page 131 In the Breaker I O tab select the Communicating Motor mechanism module window left hand side Communicating Motor mechanism module Commands Counter Open JO Threshold Close 0 5000 Reset 0 In the Threshold window indicate the maximum number of closures that must not be exceeded for the communicating motor mechanism For more details on the maintenance indicators for Micrologic trip units associated with a BSCM module see the Micrologic 5 and 6 trip units User manual Configuring Resetting of the Communicating Motor Mechanism In the Breaker I O tab select the Communicating Motor mechanism module window schematic on the right hand side Communicating Motor mechanism module i Enable amp Reset Commands Counter Open 0 Threshold Close 0 5000 Reset 0 H Reset command e Clicking on the blue switch Enable Reset even if SDE on the schematic the blue switch closes authorizes resetting of the mechanism via the communication bus even after an electrical fault trip e Clicking on the blue switch Enable Automatic Reset the blue switch closes authorizes a
94. ment dial to the value required the setting range is 5 13 Ir in steps of Ir 9 settings 3 Isd is set to Ir A x Isd setting The precision range is 15 The short time protection time delay cannot be adjusted 30 ms Setting the Instantaneous Protection The table below shows the pick up li values in amperes according to the trip unit rating In Trip unit rating In A 25 50 100 150 220 320 500 Pick up li A 425 750 1500 2250 3300 4800 7500 The precision range is 15 LV434101 04 2012 103 Description of Micrologic Thermal Magnetic and Electronic Trip Units Phase Unbalance Protection Micrologic 2 M trip units incorporate a protection against phase unbalance The characteristics are e Protection not adjustable e Pick up 30 phase unbalance the precision range is 20 e Overshoot time 4 s in steady state 0 7 s during startup Example A phase unbalance exceeding 3096 for longer than 4 s in steady state causes the protection to trip Contactor Opening Command Trip units fitted with an SDTAM module can use output 2 SD4 from this module to activate the contactor opening command for the motor feeder before the circuit breaker trips see SDTAM Module Micrologic 2 M and 6 E M page 50 Example of Application Protection of a motor feeder with the following characteristics e Power supplied by a 1 2
95. n Diagrams Modbus Module Detailed connection of the circuit breakers on communication network Modbus G3 G4 EGX MPS100 DB402839 eps 24 V Power supply G1 An ii i a ae 1 1 i EH Modbus line N O O AWAY if UV termination White Blue cj T O 24V OV L DO 24V OV I DO Modbus Communication Interface Module Compact NSX um NN NN IT White Blue eI 1 O O Oo eti o1 811 812 311 314 O O o gS i ogs 22599 979 3rz79e9 a2es50 02 1 asa FECERO gt cT cD ce Sek Y s x SEE gt i TETEE Ss DIT O Chassis na o N T o a ep a p Masterpact NT r ui BCM BCM Compact NS630b Masterpact NT 148 LV434101 04 2012 LV434101 Compact NSX circuit breakers User manual Compact NSX CE LV434101 France 3 AI 022128 AAV66162 2012 Schneider Electric All rights reserved Schneider Electric Industries SAS 35 rue Joseph Monier CS 30323 F 92506 Rueil Malmaison Cedex RCS Nanterre 954 503 439 Capital social 896 313 776 www schneider electric com LV434101 As standards specifications and designs change from time to time please ask for confirmation of the information given in this publication KY hs Printed on recycled paper
96. n risks from overload currents are a gradual deterioration in equipment or a fire e Short circuit currents These can be due to a deterioration in the plant or within a receiver for example a short circuit between two phases in the winding of a motor being operated in severe conditions vibration damp and or corrosive atmosphere The risks associated with short circuit currents are the instantaneous deterioration of equipment a fire or even an explosion due to the high energy level at the site of the fault The Ground Fault Category Ground faults can be due to abnormal aging of the plant of a load or conductors that have deteriorated in damp conditions The intensity of such fault currents depends on the ground connection diagram used These currents can be e Very low in value i e well below the rated feed current in the TT system these are known as leakage currents or residual ground fault currents e High in value i e identical to a short circuit current in the TN S system these are known as ground fault currents Whatever the value of ground leakage currents they present a very grave risk of electrocution or fire 66 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Protection Against Overcurrents in Electrical Distribution Compact NSX Circuit Breaker Overcurrent Trip Units Compact NSX circuit breaker trip units are designed to handle overcurrents overload currents and
97. n the maintenance module mechanical cap in the central position Start up the PC Set up the connections between the PC and the maintenance module or connect the Bluetooth connectors 4 Click the maintenance module connector into the test port on the Micrologic trip unit Inspection and Checking Check and inspect the trip unit after preparing the equipment Step Action Inspection 1 Check that the green Ready LED is blinking This means that all the Micrologic functions are in a satisfactory operational state internal self test Checking the settings 2 Run the LTU software A description of the Micrologic variant tested appears under the Trip unit on test tab The setting values appear in the area at the foot of the screen D clencheur pr t tester It tr Isd tsd li IN 32 4 16 s 192 4 00s 6004 404 Q 800dn 6Ir B xlr Ft off 15 4n isd 240 4 Tests Using the Maintenance Module When connected to a PC the maintenance module can operate in standalone mode all three test functions are accessible see Standalone Maintenance Module page 115 Test Using the LTU Software Automatic TEST tab Step Action 1 Run the LTU software A description of the Micrologic variant tested appears under the Trip unit on test tab The setting values appear in the area at the foot of the screen Select the Automatic TEST tab Click on Run automatic tests Fault curren
98. nerator protection The loads mainly consist of heating and lighting incandescent bulbs The neutral is distributed Installation diagram 40 kVA 400 V x 30 GE Compact NSX100 TM G Calculations performed on the installation in accordance with the regulations have determined the characteristics of the appropriate Compact NSX to install calculations performed using the Ecodial software Circuit breaker selection Installation Chosen Compact NSX Comments In 257A Compact NSX 100 Determination of case size Distributed neutral 4P 3D Full neutral and linear loads Isc 0 3 kA B Icu performance can be read from rating plate Ikmin 0 25 kA TM G Generator protection circuit breaker Trip unit protection settings Installation Chosen trip unit Comments In 257A TM G 63 Ir set to 57 Thermal protection Ir setting Ikmin 0 25 kA Im 2125 A Low pick up magnetic protection Im cannot be adjusted 80 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units MA Magnetic Trip Unit At a Glance The MA trip unit has a high magnetic pick up It is designed to provide motor feeders with short circuit protection The MA trip unit can be used to create a type 1 or type 2 coordination motor feeder Description The adjustment dial is on the front of the trip unit 1 MA220 3080 MA 220 mt NT 220A 65 C foot 2 2640 2200 2420 42 No
99. nfiguration options see Maintenance Module Connected to a PC With RSU Software page 119 and the Micrologic 5 and 6 trip units User manual hr Micrologic RSU C MicrologicWtility RSU_A WData File Remote functions Setup Live update Help Micrologic selection z Trip unit Distribution w Micrologic5 2E 4P v mfo gt fier Schneider d Electric P N LV428106 v Z Service M Basic prot BI Alarms Outputs E Breaker vo ER Interface Fa Passwords TOO Iv SDX SDX designation Assigned event Mode Delay s SDX Out 1 Long time prot Ir SDX Out 2 Pre Alarm Ir PAL Ir Non latching output The operating mode of the outputs can be configured e Without latching e With latching the return to the initial state takes place via the communication bus or via the Micrologic keypad e Time delayed without latching the return to the initial state takes place at the end of the time delay e Forced to the closed state the return to the initial state takes place via the communication bus or via the Micrologic keypad e Forced to the open state the return to the initial state takes place via the communication bus or via the Micrologic keypad LV434101 04 2012 49 Mechanical and Electrical Auxiliaries SDTAM Module Micrologic 2 M and 6 E M At a Glance Compact NSX circuit breakers equipped with a Micrologic 2 M and 6 E M trip unit designed to protect motors can tak
100. ng the maintenance module to the test port on the trip unit NOTE If the USB port does not supply enough power to energize the Micrologic trip unit and the maintenance module the three test LEDs pM on the maintenance module start to blink The maintenance module must then be energized by the power supply module supplied with the maintenance kit Connection via Bluetooth Micrologic 4 2 RJ45 cord for Bluetooth transmitter receiver on PC PS 2 RJ45 cord for Bluetooth transmitter receiver on the maintenance module Micrologic cord for connecting the maintenance module to the test port on the trip unit Maintenance module power supply unit kOoOnNnD NOTE Use the power supply unit supplied with the kit NOTE Connect the Bluetooth option firmly to the maintenance module with the PS 2 connector do not use the RJ45 connection used in the ULP connection method by forcing the mechanical cap Hardware and Software The following hardware and software are required for operational use e Hardware e The maintenance kit provides all the necessary connections the Bluetooth wireless method is optional and has to be ordered separately e The test PC is standard with a minimum Windows XP configuration and a USB1 port e Software Two software options are offered e RSU protection and alarm parameter setting software This free software can be downloaded from www schneider electric com e LTU settings test software fa
101. nnected position carriage switch CE 2 Disconnected position carriage switch CD F CD Disconnected position carriage switch CE Connected position carriage switch Voltage Releases Voltage releases are used to trip circuit breakers deliberately by means of an electrical signal These auxiliaries are installed in the case under the front face The characteristics of these auxiliaries comply with the recommendations of standard IEC 60 947 2 MN release Undervoltage release This release is used to e Trip the Compact NSX circuit breaker when the supply voltage is less than 0 35 times nominal voltage Un If the voltage is between 0 35 and 0 7 times the rated voltage Un opening is possible but not guaranteed Above 0 7 times the rated voltage Un opening is impossible e Close the circuit breaker again once the voltage reaches 0 85 times the rated voltage This type of voltage release is used for failsafe emergency stops Time delay unit for MN release This auxiliary eliminates nuisance tripping of an undervoltage release due to transient voltage dips lasting 200 ms There are 2 types of time delay unit adjustable or non adjustable Shunt release This release causes the Compact NSX circuit breaker to open on the appearance of a voltage exceeding 0 7 times the rated voltage 58 LV434101 04 2012 Mechanical and Elect
102. ns NOTE Thermal memory inhibition is immediately canceled the yellow confirmation LED goes out if in the course of running the test the slide switch is moved to another position 114 LV434101 04 2012 Micrologic Maintenance Interface Standalone Maintenance Module At a Glance The standalone maintenance module is used for the following e Maintenance checks and inspections e Tripping tests e The inhibition functions required for tripping tests by primary current injection maintenance level IV A maintenance kit comprising the maintenance module and its accessories is available see the Compact NSX Catalog Description of Maintenance Kit The maintenance kit comprises the following elements Maintenance module Standard USB cord for connection to the PC Special cord for connecting the maintenance module to the test port on the trip unit Standard RJ45 cord for connecting the maintenance module to a ULP module Maintenance module power supply unit Quick reference guide Optionally A Bluetooth wireless connection to PC NO ohWODND Description of Maintenance Module Micrologic psg x cM 96oo 24V Mechanical cap in central position Green ON LED Test buttons 3 with LEDs 3 Connection socket for special cord connecting maintenance module to test port on trip unit Connection socket for power supply unit Special cord for connecting the maintenance module to
103. nts Ikmin 18 3 kA Isd 2 4 160A The Isd protection setting is compatible with Inrush current 7 14 In e Transient startup currents e Short circuit protection LV434101 04 2012 101 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 2 M Electronic Trip Unit At a Glance The Micrologic 2 M electronic trip unit is suitable for protecting motor feeders on standard applications The thermal trip curves are calculated for self ventilated motors The Micrologic 2 M electronic trip unit can be used to create a type 1 or type 2 coordination motor feeder Description The adjustment dials and indications are on the front face e Micrologic 2 3 M 7 160 320A Micrologic 2 3M liz4800A IEC a AON Micrologic 2 2 M 2 3 M electronic trip unit setting range Adjustment dial for the long time protection pick up Ir Selection dial for the long time protection time delay class Adjustment dial for the short time protection pick up Isd Value of instantaneous protection pick up li Test port Phase unbalance Ready LED green Alarm LED The trip unit rating In corresponds to the maximum value of the setting range OANO OA RWOND 102 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Long Time Protection The long time protection is set by 2 dials according to the starting characteristics of the applica
104. o 4 xlo 2 3 4 Example of Setting the Short Time Protection Setting the short time protection pick up Isd to 400 A on a Micrologic 2 2 rated In 100 A on a 50 A feed see diagram below Step Action 1 The setting pick up Ir for long time protection is equal to the feeder operating current i e Ir 50 A 2 Setting calculation 400 A 8x50A Position the Isd adjustment dial on setting 8 3 Isd is set to 50 A x 8 400 A The action in step 2 on the adjustment dial modifies the trip curve as shown 3 t Ir Isd 95 5 554 94 E oe 4 4 6 6 97 3 a 7 982 Apki 1 1 5 10 A jj Isd 2 3 94 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 5 and 6 Electronic Trip Units At a Glance Micrologic 5 and 6 electronic trip units provide protection which can be adapted to all types of application They also incorporate metering functions operational and maintenance assistance functions and communication functions as standard The information given in this guide is a summary For more detailed information on the operation of Micrologic 5 and 6 trip units refer to the Micrologic 5 and 6 trip units User manual Description Front of a Micrologic 5 2 A trip unit for 3P circuit breaker Ir tr isd tsd li xln Ge Micrologic Wo Indication LEDs Test port Set of 2 d
105. of power including the possibility of backfeeding and control power e Always use a properly rated voltage sensing device to confirm power is off e Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury LV434101 04 2012 Description of the Compact NSX Circuit Breaker Maintenance Work Following Trip Fault 4 CAUTION RISK OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and if necessary repairing the downstream electrical equipment Failure to follow these instructions can result in injury or equipment damage The fact that a protection has tripped does not remedy the cause of the fault on the downstream electrical equipment The table below describes the procedure to be followed after a fault trip Step Action 1 Isolate the feed see Maintenance and Servicing Work on the Installation page 16 before inspecting the downstream electrical equipment Look for the cause of the fault Inspect and if necessary repair the downstream equipment 2 3 4 Inspect the equipment retightening of connections etc in the event of a short circuit trip 5 Close the circuit breaker again For more information on troubleshooting and restarting following a fault see What to do in the Event of a Trip page 133 Checking Te
106. ontact The NSX cord goes in the SD slot instead of the auxiliary contact 2 Cable equipped with an Communication 3 cable lengths are available RJ45 connector for the bus 0 3 m 1 3 m and 3 m Modbus communication interface module or the front display module FDM121 3 Internal link to the Communication With the BSCM module the NSX Micrologic trip unit 5 or bus cord also transmits the Compact 6 or the BSCM module NSX circuit breaker states The NSX cord also provides the 24 V DC power supply e For the Micrologic 5 or 6 trip unit without BSCM module e Orfor the BSCM module when this module is installed The NSX cord cannot be installed at the same time as the SD contact The figure below illustrates installation of an NSX cord Compact NSX Compact NSX 100 250 400 630 100 250 400 630 A NSX cord used on its own B NSX cord used with a BSCM module Green NSX cord Gray BSCM module The NSX cord can be installed on site LV434101 04 2012 55 Mechanical and Electrical Auxiliaries Connection The NSX cord connects e Directly to the Modbus communication interface module e Or via the front display module FDM121 see the Micrologic 5 and 6 trip units User manua
107. ontact or the SDE contact The BSCM module can be installed on site Setting Up the BSCM Module Setting up the BSCM module on the communication bus requires no addressing LED indication on the BSCM module confirms that the BSCM module is working LED indication Information ON 50 ms OFF 950 ms Correct operation ON 250 ms OFF 250 ms Addressing error ON 1000 ms OFF 1000 ms Communication test test button on the Modbus interface module ON 500 ms OFF 500 ms No communication with other modules ON continuously Internal error on the BSCM module OFF continuously BSCM module de energized 52 LV434101 04 2012 Mechanical and Electrical Auxiliaries Data Sent and Configuration of the BSCM Module The BSCM module can be accessed and configured on site e Using the RSU software e Using a PC connected to the maintenance module itself connected e To the trip unit test port Micrologic 5 and 6 trip units e Orto the RJ45 socket of a ULP module Modbus communication interface module or front display module FDM121 The BSCM module sends data on the operational states of the Compact NSX circuit breaker and its communicating motor mechanism if present in the EBreakerl 0 tab H Micrologic RSU C Micrologic Wtility RSU_A Data New rsa File Remote functions Setup Live update Help Micrologic selection Schneider Electric 4 Trip unit Distribution Micrologic6 2E 3P x mf250 JEC
108. oor escutcheon e The operation indicators and settings are only accessible when the door is open e Thelocking mechanisms can be operated on the case door open or on the door escutcheon door closed Rating plate Direct rotary handle Extended rotary handle Push to trip button Trip unit Trip unit adjusting dials oa hWnd For more information on trip units see Description of Trip Units page 63 24 LV434101 04 2012 Description of the Compact NSX Circuit Breaker How to Open Close and Reset Your Circuit Breaker Opening and Closing Locally e To close the circuit breaker turn the rotary handle clockwise from the O OFF position to the ON position e To open the circuit breaker turn the rotary handle anticlockwise from the ON position to the O OFF position Resetting After a Trip Your circuit breaker has tripped the rotary handle has moved from the ON position to the Trip Tripped position The fact that a protection has tripped does not remedy the cause of the fault on the downstream electrical equipment 4 CAUTION RISK OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and if necessary repairing the downstream electrical equipment Failure to follow these instructions can result in injury or equipment damage The table below describes the procedure to be followed after a fault trip O OF
109. operating voltage V 690 590 520 460 Rated thermal current A at 40 C In 0 96 x In 0 93 x In 0 9 x In 130 LV434101 04 2012 Operating the Compact NSX Maintaining the Compact NSX During Operation At a Glance The electrical switchboard and all its equipment continue to age whether they operate or not This aging process is due mainly to environmental influences and operating conditions To ensure that your Compact NSX circuit breaker retains the operating and safety characteristics specified in the catalog for the whole of its service life it is recommended that e The device is installed in optimum environmental and operating conditions described in the table below e Routine inspections and regular maintenance are carried out by qualified personnel Environmental and Operating Conditions The environmental conditions previously described see Environmental Conditions page 129 refer to harsh operating environments The table below describes the optimum environmental and operating conditions Environmental and operating Comments factor Temperature Average annual temperature outside the switchboard 25 C Loading Loading remains 8096 of In 24 hours a day Harmonics The harmonic current per phase is 3096 of In Humidity The relative humidity is 7096 Corrosive atmosphere SOs The circuit breaker is installed in environmental category 3C1 or 3C2 IEC 60721 NH3 H5S Clo NO 3 3
110. ormation that clarifies or simplifies a procedure The addition of this symbol to a Danger safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death A DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury A WARNING WARNING indicates a potentially hazardous situation which if not avoided can result in death or serious injury h This is the safety alert symbol It is used to alert you to potential A CAUTION CAUTION indicates a potentially hazardous situation which if not avoided can result in minor or moderate injury NOTICE NOTICE is used to address practices not related to physical injury Electrical equipment should be installed operated serviced and maintained only by qualified personnel No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material A qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and its installation and has received safety training to recognize and avoid the hazards involved LV434101 04 2012 LV434101 04 2012 About the Book At a Glance Document Scope Validity Note Rel
111. out the test after preparing the equipment Step Action 1 Switch the circuit breaker to the ON position Inhibiting the thermal memory 2 Press the button for inhibiting the thermal memory 3 The yellow confirmation LED shows a steady light The thermal memory on the trip unit is inhibited for 15 mins Canceling thermal memory inhibition before 15 mins 4 Press the button for inhibiting the thermal memory again 5 The yellow confirmation LED goes out The thermal memory on the trip unit is reactivated Inhibiting the thermal memory also causes the ZSI function to be forced if this option is present on the trip unit This forcing prevents the time delay for short time protection tsd and time delay for ground fault protection tg Micrologic 6 from being taken out of commission during the tests LV434101 04 2012 117 Micrologic Maintenance Interface Maintenance Module Connected to a PC Description and Connection The maintenance module connected to a PC can be used to carry out the complete range of checks tests and settings on the Micrologic trip unit There are two possible ways to connect the PC to the maintenance module e Using the USB port e Using the Bluetooth option Connection via the USB port Micrologic 2900 1 USB standard connection cord from the maintenance module to the PC 2 Maintenance module power supply unit 3 Micrologic cord for connecti
112. ow position on the chassis Push in the circuit breaker until you hear a click from the locking levers Move both locking levers forward as in the disconnection procedure Raise both locking levers at the same time NOTE It is advisable to open the circuit breaker before connecting it If the circuit breaker is in the closed ON position when connecting the pre trip mechanism trips the circuit breaker before the pins are connected Protection of the Chassis Against Direct Contact The chassis can be protected against direct contact by blanking covers Circuit breaker disconnected or removed IP20 base only IP40 base fitted with blanking covers Auxiliary Circuit Test with Circuit Breaker Disconnected The auxiliary circuit test function is possible with devices fitted with manual auxiliary connectors In the disconnected position the device can be operated by the actuator or push to trip button to check whether the auxiliary circuits are working correctly Carriage Switches Optional 2 volt free changeover contacts can be installed on the chassis for more details of contact operation see Control Auxiliaries page 58 1 Connected position carriage switch CE 2 Disconnected position carriage switch CD LV434101 04 2012 45 Mechanical and Electrical Auxiliaries Locking the Chassis The circuit breaker can be locked using up to 3 padlocks not supplied with a shack
113. pplications 65 Fault Currents in Electrical Distribution 66 Protection Against Overcurrents in Electrical Distribution 67 Protection Against Ground Faults 69 Protection for Motor Feeders 70 64 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Applications The Two Main Types of Application Requiring Protection Compact NSX circuit breaker trip units offer protection for all applications due to the great flexibility of their settings Two types of application are generally taken into consideration e Electrical distribution protection e Special protection for receivers motors transformers etc or generators LV434101 04 2012 65 Description of Micrologic Thermal Magnetic and Electronic Trip Units Fault Currents in Electrical Distribution The Four Fault Current Types That Need to be Taken Into Account There are four types of fault current divided into two categories e The overcurrent category e Overload currents e Short circuit currents e The ground fault category e Low intensity ground faults e High intensity ground faults The Overcurrent Category The main characteristics and associated risks are described below e Overload currents These are mainly due to problems with excessive loads on receivers For example operating too many consumers in a workshop at the same time lighting heating power can bring about an electrical distribution overload The mai
114. properly rated voltage sensing device to confirm power is off e Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury If the cover is not put back in place e There is a risk of direct contact with connections e Protection of people against electrical risks due to a ground fault is no longer guaranteed downstream B Inspection of the Switchboard Check that the circuit breakers are installed e Inaclean environment where no waste has been left behind from assembling the equipment wiring tools shavings metallic particles etc e Ina properly ventilated switchboard unobstructed ventilation grilles C Compliance with the Diagram Check that the circuit breakers comply with the installation diagram see dentification of Compact NSX Circuit Breakers page 12 e Identification of the feeds on the front of the circuit breakers e Rating and breaking capacity indications on the rating plate e identification of the trip units type rating e Presence of additional functions Vigi earth leakage protection module motor mechanism rotary handle control or indication auxiliaries locking sealing e Protection settings overload short circuit earth leakage e Thermal magnetic and Micrologic 2 electronic trip unit visually check the position of the switches e Micrologic 5 and 6 electronic trip units visually check the ma
115. put 2 Terminals shown in red O must be connected by the customer 24 445 V DB115711 eps gt 105 Ir DB115712 eps gt 90 Ir Circuit breaker Circuit breaker trip order reset E charge current PAL Ir thermal overload pre alarm SDG ground fault signal SDT thermal fault signal Q circuit breaker 146 LV434101 04 2012 Connection Diagrams SDTAM Module With Micrologic 2 M and 6 E M Trip Unit The diagram is shown with circuits de energised all devices open connected and charged and relays in normal position SD1 SD3 SDTAM module power supply SD2 thermal fault signal output 80 mA max SD4 contactor control output 80 mA max SD2 SD4 Micrologic 2 M SDT KA1 Micrologic 6 E M SDT KA1 Terminals shown in red O must be connected by the customer DB115713 eps DB115714 eps KM1 24 to 415 V Manual _ E p reset order KM1 EE VSE EEE L eee aE SDTAM i H 6 8 yr h Opening 4 08410 i 4 eder E 1 e E Eu Q 2 A dA Kev K 005 14 OFF 15 asss sses ids 9596 To nenne Class tr at 7 2 Ir 9594 T SDT KM1 Contactor closing order 400 ms before circuit breaker tripping order Manual or automatic reset charge current thermal fault signal auxiliary relay e g RBN or RTBT relay motor contactor circuit breaker LV434101 04 2012 147 Connectio
116. quipment must be installed and serviced by qualified electrical personnel e Disconnect all power sources before performing maintenance inspections Assume that all circuits are live until they are completely de energized tested grounded and tagged Consider all sources of power including the possibility of backfeeding and control power e Always use a properly rated voltage sensing device to confirm power is off e Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury Depending on the type of fault maintenance inspections must be carried out on all or part of the equipment where the fault occurred see Startup page 126 e Minor faults e Tripped by long time protection e Tripped by earth leakage protection Following repairs checks D E and F must be carried out e Serious or destructive faults e Tripped due to unknown electrical fault e Tripped by short time protection e Tripped by ground fault protection Following repairs checks A B D E and F must be carried out The circuit breaker that tripped must be specifically checked see Maintaining the Compact NSX During Operation page 131 before being returned to service NOTE Checks tests and inspections must be carried out by qualified personnel If restarting is a high priority for example a safety installation the defective part of the installation must b
117. rations are possible 40 LV434101 04 2012 Equipment Associated With Your Circuit Breaker Aim This chapter describes the electrical accessories and auxiliaries installed on your Compact NSX circuit breaker and or that you can install on site What Is in This Chapter This chapter contains the following topics Topic Page Plug in Base for Compact NSX Circuit Breaker 42 Withdrawable Chassis for Compact NSX 44 Indication Contacts 47 SDx Module Micrologic 2 5 and 6 48 SDTAM Module Micrologic 2 M and 6 E M 50 BSCM Module 52 NSX Cord 55 Isolated NSX Cord 57 Control Auxiliaries 58 Other Accessories 59 Summary Tables of Auxiliaries 60 LV434101 04 2012 41 Mechanical and Electrical Auxiliaries Plug in Base for Compact NSX Circuit Breaker At a Glance Plug in bases can be used with all circuit breaker types including those equipped with a Vigi module e With toggle switch e With rotary handle e With motor mechanism Disconnection Procedure Step Action 1 Switch the circuit breaker to the O OFF position 2 Remove both fixing screws 3 Pull out the circuit breaker keeping it horizontal NOTE e The auxiliary circuits are automatically disconnected because of the connectors located on the base and at the rear of the circuit breaker e ltis advisable to open the circuit breaker before disconnecting it If the circuit br
118. rature refers to the temperature of the air immediately surrounding the Compact NSX circuit breaker Operating temperature e 25 C to 70 C Normal operating temperature e 35 C to 25 C Commissioning possible Storage temperature e 50 C to 85 C Without Micrologic trip unit e 40 C to 85 C With liquid crystal Micrologic trip unit Extreme Atmospheric Conditions Compact NSX circuit breakers are designed to operate in industrial atmospheres as defined in standard IEC 60947 2 for the highest level of pollution level 3 ECTS They are also tested for extreme storage conditions according to the following standards Standard Title IEC 60068 2 2 Dry heat severity level 85 C IEC 60068 2 1 Dry cold severity level 55 C IEC 60068 2 30 Damp heat cyclic temperature 55 C relative humidity 95 IEC 60068 2 52 Salt mist test To get the very best use from the circuit breakers it is advisable to install them in properly ventilated switchboards where excessive dust is not a problem Vibration Compact NSX circuit breakers are protected against mechanical or electromagnetic vibration Conformity tests are carried out in accordance with standard IEC 60068 2 6 at the levels of severity required by the merchant shipping regulatory bodies IACS Veritas Lloyds namely e 2Hzto 13 2 Hz with an amplitude of 1 mm e 13 2 Hz to 100 Hz at a constant acceleration of 0 7 g LV4341
119. resent a danger to people or installations e The starter can operate correctly when parts have been repaired or replaced e In type 2 coordination some slight welding of the contactor or starter contacts is allowed if following type 2 coordination tests e They are easy to separate e The control and protection switchgear functions then work without the need for repair To ensure type 2 coordination standard IEC 60947 4 1 lays down three Id fault current tests intended to check that the equipment behaves correctly in overload and short circuit conditions ty 1 Overload zone Id lt 10 In 2 Impedant short circuit zone 10 In lt Id lt 50 In 3 Short circuit zone Id gt 50 In 70 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Thermal Relay Trip Classes The four thermal relay trip classes are 5 10 20 and 30 values correspond to the maximum relay trip time in seconds at 7 2 In th I I A ji DN a i E Sicher 10 I I I _ li 10 1 T p Class 5 I I I 5 te 1 e NR I I I I I I I l od 105Ir 1 5 Ir 721 Wir Standard trip time values Class 1 05 In 1 2 In 1 5 In 7 2 In 5 t gt 2h t lt 2h t lt 2min 0 5s lt t lt 5s 10 t gt 2h t lt 2h t 4 min 4s lt t lt 10s 20 t gt 2h t lt 2h t lt 8 min 6sxtx20s 30 t gt 2h t lt 2h t lt 12 min 9s lt t lt 30s Classes 5 and 10 are most commonly used Classes 2
120. resetting e Information to assist the operator storage of the last 10 events This module can be used with all Compact NSX circuit breakers equipped with thermal magnetic and Micrologic electronic trip units and with all Compact NSX switches The BSCM module must always be used e With the NSX cord e When the communicating motor mechanism has been installed Description Installation and Connection Installation involves plugging in the module and connecting up the different connectors Compact NSX 100 250 400 630 Green BSCM module Gray NSX cord No Data medium Data transmitted Comments 1 BSCM module micro State of OF and SDE contacts The BSCM takes the place of the auxiliary switches contacts in the OF and SDE slots 2 Connector for the NSX cord Communication bus and state of The NSX cord goes in the SD slot instead SD contact via the micro switch on of the auxiliary contact the NSX cord 3 Connector for the Communication bus Only with Micrologic 5 and 6 trip units Micrologic 5 or 6 trip unit 4 Connector for the Controlling the communicating Use the connector supplied with the communicating motor motor mechanism communicating motor mechanism mechanism Status of the communicating motor mechanism The BSCM module cannot be installed at the same time as an OF c
121. rical Auxiliaries Other Accessories Accessories for Safety and Ease of Operation A comprehensive accessories offer is available for your Compact NSX circuit breaker these can be easily installed on site to improve safety and ease of operation 1 Sealed boot for the toggle switch providing IP43 protection on the front 2 Short or long terminal shields providing IP40 protection 3 Flexible interphase barriers improving isolation between power connections For more details on the accessories offer see the Compact NSX Catalog Terminal Shields with Precut Grids 1 Cutting a grid 2 Adjusting the size of the grid 3 Inserting the grid in the terminal shield Terminal shields with precut grids simplify the onsite connection of circuit breakers regardless of the number of conductors to be connected see nstruction Sheet LV434101 04 2012 59 Mechanical and Electrical Auxiliaries Summary Tables of Auxiliaries Slots for Control and Indication Auxiliaries on Compact NSX 100 250 The table below shows the possible slots for the auxiliary contacts electronic indication modules and control auxiliaries mounted in the case for further details see the Compact NSX Catalog a_i eS A The choice of auxiliaries depends on the functions desired This choice is exclusive only one auxiliary per slot Compact NSX 100 250 Name Slot Comments 1 2 3 4 5 6 Standard remote indication and control auxiliarie
122. rical quantities Kilowatt hour metering Operational assistance peak demand customized alarms operation counters etc Communication ETE SEDE UE ero be Ir tr isd tsd li xIn B 9 0 w a em 18 36 4 40 9 a W qo 3c 45 6 2 vos E 7 Ej o N 1A 2B 3C 2 8 9 osi gt FCO Isd x ir Identification The trip unit installed on the circuit breaker is identified by a combination of 4 characters on the front face Micrologic 6 3 E M XYZ T Protection X Case Y Measurements Z Application T 1 l 2 Compact NSX 100 A Ammeter Distribution if not 2 LSg 160 250 E Energy G Generator 5 LSI 3 Compact NSX 400 AB Subscriber 6 LSIG 630 M Motor Z 16 Hz 2 3 Examples Micrologic 1 3 l 400 or 630 A Distribution Micrologic 2 2 G LSg 100 160 or 250A Generator Micrologic 2 3 LSg 400 or 630 A Distribution Micrologic 2 3 M LSo 400 or 630 A Motor Micrologic 5 2 A LSI 100 160 or 250 A Ammeter Distribution Micrologic 5 3 E LSI 400 or 630 A Energy Distribution Micrologic 6 3 E M LSIG 400 or 630 A Energy Motor I Instantaneous L Long time S o Short time time delay cannot be adjusted S Short time G Ground fault In Rating of Micrologic Trip Units The In rating in amps of a Micrologic trip unit corresponds to the trip unit setting range maximum value The setting range is indicated on the label on the front face of the trip unit this label is visi
123. ries Micrologic maintenance interface LV434101 04 2012 11 Description of the Compact NSX Circuit Breaker Identification of Compact NSX Circuit Breakers Characteristics of the Compact NSX Circuit Breaker Case The case characteristics are indicated on the rating plate on the front of the circuit breakers The rating plate type depends on the breaking performances Schneider Electric 380 415 7 440 500 525 660 690 50 60Hz 25 kA 440 V 36 kA 440 V 50 kA 440 V 70 kA 440 V Ui Insulation voltage Ue Operating voltage o o0o 100mn5C0N 100 kA 440 V 150 kA 440 V Uimp Rated impulse withstand voltage Ics Service breaking capacity Icu Ultimate breaking capacity Circuit breaker disconnector symbol Reference standard IEC 60947 2 Performance according to the NEMA standard 10 Color code indicating the breaking performance Compact 1 NSX100 R 2 3 4 5 6 7 IEC EN 60947 2 8 NEMA AB1 HIC kA 9 Schneider 200 kA 440 V HB1 75 kA 690 V HB2 100 kA 690 V Circuit breaker type Case rating and breaking performance In the case of extended rotary handles the door has to be opened to access the rating plate 12 LV434101 04 2012 Description of the Compact NSX Circuit Breaker Setting the Circuit Breaker Trip Unit The dial positions on the front of the trip unit indicate the circuit breaker pick up settings e TM D Thermal Ma
124. ring operation protection These protections are set on the screen or by using the RSU software see the Micrologic 5 and 6 trip units User manual LV434101 04 2012 105 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 2 G Electronic Trip Unit At a Glance Description The Micrologic 2 G electronic trip unit is used to protect distribution systems powered by generators or distribution systems with long cables The adjustment dials and indications are on the front face 8 Micrologic 2 2 G liz3000A ba 3 5 12 5 2 7 1 xk 140 175 94 T 96 125 200 93 d 110 7225 92 Ms 100 so 9 1 A xlo Ready LED green Overload pre alarm LED orange 90 Ir Overload alarm LED red 105 Ir Test port Preset dial for the long time protection pick up lo Fine tuning dial for the long time protection pick up Ir Adjustment dial for the short time protection pick up Isd Value of instantaneous protection pick up li ONOoahWDND The trip unit rating In corresponds to the maximum value of the setting range Setting the Long Time Protection The long time protection pick up Ir is set using two 9 setting dials e The preset dial allows the pick up to be preset to the value lo displayed in amperes on the dial The maximum preset value maximum setting on preset dial equals the trip unit rating value In e The adjustment dial can be used to fine tune th
125. rry out the test after preparing the equipment Step Action 1 Switch the circuit breaker to the ON position Inhibiting ground fault protection 2 Press the button for inhibiting the ground fault protection 3 The yellow confirmation LEDs for ground fault protection and thermal memory inhibition show a steady light Ground fault protection and the thermal memory on the trip unit are inhibited for 15 min Canceling ground fault protection inhibition before 15 mins 4 Press the button for inhibiting the ground fault protection again 5 The yellow confirmation LEDs for ground fault protection and thermal memory inhibition go out Ground fault protection and the thermal memory on the trip unit are reactivated Inhibiting the ground fault protection also causes the ZSI function to be forced if this option is present on the trip unit This forcing prevents the time delay for short time protection tsd from being taken out of commission during the tests Inhibit Thermal Memory Function Maintenance Level IV The nhibit thermal memory button temporarily cancels the thermal memory This inhibition is necessary in order to obtain a true measurement of the long time protection time delay tr during tripping tests by primary current injection This operation which is maintenance level IV is reserved for a specialist maintenance service see Maintaining the Compact NSX During Operation page 131 Carry
126. rules The circuit breaker can only be locked in the open position if the circuit breaker is in the O OFF position whatever type of control is in use NOTE Locking a Compact NSX circuit breaker in the open position is sufficient to isolate the circuit breaker The locking devices depend on the type of actuator e Forcircuit breakers with toggle switch see How to Lock Your Circuit Breaker page 22 e Forcircuit breakers with rotary handle see How to Lock Your Circuit Breaker With Direct Rotary Handle page 27 and How to Lock Your Circuit Breaker With Extended Rotary Handle page 31 e Forcircuit breakers with motor mechanism see How to Lock Your Circuit Breaker page 40 Maintenance and Servicing Work on the Installation Maintenance and servicing work on an installation requires the installation to be de energized In the event of partial de energization of the installation the installation and safety rules require the feed on which work is to be carried out to be clearly labeled and isolated A amp DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH e Apply appropriate personal protective equipment PPE and follow safe electrical work practices e This equipment must be installed and serviced by qualified electrical personnel e Disconnect all power sources before performing maintenance inspections Assume that all circuits are live until they are completely de energized tested grounded and tagged Consider all sources
127. s OF1 All these auxiliaries can be installed regardless of OF2 a e The trip unit type SD u e The control type toggle switch rotary handle or motor mechanism SDE a SDV E MN MX Specific remote indication Micrologic trip units SDx or SDTAM These auxiliaries are designed for Micrologic trip units 24 V DC power supply terminal block Communication BSCM These auxiliaries send OF SDE BSCM and SD NSX cord data to the NSX cord E communication bus Communication with Modbus communication interface module Micrologic trip unit NSX cord This auxiliary is designed for Micrologic trip units Example The SDx remote indication option cannot be installed at the same time as an MN or MX release and the OF1 contact 60 LV434101 04 2012 Mechanical and Electrical Auxiliaries Slots for Control and Indication Auxiliaries on Compact NSX 400 630 The table below shows the possible slots for the auxiliary contacts electronic indication modules and control auxiliaries mounted in the case for further details see the Compact NSX Catalog Compact NSX 400 630 circuit breakers are exclusively equipped with Micrologic trip units Compact NSX 400 630 Name Slot Comments 1 2 3 4 5 6 7 8 9 Standard remote indication and control auxiliaries OF1 a OF2 All
128. s injection j Wectior 3 lf A Bo a No a c jo iA gt A i R I test Without history impact v Injection duration 2000 ms un manual tes SS ee TRUE Reset thermal memory OK Phases injection 100 0 0 3 13 lr 13 93 Long time 12 324 15 632 E unit ready for Phases injection 200 0 0 6 25 x Ir 0 087 Short time 0 0215 3 6804 test ae e Isd tsd li IN 32 4 1 amp s 1924 00s 600A IN40 A 0800dn amp 6lr amp sr Ftoff 15 xin lsd 240 4 1 Printing data 2 Trip curves The data is saved automatically by the software LV434101 04 2012 123 Micrologic Maintenance Interface 124 LV434101 04 2012 Operating the Compact NSX Aim This chapter sets out the recommendations concerning the startup phase operating conditions and maintenance of Compact NSX circuit breakers Observing these recommendations will ensure a useful service life for the equipment and the installation What Is in This Chapter This chapter contains the following topics Topic Page Startup 126 Environmental Conditions 129 Maintaining the Compact NSX During Operation 131 What to do in the Event of a Trip 133 LV434101 04 2012 125 Operating the Compact NSX Startup List of Checks and Inspections When starting up new equipment or following lengthy downtime a general check takes just a few minutes Such a check will remove all risk of a malfunction due to error or oversight
129. short circuit currents and in certain cases ground fault currents e Pick up adjustments are calculated relative to the downstream circuit to be protected e Time delay adjustments are calculated in relation to the protection management coordination NOTE The protection plan is based on coordination of the protections and in particular on discrimi nation This can be achieved by time delays time related discrimination while complying with ammeter and power related discrimination rules There are two types of trip unit e Thermal magnetic trip units for Compact NSX 100 250 circuit breakers e Micrologic electronic trip units for Compact NSX 100 630 circuit breakers Standard Settings for Overcurrent Protections Standard IEC 60947 2 states the trip characteristics at the circuit breaker limits The table below summarizes the recommendations of standard IEC 60947 2 for the circuit breaker s protection function Long time protection Long time protection of the inverse time type with t constant e No trip for a current below 105 of Ir e Trip in less than two hours for a current equal to e 120 of Ir for an electronic trip unit e 130 of Ir for a thermal magnetic trip unit For a higher fault current the trip time is inversely proportional to the fault current value Short time protection Short time protection is definite time e No trip for a current below 80 of the short time setting e Trip for a current
130. sive presses on the ff button e The modes scroll cyclically e The unlocking locking microswitch is pressed to switch from a read mode to a setting mode and vice versa The Micrologic display unit automatically reverts to a screensaver 5 minutes after the last action on the keypad or dials The screensaver displays the current intensity of the most heavily loaded phase Reading instantaneous measurements mode Micrologic 5 Trip Unit Setting the Protection The summary description below refers to the settings for the Micrologic 5 trip unit LV434101 04 2012 97 Description of Micrologic Thermal Magnetic and Electronic Trip Units Setting the Long Time Protection The long time protection pick up Ir is set using the 9 setting preset dial and the keypad e The preset dial allows the pick up to be preset to the value lo displayed in amperes on the dial The maximum preset value maximum setting on preset dial equals the trip unit rating value In e The pick up Ir is fine tuned via the keypad Step Action 1 Turn the Ir preset dial higher than the value required 2 Access the Ir screen in parameter setting mode padlock open 3 Set Ir to the exact value required in steps of 1 A using the keypad 4 Confirm the setting by pressing the OK button twice The time delay tr is set directly via the keypad Step Action 1 Switch to setting mode padlock open and access the tr
131. sparent protective cover for the trip units Altering any settings and accessing the test port Fixing screw for terminal shields Accessing the power connection protection against direct contact 22 LV434101 04 2012 Description of the Compact NSX Circuit Breaker 1 3 Your Circuit Breaker With Rotary Handle Aim This section introduces the controls indications and locking mechanisms accessible on your Compact NSX circuit breaker What Is in This Section This section contains the following topics Topic Page Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker 24 How to Open Close and Reset Your Circuit Breaker 25 How to Test Your Circuit Breaker With Direct Rotary Handle 26 How to Lock Your Circuit Breaker With Direct Rotary Handle 27 How to Test Your Circuit Breaker With Extended Rotary Handle 30 How to Lock Your Circuit Breaker With Extended Rotary Handle 31 LV434101 04 2012 23 Description of the Compact NSX Circuit Breaker Where to Find the Controls and Locking Mechanisms on Your Circuit Breaker Presentation of the Front Face e The circuit breaker operating controls operation indicators settings and locking mechanisms for the direct rotary handle can be accessed directly on the front of your circuit breaker e In the case of the extended rotary handle e The circuit breaker operating controls can be accessed on the d
132. stems powered by generators There is one version of this trip unit 8P 3D Description The adjustment dial is on the front of the trip unit 50 63A 1 TM 63 G 63A 40 C 1 Setting range for the TM G thermal magnetic trip unit 2 Adjustment dial for the thermal protection pick up Ir Im Setting the Thermal Protection The thermal protection pick up Ir is set by a 4 setting dial Turning the thermal protection adjustment dial 1 modifies the trip curve as shown 2 63 44 57 50 mY l 1 2 The table below shows the values of the pick up Ir in amperes for thermal protection values indicated on the dial with respect to every trip unit rating relative to the position of the dial Ir Trip unit rating In A 16 25 40 63 Pick up Ir A 11 18 28 44 13 20 32 50 14 23 36 57 16 25 40 63 Setting the Magnetic Protection The magnetic protection pick up Im cannot be adjusted and equals the value shown below Trip unit rating In A 16 25 40 63 Pick up Im A 64 80 80 125 The precision range is 20 LV434101 04 2012 79 Description of Micrologic Thermal Magnetic and Electronic Trip Units Example of Application Protection of an incoming feed with the following characteristics e Power supplied by a generator defined by e Generator power 40 kVA 400 V giving an operating current of 58 A e Subtransient reactance 3096 e Ge
133. sting and Setting the Compact NSX Circuit Breaker Checking Settings can be checked without the need for any particular precautions However it is recommended that they be carried out by a qualified person Testing When testing Compact NSX circuit breaker trip mechanisms the necessary precautions must be taken e Notto disrupt operations e Notto trip inappropriate alarms or actions 4 CAUTION RISK OF NUISANCE TRIPPING Only qualified persons are authorized to carry out protection tests Failure to follow these instructions can result in injury or equipment damage For example tripping the circuit breaker via the push to trip button or the LTU test software can lead to fault indications or corrective actions such as switching to a replacement power source if the indications are not dealt with correctly Setting Modifying settings requires a thorough knowledge of the installation characteristics and safety rules CAUTION RISK OF NO TRIPPING OR NUISANCE TRIPPING Only qualified persons are authorized to modify the protection parameters Failure to follow these instructions can result in injury or equipment damage LV434101 04 2012 17 Description of the Compact NSX Circuit Breaker 1 2 Your Manually Operated Circuit Breaker With Toggle Switch Aim This section describes the controls indications and locking mechanisms accessible on the front of your Compact NSX circuit breaker W
134. t UL Listed Im A m 1 MA magnetic trip unit rating 2 Adjustment dial for the magnetic protection pick up Im Setting the Magnetic Protection The magnetic protection pick up Im is set by e A 9 setting dial for 2 5 A to 50 A ratings e A6 setting dial for 100 A to 220 A ratings Turning the magnetic protection adjustment dial 1 modifies the trip curve as shown 2 3080 1980 2860 4 264 22 0 54291 220 Im A Va 1 t lt gt Im 2 The table below shows the values of the pick up Im in amperes for magnetic protection values indicated on the dial with respect to every trip unit rating relative to the position of the dial Im Trip unit rating In A 2 5 6 3 12 5 25 50 100 150 220 Pick up Im A 15 38 75 150 300 18 44 88 175 350 20 50 100 200 400 23 57 113 225 450 900 1350 1980 25 63 125 250 500 1000 1500 2200 28 69 138 275 550 1100 1650 2420 30 76 150 300 600 1200 1800 2640 33 82 163 325 650 1300 1950 2860 35 88 175 350 700 1400 2100 3080 The precision range is 20 LV434101 04 2012 81 Description of Micrologic Thermal Magnetic and Electronic Trip Units Example of Application Protection of a motor feeder with the following characteristics e Power supplied by a 1 250 kVA transformer 400 V 496 e Protection of a motor application defined by e 3 component motor feeder circuit breaker thermal relay
135. t simulation is performed on all the protection types in succession long time short time instantaneous and ground fault protection as applicable 4 The results are displayed in the table of values i Micrologic LTU C MicrologicWtility TU_AWata PRO74533742_Report Itur Eile Remote Functions Setup Liveupdate Help Trip unit on test Distibuion Micrologc52E jP jo A EC P N LV428106 5 mi SEEK Electric He Identification mn Manual TEST El Automatic TEST Oe Alarms Simulation F Miscellaneous Run automatic tests Protections Current levels A Current coefficients Trip time s Status Interval s LI Short time 360 11 3xlr 0 038 0 020 0 080 Instantaneous 750 188xIn 0 034 0 011 0 080 Long time 155 4 84 x Ir 5 564 4 952 6 206 Trip unit ready for test 0 800 In amp Blr B xlr Ft off 15 4n lsd 240 A Ir tr Isd tsd li IN 32 4 16 s 192 4 O 0s 6004 40 122 LV434101 04 2012 Micrologic Maintenance Interface Test Using the LTU Software Manual TEST tab Step Action 1 Run the LTU software A description of the Micrologic variant tested appears under the Trip unit on test tab The setting values appear at the foot of the screen Select the Manual TEST tab Indicate the three fault current values in A in the three Phase injection areas Indicate the duration in ms of the fault current in the Injection duration area 4 Click on Run man
136. te the OSN function which enables the neutral protection to be managed when third harmonic currents and multiples thereof are present For more details see the Micrologic 5 and 6 trip units User manual LV434101 04 2012 99 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 1 3 M Electronic Trip Unit At a Glance The Micrologic 1 3 M electronic trip unit with high short time protection pick up is designed to provide motor feeders with short circuit protection The Micrologic 1 3 M electronic trip unit can be used to create a type 1 ortype 2 coordination motor feeder Description The adjustment dial and indication are on the front face 5 1 160 3204 Micrologic 1 3 M 1i 4800A Micrologic trip unit setting range Adjustment dial for the short time protection pick up Isd Instantaneous protection pick up li Test port Ready LED green c1 0Nuv The trip unit rating In corresponds to the maximum value of the setting range 2 ratings are available 320 A and 500 A Setting the Short Time Protection The short time protection pick up Isd is set by a 9 setting dial Turning the pick up Isd adjustment dial 1 modifies the curves as shown 2 Isd 2880 2560 E 4 3200 2240 J 93520 or ee 19209 M 3840 1600 4160 A The table below shows the values of the pick up Isd in amperes for short time protection values indicated on the d
137. tection The pick up li for instantaneous protection cannot be adjusted The table below shows the value of the pick up li for instantaneous protection in amperes according to the trip unit rating In Trip unit rating In A 40 100 160 250 Pick up li A 600 1500 2400 3000 The precision range is 15 The time delay for instantaneous protection cannot be adjusted e Non trip time 15 ms e Maximum breaking time 50 ms LV434101 04 2012 107 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 2 AB Electronic Trip Unit At a Glance Description The Micrologic 2 AB electronic trip unit is used in public distribution to limit the intensity provided to the subscriber according to the contract signed up for This trip unit only exists in 4 pole versions 4P 3D 4P 3D N 2 and 4P 4D The adjustment dials and indications are on the front face Micrologic 2 2 AB li 2880A r 160 o 180 Jit IUE 440 S240 A ih Selection dial for setting the neutral protection Ready LED green Overload pre alarm LED orange 90 Ir Overload alarm LED red 105 Ir Test port Fine tuning dial for the long time protection pick up Ir Adjustment dial for the short time protection pick up Isd Value of instantaneous protection pick up li ONOOaRWND The trip unit rating In corresponds to the maximum valu
138. ted e Asan option door stays free locking the rotary handle does not stop the door being opened Locking with a Profalux or Ronis Key Optional di 3 The lock is mounted on the case inside the switchboard diagram 3 It is possible to lock in the O OFF position or in both the O OFF and ON positions depending on the bolt chosen The lock can be added On site NOTE The circuit breaker s protection function is not inhibited by locking the rotary handle in the ON position In the event of a fault it trips without affecting its performance When unlocked the toggle switch moves to the Trip position To return the circuit breaker to service follow the resetting instructions see Resetting After a Trip page 25 Keylocking Procedure Keylocking can be performed with a circuit breaker in either the O OFF position or the ON position Step Action circuit breaker in the O OFF Action circuit breaker in the I ON position position 1 Open the door Open the door by disabling the door locking device if necessary 2 Use the keylock mounted on the case inside the Use the keylock mounted on the case inside the switchboard to lock the rotary handle switchboard to lock the rotary handle 3 Close the door Close the door disabling the door locking device if necessary Lead Sealing Accessories The sealing accessories for circuit breakers with extended rotary handles are identical to thos
139. the number of electrical fault trips by the Compact NSX circuit breaker count of SDE Yes contact operations 1 1 The user can modify the content of the counter if for example the BSCM module is replaced or the BSCM module is installed during operation 2 Overshooting the threshold results in a medium priority alarm To acknowledge this fault e Modify the content of the counter e Or modify the value of the threshold In addition to the previous information for Compact NSX circuit breakers equipped with a communicating motor mechanism the BSCM module provides the following information Information Configurable Count of the number of times the communicating motor mechanism opens 1 No Count of the number of times the communicating motor mechanism closes 1 Yes Maximum number of times the communicating motor mechanism closes 2 Yes Count of the number of times the communicating motor mechanism resets 1 Yes 1 The user can modify the content of the counter if for example the BSCM module is replaced or the BSCM module is installed during operation 2 Overshooting the threshold results in a medium priority alarm To acknowledge this fault e Modify the content of the counter e Or modify the value of the threshold LV434101 04 2012 53 Mechanical and Electrical Auxiliaries Configuring the Thresholds In the Breaker I O tab select the Breaking Status amp Control Modu
140. these auxiliaries can be installed regardless of OF3 e The trip unit type OF4 m e The control type toggle switch rotary handle or motor SD H mechanism SDE n SDV a Reserved o MN MX Specific remote indication SDx or SDTAM E mH These auxiliaries are designed for Micrologic trip units 24 V DC power supply terminal block Communication BSCM E mH These auxiliaries send OF SDE BSCM and SD NSX cord data NSX cord WI to the communication bus Communication with Modbus communication interface module Micrologic trip unit NSX cord B This auxiliary is designed for the Micrologic trip unit LV434101 04 2012 61 Mechanical and Electrical Auxiliaries Operation of the Auxiliary Indication Contacts The table below shows the position of the indication contacts or outputs in relation to the position of the actuator and the main contacts Position of the actuator and the main contacts P Tripped ON Tripped by OFF MN MX PT 2 Trip unit 3 L SorSo V G Name Position of indication contacts OF E SD E a SDE SDV SDx outputs 1 SD2 SDT SD4 PAL SDG E SDTAM outputs SD2 Early o make br SD4 eak Contactor control SDT 1 Default SDx output assignment user definable for Micrologic 5 6 trip units with the RSU software PT Push to trip L Long time protection S or So Short
141. time protection Instantaneous protection V Vigi protection G Ground fault protection BS eo oo W Contact closed O Early make output 400 ms NOTE The indication auxiliary changeover contacts are represented in the switchboard by the state of the Normally Open NO contact The state of the NO contact is open e For OF contacts when the circuit breaker is in the O OFF position e For SD SDE and SDV contacts when the associated function is not active Sequence chart of the OF contacts relative to the main contacts A Main contacts B Position of OF changeover contacts 62 LV434101 04 2012 Description of Trip Units Aim This chapter describes the adjustment metering indication and communication functions of the Micrologic thermal magnetic and electronic trip units in the Compact NSX range What Is in This Chapter This chapter contains the following sections Section Topic Page 3 1 Fault Currents and Trip Units 64 3 2 TM D TM G Thermal Magnetic and MA Magnetic Trip Units 73 3 3 Micrologic Electronic Trip Units 86 LV434101 04 2012 63 Description of Micrologic Thermal Magnetic and Electronic Trip Units 3 1 Fault Currents and Trip Units Aim This section describes the main definitions and characteristics of fault currents What Is in This Section This section contains the following topics Topic Page A
142. tion Ir Class 455 Y0 10 185 sae ft 1209 210 E J 100 220 5 20 A e The long time protection pick up Ir is set by the 9 setting dial The maximum setting value maximum setting on adjustment dial equals the trip unit rating value In The table below shows the values of the pick up Ir in amperes for long time protection that are displayed directly on the dial with respect to every trip unit rating Trip unit rating In A 25 50 100 150 220 320 500 Pick up Ir A 12 25 50 70 100 160 250 14 30 60 80 120 180 280 16 32 70 90 140 200 320 18 36 75 100 155 220 350 20 40 80 110 170 240 380 22 42 85 120 185 260 400 23 45 90 130 200 280 440 24 47 95 140 210 300 470 25 50 100 150 220 320 500 e Thelong time protection time delay class is set by the 3 setting dial the choice of class is 5 10 and 20 The table below shows the value of the trip time delay depending on the current in the load for all 3 classes Current in the load Class 5 10 20 Trip time delay tr in seconds 1 5 Ir 120 240 400 6 Ir 6 5 13 5 26 7 2 Ir 5 10 20 The precision range is 20 096 Setting the Short Time Protection The pick up for short time protection is set by a 9 setting dial It is displayed in multiples of Ir Step Action 1 Set the long time protection first the setting pick up is Ir A 2 Turn the Isd adjust
143. tor into the test port on the Micrologic trip unit Inspection and Checking Check and inspect the trip unit after preparing the equipment Step Action Inspection 1 Check that the green Ready LED is blinking This means that all the Micrologic functions are in a satisfactory operational state internal self test Checking the settings 2 Run the RSU software e An active screen showing the front of the Micrologic variant tested appears under the Basic prot tab E Service Basic prot IH Alarms SBE Outputs f Breaker 1 0 RA interface Fd Passwords Ir tr isd tsd li IN 40A 0500s 60A 00s 604 OFF 1 xin 6h 1 5 lr R off 1 5sln Yv Access to settings and navigation between screens are identical to those used for Micrologic see the Micrologic 5 and 6 trip units User manual Scroll down and check the values of the different settings Micrologic 5 trip unit Ir A IN A if present long time tr s Isd A IN A if present short time tsd ms with without It li A The settings can be modified The settings can be modified the padlock must be unlocked Tests Using the Maintenance Module When connected to a PC the maintenance module can operate in standalone mode all three test functions are accessible see Standalone Maintenance Module page 115 Saving and Printing The different settings and data can be saved and printed 120
144. trip unit rated 40 A e Above 30 A on Micrologic trip units rated gt 40 A This limit value is indicated above the Ready LED on the front face of the Micrologic trip unit To activate the Ready LED when the load current is below the limit value you can e Install a 24 V DC external power supply module see the Compact NSX Catalog which allows the trip unit to be monitored continuously even when the circuit breaker is open e Or during maintenance visits connect the pocket battery module see Pocket Battery Module page 113 which can be used to monitor the trip unit NOTE If the pre alarm and alarm LEDs keep lighting up it is advisable to carry out load shedding in order to avoid tripping due to a circuit breaker overload Micrologic trip units feature a test port specifically for maintenance actions see Maintenance Interface for Micrologic Trip Units page 111 This port is designed for e Connecting a pocket battery module for local Micrologic testing e Connecting the maintenance configuration module for testing setting the Micrologic trip unit and or for installation diagnostics 90 LV434101 04 2012 Description of Micrologic Thermal Magnetic and Electronic Trip Units Upgradability of Micrologic Trip Units Onsite swapping of trip units is simple and reliable e Noconnections to make e No special tools e g calibrated torque wrench e Compatibility of trip units ensured by mechanical cap e Torque limited scre
145. ual test The simulation shows the type of trip e g long time or NON trip 5 The results are displayed in the table of values fa Micrologic LTU C MicrologicWtility _ TU_A Wata PRO74533742_Report ltur Eile Remote functions Setup Live update Help Trip unit on test Tm mp p pum Distibuion Micrologc52E P 40 A EC P N LV428106 M eo FE Identification n Manual TEST JE Automatic TEST Ce Alarms Simulation Miscellaneous Phases injection Ground injection lA fo A IB 0 A MW I o a Puls R test Without history impact v Injection duration 2000 ms ii un manual tes Currents 4 Interval s PEL 1 regee Reset thermal memory Phases injection 100 0 0 3 13 xr 13 93 Long time 12 324 15 632 Trip unit ready for Phases injection 200 0 0 5 25 x Ir 0 087 Short time 0 0215 3 6804 is dr Isd tsd li IN 16 192 4 00s 600A 140 4 0800n 6lr Ssi Ftoff 1 amp xn lsd 240 A Saving and Printing Settings and data can be saved and printed The software also provides an option to examine a trace of the trip curve calculated by the trip unit being tested i Micrologic LTU C MicrologicWtility TU_A Wata PRO 74533742 Report Itur 1 Remote functions Setup Live update Help erint report xz A 2 edegcS2E jP 40 a EC pan OG B m Schneider HiDisplay curves x iectric Quit Identification Manual TEST Fa Automatic TEST T Alarms Simulation Miscellaneous Phase
146. ult simulation pick up and time delay measurement etc NOTE Access for the purpose of modifying the Micrologic trip unit settings via communication is protected by user passwords The factory set administrator password is 0000 To check whether to use a password contact the authorized maintenance administrators 118 LV434101 04 2012 Micrologic Maintenance Interface Maintenance Module Connected to a PC With RSU Software At a Glance The RSU Remote Setting Utility software is a Micrologic utility designed to help the operator e To check and or configure e Protection parameters Measurement parameters Alarm parameters Assignment of the SDx module outputs BSCM module parameters Communication interface module parameters To modify passwords To save these configurations To edit configurations To display trip curves Description The protection measurement alarm and communication functions of the Micrologic trip unit can be programmed or checked FH Micrologic RSU C Micrologic Wtility RSU_AWata New rsa File Remote functions Setup Live update Help 1 Schneider d Electric Micrologic selection Trip unit Distribution Miciologic5 2E t jjEc x P N LV428106 JA Service B Basic prot E Alarms EE Outputs Ef Breaker 170 E Interface Bi Paseworde B 2 2 tr dsd tsd lii N VA 28 3C amp DO e O Ir tr Isd tsd li IN 32
147. ults e Repair the faulty equipment e Isolate the equipment with excessive natural leakage current e Orraise the earth leakage Vigi module protection setting observing the safety rules Micrologic 5 and 6 Indication Probable cause Checks or repairs SD SDE TriP screen then StoP Ir tr led tsd li xin N WA ZB sc Operating temperature too high Checkthe switchboard ventilation and or the temperature in the room Malfunction Circuit Breaker Fails to Close The table below shows the checks and or repairs that have to be carried out in relation to the probable causes of the malfunction indicated All trip unit types Indication Probable cause Checks or repairs Manually operated circuit breaker SD MX shunt release energized Check that the release connection is MN undervoltage release not energized correct compared to the installation diagram OF Circuit breaker interlocked Check the installation and interlock diagram mechanical or electrical for both circuit breakers Circuit breaker with motor mechanism OF Close instruction not operational Check the Auto position of the selector on the front of the circuit breaker Also check e The power supply to the motor mechanism the motor voltage e The voltage at the motor terminals on the motor mechanism e The close command path LV434101 04 2012 135 Operating the Compact
148. unicating motor mechanism MTc amp terae Meme UR Fs Wei MC i sidor S rS s 38U Gory B GO gt emot tmo nm wj x IE Fichier Edition Affichage Favoris Outils 7 DB114670 eps __ ed e RSU utility setup screen for the communicating Enable motor mechanism e ireset e UA even if 1SDE cococcocoogo Y 2 Open i Close command command i Enable automatic Reset command preset Close motor Single line diagram of communicating motor mechanism Opening closing and reset orders are transmitted via the communication network The Enable automatic reset and Enable reset even if SDE parameters must be set using the RSU software via the screen by clicking the blue text Auto manu is a switch on the front of the motor mechanism Symbols Q circuit breaker B4 A1 motor mechanism power supply BSCM breaker status and control module Terminals shown in red O must be connected by the customer LV434101 04 2012 145 Connection Diagrams SDx Module With Micrologic 2 5 and 6 Trip Unit The diagram is shown with circuits de energised all devices open connected and charged and relays in normal position SD1 SD3 SDx module power supply SD2 output 1 80 mA max SD4 output 2 80 mA max SD2 SD4 Micrologic2 SDT Micrologic 5 SDT oroutput1 PAL Ir or output 2 Micrologic6 SDT oroutput1 SDG or out
149. utomatic resetting after tripping by the MN MX release or push to trip button e Clicking on the 2 blue switches Enable Reset even if SDE and Enable Automatic Reset both blue switches close authorizes automatic resetting even after an electrical fault trip CAUTION HAZARD OF EQUIPMENT DAMAGE Wire the motor mechanism in the circuit in strict accordance with the connection diagram Improper wiring of the motor mechanism can result in repeated closing of the circuit breaker on an electrical fault Failure to follow these instructions can result in injury or equipment damage 54 LV434101 04 2012 Mechanical and Electrical Auxiliaries NSX Cord At a Glance Description Installation The NSX cord connects a Compact NSX circuit breaker to the communication bus The NSX cord can be used e On its own for communicating measurements and settings only with Micrologic 5 and 6 trip units e Or with a BSCM module e Forcommunicating measurements and settings only with Micrologic 5 and 6 trip units e For communicating states with all types of trip unit For more details on integrating Compact NSX communication functions see the ULP system User manual and the Modbus User manual The NSX cord consists of a junction box a cable equipped with an RJ45 connector and a cable equipped with a screw terminal block Graphic No Data medium Data transmitted Comments 1 NSX cord micro switch State of SD c
150. va NO vd LY HO vv c T P Q 1 2 c a is a E I 1H o B5 B z GZ MEL o o vv eg B Uis mx XE ARCA ded YZ NO vz cn i E E mo E eB m OU zh C ze 0 i xd Tez S O4Z Upstream CB Downstream com ooo cea oeo CO CXII NSX cord sde zzovad LV434101 04 2012 The diagram is shown with circuits de energised all devices open connected and charged and relays in normal position 142 Connection Diagrams DB125921 eps Q9 Open Q Closed GOraut GOraut 9 Closed Kopen Q Fault Connected amp amp Disconnected es ASN S 2S 2S os Nis l Fog I I Fg Fg i i I Z o fw w w zo zo l l w i le SIS EIS SIS oje x 1 i gt 5 als ols fale la fe o wx 3 amp i8 3 lax Zs UD d st st e ce NIN x pem eo 3 Oo e Le o NJN M 100 100 00 Q 09 Q Oo Q O Q 0O O O gt a jw gt gt ra E o E od Be a E E ju CAF1 m SDV fa I gt x S o 4 o lt e N eo o e N o K i x gt gt gt x x gt en o o o en en o l l l l l MEC I ii i T D a 0 a 0 D L2 amp i 5 K A
151. w ensures proper mounting see drawing below The design of the trip units limits the risk of incorrect tightening or oversights The simplicity of the swapping process means it is easy to make the necessary adjustments as operation and maintenance processes evolve NOTE When the trip unit has been mounted by this means the trip unit can still be removed the screw head is accessible NOTE On the Compact NSX with R HB1 and HB2 breaking performances the trip units are not upgradable Sealing the Protection The transparent cover on Micrologic trip units can be sealed to prevent modification of the protection settings and access to the test port On Micrologic 5 and 6 trip units it is possible to use the keypad with the cover sealed to read the protection settings and measurements LV434101 04 2012 91 Description of Micrologic Thermal Magnetic and Electronic Trip Units Micrologic 2 Electronic Trip Unit At a Glance Description The Micrologic 2 electronic trip unit is designed to protect conductors in commercial and industrial electrical distribution This trip unit exists in three versions 3P 3D 4P 3D and 4P 4D The adjustment dials and indications are on the front face e Micrologic 2 3 3P version Ew 160 400A Micrologic 2 3 Micrologic 2 3 1i 4800A 10 Micrologic 2 electronic trip unit setting range Adjustment dial for the long time protection pi
152. wnstream electrical equipment CAUTION RISK OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and if necessary repairing the downstream electrical equipment Failure to follow these instructions can result in injury or equipment damage The table below describes the procedure to be followed after a fault trip Step Action Toggle switch position 1 Isolate the feed see Maintenance and Servicing Work on the Installation Y page 16 before inspecting the downstream electrical equipment 2 Look for the cause of the fault v 3 Inspect and if necessary repair the downstream equipment v 4 Inspect the equipment retightening of connections etc in the event of a short Vv circuit trip 5 Reset the circuit breaker by moving the toggle switch from the Trip position to the O OFF O OFF position the circuit breaker is open 6 Reclose the circuit breaker by moving the toggle switch from the O OFF position ON to the ON position the circuit breaker is closed Circuit breaker trip Resetting the circuit breaker Reclosing the circuit breaker 20 LV434101 04 2012 Description of the Compact NSX Circuit Breaker How to Test Your Circuit Breaker Press the push to trip Button The push to trip button checks whether the trip mechanism is working correctly The table below descri

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