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Micrologic Control units

1. y t Yo X Y v2 sin not n nz1 where m Yo is the value of the DC component generally equal to zero and considered as such hereinafter m Ynisthe rms value of the nth harmonic m oisthe angular frequency of the fundamental m onis the phase displacement of the harmonic component at t 0 A harmonic of order n referred to as the nth harmonic is the sinusoidal component of a signal with a frequency that is n times higher than the fundamental frequency For example the current and voltage waveforms distributed on the European electrical power grid have the following characteristics m the fundamental frequency is 50 hertz Hz m the 2nd harmonic has a frequency of 100 Hz m the 3rd harmonic has a frequency of 150 Hz m the 4th harmonic has a frequency of 200 Hz A distorted waveform is the result of superimposing the various harmonics on the fundamental The figure opposite shows a current distorted by harmonics Schneider 33 Electric DB120068 Ii Overview of functions Harmonic measurements Origin and effects Standby generator set Power factor correction Origin of harmonics Harmonics are caused by non linear loads Aload is said to be non linear when the current that it draws does not have the same waveform as the voltage Typical examples of non linear loads are those using power electronics Such loads are increasingly numerous and their share in overall electric
2. e e instarftaneous e o9 GO Micrologic 7 0 H control unit long time L earth leakage N AX 80 E60236A E60238A Micrologic 6 0 control unit long time E60240A 8 alarm amp 7 9 94 12 6 95 2 16 5 9i 20 sm Sog xad short time 6 L ground fault Schneider 5 Electric Discovering Micrologic H Dials m Dials are used to set Micrologic H protection thresholds and tripping delays for overloads short circuits ground faults and earth leakage m f the set thresholds are overrun these protection functions systematically trip the circuit breaker Buttons m Buttons on the keypad are used for fine adjustments ofthe protection thresholds and tripping delays for overloads short circuits ground faults and earth leakage The value previously set using a dial automatically becomes the maximum value for the keypad settings m They may also be used to activate other factory disabled protection functions available on Micrologic H These other protection functions are not accessible via the dials With the protective cover open make all the necessary settings for your control unit All fine adjustments are permanently stored in memo
3. demand demand demand Calculation method block interval Window type sliding Interval Select Calculation method block interval Window type sliding Interval Adjust Calculation method block interval Window type sliding Interval Confirm Select the calculation method for demand power a Power Power Power Power demand demand demand demand The synchronisation function Synchro Com is available only with the COM communication option With this function the demand power is determined on the basis of a signal synchronised by the communication module Thermal method based on l t calculation Sliding window power demand is refreshed every 15 secondes Fixed window power demand is refreshed at the end of the time interval 56 Schneider Electric Calculation method Window type sliding Interval 15 min Select Power Power Power demand demand demand Calculation Calculation Calculation method method method block block block interval interval interval Window type Window type Window type Interval Interval Interval 15 min 15 min 15 min o me Select Choose between fixed or Confirm Calculation method block interval Window type sliding Interval 15 min Choose between m thermal m block interval m sync to comms sliding Calculation method interval Window type sliding Interval 15 min Con
4. 04443728AA 01 2009 71699 E71700B E71703A Energy measurements Measure the energy values E kWh E total Ein E out Reset energy then Select E total E P KWh 20168 E Q kvarh 2733 E S kVAh 22926 View the total energy values E71701B Select the energy value to be measured m total energy m energy in positive component in the total energy m energy out negative component in the total energy E71702B E in kWh 21320 E P E Q kvarh 2770 View the energy in values View the energy out values Reset the energy values E kWh E total E in E out Reset Energy BB BB Select E71704A E71705A To reset energy press enter Pi Select yes or no If yes confirm Schneider 75 Electric Metering Select the command Harmonic Waveform 76 Schneider Electric Harmonic measurements Waveform capture Waveform capture for currents 11 12 and I3 Waveform 1 2 3 7 IN E89262B E89263A U12 23 31 2 aD then o Select View Waveform capture for neutral current IN E89264B E89265A Waveform 112 3 In U12 23 31 o then Select View Waveform capture for voltages U12 U23 and U31 E89266B E89267A Waveform 1 2 3 IN U12 23 31 then Select View 04443728AA 01 2009 Metering
5. Type Range Factory setting Step Accuracy Pickup threshold 5 to 60 60 1 10 0 Dropout threshold 5 of pickup threshold pickup threshold 1 10 96 0 Pickup time delay 1sto40s 40s 1s 20 96 0 Dropout time delay 10sto360s 10s 1s 20 96 0 Pickup threshold 20Ato 1200A 120A 1A 15 Dropout threshold 20 Ato pickup threshold pickup threshold 1A 15 Pickup time delay 1510105 105 0 15 20 0 Dropout time delay 1sto10s 1s 0 1s 20 96 0 Pickup threshold 0 5Ato 30A 30A 0 1A 20 0 Dropout threshold 0 5 Ato pickup threshold pickup threshold 0 1A 20 96 0 Pickup time delay 1sto10s 10s 0 1s 20 96 0 Dropout time delay 1sto10s 1s 0 1s 20 96 0 Pickup threshold 0 2 In to In In 1A 6 6 Dropout threshold 0 2 In to pickup threshold pickup threshold 1A 6 6 Pickup time delay 15sto 1500s 1500 s 1s 20 0 Dropout time delay 15sto 3000 s 15s 15 20 96 0 Voltage protection Type Range Factory setting Step Accuracy Pickup threshold 100 V to U max pickup threshold 100 V 5V 5 96 0 96 Dropout threshold pickup threshold to U max pickup threshold 5V 5 96 0 96 pickup threshold Pickup time delay 1 2sto5s 5s 0 1s 0 20 Dropout time delay 1 2sto36s 1 28 0 1s 0 96 20 Maximum voltage Umax Pickup threshold U min pickup threshold to 1200 V 725 V 5V 0 96 5 96 Dropout threshold 100 V to pickup threshold pickup threshold 5V 0 96 5 96 Pickup time delay 1 2sto
6. 1000 2000 A li 2 x 2000 4000 A setting In 2000 A See pages 22 and 24 for selection of the setting Set the time delays ranges e 8 long time tr 1 S tsd 0 2 s short time 34 tsd Thresholds Time delays curve It OFF curve 14 curve 12 OFF curve gta Ir ath Ir ata ath tr tr Isd Isd tsd tsd li li 0 o 0 i o Ir LT threshold tr LT tripping delay Isd ST pickup tsd ST tripping delay li Instantaneous pickup Electric 8 Schneider 04443728AA 01 2009 DB119918 Discovering Micrologic H Consider a 2000 A circuit breaker In 2000 A See pages 22 to 26 for selection of the setting ranges DB119924 DB119925 Setting Micrologic 6 0 H using the dials Setthe thresholds long time In 2000 A 78 0 6 95 fe Q Ir 0 5 x 2000 1000 A Isd 2 1000 2000 A short time 1 instantaneous S 1 1 8 6 8 10 2 5 6 4 2 2 S 3 Pod RS li 2 x 2000 4000 A setting gt B lg 640 A F eG ground fault Set the time delays long time tr 1 s pir 16 1 20 Sacr short time tsd 0 2 S T e ground fault Thresholds Time delays curve 124 OFF cu
7. Reset cancel the reset m Measure the demand currents E71678A E71679A Demand Max o then Select View Schneider Electric 69 Metering Schneider Electric E71680A E71682A Current measurements m Check the demand current maximeter Demand 11 12 13 IN Max then Select m Reset the maximeter Imax Demand 15min OA OA OA E Reset Reset the maximeter or E71681A E71683A Imax Demand 15min 4020A l 2 4450A l 4300 A In 600A Reset View Imax Demand 15min 4020 A 4450 A 4300 A 600 A Reset cancel the reset 04443728AA 01 2009 Metering Select the command U The phase to neutral voltages are displayed if the selected system type is 3 phase 4 wire see page 55 04443728AA 01 2009 Voltage measurements Measure an instantaneous voltage value U or V UV E89257B E60193A Average 3o Unbal Phase rotation o0 then Select View Measure the average voltage U avg U V Uavg Instant Average 402 V Unbal 3 Phase rotation E89258B E71687A then Select View Measure the voltage unbalance U unbal U V i Uunbal 3o Average 19 E89259B Instant Phase rotation BD then Select View Schneider 71 Electric Metering Voltage me
8. BD Enter the year Setthe time in the same manner Circuit breaker selection Select the command Micrologic Breaker Breaker Breaker setup selection selection selection nn Standard Standard Standard m IEC The circuit breaker code is required to identify the Circuit breaker Circuit breaker Circuit breaker device and activate the contact wear counter Masterpact Masterpact Masterpact Note this code if the control unit must be changed type type type example 03E7 NTO8N NT H1 NT H1 03E7 Logicooxxx BD Select the standard 03E7 Logicxxxxxx BD Choose and confirm Logicxxxxxx BD Select the circuit breaker Enter this code when setting up a new control unit on the circuit breaker For a new device the code is set to zero When the main circuit breaker contacts are replaced this code must be reset to zero 04443728AA 01 2009 E71618C Breaker selection Standard IEC Circuit breaker Compact NS type 630b 03E7 Logicxxxxxx BD Choose and confirm E71619C Breaker selection Standard IEC Circuit breaker Compact NS type 630b 03E7 Logicxxxxxx BD Select the type E71620BC Breaker selection Standard IEC Circuit breaker Compact NS type 03E7 Logicxxxxxx Bn Choose and confirm Scbneider Electric 53 Setup Select the command Micro
9. DB119961 DB119962 Schneider Electric 87 Maintenance Tests Test the ground fault Micrologic 6 0 H and earth leakage Micrologic 7 0 H protection functions The circuit breaker must be supplied with power and closed for the test Press the TEST button The circuit breaker should trip DB120037 Ifthe circuit breaker does not trip contact the after sales support department Refer to the manual that comes with the test kits Mini test kit and portable test kit The test connector is used to connect the mini or the portable test kitto check that the control unit is operating correctly DB120038 DB120039 88 Schneider 04443728AA 01 2009 Electric 04443728AA 01 2009 Schneider Technical appendix Tripping curves Long time I t short time and instantaneous protection Micrologic 5 0 H 6 0 H 7 0 H 10 000 i 5 000 Ir 0 4 1 x In DB120005 2 000 1 000 500 200 T x li t s 1 5 10xIr 02 i 2 15xIn OFF 002 001 5x1 2 345 7 10 20 8 5 7 10 20 30 aX Ir lt x In Long time Idmtl short time and instantaneous protection Micrologic 5 0 H 6 0 H 7 0 H 100 000 DB119967 10 5 000 2 000 1000 500 t s 200 90 Schneider 04443728AA 01 2009 Electric Technical app
10. DB119998 Measurements Current and voltage Instantaneous current Micrologic H control units offer two non exclusive measurement possibilities m On the bargraph display on the main screen The instantaneous current of the most heavily loaded phase is automatically displayed in amperes for phases 1 2 3 and the neutral depending on the neutral protection settings The bargraph indicates the percent load of the three phases m in the inst section of the instantaneous currents display in amperes of the instantaneous currents rms on phases 11 I2 and I3 and the neutral current IN the ground fault current Ig Micrologic 6 0 H the arth leakage current IAn Micrologic 7 0 H the maximum instantaneous currents are displayed and stored in memory the stored maximums can be reset at any time Demand current m Display of the demand current on phases 11 12 I3 and the neutral IN depending on the type of distribution system m Selection of the demand calculation method m Display of the interval over which the value is calculated m The maximum demand values are displayed and stored in memory m The stored maximums can be reset at any time Note the calculation method the type of calculation window fixed or sliding and its duration may be set in the Metering setup menu under History maintenance and setup Phase to neutral and phase to phase voltages Micrologic H offers different voltage m
11. functions using the keypad E89295B E89293B Umax V Do you want to set the protection to Trip mode o0 then Confirm For protection tripped by a maximum value the dropout m Setthe pickup and dropout thresholds and time delays threshold is always less than or equal to the pickup Umax V Umax V E71665A E71666A E71667A threshold Umax V For protection tripped by a minimum value the dropout threshold is always greater than or equal to the pickup Alarm Alarm Alarm threshold Pick up Pick up Pick up If both the minimum and maximum protection values are activated the minimum threshold is automatically 690V 690V 690V limited to the value of the maximum and vice versa 5 00s 5 00s 5 00s Drop out 0 50s aD then lal Select the existing Adjust Confirm dropout threshold setting Drop out 685V 0 505 Drop out 0 505 When all the settings have been made quit the screen by pressing one of the menu access buttons U max V This saves the new values E71668A E71657A Umax V Alarm Alarm Pick up Pick up Do you want to save new 690V 690V settings 5 005 5 005 Drop out Drop out 685V 685V Bn Setthe other parameters Quit the setting screen Confirm 04443728AA 01 2009 Schneider 65 Protection settings Setting load shedding reconnection Select the command Load Load shedding type of shedding I or P shedding operating mode On
12. Select the command Harmonic Fundament 04443728AA 01 2009 Harmonic measurements Fundamentals Measure the fundamental currents KA Fundament E89268B E89269B Fundament 92A 126 A 62A 1A then Select View Measure the fundamental voltages U V Fundament E89270B E89271B Fundament 281 V 333 V 276 V 139 V 185 V 190 V BD then Select View Measure the fundamental power values E89272B E89273B P Q S Fundament P KW 9 Q kvar Fundament 47 kVA 52 then Select View Schneider Electric 77 Metering Select the command Harmonic THD 78 Schneider Electric Harmonic measurements THD Measure the total harmonic distortion THD of the current with respect to fundamental ITHD 7 0 96 E89274A E89275B 5 8 6 2 2 1 ag then e Select View Measure the total harmonic distortion THD of the voltage with respect to fundamental UTHD 1 0 1 2 1 4 2 2 96 E89276A E89277B 2 0 2 0 aD then Select View 04443728AA 01 2009 Metering Select the command Harmonic thd 04443728AA 01 2009 Harmonic measurements thd Measure the total harmonic distortion thd of the current with respect to rms value Ithd 96 6 8 96 7 2 96 E89278A E89279B 5 6 8 1 Un Select View
13. access to the frequency measurement F Hz ectric 17 71711 E71713A Discovering Micrologic H History maintenance and setup n button to select the History maintenance and setup menu A a move the cursor down the screen or decrement a value Press the Q move the cursor up the screen or increment a value select an option in a list confirm a selection or the value of a setting indicates that the operator is in the History maintenance and setup menu n and returns to the previous screen return to the main screen D N Event Event history ven access to the following sections history Event histor Contacts y M2C M6C Trip The last ten faults recorded Micrologic history setup Metern Alarm The last ten alarms recorded setup 9 history Com Operation Number of operations opening or closing setup counter Contact Wear ofthe circuit breaker main contacts wear M2C M6C Contacts access to the following sections Event Contacts e history M2C M6C Contacts Assi i gnment of a protection alarm to an M2C or an M2C M6C gt M6C contact Micrologic setup Latching mode for each M2C or M6C contact Metering Setup setup Reset ofthe M2C or M6C contacts Com Reset setup Electric 18 Schneider 04443728AA 01 2009 Discovering Micrologic H History maintenance and setup Micrologic setup E71714A E71715A
14. contact latching contact BB E MED Select a contact Select a latching mode Confirm m non latching m latching m time delay m locked to 1 m locked to 0 50 Schneider 04443728AA 01 2009 Setup Setting up the optional M2C M6C contacts m Setthe time delay for time delay latching S2 S2 Mode Mode E71605A E71606A E71607A S2 Mode time delay time delay time delay Delay Delay Delay BB aD e Select the time delay Adjust Confirm Select the command Reset the contacts to 0 M2C M6C i M2C M6C M2C M6C Contacts 8 Reset S1 0 SL 52 0 S2 1 o then Reset the contacts to O or cancel the reset then confirm Reset 04443728AA 01 2009 Schneider 51 Electric Setup Select the command Micrologic setup Language Select the command Micrologic setup Date time If the time is set via a communications module any previous manual setting is automatically erased 52 Schneider Electric E71608A E71610B Setting up the Micrologic control unit Prior to setting up the protection functions or carrying out measurements the following operations are required m selection of the display language m entry ofthe date and time m entry ofthe circuit breaker type m entry the power sign m selection of the transformation ratio between the primary and secondary windings if an auxiliary vol
15. individual distortion level for harmonic orders from 3 to 31 for each current 11 I2 I3 and IN each phase to phase voltage U12 U23 and U31 m The Micrologic H control unit also indicates for each current or voltage the corresponding level of total harmonic distortion THD thd for Neutral current 42 Schneider 04443728AA 01 2009 Overview of functions The communication module may be used to m set up Measurement or Protection alarms m capture and analyse waveforms capture may be tripped by the alarms m captured waveforms are recorded over 4 cycles resolution of 64 points per cycle 04443728AA 01 2009 Harmonic measurements Waveform and waveform capture Micrologic H control units can capture and store current and voltage waveforms using digital sampling techniques similar to those used in oscilloscopes Waveform capture is the means to detect weak points in the system and the equipment Using the information available in the captured waveform it is possible to determine the level of harmonics as well as the direction and amplitude of the flow of harmonic power m Users of Micrologic H control units can record manually via the keypad the following waveforms the four currents 11 I2 I3 and IN the three phase to neutral voltages V1N V2N and V3N m Waveforms may be displayed on the graphic screen of Micrologic H control units The recording takes place over one cycle with a measurement r
16. lAn pickup 26 Pt 22 60 Idmtl 23 61 Ig pickup 26 li pickup 24 Infrared link 5 Instantaneous current 68 Instantaneous protection 24 Ir current setting 22 23 Isd pickup 24 108 Schneider 04443728AA 01 2009 Index 04443728AA 01 2009 K K factor L Language Latching Lead seal for cover LEDs Load shedding reconnection Long time I2t protection Long time Idmtl protection Long time plug M M2C M6C Main screen Maximum demand current Maximum demand power Maximum instantaneous current Metering menu ModBus N Negatively incremented energy Neutral CT Neutral protection Neutral protection setting No neutral protection Operation counter Oversized neutral protection P Parity Phase rotation Phase sequence Phase to neutral and phase to phase voltage Portable test kit Positively incremented energy Power demand calculation Power factor Power sign Power supply Protection menu R Remote control Remote settings Resetting the alarms and fault indications Resetting the contacts Resetting the energy values Resetting the maximum demand current values Resetting the maximum demand power values Resetting the maximum instantaneous current values Resetting the operation counter RMS current rms voltage rP max S Self protection Setting dials Short time protection Sign convention SIT System frequency System type 41 32 75 23 25 25 63 25 63 29 31 64 31 71
17. value that expresses the distortion of the current flowing at a given point in a distribution system m Micrologic H control units measure the THD for currents 11 I2 I3 and IN in amperes taking into account harmonic orders up to 31 m The total harmonic distortion of current characterises the distortion of the current waveform m Loads causing distortion are identified by measuring the THD I on the incoming and outgoing circuits m THD lI values measured and the corresponding phenomena in an installation THD I under 10 is considered normal There is no particular risk of malfunctions THD I between 10 and 50 signals a significant level of harmonic disturbance There is a risk of temperature rise which means that cables and sources must be oversized THD I greater than 50 signals major harmonic distortion Malfunctions are probable An in depth analysis and the installation of compensation equipment is required 04443728AA 01 2009 Schneider 37 Electric Overview of functions Harmonic measurements Quality indicators Total harmonic distortion of voltage THD U The total harmonic distortion of voltage is the ratio ofthe square root ofthe sum of the squares ofthe harmonic voltages from the 2nd to an infinite order to the fundamental voltage 0 2 DIE THD U V Ufund Note Ufund is the fundamental voltage Distortion is expressed as a percentage and may exceed 100 Defined by sta
18. voltage measurement inputs are still energised it is impossible to reset and close the circuit breaker 04443728AA 01 2009 DB119949 Other protection Reverse power min frequency max frequency phase rotation Operating principle protection tripped protection tripped by a minimum value by a maximum value th Sth 1 te 3 3 1 4 4 4 2 0 F min 0 F max rP max 1 pickup threshold 2 pickup time delay 3 dropout threshold 4 dropout time delay m For protection tripped by a minimum or maximum value it is possible to set a pickup threshold 1 that activates an alarm a contact and or tripping a pickup time delay 2 that steps in when the pickup threshold 1 is reached a dropout threshold 3 corresponding to deactivation of the alarm and or contact a dropout time delay 4 that steps in when the dropout threshold 3 is reached m For protection tripped by a minimum value the dropout threshold is always greater than or equal to the pickup threshold m For protection tripped by a maximum value the dropout threshold is always less than or equal to the pickup threshold m If both the minimum and maximum protection functions are activated at the same time the minimum threshold is automatically limited to the value of the maximum and vice versa Reverse power protection rP max m This function calculates the value of the total active power on the three phases m The function is ac
19. 15 OFF In circuit breaker rating m Circuit breakers have two types of instantaneous protection adjustable instantaneous protection li self protection Depending on the circuit breaker the OFF position corresponds to the self protection pickup 24 Schneider 04443728AA 01 2009 Electric Overview of functions Current protection Neutral protection For the default values the setting ranges increment Th ree pole circuit breakers steps and setting accuracies see the technical Protection of the neutral is possible on a three pole circuit breaker by connecting an appendix external sensor Settings are made using the EE B buttons on the control unit Micrologic control unit 5 0 H 6 0 H and 7 0 H Setting OFF N 2 N 1 6xN Type of neutral Description No neutral protection The distribution system does not require protection of the neutral conductor Half neutral protection The cross sectional area of the neutral conductor is half that of the phase conductors m The long time current setting Ir for the neutral is equal to half the setting value m The short time pickup Isd for the neutral is equal to half the setting value m The instantaneous pickup li for the neutral is equal to the setting value m For ground fault protection Micrologic 6 0 P pickup Ig for the neutral is equal to the setting value Full neutral protection The cross sectional area of the neutral conductor is equal to that of the phase
20. 32 75 32 56 13 20 45 50 29 64 Schneider 109 Electric Index T Tab 7 Temperature 22 48 98 Test connector 5 88 tg tripping delay 26 THD 37 78 thd 39 79 Thermal memory 22 98 trtripping delay 22 23 Transformation ratio 54 Trip 44 Trip history 46 85 Tripping curves 90 tsd tripping delay 24 U U max 28 U min 28 92 U unbal 28 71 92 V VIT 23 61 Voltage U avg 28 31 Waveform 43 Waveform capture 43 76 2 Zone selective interlocking 94 110 Schneider 04443728AA 01 2009 Electric 04443728AA 01 2009 Notes Schneider Electric 111 Schneider Electric Notes 04443728AA 01 2009 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 04443728AA 04 As standards specifications and designs change from time to time please ask for confirmation of the information given in this publication amp S This document has been printed on ecological paper Design Schneider Electric Photos Schneider Electric Printed 01 2009 2009 Schneider Electric Tous droits r serv s
21. 96 50 96 1 30 on dial 0 2 s 2 30 up to 1 55 Load shedding and reconnection Type Range Factory setting Step Accuracy Pickup threshold 50 to 100 Ir 100 Ir 196 6 96 Dropout threshold 30 Ir to shedding threshold shedding threshold 196 6 96 Pickup time delay 20 96 to 80 tr 80 tr 196 20 0 96 Dropout time delay 105106005 105 15 20 0 Pickup threshold 200 kW to 10 000 kW 10 000 kw 50 kW 2 5 Dropout threshold 100 kW to shedding threshold shedding threshold 50 kW 2 5 Pickup time delay 10 sto 3600 s 3600 s 10s 20 0 Dropout time delay 10 s to 3600 s 10s 10s 20 0 wo 04443728AA 01 2009 Schneider 10 Technical appendix 104 Schneider Electric Other settings M2C M6C contacts Type Range Factory setting Step Time delay 1 360s 360s 15 latching time delay Micrologic setup Type Range Factory setting Step Language German English UK English US English UK Italian French Spanish Chinese Date time 1s Circuit breaker no def selection Neutral TC noTC VT ratio Primary voltage min 100 V max 1150 V 690 V 1V Secondary voltage min 100 V max 690 V 690V 1V System 50 60 Hz 50 60 Hz frequency or 400 Hz Measurement setup Type Range Factory setting Step System type 3 CT 4w 4 CT 30 4w 3CT 30 4w 4CT Demand current Calculation method thermal or block interval block
22. a menu button is pressed a presentation screen Metering History maintenance and setup is displayed and the green LED on the button goes ON i i and Protection menus m Metering menu press the or button to return to the main screen E71931B press the button to return to the previous Screen whatever the screen displayed if no further action is taken the system returns to the main screen after a few minutes the LED goes OFF on exiting the menu U P E H armoniq 12 Schneider 04443728AA 01 2009 Discovering Micrologic H 04443728AA 01 2009 Main menus m History maintenance and setup menu press the or button to return to the main Event screen S history o press the Ya button to return to the previous b 71711 Contacts screen M2C M6C whatever the screen displayed if no further action is taken the system returns to the main screen after a Micrologic few minutes setup the LED goes OFF on exiting the menu Metering setup Com setup m Protection menu o press the or button to return to the main Current Screen rotection P press the button to return to the previous 0 Voltage screen protection whatever the screen displayed if no further action is taken the system returns to the main screen after a Other few minutes protection o the LED goes OFF on exiting the menu E71712A Load sheddi
23. and protection Systems 04443728AA 01 2009 Schneider 93 Electric E60450B Technical appendix Zone selective interlocking ZSI Operating principle m Afault occurs at point A Downstream device no 2 clears the fault and sends a signal to upstream device no 1 which maintains the short time tripping delay tsd or the ground fault tripping delay tg to which it is set Upstream device no 1 detects the fault In the absence of a signal from a l m Afault occurs at point B downstream device the set time delay is not taken into account and the device trips Caution If the protection function is not used on circuit breakers equipped for ZSI protection a jumper must be installed to short terminals Z3 Z4 and Z5 If the jumper is not installed the short time and ground fault tripping B according to the zero setting If itis connected to a device further upstream it sends 4 a signal to that device which delays tripping according to its tsd or tg setting Note on device no 1 the tsd and tg tripping delays must not be set to zero because this would make discrimination impossible 4 Connections between control units Alogic signal 0 or 5 volts can be used for zone selective interlocking between the upstream and downstream circuit breakers m Micrologic 5 0 A 6 0 A 7 0A m Micrologic 5 0 P 6 0 P 7 0 P m Micrologic 5 0 H 6 0 H 7 0 H An interface is available for connectio
24. and the cos Crest factor The crest factor is the relation between the peak value of the current or voltage and the corresponding rms value Upeak or crest factor Irms Urms Crest factor Note m Irms is the rms current m Urms is the rms voltage m Possible values for a sinusoidal signal the crest factor is equal to V2 for a non sinusoidal signal the crest factor may be less than or greater than V2 m The crest factor is used to characterise the capacity of a source UPS or generator to supply high instantaneous currents In particular it draws attention to the presence of exceptional peak values with respect to the rms value Computer equipment for example draws highly distorted current with a crest factor that can reach 3 or even 5 m Typical crest factors for the currents drawn by non linear loads are much higher than V2 They are often equal to 1 5 or 2 and can reach 5 in critical cases m A very high crest factor means that there can be high temporary overcurrents which when detected by the protective devices may result in nuisance tripping Schneider 41 Electric Overview of functions Harmonic measurements Quality indicators The communication module can be used to determine FFT am plitude spectrum of odd harmonic for each harmonic order up to 31 m the amplitude spectrum orders from 3 up to 31 m the displacement spectrum with respect to the phase Each type of disto
25. not require protection of the neutral Half neutral protection The cross sectional area of the neutral conductor is half that of the phase conductors m The long time current setting Ir for the neutral is equal to half the setting value m The short time pickup Isd for the neutral is equal to half the setting value m The instantaneous pickup li for the neutral is equal to the setting value Full neutral protection The cross sectional area of the neutral conductor is equal to that of the phase conductors m The long time current setting Ir for the neutral is equal to the setting value m The short time pickup Isd for the neutral is equal to the setting value m The instantaneous pickup li for the neutral is equal to the setting value 04443728AA 01 2009 Schneider 25 Overview of functions Current protection Ground fault and earth leakage protection For the default values the setting ranges increment Ground fault protection on Micrologic 6 0 H steps and setting accuracies see the technical m An ground fault in the protection conductors can provoke local temperature rise at appendix the site of the fault or in the conductors The purpose of the ground fault protection function is to eliminate this type of fault m There are two types of ground fault protection Type Description Residual m The function determines the zero phase sequence current i e the vector sum of the phase and neutral currents depending on the type of install
26. the ground fault and earth leakage protection m does not affect the fine adjustments made using the keypad for the overload long time and short circuit short time and instantaneous protection m does not affect any other settings made using the keypad 04443728AA 01 2009 Discovering Micrologic H With the protective cover closed it is not possible to set the protection functions However it is possible to set metering functions and alarms as well as view all measurements settings and histories 04443728AA 01 2009 DB119916 DB119917 Setting procedure View the settings and measurements m Close the protective cover for the dials m Access to the dials is blocked and it is no longer possible to make fine adjustments using the keypad E60254B m f necessary install a lead seal to protect the settings m Settings may be viewed at any time using the keypad Caution If you notice that the tab on the back of the protective cover has been broken off contact the Schneider Electric after sales support department to replace the cover Schneider Electric Discovering Micrologic H Consider a 2000 A circuit breaker DB119918 DB119919 Setting Micrologic 5 0 H using the dials Set the thresholds long time x Ir EE Ir 0 5 x 2000 1000 A In 2000 A Isd 2
27. unbalance protection unbal lunba 96 Setting of the maximum current protection 11 max 1 max A Setting of the maximum current protection 12 max Setting of the maximum current protection 13 max Setting of the maximum current protection IN max Electric 20 Schneider 04443728AA 01 2009 Discovering Micrologic H Protection Voltage protection E71719A E71720A E71721A 71722 cin Voltage e access to the following sections Voi protection otage protection U V Setting of the minimum voltage protection U min Other min protection Setting ofthe maximum voltage protection U Load Umax V shedding Setting of the voltage unbalance protection U unbal Load U 9 0 shedding P unbal Other protection urrent access to the following sections protection Other protection Voltage W Setting of the reverse power protection rP max Other protection Emin Hz Setting of the minimum frequency protection F min Load min 2 shedding Setting of the maximum frequency protection F max Load F H Z shedding P max Phase Setting of the phase rotation protection C rotation urrent protection Load shedding depending on current protection Load Access to load shedding and reconnection shedding depending on current Other protection Load shedding Load
28. 1 Defined by standard IEC 61000 2 2 total harmonic distortion thd l is a single value that expresses the distortion of the current flowing at a given point in a distribution System Total harmonic distortion of voltage thd U The total harmonic distortion of voltage is the ratio of the square root of the sum of the squares of the harmonic voltages from the 2nd to an infinite order to the rms voltage 2 ZU thd U N Urms Note Urms is the rms voltage m Micrologic H control units measure the thd U for phase to neutral voltages V1N V2N V N in volts phase to phase voltages U12 U23 U31 in volts taking into account harmonic orders up to H31 Schneider 39 Electric Overview of functions Harmonic measurements Quality indicators Cos o Cos ois the ratio between the active power Pfund and the apparent power Sfund of the fundamental 1 Note m Pfund is the active power of the fundamental m Sfund is the apparent power of the fundamental Cos q pertains exclusively to the fundamental frequency Consequently if there are harmonics the value of the cos is not the same as that of the power factor Power factor PF The power factor is the ratio between the active power P and the apparent power S Note m Pisthe active power m Sisthe apparent power m the power factor must not be confused with the cos The power factor is equal to the cos only when the signal is perfectly sinusoida
29. 4443728AA 01 2009 67 Metering Current measurements Only the measurements for the phase 1 2 3 and Continuous current measurement neutral currents are displayed on the main screen The bargraph displays the value in amperes of the most heavily loaded phase The neutral current is displayed if the neutral CT is set to internal or external see Ineutral A settings in the Current protection menu E60184A E60185A E60187A The o and o buttons may be used to display the currents on the three phases If the operator no longer uses the buttons for a few seconds the bargraph returns to the display of the most heavily loaded phase Select the command Measure an instantaneous current value AGBS m Measure the instantaneous currents A pu Inst Instant I1 12 13 IN Max E60188A E60189A o0 then Select View m Check the instantaneous current maximeter Imax Instant 5600 A 4800 A 4700 A 800A 28A E60190A E60191A inst 11 12 13 IN Max Reset MD then Select View 68 Schneider 04443728AA 01 2009 Electric Metering Select the command A Demand 04443728AA 01 2009 Current measurements m Reset the maximeter Imax instant E60192A E60191A 0A 0A 0A IN 0A 14 0A Reset Reset the maximeter or Measure a demand current value Imax instant 5600 A 4800 A 4700 A IN 800 A 12 28
30. 5s 5s 0 1s 0 96 20 Dropout time delay 1 2sto36s 1 28 0 1s 0 96 20 VoltageunbalanceUunbal Pickup threshold 2 to 30 96 30 1 20 96 0 Dropout threshold 2 to pickup threshold pickup threshold 1 20 0 Pickup time delay 1sto40s 40s 1s 20 96 0 Dropout time delay 10 sto 360s 10s 1s 20 0 102 Schneider 04443728AA 01 2009 Technical appendix Threshold and time delay settings Other protection Type Range Factory setting Step Accuracy Pickup threshold 5 to 500 kW 500 kW 5kW 2 5 Dropout threshold 5 kW to pickup threshold pickup threshold 5kW 2 5 Pickup time delay 0 2sto20s 20s 0 1s 0 96 20 Dropout time delay 1sto360s 1s 0 1s 0 96 20 96 Pickup threshold F min pickup threshold to 440 Hz 65Hz 0 5Hz 10 5 Hz Dropout threshold 45 Hz to pickup threshold pickup threshold 0 5Hz 0 5 Hz Pickup time delay 1 2sto5s 5s 0 1s 0 96 20 96 2 Dropout time delay 1 2sto36s 1 2s 0 1s 0 96 20 2 Pickup threshold 45 Hz to F max pickup threshold 45Hz 0 5Hz 0 5 Hz Dropout threshold pickup threshold to F max pickup threshold 0 5Hz 0 5 Hz pickup threshold Pickup time delay 1 2sto5s 5s 0 1s 0 96 20 96 9 Dropout time delay 1 2sto36s 1 2s 0 1s 0 96 20 Pickup threshold Ph1 Ph2 Ph3 or Ph1 Ph3 Ph2 Ph1 Ph2 Ph3 none none Dropout threshold pickup threshold pickup threshold none none Pickup time delay 0 3s 0 3s none 0 96 50 96 Dropout time delay 0 3s 0 38 none 0
31. 60449A E60448A E60447A Power supply AD power supply module The AD power supply module provides auxiliary 24 V DC power for the control unit functions listed below m graphic display device OFF or not supplied the long time short time instantaneous and ground fault protection functions operate under all circumstances on their own power m activation of an M2C programmable contact The AD power supply module is required to assign an M2C programmable contact to an alarm The AD power supply module can supply the following voltages m 110VAC m 220VAC m 380VAC m 24 30V DC m 48 60V DC m 125 V DC Battery module Use of a BAT battery module mounted in series with the AD power supply module ensures a continous supply of 24 V DC power for 12 hours if the AD module fails Wiring diagrams reliable or backed up auxiliary system Schneider Electric 95 Technical appendix Power supply Using the AD power supply module The 24 V DC external power supply AD module is required for certain operating configurations as indicated in the table below m yes means the power supply is required m no means itis not required Circuit breaker Closed Open Open M2C M6C programmable contacts option yes yes yes Display function no no yes Time stamping function no no no Circuit breaker status indications and control via no no no communications bus Identification setting
32. 8 12 16 20 24 trat 7 2xlr 0 to 20 0 7 0 81 1 63 3 26 6 52 9 8 13 1 16 34 19 61 trat 10x Ir 0 to 20 0 7 2 0 75 1 14 2 28 4 57 6 86 9 13 11 42 13 70 Time delay s trat 1 5 x Ir 0 to 30 12 5 25 50 100 200 300 400 500 600 trat6 x Ir 0 to 20 0 700 1 2 4 8 12 16 20 24 trat 7 2 x Ir 0 to 20 0 7 02 0 69 1 38 27 5 5 8 3 11 13 8 16 6 trat 10x Ir 0 to 20 0 7 2 0 7 0 70 1 41 2 82 4 24 5 45 7 06 8 48 Time delay s trat 1 5 x Ir 0 to 30 164 5 329 658 1316 2632 3950 5265 6581 7900 trat6 x Ir 0 to 20 0 79 1 2 4 8 12 16 20 24 trat7 2xIr 0 to 20 0 72 0 7 1 107 1 42 3 85 5 78 9 64 11 57 trat 10x Ir 0 to 20 0 72 0 72 0 7 0 7 1 02 1 53 2 04 2 56 3 07 In circuit breaker rating 1 0to 40 2 0 to 60 m These curves with different slopes are used to improve o discrimination with fuses positioned upstream HV and or downstream D protection for certain types of loads W Five types of curves are available DT definite time curve o SIT standard inverse time curve 19 5 VIT very inverse time curve It o EIT extremely inverse time curve I t HVF compatible with high voltage fuses I t m Neutral protection Overload protection long time for the neutral is disabled if the Idmtl protection function is selected However the short circuit protection short time and instantaneous remains operational m intermittent overloads As long as the Micrologic H control unit remains supplied with power th
33. E71716A zum Micrologic access to the following sections setup Contacts M2C MeC Selection of the display language Language Micrologic guag setu p 7 Setting of the date and time Metering Date time setup Com Breaker Indication of the circuit breaker type setup selection Power Setting the power sign sign Select of the primary and secondary voltages on the VT ratio instrument transformer System Indication of the rated system frequency frequency EE Metering setup ven access to the following sections history Metering setu Contacts M2C M6C Svstem 3 phases 3 wires 3 CTs method using two Mi loai t wattmeters UE ogic ype m 3 phases 4 wires 3 CTs method using three setup wattmeters m 3 phases 4 wires 4 CTs method using three Metering wattmeters with measurement of the neutral current setup Com Current setup demand mei Ulak Power Selection ofthe calculation method and setting ofthe parameters for the calculation demand Sian Setting ofthe sign convention for the power factor and reactive power i e i alternate or g t d i i e IEEE IEEE al IEC convention see page 106 to determine the sign convention COM communications option setup Event history Com access to the following sections setup Contacts M2C M6C Com Setting of parameters for the COM communications option add
34. HVF short time pickup Isd short time tripping delay tsd instantaneous pickup li E71718A E60278A E60151A lami A Change I A settings with Idmtl A Ban gg Select yes Select a setting Change the setting E60279A E60280A E71657A Do you want to save new settings Bun Confirm Adjust the other settings Confirm 04443728AA 01 2009 Schneider 61 Protection settings Fine adjustment of the ground fault and earth leakage protection setting using the keypad Select the command Current protection 124 08120019 08120020 IZA Trip 1200A threshold 1200A time delay then Select a setting DB120021 DB120022 DB120023 IZA Trip A Trip 80 Adjust the value Confirm Go to the next setting When all the settings have been adjusted quit the screen by pressing one of the menu access buttons This saves the new values DB120024 DB120025 DB120025 Bo Adjust the value Confirm Quit the setting screen 62 Schneider 04443728AA 01 2009 Protection settings Select the command Current protection A neutral Caution Selection of the CT type determines the Ineutral protection in the Protection menu m none disables the neutral protection m Internal for a four pole circuit breaker provides access to the N 2 N and OFF protection functions m Exter
35. Low voltage electrical distribution Micrologic Control units 5 0 H 6 0 H and 7 0 H User manual 01 2009 Schneider Micrologic control units 5 0 H 6 0 H and 7 0 H 04443728AA 01 2009 Contents Discovering Micrologic H Identification Presentation Setting procedure Setting Micrologic 5 0 H using the dials Setting Micrologic 6 0 H using the dials Setting Micrologic 7 0 H using the dials Selecting the type of neutral protection Main menus Metering History maintenance and setup Protection Overview of functions Current protection Voltage protection Other protection Load shedding and reconnection Measurements Harmonic measurements Alarms Optional M2C and M6C contacts Event histories LEDs and display screens COM communications option Setup Setting up the optional M2C M6C contacts Setting up the Micrologic control unit Setting up the metering functions Setting up the COM communications option Protection settings Fine adjustment of the long time I t short time and instantaneous settings using the keypad Fine adjustment of the long time Idmtl short time and instantaneous settings using the keypad Fine adjustment of the ground fault and earth leakage protection setting using the keypad Setting the neutral protection Setting the unbal Imax U min U max U unbal rP max F min F max and phase rotation protection functions using the keypad Setting load shedding reconnection M
36. Measure the total harmonic distortion thd of the voltage with respect to rms value Uthd 96 U12 10 U23 12 18 ViN 20 V2N 28 89280 89281 26 then Select View Schneider 79 Electric Metering Harmonic measurements FFT amplitude spectrum Select the command Measure the amplitude 5f is cuim Harmonic harmonics E89282A E89283A E89284B FFT Note FFT Fast Fourier Transform BB e BB e Select Select a current View the individual distortion of the 3rd harmonic E89285B E89286B 23 25 27 29 View the 5th harmonic and the other odd harmonics up to the 31st 80 Schneider 04443728AA 01 2009 Electric Metering Harmonic measurements FFT amplitude spectrum Measure the amplitude spectrum of the voltage harmonics E89287A E89288A E89289B U12 FFT THD 3 2 FFT U12 3 31 U23 3 31 U31 48 291 BD BD e Select Select a voltage View the individual distortion of the 3rd harmonic E89290B E89291B U12 FFT THD 3 2 U12 FFT THD 3 2 I PE 3 5 7 9 11 23 25 27 29 81 View the 5th harmonic and the other odd harmonics up to the 31st 04443728AA 01 2009 Schneider 81 Electric Metering Select the command 82 F Hz ectric F H2 Frequency measurements 04443728AA 01 2009 04443728AA 01 2009 Schneider M
37. Off Load shedding Pick up pickup threshold pickup time delay Drop out dropout threshold dropout time delay 66 Schneider 04443728AA 01 2009 Electric Protection settings Setting load shedding reconnection Example Take load shedding reconnection depending on power Load Load P Load shedding shedding shedding Pick up Pick up E71670A E71671A E71672A Pick up 1000kW 1000kW 1000kW 3600s Drop out 1000kW 10s 3600s Drop out 1000kW 10s 3600s Drop out 1000kW 10s BD Select the first setting Confirm Select m Off load shedding disabled m On load shedding enabled Load shedding On Pick up Load shedding On Pick up E71674A E71676A Load shedding On Pick up E71675A P P P 1000kW 3600s Drop out 980kW 10s 1000kW 3600s Drop out 985kW 10s 1000kW 3600s Drop out 985kW 10s Confirm Adjust aD then Select the existing dropout threshold When all the settings have been made quit the screen by pressing one of the menu access buttons This saves the new values Load shedding On Pick up 1000kW Load shedding On Pick up 1000kW E71677A E71677A E71657A P P Do you want to save new settings 3600s 3600s Drop out 985kW o0 then Setthe other parameters Drop out 985kW Quit the setting screen Confim Scbneider Electric 0
38. act is forced to 0 for an automation test m Other protection F min m Contact operating diagram for long time protection 4 i Ir threshold j tr delay T2 1 sec di Ir LED internal alarm mm iNon latching contact Time delay Reset possible before contact delay 1 to 360 s end of delay iLatching f Reset possible contact SS only after T2 2 1 s m Contact operating diagram for short time instantaneous and ground fault protection A li or lg pickup l tsd or tg delay li or Ig LED Press Internal alarm iNon latching contact Time delay i Reset possible before contact delay 1 to 360 s i end of delay iLatching i Reset possible contact SE only after pressing m Contact operating diagram for the other protection functions A Pickup Dropout E gt Internal alarm Eee Non latching contact Hu Time delay Reset possible before 1 contact delay 1 to 360s H end of delay Latching Reset possible contact only after T2 Schneider 45 Electric Overview of functions Event histories The interrupted currents are indicated in terms of their Trip history peak values m The trip history is the means to d
39. aintenance Caution Ifthe circuit breaker remains closed and the Ap LED remains ON after the reset open the circuit breaker and contact the after sales support department 84 Schneider Electric E89292B Resetting fault indications The fault indication is maintained until it is reset on the control panel Press the reset button Micrologic 7 0 H lAn test 04443728AA 01 2009 Maintenance Select the command Event history Trip history Select the command Event history Alarm history 04443728AA 01 2009 E71706A E71708A Viewing the event histories Trip history Trip history U min 27 01 1999 Ir 27 06 1998 Ir 18 02 1998 oo then Select a fault Alarm history Alarm history 12 max 27 01 1999 In max 23 03 1998 U max 12 02 1998 aD then e Select an alarm E71707A Trip 22 11 1999 02 04 04 Umin 160V View Alarm 27 01 1999 13 06 09 E71709A 12 max 3400A View Schneider Electric 85 Maintenance Operation counter and contact wear indicator Select the command View and or reset the operation counter Event amp history s Number of amp Number of 5 Number of operations operations operations Operation counter Total Total Total 17824 Operations since last reset 6923 Reset 17824 Operati
40. akage 0t030A 1 5 11 12 I3 0 05 x In to 20 x In 1 5 IN max 0 05 x In to 20 x In 1 5 max ground 0 05 x In to In 10 max earth leakage 0to30A 1 5 Demandcurent 0000000000000 11 12 13 0 05 x In to 20 x In 1 5 IN 0 05 x In to 20 x In 1 5 IT max 2 max I3 max 0 05 x In to 20 x In 41 5 IN max 0 05 x In to 20 x In 1 5 96 Phase to phase voltages U12 170 to 1150 V 0 5 023 170 to 1150 V 40 5 u34 170 to 1150 V 0 5 Phaseto meutralvoltages VIN 100 to 1150 V 0 5 96 V2N 100 to 1150 V 0 5 V3N 100 to 1150 V 0 5 96 U avg 170to 1150 V 0 5 U unbal O to 100 96 0 5 96 P 0 015 to 184 MW 2 Q 0 015 to 184 Mvar 2 S 0 015 to 184 MVA 2 1t0 1 2 P 0 015 to 184 MW 2 Q 0 015 to 184 Mvar 2 S 0 015 to 184 MVA 2 P max 0 015 to 184 MW 2 Q max 0 015 to 184 Mvar 2 Smax 0 015 to 184 MVA 2 E P 101 GWh to 10 GWh 2 E Q 101 Gvarh to 101 Gvarh 2 E S 101 GVAh to 10 GVAh 2 E P 101 GWh to 10 GWh 2 E Q 10 Gvarh to 10 Gvarh 2 96 EP 10 GWh to 101 GWh 2 E Q 10 Gvarh to 10 Gvarh 2 96 F 45 Hz to 440 Hz 0 1 I 0 005x Into 1 5x In 1 5 96 0 U 30 to 1150 V 0 5 5 0 15 to 13 8 kW 2 96 l 2 to 1000 5 U 2 to 1000 5 0 to 1000 5 U to 1000 5 1 Over the range 0 7 x Into 1 5 Schneider 10 Technical appendix Po
41. al appendix Thermal memory Thermal memory The thermal memory is the means to take into account temperature rise and cooling caused by changes in the flow of current in the conductors These changes may be caused by m repetitive motor starting m loads fluctuating near the long time protection settings m repeated circuit breaker closing on a fault Control units with a thermal memory record the temperature rise caused by each overload even very short ones This information stored in the thermal memory reduces the tripping time Micrologic control units and thermal memory All Micrologic control units are equipped as standard with a thermal memory m For all protection functions prior to tripping the temperature rise and cooling time constants are equal and depend depend on the tr tripping delay ifthe tripping delay is short the time constant is low ifthe tripping delay is long the time constant is high m For long time protection following tripping the cooling curve is simulated by the control unit Closing of the circuit breaker prior to the end of the time constant approximately 15 minutes reduces the tripping time indicated in the tripping curves Short time protection and intermittent faults For the short time protection function intermittent currents that do no provoke tripping are stored in the Micrologic H memory This information is equivalent to the long time thermal memory and reduces the tripping delay for
42. al consumption is growing HV LV A Examples m industrial equipment including welding machines arc furnaces induction voltage furnaces rectifiers etc E ro ET eere m variable speed drives for asynchronous or DC motors System and other users do not cause m office equipment including computers photocopy machines fax machines etc m household equipment including televisions microwave ovens neon lighting UPSs etc Non linear phenomena may also be caused by the saturation of transformers and other equipment Effects of harmonics The flow of harmonics in distribution systems can cause serious problems m increased currents flowing in the system and overloads m additional losses and premature ageing of equipment m disturbances to loads due to voltage harmonics m disturbances in communication networks The above effects can also have major financial impact due to m the cost of equipment premature replacement oversizing m increased power losses and the need to subscribe to higher power levels m losses in productivity unnecessary tripping of protection devices 34 Scbneider d Electric 04443728AA 01 2009 Overview of functions Harmonic measurements Origin and effects What is an acceptable level of harmonics The presence of harmonics in a distribution system should be assessed as a preventive measure to gain information on the system and detect any drift m asa corrective measure t
43. ange of 0 to 1 5 In for current and 0 to 690 volts for voltage The resolution is 64 points per cycle Schneider 43 Electric DB120000 DB120001 Overview of functions Alarms For information on the communications option and the m An alarm may be viewed using portable test kit see the respective user guides the Alarm history menu the COM communications option the portable test kit m The commands in the Protection menu are used to attribute a specific operating mode to each of the protection functions OFF protection disabled Alarm the function issues an alarm but does not trip the circuit breaker o Trip Alarm the function issues an alarm and trips the circuit breaker m The protection functions against overloads long time short circuits short time and instantaneous and ground faults ground fault and earth leakage currents automatically result in tripping and cannot be deactivated Trip mode only m The Alarm and phase rotation alarms can be set exclusively to OFF or Alarm mode m The other protection functions for current voltage power and frequency may be setto any of the three modes OFF Alarm or Trip Alarm m The load shedding and reconnection function may be set to ON or OFF m The resettable alarms linked to device tripping are activated when the Ir Isd li or thresholds are overrun The Ir alarm is reset one second after tripping The Isd li and alarms are reset by pressing the bu
44. arth leakage protection Y version number Identification of the control unit generation 0 signifies the first generation Z type of measurement m Afor ammeter m P for power meter m Hfor harmonic meter m no indication no measurements 4 Schneider Electric E71927A E71928A E71929A Identification Micrologic 5 0 H Selective protection Idmtl power measurements and additional protection econo Sth 08119 Isd li i Selective protection Idmtl Micrologic 6 0 H Selective protection Idmtl ground fault protection power measurements and additional protection gu zu 1 13 E a a 2 ton Isd li i 0 Wg Selective protection Ground fault protection Idmtl Micrologic 7 0 H Selective protection Idmtl earth leakage protection power measurements and additional protection Micrologie 0H Sth 2 t JARRA 0 ir li 0 IAn i Selective protection Earth leakage protection Idmtl 04443728AA 01 2009 Discovering Micrologic H top fastener terminal block for external connections housing for battery screw for long time rating plug long time rating plug cover opening point protective cover lead seal fixture for protective cover infrared link with communications int
45. asurements Determine the phase sequence Phase rotation E89260A E89261A U V Instant Average Unbal 3 Phase rotation aD then o Select View 72 Schneider 04443728AA 01 2009 Metering Select the command P kW Instant To ensure reliable power and power factor measurements the Power sign and Sign convention parameters must be set Select the command P kw Demand 04443728AA 01 2009 Power measurements Measure an instantaneous power value E71690A E60199B then e Select View Measure the power factor Power factor E71691A 71692 1 00 BD then o Select View Measure a demand power value m Display the demand power E71693A E71694B then Select View Schneider 73 Electric Metering Schneider Electric Power measurements m Check the demand power maximeter E71695A then Select m Resetthe maximeter Pmax Demand kW E71697B KVA 0 Reset Reset the maximeter or E71696B Pmax Demand kW 2450 kvar 800 KVA 2700 Reset View E71698B Pmax Demand kW 2450 kvar 800 KVA 2700 Reset cancel the reset 04443728AA 01 2009 Metering Select the command E kWh To ensure reliable energy measurements the Power sign and Sign convention parameters must be set
46. ation Source Ground Return m Using a special external sensor this function directly measures the fault current returning to the transformer via the earth cable m It detects faults both upstream and downstream of the circuit breaker m The maximum distance between the sensor and the circuit breaker is ten metres m Ground fault and neutral protection are independent and can therefore be combined Ground fault pickup Ig and tripping delay tg The pickup and tripping delay values can be set independently and are identical for both the residual and source ground return ground fault protection functions Micrologic control unit 6 0 H Pickup 19 In accuracy 10 B C D E F G H J In 400A 0 3 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 400A lt In lt 1200A 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 gt 1200 500 640 720 800A 880 A 960A 1040A 1120A 1200A Time delay ms settings It Off It Off 0 0 1 0 2 0 3 0 4 at In or 1200A lt On 0 1 0 2 0 3 0 4 It On or tg max resettable time 20 80 140 230 350 12t Off tg max break time 80 140 200 320 500 In circuit breaker rating Earth leakage protection on sur Micrologic 7 0 H m The earth leakage protection function primarily protects people against indirect contact because an earth leakage current can provoke an increase in the potential of the exposed conductive parts The earth leakage pickup value IAn is displayed directly in amperes and the tripping delay follows a cons
47. condary voltage Enter the voltage Enter the rated frequency System frequency Select E71628A System frequency Choose E71629A Go on to the next setting System frequency Confirm 04443728AA 01 2009 Setup Select the command Metering setup System type Caution The neutral current IN cannot be measured with the 3 phase 3 wire 3 CT and 3 phase 4 wire 3 CT types For a 3 pole device the neutral if distributed must be connected to terminal VN of the Micrologic H control unit See the Overview of functions section for information on the available types of measurements Select the command Metering setup Current demand Thermal method based in l t calculation 04443728AA 01 2009 E71630A E71945C Setting up the metering functions Prior to setting up the protection functions or carrying out measurements the following operations are required m entry of the system type m selection of the calculation mode for the demand current m selection of the calculation mode for the demand power m select the power sign m select the sign convention for the power factor measurement Select the system type The Micrologic H control unit offers three measurement options m 3 phases 3 wires 3 CTs method using two wattmeters The currents on phases 11 I2 and I3 are displayed The current on the neutral IN is not display
48. conductors m The long time current setting Ir for the neutral is equal to the setting value m The short time pickup Isd for the neutral is equal to the setting value m Theinstantaneous pickup li for the neutral is equal to the setting value m For ground fault protection Micrologic 6 0 P pickup Ig for the neutral is equal to the setting value Oversized neutral protection installations with a high level of third order harmonic currents or multiples thereof the current in the neutral conductor may exceed that of the phase currents under steady state conditions m The long time current setting Ir for the neutral is 1 6 times that of the setting value m The short time pickup Isd for the neutral is 1 6 times that of the setting value but may not exceed 10 In to limit transients and self protect the installation m The instantaneous pickup li for the neutral is equal to the setting value m For ground fault protection Micrologic 6 0 P pickup Ig for the neutral is equal to the setting value Four pole circuit breakers The initial protection setting is made using the dial on the neutral pole of the circuit breaker The a and buttons on the control unit may then be used for a more precise setting The dial setting constitutes the upper limit for adjustments using the keypad Micrologic control unit 5 0 H 6 0 H and 7 0 H Setting OFF N 2 N Type of neutral Description No neutral protection The distribution system does
49. d fault protection settings m Earth leakage protection settings m Current unbalance l alarm and maximum current protection settings m Voltage protection settings m Setting for other protection functions 100 Schneider 04443728AA 01 2009 Technical appendix Threshold and time delay settings Long time 121 and Idmtl protection Type Range Factory setting Step Accuracy Ir current setting 0 4to In maximum 1A 1 05 to 1 20 Ir tr tripping delay 0 5to 24s maximum 0 5s 20 96 0 96 Short time protection Type Range Factory setting Step Accuracy Isd pickup 1 5to 10 Ir maximum 10A 10 96 tsd tripping delay 0 0 1 0 2 0 3 0 4s maximum 0 1s Instantaneous protection Type Range Factory setting Step Accuracy li pickup 2to 15 In or off maximum 10A 10 96 Ground fault protection on Micrologic 6 0 H Type Range Factory setting Step Accuracy lg pickup depends on rating maximum 1A 10 96 tg tripping delay 0 0 1 0 2 0 3 0 4s maximum 0 1s Earth leakage protection on Micrologic 7 0 H Type Range Factory setting Step Accuracy lAn pickup maximum 0 1A 20 96 0 96 Attripping delay 60 140 230 350 800 ms maximum 1 setting Neutral protection Type Range Factory setting Three pole device Off N 2 1 6xN off Four pole device Off N 2 N N 2 04443728AA 01 2009 Schneider 101 Electric Technical appendix Threshold and time delay settings Current protection
50. der Electric rh gt DB119933 0 At At earth leakage tripping delay 04443728AA 01 2009 E51383A Discovering Micrologic H Caution With the 4P 3D setting the current in the neutral must not exceed the rated current of the circuit breaker 04443728AA 01 2009 Selecting the type of neutral protection Selection dial on four pole circuit breakers On four pole circuit breakers it is possible to select the type of neutral protection for the fourth pole using the three position dial on the circuit breaker m no neutral protection 4P 3D m half neutral protection 3D N 2 m full neutral protection 4P 4D The factory default setting is 3D N 2 Schneider 11 Electric Discovering Micrologic H Main menus The Micrologic H control unit offers access to the main screen and three menus m the main screen displaying the continuous measurement of the phase currents 11 12 13 and the neutral current IN if it exists m the Metering menu m the History maintenance and setup menu m the Protection menu Main screen As long as no functions are activated Micrologic H control units display in real time the current on the most heavily loaded phase The number for that phase is presented in a square E60101A The current in the neutral is displayed if the neutral CT is set as internal or external see Ineutral A settings in the Current protection menu When
51. e effects of intermittent overloads on cables are calculated If power is cut temperature rise in cables is not calculated Circuit breaker thermal limit For certain settings the Idmtl curves may be limited by the 121 curve when the tripping delay tr is set to 24 seconds or by its thermal memory The maximum I t curve remains active for the phases and the neutral even when the Idmtl curves are activated wo 04443728AA 01 2009 Schneider 2 Overview of functions Current protection Short time and instantaneous protection For the default values the setting ranges increment Short time protection steps and setting accuracies see the technical m The short time protection function protects the distribution system against appendix impedant short circuits m The short time tripping delay and the 121 ON and I t OFF options can be used to ensure discrimination with a downstream circuit breaker m This function carries out true rms measurements m Use of l t curves with short time protection OFF selected the protection function implements a constant time curve 12 ON selected the protection function implements an I t inverse time curve up to 10 Ir Above 10 Ir the time curve is constant m Zone selective interlocking ZSI The short time and ground fault protection functions enable time discrimination by For the characteristics and external wiring of the zone delaying the upstream devices to provide the downstream devices the ti
52. e long time rating plug Thermal memory m The thermal memory continuously accounts for the amount of heat in the cables both before and after tripping whatever the value of the current presence of an overload or not The thermal memory optimises the long time protection function of the circuit breaker by taking into account the temperature rise in the cables m The thermal memory assumes a cable cooling time of approximately 15 minutes 22 Schneider 04443728AA 01 2009 Overview of functions Current protection Idmtl long time protection Idmtl Protection Long time current setting Ir and Idmtl tripping delay tr Micrologic control unit Accuracy 5 0 H 6 0 H and 7 0 H Current setting Ir In 0 4 0 5 0 6 0 7 0 8 0 9 0 95 0 98 1 tripping between 1 05 and 1 20 Ir other ranges or disable by changing rating plug Time setting 0 5 1 2 4 8 12 16 20 24 Time delay s trat1 5xlr 0 to 20 0 53 1 2 4 8 12 16 20 24 trat6 x Ir 0 to 20 0 53 1 2 4 8 12 16 20 24 trat 7 2 x Ir 0 to 20 0 53 1 2 4 8 12 16 20 24 trat 10x Ir 0 to 20 0 53 1 2 4 8 12 16 20 24 Time delay s trat 1 5 x Ir 0 to 30 1 9 3 8 7 6 15 2 30 4 45 5 60 7 75 8 91 trat6 x Ir 0 to 20 0 5 1 2 4 8 12 16 20 24 trat 7 2xlr 0 to 20 0 7 0 88 1 77 3 54 7 08 10 6 14 16 17 7 21 2 trat 10x Ir 0 to 20 0 7 0 8 1 43 2 86 5 73 8 59 11 46 14 33 17 19 Time delay s trat 1 5 x Ir 0 to 3096 3 6 7 2 14 4 28 8 57 7 86 5 115 4 144 2 173 1 trat6 x Ir 0 to 20 0 5 1 2 4
53. easurements m phase to phase voltages rms between phases U12 U23 and U31 displayed in volts m phase to neutral voltages rms between the phases and the neutral VIN V2N and V3N displayed in volts Average voltage Average Uavg of the instantaneous voltages between phases U12 U23 and U31 Phase rotation Displays the phase sequence Voltage unbalance Display of the unbalance Uunbal between the three phase to phase voltages displayed as a percentage UA m From Ema o U avg is the average value of the rms voltages of the U avg EZ three phases Uavg rU TUE 0 U12 U23 U31 max is the maximum difference between the voltage of each phase and U avg m Micrologic H uses the two values above to calculate the voltage unbalance U unbal Uavg Schneider Electric 31 Overview of functions Measurements Power energy and frequency For the setting ranges and measurement accuracies Instantaneous power and power factor see the technical appendix Micrologic H offers a number of different measurements m Total power measurements instantaneous active power P in kW instantaneous reactive power in kvar instantaneous apparent power S in kVA m Measurement of the power factor PF Demand power m Display of the demand values for the active power P reactive power Q and apparent power S m Selection of the demand calculation method m Display of the interval over which the val
54. ed The phase to phase voltages U12 U23 and U31 are displayed The phase to neutral voltages V1N V2N and V3N are not displayed m phases 4 wires CTs method using three wattmeters The currents on phases 11 I2 and I3 are displayed The current on the neutral IN is not displayed The phase to phase voltages U12 U23 and U31 are displayed The phase to neutral voltages V1N V2N and V3N are displayed 3 phases 4 wires 4 CTs method using three wattmeters The currents on phases 11 I2 and I3 are displayed The current on the neutral IN is displayed The phase to phase voltages U12 U23 and U31 are displayed The phase to neutral voltages V1N V2N and V3N are displayed Note itis advised not to use the 3 phase 4 wire 4 CT type of measurement unless the neutral is effectively connected to the control unit four pole circuit breaker with an external voltage measurement input E71631A E71632A Select Confirm Choose Select the calculation method for demand current Current Current Current demand demand demand E89200C E89201C Calculation Calculation Calculation method method method block block Window type Window type Window type sliding sliding sliding Interval Interval Interval 15 min 15 min 15 min o Select Adjust Confirm Schneider 55 Electric Setup Setting up the metering functions Current E89215C Current E89214C Current E89213C Select the command
55. endix 04443728AA 01 2009 DB119968 Tripping curves Ground fault protection Micrologic 6 0 H 10 000 5 000 lg 2 A J x In 1 g A JxIn 1 000 1200 A max 500 200 100 50 20 10 t s n e Nn o 05 02 01 005 002 001 05 07 1 2 2 AS 7 1 2 3 5 7 10 200300 i in _ Schneider Electric 91 Technical appendix Voltage measurements Micrologic H is equipped with a three phase voltage power supply that with respect to the distribution system may be considered a delta load The three phase power supply reinjects voltage on an open phase The voltage protection functions react as indicated below Minimum voltage protection This function is based on the measurement of the phase to phase voltages In diagrams 1 3 and 4 on the next page a fuse has blown The control unit reinjects voltage on the failed phase and measures a phase to phase voltage higher than the actual voltage The phase to neutral voltage should be zero but the value measured is not zero In diagram 2 the phase to neutral voltage is effectively zero and the measurement indicates zero as well By limiting the pickup threshold of the minimum voltage protection to the 80 100 range of the rated distribution system voltage the differences between the real voltages and the measured values are not significant and Micrologic will operate under all circumstances in the expected
56. erfaces 10 connection with circuit breaker 11 bottom fastener Indications 12 13 14 LED indicating long time tripping LED indicating short time or instantaneous tripping LED indicating ground fault or earth leakage tripping LED indicating additional protection or auto protection tripping graphics display button for reset of fault trip LED reset and battery test 15 16 17 Navigation 18 19 access button to the Metering menu access button to the History maintenance and setup menu 20 access button to the Protection menu 21 button used to scroll down or reduce the displayed value button used to scroll up or increase the displayed value button used to select or confirm a choice 22 23 Adjustment dials 24 25 26 27 28 long time current setting Ir long time tripping delay tr short time pickup Isd short time tripping delay tsd instantaneous pickup li 29 ground fault pickup Ig 30 ground fault tripping delay tg 31 earth leakage pickup lAn 32 earth leakage tripping delay At 33 LED indicating an overload 34 test button for ground fault and earth leakage protection 35 test connector 1 These buttons include a LED indicating the active menu 04443728AA 01 2009 E71930A E60241B Presentation Micrologic 5 0 control unit short time 3 d
57. etering Current measurements Voltage measurements Power measurements Energy measurements Harmonic measurements Frequency measurements Maintenance Resetting fault indications Viewing the event histories Operation counter and contact wear indicator Checking replacing the battery Tests Schneider Electric 60 61 62 63 Micrologic control units 5 0 K 6 0 H and 7 0 H 2 Scbneider Electric Contents Technical appendix Tripping curves Voltage measurements Zone selective interlocking ZSI Power supply Changing the long time rating plug Thermal memory Data available via the COM communications option Threshold and time delay settings Other settings Measurement setting ranges and accuracy Power factor sign conventions Index 04443728AA 01 2009 04443728AA 01 2009 Schneider E71926A Discovering Micrologic H All Masterpact NT and NW circuit breakers are equipped with a Micrologic control unit that can be changed on site Control units are designed to protect power circuits and connected loads They offer current voltage frequency power and energy measurements The functions provided by Micrologic 5 0 H 6 0 H and 7 0H control units optimise continuity of service and power management in your installation Micrologic 5 0 H X Z X type of protection W 2for basic protection 5for selective protection m 6 for selective ground fault protection W 7 for selective e
58. firm 04443728AA 01 2009 Setup Select the command Va Metering setup Sign convention See page 106 for the description of power factor sign conventions 04443728AA 01 2009 E89222C Setting up the metering functions E89225B Power demand Calculation method block interval Window type fixed Interval o Select Set up the power factor calculation Sign convention IEEE Select E89223C E89226B Power demand Calculation method block interval Window type fixed Interval Adjust Sign convention IEEE alt Choose between IEEE IEEE alternate and IEC E98320A E89227B Power demand Calculation method block interval Window type fixed Interval Confirm Sign convention IEEE alt Confirm Schneider Electric 57 Setup Setting up the COM communications option Select the command When a COM communications option is used it is necessary to m setup the COM communications option Com m authorise remote setting of the Micrologic control unit setup m authorise remote control of the circuit breaker Com zis parameter View and set up the communications option E71723A E71725A Modbus Com Address 45 Modbus Com Address Baud rate Modbus Com E71724 As soon as the Digipact or Modbus communications option is connected the control unit
59. hase to phase 012 U23 U31 Instant phase to neutral V1N V2N V3N voltages kW depending on the type of system Average voltage U average of the phase to phase P kWh Average 3 voltages H Unbalance voltage U unbal of the phase to phase armonic Unbal 3 voltages Phase sequence Phase rotation 14 Schneider 04443728AA 01 2009 E71934B E71935B Discovering Micrologic H A U kw E kWh Harmonic A U V P kW E kWh Harmonic 04443728AA 01 2009 Metering Power measurements P kw Instant access to the following sections Total active power P P Q S Total reactive power Q Total apparent power S Power Power factor PF factor Demand Demand values for the m total active power P m total reactive power Q m total apparent power S Storing and reset of the maximum demand power values Energy measurements E kWh E total Ein E out Reset Energy access to the following sections Total active energy E P Total reactive energy E Q Total apparent energy E S Positive component of m the total active energy E P m the total reactive energy E Q Negative component of m the total active energy E P m the total reactive energy E Q Reset all the energy values to zero Electric Schneide
60. interval Type of window fixed or sliding sliding Calculation interval 5 to 60 minutes 15 minutes 1 minute Demand power Calculation method thermal or block interval block interval or sync to comms Type of window fixed or sliding sliding Calculation interval 5 to 60 minutes 15 minutes 1 minute Power sign P P P flow from top to bottom Sign convention IEEE IEEE IEEE alternate IEC Communication setup Type Range Factory setting Com parameter MODBUS Adress 1 47 47 Baud rate 9600 19200 bauds to 19200 bauds Parity even even none Remote settings Access authorisation yes no yes Access code 0000 to 9999 0000 Remote control manual automatic automatic Protection setup Type Range Factory setting Current protection alarm trip OFF OFF voltage protection other protection 04443728AA 01 2009 Technical appendix m The accuracy of the current measurements depends on both the value displayed or transmitted and the circuit breaker rating where Accuracy 0 5 In 1 5 96 reading Example For a circuit breaker with a 4000 A rating and a current displayed on Micrologic of 49 A the accuracy is 0 596 x 4000 1 596 x 49 21A 04443728AA 01 2009 Measurement setting ranges and accuracy Measurement setting ranges and accuracy Type Range Accuracy at 25 C 11 12 13 0 05 x In to 20 x In 1 5 IN 0 05 x In to 20 x In 1 5 I ground 0 05 x In to In 10 96 earth le
61. isplay at any time the parameters measured during the last ten trips m For each trip the following parameters are recorded tripping cause trip threshold interrupted currents in amperes only if an external power supply is present for Ir Isd li lg or lAn trips date time hours minutes and seconds Alarm history m The alarm history is the means to display at any time the parameters measured during the last ten alarms m For each alarm the following parameters are recorded alarm cause alarm threshold date time hours minutes and seconds Operation counter This function is available only via the COM communications option m Micrologic H stores and displays the total number of operations incremented each time the circuit breaker opens since the initial installation of the circuit breaker stores and displays the total number of operations since the last reset Contact wear indication This function can be used to m Determine the condition of the most worn contact in the circuit breaker A counter is displayed on the screen The contacts must be inspected each time the counter reaches a hundred mark The message Not available or circuit breaker type not defined is displayed if the type of circuit breaker has not been defined In this case see Breaker selection in the Micrologic setup menu under History maintenance and setup m Resetthe indicator after changing the main contact
62. l no harmonics m f the measured power factor is not equal to the cos the power factor is lower that may be an initial indication of harmonic disturbances in an installation m The power factor PF is the means to evaluate the oversizing required for the power sources in an installation m There is a relation between the power factor and the total harmonic distortion of current THD I When the voltage signal is virtually sinusoidal the power factor may be roughly calculated using the equation below COS 2 1 When plotted the above equation produces the graph below showing the PF to cos q ratio depending on the THD I PF cos o o 3 8 1 2 2 1 0 8 0 6 0 4 0 2 0 50 100 150 THD I 40 Schneider 04443728AA 01 2009 Electric Overview of functions 04443728AA 01 2009 Harmonic measurements Quality indicators K factor The K factor is a quality indicator that indicates high order harmonics 22 1 2 n K factor Irms Note lis the amplitude of the current The K factor is used to m calculate temperature rise in the busbars W size the transformers for non linear loads Distortion power When there are harmonics the relation S 2 Q is no longer valid The distortion power D is defined by the equation below D 4 s P Q Distortion factor The distortion factor is the relation between the power factor
63. logic setup Power sign By default Micrologic H uses P for the power flowing from top to bottom terminals The selected direction of flow is valid for m measurement of power and the power factor m measurement of energy m load shedding and reconnection depending on power Select the command Micrologic setup VT ratio If the supply voltage for the control unit exceeds 690 V an external voltage transformer must be installed To display the true voltage values enter the transformation ratio between the primary and secondary voltages of the transformer Note that if Digipact display modules are used the rated distribution system voltage must be entered Select the command Micrologic E setup System frequency If the phase rotation protection function is activated the 400 Hz frequency may not be selected If the 400 Hz frequency is selected the phase rotation protection function is disabled 54 Schneider Electric E71642B E71624A E71627A Setting up the Micrologic control unit Select the sign of the power Select E71643B Power sign x Choose E71644B Confirm Enter the voltage transformation ratio VT ratio Primary Secondary 690V E71625A VT ratio Primary Secondary 690V E71626A VT ratio Primary 690V Secondary BD HD BE Select either the m primary voltage m se
64. lues EPz XEPin XEP out EQ out m asan option access exclusively via the COM communications option energy can be calculated algebraically EP XEPin XEPout EQ XEQin XEQout These values are called signed energies Frequency The frequency of the distribution system is displayed in Hz 32 Schneider 04443728AA 01 2009 Electric DB120067 Overview of functions peak Total Irms Fundamental 50 Hz zn h Harmonic Soa 3 150 Hz s d md 3 Harmonie PP PU PU UP i 5 250 Hz Harmonic PRA CAAA AAAS RAR gt Tz 7 350 Hz Harmonic KAAS RAAAARAAA UR AAAA lg 9 450 Hz 04443728AA 01 2009 Harmonic measurements Origin and effects Harmonics represent the most common power problem encountered in today s electrical installations When harmonics are present the current or voltage waveform is distorted i e itis no longer perfectly sinusoidal Adistorted current or voltage waveform disturbs the distribution of electrical power and power quality is not optimum Definition of harmonics A periodic signal is a combination of the original sinusoidal signal at the fundamental frequency other sinusoidal signals the harmonics with frequencies that are whole number multiples of the fundamental frequency a DC component where applicable Any periodic signal can therefore be represented as the sum of a number of terms
65. manner Voltage unbalance protection This function is based on the measurement of the phase to phase voltages In diagrams 1 3 and 4 on the next page a fuse has blown The control unit reinjects voltage on the failed phase and measures a phase to phase voltage higher than the actual voltage The phase to neutral voltage should be zero but the value measured is not zero In diagram 2 the phase to neutral voltage is effectively zero and the measurement indicates zero as well By limiting the pickup threshold of the voltage unbalance protection to the 0 96 20 range the differences between the real voltages and the measured values are not significant and Micrologic will operate under all circumstances in the expected manner Phase failure Detection of phase failure is not possible on the basis of the minimum voltage and voltage unbalance protection functions The Micrologic power supply requires at least two phases between 100 and 690 V In diagrams 1 4 if two phases have failed Micrologic measures for the three phases the value of the single voltage present e g U12 U23 U31 410 V 92 Schneider 04443728AA 01 2009 Technical appendix Voltage measurements m Diagram 1 Contactor DB120006 m Diagram 2 Fuses DB120007 m Diagram 3 DB120008 m Diagram 4 DB120009 Load Fuses Other measurement
66. me required selective interlocking function see the technical to clear the fault Zone selective interlocking can be used to obtain total appendix on Zone selective interlocking discrimination between circuit breakers using external wiring m intermittent faults are taken into account by Micrologic H and may lead to shorter tripping times than those set Short time pickup Isd and tripping delay tsd Micrologic control unit 5 0 H 6 0 H and 7 0 H Pickup Isd Ir x accuracy 10 1 5 2 2 5 3 4 5 6 8 10 Time delay ms setting 12t Off 0 0 1 0 2 0 3 0 4 at 10 Ir lt On 0 1 0 2 0 3 0 4 1t On or tsd max resettable time 20 80 140 230 350 It Off tsd max break time 80 140 200 320 500 If the without long time protection plug is used and the long time protection function is disabled the short time pickup Isd is automatically multiplied by In instead of Ir as is the standard case Instantaneous protection m The instantaneous protection function protects the distribution system against solid short circuits Contrary to the short time protection function the tripping delay for instantaneous protection is not adjustable The tripping order is sent to the circuit breaker as soon as current exceeds the set value with a fixed time delay of 20 milliseconds m This function carries out true rms measurements Instantaneous pickup li Micrologic control unit 5 0 H 6 0 H and 7 0 H Pickup li In x accuracy 10 2 3 4 6 8 10 12
67. n to previous generations of trip units Wiring m Maximum impedance 2 7 300 metres m Capacity of connectors 0 4 to 2 5 mm m Wires single or multicore m Maximum length 3000 metres m Limits to device interconnection delays are set to zero whatever the position of the the common ZSI OUT Z1 and the output ZSI OUT Z2 can be connected to a adjustment dial maximum of ten inputs a maximum of 100 devices may be connected to the common ZSI IN Z3 and to an input ZSI IN CR Z4 or GF Z5 DB120010 upstream 4 71 circuit breaker 720 tsd 0 3 Terminals Z1 to Z5 correspond to the identical 730 indications on the circuit breaker terminal blocks Z49 250 Z point B 2 Z10 Z20 730 tsd 0 2 240 75 710 downstream Z10 720 circuit breaker 720 230 2 l Z4 p Z50 250 94 Test The portable test kit may be used to check the wiring and operation of the zone selective interlocking between a number of circuit breakers Schneider 04443728AA 01 2009 Technical appendix Caution It is advised to use the AD power supply module rather than an off the shelf 24 V power supply to ensure Class Il insulation on the front panel of the Micrologic H control unit The power supply must have the following characteristics m output voltage 24 V DC m DC ripple less than 596 m power rating 5 W 5 VA m Dielectric withstand input output 3 kV rms 04443728AA 01 2009 E
68. nal for a three pole circuit breaker provides access to the N 2 N 1 6 x N and OFF protection functions Type of circuit Possibles choices breaker Four pole OFF no neutral protection N 2 half neutral protection N full neutral protection Three pole OFF no neutral protection N 2 half neutral protection N full neutral protection 1 6x N oversized neutral protection 04443728AA 01 2009 Setting the neutral protection Using the keypad on the control unit E89237B neutral A Neutral CT Internal Protection OFF BB o0 Select E89240B Ineutral A Neutral CT External Protection BD Select E89242B Ineutral A Neutral CT External Protection N 2 Quit the setting screen Note E89238B E89241B E71657A E89239B Ineutral A Neutral CT neutral A Neutral CT Protection OFF Protection OFF Choose between Confirm m internal m external m none E89242B neutral A Neutral CT neutral A Neutral CT External External Protection N 2 Protection NZ o0 Choose Confirm Do you want to save new settings oo Confirm On four pole circuit breakers setting of the neutral using the keypad is limited by the dial setting Schneider 63 Electric Protection settings Setting the IZ I unbal Imax U min U max U unbal rP max F min F max and phase rotation protection functi
69. ndard IEC 61000 2 2 total harmonic distortion THD U is a single value that expresses the distortion of the voltage at a given point in a distribution system m Micrologic H control units measure the THD for phase to neutral voltages V1N V2N V3N in volts phase to phase voltages U12 U23 U31 in volts taking into account harmonic orders up to 31 m Total harmonic distortion of voltage characterises the distortion of the voltage waveform m THD U values measured and the corresponding phenomena in an installation THD U under 5 is considered normal There is no particular risk of malfunctions THD U between 5 and 8 signals a significant level of harmonic disturbance Malfunctions may occur THD U greater than 8 signals major harmonic distortion Malfunctions are probable An in depth analysis and the installation of compensation equipment is required 38 Schneider 04443728AA 01 2009 Overview of functions 04443728AA 01 2009 Harmonic measurements Quality indicators Total harmonic distortion of current thd l The total harmonic distortion of current is the ratio of the square root of the sum of the squares of the harmonic currents from the 2nd to an infinite order to the rms current N 3 thd l V7 Irms Note Irms is the rms current m Micrologic control units measure the thd l for currents 11 12 I3 and IN taking into account harmonic orders up to 3
70. ng Load shedding Saving settings When a setting is made in any ofthe three menus the screen used to save the modification s may be accessed by pressing one of the three buttons E select yes to save the modifications Do you want select no to cancel and maintain the previous to save new settings settings this screen remains displayed until yes or no are selected E71657A Schneider 13 Electric Discovering Micrologic H Metering Press the Sg button to select the Metering menu a move the cursor down the screen or decrement a value 4 move the cursor up the screen or increment a value select an option in a list confirm a selection or the value of a setting to the previous screen e i return to the main screen Current measurements access to the following sections MB Instant P KW 11 12 13 IN currents s indicates that the operator is in the Metering menu and returns E71932B 11 12 I3 IN depending on the type of E kWh ind Storing and reset of the Max maximum instantaneous IL Currents Harmonic Demand Demand current on the 12 13 IN phases 11 12 13 and on IN depending on the type of system Storing and reset of Max the maximum demand currents Voltage measurements e access to the following sections U V E71933B U Instantaneous p
71. o diagnose a disturbance or check the effectiveness of a solution Harmonic disturbances are subject to a number of standards and regulations m compatibility standards designed for public utilities low voltage IEC 61000 2 2 medium voltage IEC 61000 2 4 m electromagnetic compatibility EMC standards forloads drawing less than 16 A IEC 61000 3 2 for loads drawing more than 16 A IEC 61000 3 4 m utility recommendations for installations A number of international studies have produced data used to estimate the typical harmonic values encountered in utility distribution systems Below is a table presenting the levels of harmonics that in the opinion of many utility companies should not be exceeded Voltage individual harmonics of even and odd orders for m low voltage LV systems m medium voltage MV systems m extra high voltage EHV systems Odd harmonics not multiples of 3 Odd harmonics multiples of 3 Even harmonics Order n LV MV EHV Order n LV MV EHV Order n LV MV EHV 5 6 6 2 3 5 2 5 1 5 2 2 1 5 1 5 7 5 5 2 9 1 5 1 5 1 4 1 1 1 11 25 3 5 1 5 15 0 3 0 3 0 3 6 0 5 0 5 0 5 13 3 3 18 21 0 2 0 2 0 2 8 0 5 0 2 0 2 17 2 2 1 gt 21 0 2 0 2 0 2 10 0 5 0 2 0 2 19 15 1 5 1 12 0 2 0 2 23 1 8 1 0 7 gt 12 0 2 0 2 25 1 5 1 0 7 Note 04443728AA 01 2009 the individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with res
72. ons since last reset 0 Reset 17824 Operations since last reset 6923 Reset Reset o then o or cancel the reset then confirm Select the command Event history Contact wear Contact wear is indicated from 0 to 900 The contacts should be inspected every time the counter reaches a multiple of 100 86 Schneider Electric Check the wear ofthe contacts Contact wear E71710C 59 04443728AA 01 2009 Maintenance Ifthe battery needs to be changed order a new battery with the Schneider Electric catalogue number 33593 m Lithium battery m 1 2 AA 3 6 V 800 mA h m Ambient temperature 130 C 04443728AA 01 2009 Checking replacing the battery Check the control unit battery Merelogie z o M DOr CDO AS js E89248A Press and hold down the test button on the control unit to check the LEDs and the battery The battery information is displayed if the control unit is equipped with an external power supply or if the circuit breaker is ON ERE Battery fully charged Battery half charged No battery or must be replaced Replacing the control unit battery 1 remove 2 remove the battery the battery cover E71751A DB119959 DB119960 3 insert a new battery 4 put the cover back Check the polarity in place Press the battery test button to check the new battery 37 gd
73. ons using the keypad Select the corresponding menu E71661B type of protection IM Current e protection operating mode IZ Alarm Off Alarm or Trip ickup threshold unbal 96 inde pickup time delay 11 max A dropout threshold 2 dropout time delay Specific case for I alarm m Only the following choices are available r On activation of the alarm without fault tripping by the circuit breaker IN max A Off alarm disabled Voltage Example Maximum voltage setting U max protection m Select Alarm mode Umin V Umax V Umax V Umax V Umax V o Pick up Pick up Pick up Uunbai 690V 690V 690V 5 00s 5 00s 5 00s E Other protection Drop out Drop out Drop out 690V 690V 690V rPmax W 0 505 0 505 0 505 Fmin Hz MD RE Select the first setting Choose Off or Alarm Confirm Fmax Hz Phase i rotation Umax V Pick up In trip mode the dropout threshold is equal to the 690V pickup threshold The dropout time delay is fixed and equal to 1 second 5 00s Drop out 690V 0 50s BM E Select the first setting Choose Trip 64 Schneider Electric 04443728AA 01 2009 Protection settings Setting the Z unbal Imax U min U max U unbal rP max F min F max and phase rotation protection
74. ot taken into account This function does not trip the circuit breaker but can be used to set off an alarm linked to an M2C or M6C contact disconnection and reconnection of non priority loads The load shedding and reconnection function is determined by thresholds and time delays gt 9 Long time 1 protection a Curve 3 4 0 d 1 pickup threshold 2 pickup time delay 3 dropout threshold 4 dropout time delay The pickup threshold is always greater than or equal to the dropout threshold Load shedding and reconnection depending on power Load shedding and reconnection depending on power calculates the total active power on the three phases This function does not trip the circuit breaker but can be used to set off an alarm linked to an M2C or M6C contact disconnection and reconnection of non priority loads The load shedding and reconnection function is determined by thresholds and time delays th DB119952 0 1 pickup threshold 2 pickup time delay 3 dropout threshold 4 dropout time delay The pickup threshold is always greater than or equal to the dropout threshold 30 Schneider 04443728AA 01 2009 Overview of functions For the setting ranges and measurement accuracies see the technical appendix To display the phase to neutral voltages select the 4w 4CT option in System type in the Metering setup menu under History maintenance and setup 04443728AA 01 2009
75. other digits Select the command Authorise remote control of the circuit breaker ie Remote Remote i Remote control control control Remote control It is possible to set circuit breaker control to local only Manual or to local and remote Auto au Press enter Select Auto or Manual Confirm 04443728AA 01 2009 Schneider 59 Protection settings Fine adjustment of the long time 121 short time and instantaneous settings using the keypad Select the command Current protection E71738A long time current setting Ir long time tripping delay tr short time pickup Isd short time tripping delay tsd instantaneous pickup li E60275A E60149A E60276A Trip 1000 A 1 0s 2000 A 0 2s 4000 A BB Select a setting Adjust the value Confirm When all the settings have been adjusted quit the Screen by pressing one of the menu access buttons This saves the new values E60277A E60277A E71657A Do you want to save new settings BD Adjust the other settings Quit the setting screen Confirm and confirm 60 Schneider 04443728AA 01 2009 Protection settings Fine adjustment of the long time Idmtl short time and instantaneous settings using the keypad Select the command E71739A Current e protection ldmt A long time current setting Ir long time tripping delay tr Idmtl protection DT SIT VIT EIT
76. p to order 31 Displacement spectrum ith respect to V1N of even and odd harmonics up to order 31 36 Schneider 04443728AA 01 2009 Electric Overview of functions Harmonic measurements Quality indicators Fundamental Micrologic H control units can determine the value of the fundamental signals for m currents 11 12 I3 and IN in amperes m voltages phase to neutral V1N V2N V3N in volts phase to phase U12 U23 U31 in volts m power active P kW reactive Q KVAR apparent S kVA Current and voltage rms values m The rms current is the square root of the sum of the squares of the rms voltage values for each harmonic from the fundamental to an infinite order DIR Irms Z ain m The rms voltage is the square root of the sum of the squares of the rms current values for each harmonic from the fundamental to an infinite order 0 2 Urms EU Total harmonic distortion of current THD l The total harmonic distortion of current is the ratio of the square root of the sum of the squares of the harmonic currents from the 2nd to an infinite order to the fundamental current 00 2 I n 2 THD N Ifund Note m fund is the fundamental current m Irms is the rms current Distortion is expressed as a percentage and may exceed 100 Defined by standard IEC 61000 2 2 total harmonic distortion THD I is a single
77. pect to the rms value of the fundamental This value is displayed on the graphic screen of the Micrologic H Which harmonics are we concerned with m Individual harmonics of odd orders at low frequency m Mainly order 3 5 7 11 and 13 Schneider 35 Electric Overview of functions Harmonic measurements Quality indicators Micrologic H control units can quantify and evaluate the harmonic distortion of current and voltage waves using the quality indicators listed below m measurement of the fundamental signal m phase displacement of the fundamental signals m harmonic distortion THD and thd E COS Q m power factor m factor m distortion power m distortion factor m crest factor m amplitude spectrum of even and odd harmonics up to order 31 m displacement spectrum with respect to V1N of even and odd harmonics up to order 31 These indicators are the indispensable tools used to determine any required corrective action Access to quality indicators The quality indicators may be accessed on the Micrologic H screen and or via the communication module Quality OntheMicrologicH Via the indicator screen communication module Measurement of the fundamental Phase displacement of the fundamental Harmonic distortion THD and thd Cos o Power factor K factor Distortion power Distortion factor Crest factor Amplitude spectrum of odd harmonics up to order 31 Amplitude spectrum of even harmonics u
78. pping following voltage drop under a set value where the voltage drop overrun of the ground was caused by a short circuit fault pickup Ig or the earth leakage pickup lAn Micrologic 5 0 H Ir ded tg li l n test reset E89211A Signals tripping due to m self protection function o temperature o ASIC power supply instantaneous pickup for circuit breaker self rotection m protection functions O current unbalance unbal maximum current 11 max I2 max 13 max IN max o voltage unbalance U unbal maximum voltage U max minimum voltage U min o o o o reverse power rP max maximum frequency F max minimum frequency F min m LEDs on buttons to access the menus The activated LED indicates the menu for which the screen is displayed Metering History maintenance and setup Protection E60485A aeo 48 Schneider Electric 04443728AA 01 2009 E89212B Overview of functions COM module on chassis optional Circuit breaker COM module on circuit breaker Micrologic H control unit 04443728AA 01 2009 COM communications option Communication options Digipact and ModBus are the indispensable elements when integrating Micrologic H in the Digivision and SMS Powerlogic installation management systems which communicate via the BatiBus and ModBus protocols External gateway
79. r 15 E71936B Discovering Micrologic H 16 A V kW kWh Harmonic Schneider Electric Metering Harmonic measurements Harmonic Waveform access to the following sections 1 2 3 In U12 23 31 Fundament THD thd FFT l A U V P W U U 96 1 3 5 7 31 U 3 5 7 31 Waveform capture for currents 11 12 and I3 Waveform capture for the neutral current IN Waveform capture for voltages U12 U23 and U31 Measurement of the fundamental of currents 11 12 13 and IN Measurement of the fundamental of voltages U12 U23 and U31 and V1N V2N and V3N Measurement of the fundamental of active power P reactive power Q and apparent power S Total harmonic distortion of currents 11 I2 I3 and IN Total harmonic distortion of voltages U12 U23 and U31 and V1N V2N and V3N Total harmonic distortion of currents 11 I2 I3 and IN Total harmonic distortion of voltages U12 U23 and U31 and V1N V2N and V3N Amplitude spectrum of odd current harmonics up to H31 Amplitude spectrum of odd voltage harmonics up to H31 04443728AA 01 2009 E71937B Discovering Micrologic H V kW kWh Harmonic F Hz 04443728AA 01 2009 Metering Frequency measurement
80. r phase since last reset maximum and minimum recommended demand power per phase time stamping of demand power maximums and minimums Energy total active and reactive energy positively incremented energy negatively incremented energy System frequency Power factor Reset date of demand currents demand power and energy Power quality indicators instantaneous measurements together with maximums and minimums fundamental apparent currents fundamental phase to neutral and phase to phase voltages fundamental rms currents fundamental active reactive and apparent power per phase and total distortion power per phase and total THD and thd of the phase to neutral and phase to phase voltages THD and thd of the currents phase angle between the voltages and the currents K factors peak voltages peak currents phase angle between the voltages K factors averages demand K factors demand K factors per phase maximum demand K factor per phase since last reset prediction of demand K factors time stamping of demand K factor maximums per phase harmonics phase to neutral and phase to phase voltage harmonic amplitudes current harmonic amplitudes phase to neutral and phase to phase voltage harmonic phase angle current harmonic phase angle monitoring of electrical parameters dates of last resets of minimums and maximums wavefo
81. recognises it and displays the type of module on the graphic screen Address 47 Baud rate Automatic time updates are possible only with the Modbus system Baud rate 9600 Parity None 9600 Parity None 9600 Parity None BD 2 BUD Select an existing Adjust Confirm parameter Adjust all the other parameters for the communications option in the same manner DIGIPACT MODBUS Address 1 255 1 47 Baud rate 9600 bauds 19200 bauds Parity Even None selective command Authorise remote setup of Micrologic Com E setup Remote Remote Remote Remote settings settings settings settings Access Access Access permit permit permit The access code is a password that must be provided No by the supervisor prior to accessing the Micrologic No Yes Yes settings Access code 0000 BB Select existing setting Choose Confirm 58 Schneider 04443728AA 01 2009 Electric Setup Setting up the COM communications option Ifthe operator does not enter a specific access code the default access code is 0000 and is requested by Remote settings Access permit Yes Remote E71729A E71730A E71731A Remote settings Access permit Yes the supervisor settings Access permit Yes Access Access Wo o0 Access code Select the existing access Enter the first digit Confirm and proceed in code setting the same manner for the
82. ress baud rate parit Micrologic parameter nn paran setup 3 Authorisation of access to settings via Metering Remote the COM communications option setup settings Authorisation of access to the circuit breaker ON Com Remote and OFF commands via the COM communications setup control option 04443728AA 01 2009 Electric Schneider 19 E71712A Discovering Micrologic H Protection Press the n button to select the Protection menu a move the cursor down the screen or decrement a value 4 move the cursor up the screen or increment a value select an option in a list confirm a selection or the value of a setting indicates that the operator is in the Protection menu and returns A to the previous screen return to the main screen N b Current protection Current eo protection Current eg access to the following sections protection Voltage protection Fine settings of the long time l t short time and Other A instantaneous protection functions protection Fine settings of the long time Idmtl Load ld mtl A short time and instantaneous protection functions shedding Load Fine settings ofthe shedding P 2 A m ground fault Micrologic 6 0 H m earth leakage Micrologic 7 0 H protection functions Selection of the type of neutral ne utral A sensor and type of neutral protection Setting ofthe E4 alarm I Alarm Setting of the current
83. rm capture event history file in the measurement module minimum and maximum file with time stamping maintenance file in the measurement module minimum and maximum reset counters with time stamping maximum demand current reset counters with time stamping maximum demand power reset counters with time stamping energy reset counters with time stamping 04443728AA 01 2009 Schneider 99 Electric Technical appendix Data available via the COM communications option Setup Maintenance m Setting of the control unit date and time m Password for the measurement module m Control unit ID code m Control unit ID name m Selection of the measurement calculation algorithm m Sign convention for the active power m Total energy measurement mode m Interval for the demand current calculation window m Power quality indication m Demand power calculation mode m Interval for the demand power calculation window m Battery charge indication m Trip and alarm histories m Operation counter and contact wear indicator m Assignment and setup of programmable contacts m Eventlog and maintenance register m Power factor sign conventions m Monitoring parameters m Monitoring priorities levels m Waveform capture Protection m Circuit breaker rated current m Type of neutral protection m Long time l t protection settings m Long time Idmtl protection settings m Short time protection settings m Instantaneous protection settings m Groun
84. rting device has its own harmonic current fingerprint with to neutral voltage V1N different amplitudes and displacements These values in particular the amplitude for each harmonic order are essential for the analysis of power quality m FFT Fast Fourier Transform frequency spectrum The Micrologic H control unit can display the FFT amplitude spectrum of odd harmonics from the 3rd up to 31st The Micrologic H control unit presents the amplitude of each harmonic order with respect to its frequency in the form of a histogram called a spectral analysis A s t 1 DB120036 Above is an example of the spectral analysis of a square wave signal m Harmonic content of the nth harmonic for the phases 11 12 I3 The individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with respect to the rms value of the fundamental N or un 100 190 Ifund Ufund Note m fundis the fundamental current U fundis the fundamental voltage m Harmonic content of the nth harmonic for neutral current The individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with respect to the rms value of the Neutral In _ Un or Un 100 UN ms in 100 IN rms Note m Nrmsisthe Neutral rms current Nrms is the Neutral rms voltage m The Micrologic H control unit indicates the FFT amplitude spectrum and the
85. rve curve It OFF curve gu Ir E th Ir att I 8 8 8 8 tr tr Isd Isd tsd tsd li li 0 0 0 o i Ir LT threshold tr LT tripping delay Isd ST pickup tsd ST tripping delay li Instantaneous pickup gu gu g th g th Ig lg tg tg 0 l 0 l 0 0 Ig ground fault 04443728AA 01 2009 tg ground fault tripping delay Schneider Electric Discovering Micrologic H Consider a 2000 A circuit breaker DB119918 DB119920 DB119932 Setting Micrologic 7 0 H us Set ing the dials the thresholds DB119930 ee 3 5 2 5 6 2 8 4 In 2000 A Ir 0 5 x 2000 1000 A Isd 2x 1000 2000 A li 2x 2000 4000 A 1 5 10 xir setting Hea IAn 1A ay 5 n 2 10 In 2000 A 1 20 30 earth leakage See pages 22 to 26 for selection of the setting ranges Set the time delays 8 long time tr 1 S short time tsd 0 2s At 140 ms earth leakage fA Thresholds Time delays I2tON curve I2t OFF curve 124 curve 12 curve th Ir E th Ir gu ath tr tr Isd Isd tsd tsd li 0 io i i Ir LT threshold tr LT tripping delay Isd ST pickup tsd ST tripping delay li Instantaneous pickup gt I gt 0 1 lAn earth leakage pickup 10 Schnei
86. ry unless the setting is modified using the adjustment dial For remote settings using the communications option see the Remote settings section in the Com setup menu under History maintenance and setup i Schneider DB119914 Setting procedure Settings using the dials DB119915 m Open the protective cover m Make the necessary settings using the dials m The screen automatically displays the relevant curve m Check the set value on the screen in absolute value in amperes A and in seconds s Settings using the keypad m The Do under the screen may be used for fine adjustments of the settings made using the dials m All the settings not available via the dials are made in the same manner using the keypad E60252B Caution overload long time or short circuit short time and instantaneous protection setting B UT TER m deletes all the fine adjustments previously made using the keypad for the overload long time and short circuit short time and instantaneous protection m does not affect the fine adjustments made using the keypad for ground fault and earth leakage protection m does not affect any other settings made using the keypad Similarly a new ground fault or earth leakage protection setting made using one of the dials m deletes all the fine adjustments previously made using the keypad for
87. s Reset is also carried out via Breaker selection in the Micrologic setup menu Note if the control unit is changed the circuit breaker must be defined again In this case see Breaker selection in the Micrologic setup menu under History maintenance and setup 46 Schneider 04443728AA 01 2009 Electric Overview of functions The procedure required to reclose the circuit breaker following a fault trip is presented in the circuit breaker user guide Concerning the presence or absence of an external power supply see the Power supply section in the technical appendix Caution The battery maintains the trip indications If no indications are displayed check the battery 04443728AA 01 2009 E60444A E89206A LEDs and display screens LED indicator Signals overrun of the long time current setting 1 125 x Ir E89205A Overload bargraph on the main screen Micrologic 5 0 H Signals the load level on each phase as a percentage of Ir Fault trip indications m Control unit status The circuit breaker has tripped The control unit may or may not have an external power supply The voltage measurement inputs may be connected upstream or downstream control unit without an external power supply and with voltage measurement input connected downstream control unit with an external power supply and with voltage mea
88. s operation and maintenance aids via no no yes communications bus m f the 24 V DC external power supply AD module is used the maximum cable length between 24 V DC G1 G2 and the control unit F1 F2 must not exceed 10 metres m The communications bus requires its own 24 V DC power source E1 E2 This source is not the same as the 24 V DC external power supply module F1 F2 Selection of the voltage measurement inputs The voltage measurement inputs are standard equipment on the downstream connectors of the circuit breaker Itis possible to measure distribution system voltage externally using the PTE external voltage measurement input option With this option the internal voltage measurement inputs are disconnected The PTE option is required for voltages greater than 690 V in which case a voltage transformer is required When the PTE option is implemented the supply circuit of the voltage measurement input must be protected against short circuits Installed as close as possible to the busbars this protection function is ensured by a P25M circuit breaker 1 A rating with an auxiliary contact cat no 21104 and 21117 The supply circuit of the voltage measurement input is reserved exclusively for the control unit and must never be used to supply other circuits 96 Schneider 04443728AA 01 2009 Electric Technical appendix Caution Following any modifications to the long time rating plug all control
89. s are available for communication over other networks including ProfiBus Ethernet etc The communications option makes possible the following remote functions m device identification address device type control unit type type of long time rating plug m settings reading of the dial settings fine adjustments within the range determined by the dial protection and alarm settings setup of the M2C M6C contacts Operating and maintenance aids m Protection and alarm values standard set m Measurement values currents voltages frequencies power etc m Fault values faulttype interrupted current m Histories and logs trip history alarm history event history m Indicators contact wear counters etc maintenance register Schneider 49 Electric Setup Setting up the optional M2C M6C contacts Select the command Select an alarm Note Contacts an alarm may be selected if the Alarm or Trip Alarm mode was selected during setup of the M2C M6C given protection function in the Protection menu Alarm 3 type E i 92 S2 MD E MD E Select a contact Select an alarm Confirm Select the command Set up each contact Contacts _ m Select the latching m 2 6 Setup 8 E M2C M6C T Setup 51 latching
90. shedding P Current protection Voltage protection Other protection Load shedding Load shedding P 04443728AA 01 2009 Load shedding depending on power Load shedding P Access to load shedding and reconnection depending on power Schneider 21 Electric Overview of functions Current protection 121 long time protection For the default values the setting ranges increment The long time protection function protects cables against overloads This function is steps and setting accuracies see the technical based on true rms measurements appendix It is possible to select either I t long time protection Idmtl long time protection long time protection Long time current setting Ir and standard tripping delay tr Micrologic control unit Accuracy 5 0 H 6 0 H and 7 0 Current setting Irz In 0 4 0 5 0 6 0 7 0 8 0 9 0 95 0 98 1 tripping betweeen 1 05 and 1 20 Ir other ranges or disable by changing rating plug Time setting 0 5 1 2 4 8 12 16 20 24 Time delay s trat1 5x Ir Oto 30 12 5 25 50 100 200 300 400 500 600 trate xir O0to 20 07 1 2 4 8 12 16 20 24 trat7 2xIr Oto 20 0 7 0 69 1 38 2 7 5 5 8 3 11 13 8 16 6 In circuit breaker rating 1 Oto 40 2 Oto 60 m Itis possible to enhance the Ir setting accuracy reduced range or disable the long time protection function by using a different long time rating plug See the technical appendix Changing th
91. supply m The COM communications module can be used to transmit alarms to a supervisor 44 Schneider 04443728AA 01 2009 E60492A E60491C Overview of functions An alarm is issued if the Alarm or the Trip Alarm mode was set for the given protection function Caution The M2C and M6C contacts require an auxiliary power supply See the Power supply section in the technical appendix Wiring diagram for M2C contacts Wiring diagram for M6C contacts D eS mn de or 24V0V Com Q1 Q2 Q3 ala ada NN 04443728AA 01 2009 DB120002 DB120003 DB120004 Optional M2C and M6C contacts m Available types of contacts M2C up to two contacts maximum S1 and S2 M6C up to six contacts maximum S1 to S6 m Current protection m Voltage protection Ir U min Isd Umax F max li U unbal rP max phase rotation Alarm unbal T1 max 12 max 13 max IN max m Load shedding and reconnection current power P m Latching settings non latching contact the contact remains activated as long as the fault that aused the alarm has not been cleared latching contact the contact remains activated until it is reset Reset menu time delay contact the contact remains activated for the duration of an adjustable time delay or until it is reset Reset menu locked to 1 the contact is forced to 1 for an automation test locked to 0 the cont
92. surement input connected upstream Micrologic 5 0 H e e e Ir Isd Ig li test reset E89207B Micrologic 5 0 H Ir Isd 1g li l n test reset A LED signals the type of fault Ir Isd li Ig IAn or Ap The type of fault is signalled by a LED and on the graphic display Schneider Electric 47 Overview of functions LEDs and display screens m Fault trip LEDs m The LEDs indicate the type of fault that tripped the circuit breaker m The LEDs are located in the upper part of the front panel red Ir Isd li Ig I n and Ap LEDs m When activated a LED remains ON until it is locally reset m Ir LED m 15 li LED E Signals tripping following overrun of the long time current setting Ir The self protection function excessive temperature m 19 lAn LED E89209A Signals tripping following overrun of the short time pickup Isd or the instantaneous pickup li m ApLED fault detected in ASIC power supply or instantaneous self protection built into the device trips the circuit breaker and turns the Ap LED on Micrologic 5 0 H FH An test reset E89210A A number of simultaneous causes may result in tripping For example a short circuit and a distribution System voltage under a set value The LED signalling the last fault chronologically is the only one to remain ON E g the Ap LED may signal a Signals tri
93. t the neutral protection setting N N 2 1 6 x N OFF Schneider 27 Electric Overview of functions For the pickup and dropout thresholds and time delays see the technical appendix If the voltage protection functions are activated and the voltage measurement inputs are still energised it is impossible to reset and close the circuit breaker 28 Scbneider Electric DB119946 DB119998 Voltage protection Minimum voltage maximum voltage voltage unbalance Operating principle protection tripped protection tripped by a minimum value by a maximum value th gu 1 3 3 1 2 4 4 2 gt gt 0 Umin 0 U max U unbal 1 pickup threshold 2 pickup time delay 3 dropout threshold 4 dropout time delay For protection tripped by a minimum or maximum value it is possible to set a pickup threshold 1 that activates an alarm a contact and or tripping a pickup time delay 2 that steps in when the pickup threshold 1 is reached a dropout threshold 3 corresponding to deactivation of the alarm and or contact a dropout time delay 4 that steps in when the dropout threshold 3 is reached For protection tripped by a minimum value the dropout threshold is always greater than or equal to the pickup threshold m For protection tripped by a maximum value the dropout threshold is always less than or equal to the pickup threshold m If both the minimum and maximum protection functions are activated at the same time
94. tage transformer is installed m entry ofthe rated frequency Select the display language E719381 Language English US Language English UK Espanol English UK Francais Italiano Confirm Espanol Francais Select To return to English 1 Return to the main screen by pressing any of the three buttons or press the button followed by any ofthe three buttons Set the date and time m Enter the date and time for time stamping purposes in the trip and alarm histories Date Date Date 2 Select the History maintenance and setup menu by pressing 3 Select the Micrologic setup menu by moving the cursor up on the first menu Move the cursor down on the third menu and confirm by pressing 4 Select the Language menu by moving the cursor up on the first menu Confirm by pressing E71611B E71612B 01 01 2000 Time 01 2000 Time Time 18 30 03 18 30 03 18 30 03 7 BB Selectthe date Enter the day 88 then e Enter the month m The resolution of the time setting is 20 ms 04443728AA 01 2009 Setup Setting up the Micrologic control unit Date and time are backed up by battery E71613B E71614B Date Date If time is not synchronised by the supervisor via the communication module a drift of up to one hour per year may be observed 01 01 2000 Time 18 30 03 01 01 0 Time 18 30 03 BD
95. tant time curve m An external rectangular sensor is required for this function m This function is inoperative if the long time rating plug is not installed J Protected against nuisance tripping Ar DC component withstand class A up to 10 A m If the optional external voltage measurement input is used a 24 V DC external power supply must be connected to Micrologic H terminals F1 F2 Pickup value lAn and tripping delay At Micrologic control unit 7 0 H Pickup A lAn accuracy 0 to 20 0 5 1 2 3 5 7 10 20 30 Time delay ms settings At max resettable time 60 140 230 350 800 At max break time 140 200 320 500 1000 26 Schneider 04443728AA 01 2009 Overview of functions For the pickup and dropout thresholds and time delays see the technical appendix DB119995 DB119996 04443728AA 01 2009 Current protection Alarm current unbalance maximum current Operating principle protection tripped by a maximum value th JL 1 pickup threshold 2 pickup time delay 3 dropout threshold 4 dropout time delay gt Alarm unbal m For protection tripped by a maximum value it is possible to set a pickup threshold 1 that activates an alarm a contact and or tripping a pickup time delay 2 that steps in when the pickup threshold 1 is reached a dropout threshold 3 corresponding to deactivation of the alarm and or contact a dropout time dela
96. the minimum threshold is automatically limited to the value of the maximum and vice versa nono Minimum voltage protection U min m This function calculates the minimum rms value of the three phase to phase voltages m Protection is activated when at least one of the three phase to phase voltages U12 U23 U31 is below the threshold set by the user m This protection function does not detect phase failure Maximum voltage protection U max m This function calculates the maximum rms value of the three phase to phase voltages m Protection is activated when the three phase to phase voltages U12 U23 U31 are simultaneously above the threshold set by the user Voltage unbalance protection U unbal This protection is activated by an adjustable level of unbalance between the rms values of the three phase to phase voltages This function calculates the rms value of the unbalance between the three phase to phase voltages U m From U avg is the average value of the rms voltages of the U avg three phases 0 U12 U23 U31 Uavg ee E max is the maximum difference between the voltage of each phase and U avg m Micrologic H uses the two values above to calculate the voltage unbalance Uunbal Emex U avg 04443728AA 01 2009 Overview of functions For the pickup and dropout thresholds and time delays see the technical appendix If the voltage protection functions are activated and the
97. the short time protection Following a trip the short time tsd tripping delay is reduced to the value of the minimum setting for 20 seconds Ground fault protection and intermittent faults The ground fault protection implements the same function as the short time protection see above 98 Schneider 04443728AA 01 2009 Technical appendix Data available via the COM communications option The COM communications option can be used to Measurements remotely access the Micrologic H measurement setting maintenance and protection values Currents instantaneous currents maximum and minimum instantaneous currents average instantaneous currents instantaneous current unbalance per phase maximum and minimum instantaneous current unbalance per phase Demand current demand current per phase maximum and minimum demand current per phase since last reset prediction of demand current per phase time stamping of demand current maximums and minimums Voltages phase to neutral and phase to phase voltages average phase to neutral and phase to phase voltages phase to neutral and phase to phase voltage unbalance maximum and minimum phase to neutral and phase to phase voltage unbalance Active reactive and apparent power per phase Demand power demand power per phase maximum and minimum demand power pe
98. tivated when the total active power of the three phases flows in the direction opposite that set by the user is greater than the pickup threshold 1 for atime greater than the time delay 2 Note the direction of flow is set by the user in the Power sign section of the Micrologic setup menu under History maintenance and settings m corresponds to the normal direction of flow i e from the top terminals on the circuit breaker to the bottom terminals m isthe opposite Minimum and maximum frequency protection F min and F max These functions monitor the value of the frequency on the distribution system Phase rotation alarm This alarm is activated if two of the three phases are inverted Note the alarm is activated following a fixed 300 millisecond time delay If one of the phases is absent the alarm will not operate If the 400 Hz frequency is set the alarm cannot be activated Schneider 29 Electric Overview of functions Load shedding and reconnection For the pickup and dropout thresholds and time delays Load shedding and reconnection depending on current see the technical appendix The pickup curve for load shedding and reconnection depending on current is parallel to the LT I t and Idmtl curves If a without long time protection rating plug is installed the load shedding reconnection function based on current cannot be activated m l t protection the neutral is taken into account m Idmtl the neutral is n
99. tton Different pickup and dropout thresholds Ei Ir Isd li 1 m Delayed alarms are activated when the and dropout thresholds overrun and the corresponding time delays have expired 1 Alarm unbal i i i Other alarms 12 max D D 5 T3 max IN max Identical pickup and dropout thresholds Voltage protection Alam Trip Alarm DR U min U max U unbal Otherprotection rP max i F max ir Isd li ILalarns Phase rotation Current Power Other alarms m History logging Alarm mode as soon as a given protection threshold is overrun an alarm is recorded in the Alarm history D Trip mode as soon as a given protection threshold is overrun the circuit breaker trips and the fault is recorded in the Trip history m The Protection setup menu under History maintenance and setup is used to enable or disable the Trip mode that is displayed in the protection setting screens On leaving the factory the protection functions are set to Alarm mode m The M2C M6C contacts menu under History maintenance and setup is used to link an M2C or M6C contact to an alarm M2C and M6C contacts may not be used together They require a 24 V external power
100. ue is calculated m The maximum demand values are displayed and stored in memory m The stored maximums can be reset at at any time Note m the calculation method the type of calculation window fixed or sliding and its duration may be set in the Metering setup menu under History maintenance and setup m the synchronisation function Synchro Com is available only with the COM communication option with this function the demand power is determined on the basis of a signal synchronised by the communication module m these settings apply to all demand powers active power P reactive power Q and apparent power S If the settings are modified the demand values are systematically recalculated Energy Micrologic H offers a number of different measurements m total energy total active energy E P in kWh total reactive energy E Q in kvarh total apparent energy E S in kVAh m energy consumed Energy in positively incremented active energy E P in kWh reactive energy E Q in kvarh m energy supplied Energy out negatively incremented active energy E P in kWh o reactive energy E Q in kvarh m energy values can be reset Note m the Energy in and Energy out values are incremented according to the power sign set in the Metering setup menu under History maintenance and setup m as standard the total calculated energy values are absolute total values They represent the sum of the energy in and out va
101. unit protection parameters must be checked Caution If no long time rating plug is installed the control unit continues to operate under the following downgraded conditions m the long time current setting Ir is 0 4 m the long time tripping delay tr corresponds to the value indicated by the adjustment dial m the earth leakage protection function is disabled m the voltage measurement inputs are disconnected 04443728AA 01 2009 DB119974 DB119976 Changing the long time rating plug Select the long time rating plug A number of long time rating plugs are available for Micrologic H control units Part number Setting range for the Ir value 33542 standard 0 4to1xIr 33543 low setting 0 4 to 0 8 x Ir 33544 high setting 0 8to 1xIr 33545 without long time protection m Ir Infor the short time protection setting m Frequency protection not available m Load shedding reconnection based on current not available Change the long time rating plug Proceed in the following manner 1 open the circuit breaker 2 open the protective cover of the control unit 4 snap out the rating plug DB119975 DB119977 3 completely remove the long time rating plug screw 5 clip in the new rating plug 6 refit the screw for the long time rating plug 7 check and or modify the control unit settings Schneider 97 Electric Technic
102. wer factor sign conventions Flow of active and reactive power DB120011 P from load P to load Q to load Q to load P from load P to load Q from load Q from load DB119979 DB119980 leading lagging pf lagging pf leading IEEE Alt DB119981 106 Schneider 04443728AA 01 2009 Electric 04443728AA 01 2009 Schneider 107 Index A Activation 27 28 29 30 44 Active reactive apparent energy 32 75 Active reactive apparent power 73 AD power supply module 95 Address 58 Alarm 44 47 Alarm history 46 85 B Baud rate 58 Buttons 5 6 Circuit breaker selection 53 COM communication option 49 58 99 Contact 45 50 Contact wear 86 Control unit identification 4 Control unit battery 5 87 Cos o 40 Crest factor 41 Current demand calculation 31 55 D Date and time 52 Demand current 55 69 Demand power 32 56 Digipact 58 Direction of power flow 54 Distortion factor 41 Distortion power 41 Dropout 27 28 29 30 44 DT 23 61 E Earth leakage protection 26 Earth leakage protection tripping delay A 26 EIT 23 61 F F max 29 64 F min 29 64 Fault 84 Frequency 32 54 82 FTT 42 80 Full neutral protection 25 63 Fundamental 77 Graphic display 5 Ground fault Earth leakage fault protection test 88 Ground fault protection 26 H Half neutral protection 25 63 Harmonics 33 History setup and maintenance menu 13 18 HVF 6 23 E 62 1 Alarm 27 64 lavg 27 max 27 64 unbal 64
103. y 4 that steps in when the dropout threshold 3 is reached m The dropout threshold is always less than or equal to the pickup threshold 1 Alarm m The alarm function is tripped by the rms value of an earth leakage current m This alarm signals an earth leakage current under the pickup value and does not produce circuit breaker tripping Current unbalance protection unbal m This protection is activated by an adjustable level of unbalance between the RMS values of the three phase currents avg l4 m From l avg is the average value of the rms currents of the three phases 11 12 13 3 max is the maximum difference between the current of each phase and avg m Micrologic H uses the two values above to calculate the current unbalance E max lavg unbal Maximum current protection per phase Imax m Protection values may be set for each of the following currents max maximum current on phase 1 12 max maximum current on phase 2 I3 max maximum current on phase 3 IN max maximum current in the neutral m This function calculates the rms demand value of the current for the given phase 11 12 13 or the neutral IN over a sliding time interval The time interval is the same as that for the calculation of the demand currents in the Metering menu Settings are made in the Metering setup menu Note IN max protection does not take into accoun

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