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1. MM MOM MEME G MM MM ME MEME MEE MIELE MM 3 E 2000 707 unn or E 1 MEM u c c QI an P c E co ccc ML G ERREUR v 0 cM M mE m 0 LM 12 MNS SG Drawout Switchgear Manual V Mechanical Overview Enclosure MNS SG switchgear enclosure is NEMA 1 The enclosures are deadfront metal enclosed structures All front doors side panels and rear panels or doors are painted using electrostatic powder type paint Standard Features ANSI 61 paint color Barriers between breaker compartment anq bus compartment Barriers between bus compartment cable compartment Ground bus extensions Removable steel top plates over conduit entrance Cable wire trough Lifting eyes 1800 mm deep enclosure 70 9 in Available Options Vertical barriers in cable compartment Strip heaters and thermostats Overhead lift device Padlock provisions on breaker compartment doors Padlock provisions on rear doors Aluminum bottom plates Rear hinged doors Optional paint colors Arc Resistant Enclosure Features Plates equipped with pressure relief blow out flaps Optional plenum for direction of exhaust gasses created during arc fault Direction of plenum discharge customer specified Cable compartment flaps to block r
2. 24 Voltage IariSIot Tie een eph tes eque 24 Control power transformer r 24 uuu u ee 25 ____ 29 25 OOM Ol SWIM 25 Selector Switches rr 26 Test Switches PlugSs tot soa a nn 26 Space heaters thermostats humidistat 27 High Resistant Grounding Systems 27 Transfer Scheme 27 Emax Power Circuit Breakers 28 UCTS uuu u used 28 29 Breaker DetailsS rr 30 rade Deal uu Von eR Ya pads 30 Electronic Trip Unit Comparison 31 Electronic Mo Unit PR121 P u u u eva aa 33 Electronic Trip Unit PR122 P 36 Electronic Mo Unit PR129 P 31 Metering 45 CommunicationSs 46 Breaker Test 50 Breaker Test 51 Arc Flash Mitigation 52 REA RGO M __ 52 VU Lu anh 52 Ifrared WNdOWS 53 Layout Detail Dimensions and Breaker Ar
3. Low Voltage Metal Enclosed Drawout Switchgear Power and productivity A H H for a better world 2 MNS SG Drawout Switchgear Manual Table of Contents Product Description 4 es 4 5 MNS SG Arc Resistant e nem enc ee E ees 6 Arc Resistant Features 7 Standard v ac T Industry Standards 8 Systems Application 9 Technical Equipment Ratings 11 Mechanical Overview 13 13 Arc Resistant Non Arc Resistant Dr I 22 UT M 14 II nanus 14 BUS Dp uu 15 Horizontal and vertical 19 Bamers and COVEN 19 21 Os 21 ER 22 23 Overhead lifting device 23 ENTE 23 wes 23 VI VII VIII Electrical Overview 24 u E E
4. oe oe sss om 2 2 c EE ME HN T 54 MNS SG Drawout Switchgear Manual 2000 Dimensions and Minimum Width Ampacity 23 6 De th 70 87 2000 600mm 1 Arc Resistant top of plenum 122 1 3100 5mm 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire a n aru se 7 cuu oll 2 2 7 21 Qd 65KA 3Wire 100KA 3Wire 65 4Wire 100KA 4Wire EP Do A T 2 e s 5 A ae M X 2 ud n H 5 D OVE MCN MM quK NU MEME MEME QM 65KA 3Wire 100KA 3Wire 65 4Wire 100KA 4Wire Pe c 4 2 sss eina ers A M NU m u s 2 m m E 25 E eee c rd m cm 274 2 Note All Section types above Bus for 100 Manual MNS SG Drawout Switchgear 55 2500 3200A Dimensions and Breaker Arrangement Minimum Width by Ampacity Arc Resistant w overhead lifting device 99 4 2524mm 31
5. Alarm LED when the temperature is higher than 85 C temperature above which the microprocessor can no longer guarantee correct operation and when decided during the unit configuration stage simultaneous opening of the with indication of the trip directly on the display as for the other protections Zone selectivity for protections S and G Zone selectivity is one of the most advanced methods for making co ordination of the protections by using this protection philosophy it is possible to reduce the trio times of the protection closest to the fault in relation to the times foreseen by time selectivity of which zone selectivity is an evolution 38 MNS SG Drawout Switchgear Manual Zone selectivity is applicable to protection functions S and G even contemporarily and is available as standard the PR122 The word zone is used to refer to the part of an installation between two circuit breakers series see figure to the left Protection is provided by connecting all of the zone selectivity outputs of the releases belonging to the same zone together and taking this signal to the zone selectivity input of the release immediately to the supply side Each circuit breaker that detects fault communicates this to the circuit breaker on the supply side using a simple connection wire Therefore the fault zone is the zone immediately to the load side of the circuit breaker that detects the fault
6. 10 to 100 Degrees Fahrenheit Humidistat controllers are also available High Resistance Grounding Systems High resistance grounding provides the same fault protection advantages as ungrounded systems but unlike ungrounded systems it limits the steady state and severe transient overvoltages associated with ungrounded systems The protective scheme associated with high resistance grounding is usually detection and alarming rather than immediate trip out High resistance grounding usually does not require immediate clearing of a ground fault since the fault current is limited to a very low level High resistance grounding systems are available in MNS SG Space requirements include an available instrument compartment and mounting space for the grounding resistor banks Mounting and layout restrictions are dependent on the system ampacity and incoming mains arrangement Transfer Scheme Transfer schemes can be achieved either manually with breaker interlocks or automatically Automatic transfer systems are often used to minimize the duration of power interruptions by transferring the load from the normal source to an alternate source when the normal source fails or is temporarily unavailable Typical MNS oG automatic transfer logics are performed via the use of relay logic In automatic transfer schemes there is a need to provide electrically operated breakers on the incoming sources Certain loads or plant processes may d
7. Area for cable entrance Manual MNS SG Drawout Switchgear 59 MNS SG Switchgear Floor Plans 70 87 1800 mm Depth COVER PLATES DRILLING DETAILS TOP PLATES 1 4 in 1 41 mm 48 4 mm CABLE COMPARTMENT CABLE COMPARTMENT eS 3756 In 39 exa 1745 1 8 2 393716 1200 mo 13 26 In 243 2 e 37 1000 l 3123 793 2 ma D Effect a area cover pate for area on cover piste fer drilling 0 66 In 14 2 In 0 55 In We 6 m 36 2 mas BREAKER COMPARTMENT BREAKER COMPARTMENT x Effective area on cover plate lor drilling EZ arwa co cover plate for drilling 60 MNS SG Drawout Switchgear Manual MNS SG Arc Resistant Layout Restrictions Side View with Chimney Design MNS SG Arc Resistant Layout Restrictions Front View with Chimney Design Keep Area Free 10 391 3168mm M 4 3 00ft 3 004 815mm Min 815mm Min TET uu utt pat 62 MNS SG Drawout Switchgear Manual MNS SG Arc Resistant Layout Restrictions Front View with Plenum Design MNS SG Arc Resistant Layout Restrictions Top View with Plenum Design 3 00ft 915mm Min Safety Zone 34 1065mm Min 00ft 3 008 13 008 1830mm Min 915mm Min 915mm Min 64 MNS SG Drawout Switchgear Manual MNS SG Arc Re
8. but does not receive any communication from those on the load side This circuit breaker opens without waiting for the set time delay ABB SACE provides important calculation tools to facilitate the work of designers in coordinating protection devices including the Slide rule kits DOCWin and CAT software packages and updated coordination charts The zone selectivity function S and G can be activated or deactivated using the keyboard oelf diagnosis The PR122 range of releases contains an electronic circuit which periodically checks the continuity of internal connections opening solenoid or each current sensor including the Source Ground Return when present In the case of a malfunction an alarm message appears directly on the display The Alarm is highlighted by the Alarm LED as well Residual Current Different solutions are available for integrated residual current protection The basic choice is PR122 P LSIRc which has all the characteristics of PR122 P LSI and residual current protection as well When additional features are required the solution is PR122 P LSIG with an additional PR120 V module see next paragraph Using this configuration residual current protection is added to a powerful unit having the features of PR122 P LSI and all the add ons described for the PR120 V module such as voltage protection and advanced measurement functions Residual current protection acts by measuring the current from the external
9. protection Overvoltage OV protection Residual voltage RV protection Reverse power RP protection Under frequency UF protection Over frequency OF protection Phase sequence alarm only All the above indicated protections can be excluded although it is possible to leave only the alarm active when required With the circuit breaker closed these protections also operate when the release is self supplied With the circuit breaker open they operate when the auxiliary power supply 24V DC or PR120 V is present in this case the release will indicate the ALARM status Voltage protections UV OV RV With the PR120 V module the PR122 P release is able to provide the under voltage and overvoltage protection UV OV and the residual voltage protection RV The residual voltage protection RV identifies interruptions of the neutral or of the earthing conductor in systems with earthed neutral and faults that shift the star center in systems with insulated neutral e g large earth faults The star center shift is calculated as a vectorial sum of the phase voltages Reverse power protection RP Reverse power protection is especially suitable for protecting large machines such as motors and generators The PR122 with the PR120 V module can analyze the direction of the active power and open the circuit breaker if the direction is opposite to that of normal operation The reverse power threshold and the trio tim
10. 0 66 lt I1 lt 1 eon os a a sms s eee S E EEA 7177 0 80 2 S K 777177777 U 7777 The setting 11 1 indicates the maximum overload protection setting The actual maximum setting allowable must take into account any derating based on temperature the terminals used and the altitude see the Installations chapter 1 When three pole circuit breakers with external neutral current censor are used a setting above 10096 for the neutral does not require any reduction in the L setting up to lu N Manual MNS SG Drawout Switchgear 37 Phase protection U Protection function U against phase unbalance is useq in those situations requiring particularly precise control over missing and or unbalanced phase currents only giving the pre alarm signal This function can be excluded Protection against over temperature The range of SACE PR122 releases allows the of abnormal temperatures which could Cause temporary or continuous malfunctions of the microprocessor to be signaled to the user The user has the following signals or commands available lighting up of the Warning LED when the temperature is higher than 70 C temperature at which the microprocessor is still able to operate correctly lighting up of the
11. 4 9 2 x 1 4 x 4 1000 S 700 800 2500 4 1 4 x 4 rg 4x 1 4 x 4 1000 Section Size of Lug Width Vertical Runback Number of Lugs Connecta 600 700 d dut 2 X 3 8 X 4 6 2 X 3 8 X 4 800 1000 Ruaback Number of Size of Lug Lugs Connector 6 x 1 4 x 4 9 1 4 x 4 aration Vertical Runback Number of Lugs Size of Lugs Width 4000 4 x 3 8 xb 11 4x 9 8 x 5 5000 2 1 4 x 5 4 x 39 8 x5 14 2 x 1 4 x 5 4 x 3 8 x 5 22 MNS SG Drawout Switchgear Manual Nameplates MNS SG nameplates meet all standards listed in ANSI C37 20 1 Precautionary labels meet ANSI 253 4 Standard nameplates for devices are white background with black lettering phenolic screwed on type Other optional nameplates are available upon request The main system nameplate is stainless steel and secured with self tapping screws All lettering is engraved The following information is available on switchgear assembly nameplates Overhead Lifting Device As an option the ABB MNS SG can be provided with a mounted hoist installed on top of the switchgear for lifting the breakers into and out of the circuit breaker compartments The overhead lift device is shipp
12. PR123 only D 32 MNS SG Drawout Switchgear Manual Electronic Trip Units PR121 P PR121 P is the basic and complete release for the Emax circuit breaker series ne complete range of protection functions together with the wide combination of thresholds and trip times offered make it suitable for protecting a wide range of alternating current L ALLIT I 5 F bat GN PP PN 7 E b n G i I T EE 18 9 Legend 1 LED signaling Alarm for protection Function L 2 LED signaling Alarm for protection function S 3 LED signaling Alarm for protection function 4 LED signaling Alarm for protection G function 11 5 DIP switches for fine setting current threshold l1 6 DIP switches for main setting current threshold 11 switches for setting current threshold 12 8 DIP switches for setting current threshold I3 9 DIP switches for setting current threshold l4 10 DIP switches for setting trip time t1 type of curve 11 DIP switches for setting trip time t2 type of curve 12 DIP switches for setting trip time t4 type of curve 13 Indication of the DIP switch position for network frequency 14 Indication of the DIP switch position for Neutral protection setting 15 Rating plug installation In addition to protection functions the unit is provided with multifunction LED indicators Furthermore PR121 P allows connection to external
13. breaker Particularly in ring distribution systems this makes it possible to identify and disconnect the distribution segment where the fault has occurred while keeping the rest of the installation running If multiple PR122 or PR123 releases are used this protection can be associated with zone selectivity Dual setting of protections Maintenance Switch PR123 P can store an alternative set of all the protection parameters This second set set B can replace when needed the default set set A by means of an external command The command can be given typically when network configuration is modified like when a parallel of incoming lines is closed or when an emergency source is present in the system changing load capability and short circuit levels The set B can be activated by Digital input provided with PR120 K module For example It can be connected to an auxiliary contact of a bus tie Communication network through PR120 D M i e when the changeover is scheduled Directly from user interface of PR123 P An adjustable time internal after closing of the circuit breaker Electronic Trip Units PR123 P Protection functions The PR123 release offers the following protection functions Overload L 1 Selective short circuit S Instantaneous short circuit 1 Earth fault with adjustable delay G Directional short circuit with adjustable delay D Phase unbalance U Protection against over t
14. coat paint The completed finish has anominal 2 6 mils dry film thickness The process includes cleaning any grease or deficient phosphate rinsing Spray coating oven drying electrostatic powder spray paint coating and oven baking Auxiliary Compartments Auxiliary compartments are available to mount additional devices such as but not limited to voltage transformers control power transformers metering and supervisory devices Internal compartments are also available for mounting of terminal blocks for customer use and internal use Breaker devices such as indicating lights control switches and specified meters are mounted in the breaker compartment door as a Standard Due to space limitations the use of an auxiliary compartment may be required Spare customer terminal points can be located in the front of the gear in an auxiliary compartment or in the breaker compartment Number of spare terminal points may impact overall equipment layout dimensions Manual MNS SG Drawout Switchgear 21 Lug Assemblies Cabled customer may made usino either compression or mechanical lugs the size and quantity of which are dependent on the connection ampacity See tables below E2 Breaker connection table Vertical Runback Width Coupling 1200 1600 Size of Lug Connector Sr cton Breaker Contt Current Vertical Runback Number of Lugs vue or Width Connector 700 800 1800 2 1 4 x
15. devices enhancing its advanced characteristics like remote signaling and monitoring or remote supervision display 116 17 6 457 1 2 10 11 20 21 26 15 SACE 22 13 23 14 25 16 Indication of the DIP switch positions for the various current thresholds values 11 17 Indication of the DIP switch positions for the various current threshold values 12 18 Indication of the DIP switch positions for the various current threshold values 19 Indication of the DIP switch positions for the various current threshold values 14 20 Indication of DIP switch positions for the various time settings t1 21 Indication of DIP switch positions for the various time settings t2 22 Indication of DIP switch positions for the various time settings t4 23 DIP switch for setting network frequency and neutral protection setting 24 Trip cause indication and trip test pushbutton 25 lest connector for connecting or testing the release through an external device battery unit BTO3O wireless communication unit and SACE PRO10 T unit 26 Serial number of protection release Manual MNS SG Drawout Switchgear 33 Electronic Trip Units PR121 P Operation and protection functions PR121 release offers the following protection functions overload L selective short circuit S instantaneous short circuit l Earth fault G Overload L The inverse
16. for internal wiring between sections and shippino splits as well as customer control wiring The top wireway is 100mm high and the bottom wireway is 150mm high Wireway doors are secured with quarter turn latches E Barriers Covers and Doors Side covers and rear covers consist of a three piece design of 14 gauge galvanized steel secured by self tapping torque head screws Rear panels are provided with lifting handles and standard finish paint As an option a hinged door with a three point latch system is available Double doors are used for 800mm and 1000mm width sections Rear covers and doors on the MNS SG are provided with ventilation slots which allow for heat rise ventilation For the Arc Resistant switchgear option self closing flaos are provided inside the rear cover door These flaps block off the ventilation slots and prevent the exit of gases and fire in the event of an arc fault inside the gear Front doors Circuit breaker and equipment compartments doors are provided with 14 gauge individual doors with removable hinges Breaker compartment doors are provided with cutouts Cutout gasketing is provided as a standard for non arc resistant switchgear lineups but is removed in the arc resistant option Door latches are provided in non arc resistant switchgear and a reinforced three point latch with locking handle is provided in the arc resistant option All compartment doors are provided wi
17. fuse clips Current Transformers Current transformers are available for mains ties feeders Standard current transformers are meterino class rated for 600V BIL full wave frequency response 50 400Hz Available current transformer ratios are 800 5 1200 5 1600 5 2000 5 2500 5 3200 5 4000 5 and 5000 5 Relays Control relays ANSI protective relays and programmable relays specific to the switchgear application may be installed in MNS SG breaker and instrumentation compartments Spacing limitations apply consult your local ABB sales contact for pricing and availability Metering The MNS SG switchgear allows for installation of a variety of metering options Multifunction meters available as a standard are the Electro Industries Shark 100 or Shark 200 meter or Nexus 1500 meter Customer specified metering options are also available Analog switchboard meters such as ammeters voltmeters watthour meters power factor indicators etc are also available As a standard ABB supplies Crompton Series 77 meters for these applications As a standard all metering devices are provided with individual voltage protection by means of an ABB miniature breaker Breaker Control Switches When required electrically operated breakers can be Supplied with breaker control switches The standard offering is the Electroswitch Series 20 As an option the Electroswitch Series 24 is available Optional nameplates w
18. has the capability of being bolted together to form a single assembly Lifting angles horizontal wired door Rear doors or near covers Cable compariment UU Main h rtmantal bus Breaker compartment Botiom piel sssi 14 MNS SG Drawout Switchgear Manual Bus Bar System The bus bar system is installed in the middle compartment of the switchgear vertical sections and includes the main horizontal bus bar system with neutral bus when required vertical distribution bus bars and runback bus to link customer connections with circuit breakers ABB offers several options for Incoming connections including cable bus duct and close couple connections to transformers For cable incoming requirements ABB can accommodate top or bottom lugs For bus duct connections ABB offers a standard bus duct riser Close coupling connections to ABB dry type transformers are also available For other transformer connections ABB will need to provide a custom designed section All drawings of transformer connections will need to be provided at the time of quotation request Main bus bar The main horizontal bus bars are arranged in phase A B C order from top to bottom and are located at the bottom half of the vertical section When tie sections are installed the main horizontal bus bars are also provided in the top half of the vertical section For four wire systems a neut
19. long time delay trio overload protection L is type l t 25 current thresholds and 8 curves are available Each curve is identified by the trip time in relation to the current I1 I1 set threshold Selective short circuit S The selective short circuit protection S can be set with two different types of curves with a trip time independent of the current t k or with a constant specific let through energy t 15 current M threshold lt in 05inz lt 0 8 in 4208 in Repression threshold 4 in In s rated current of the rating plug 34 MNS SG Drawout Switchgear Manual Em mem mmo SS 2 m mmm SS um um m mm m m thresholds and 8 curves are available allowing a fine setting Each curve is identified as follows for curves t k by the trip time for gt 12 for curves t 2 by the trip time for 10 In 2 rated current of the circuit breaker The function can be excluded by setting the DIP switches to the combination labeled OFF Adjustable instantaneous short circuit 1 The protection offers 15 trip thresholds and can be excluded dip switches in OFF position Ground fault G The ground fault protection G which can be excluded offers 7 current thresholds and 3 curves Each curve is identified by the time t4 in relation to current 14 As per o protection the trip time can be chosen independent of the curr
20. point door latches Heavy duty two point breaker door latches prevent door opening during and arc event even when originating in the breaker cell Internal Venting system allows ionized gas to flow into bus compartment from any location within the cabinet and out the top of the switchgear through hinged flaps NEMA 1 enclosure Up to 480V Q 100kA Unobstructed switchgear floor to ceiling height is 3 m 10 ft maximum ANSI Type 2B accessibility to protect the operator with the low voltage instrument compartment door open Floor plates Vertical Barriers between cable compartment sections Standard Features These features are found in both arc resistant and standard switchgear Modular C channel frame construction and optional arrangements oafety shutters prevent accidental contact with live bus on all breaker cradles with a padlock feature available to lock the shutters in the closed position for added safety Vented bus and cable compartment for proper air circulation Barriers between breaker and bus compartment and between bus and cable compartment Optional barriers available between cable compartment sections Interlocks to prevent racking the breaker while the main contacts are closed Ability to rack the breaker from the CONNECT TEST and DISCONNECT positions with the breaker compartment door remaining closed providing maximum convenience and personnel safety Breaker doors require n
21. than the total capacitance charging current 3 Ico Normally the ground fault current 10 is limited to 10 Amps or less although some medium voltage specialized systems may require higher ground fault levels The potential damage caused by an arcing current larger than 10 Amps in confined spaces makes the use of high resistance grounding on systems where the line to ground fault exceeds 10 Amps not advisable 10 MNS SG Drawout Switchgear Manual High resistance grounding provides the same advantages as ungrounded systems but unlike the ungrounded systems it limits the steady state and severe transient over voltages associated with ungrounded systems The protective scheme associated with high resistance grounding is usually detection and alarming rather than immediate trip out High resistance grounding usually does not require immediate clearing of a ground fault since the fault current 18 limited to a very low level 7 Low resistance grounding Low resistance grounding is mostly employed in medium voltage systems of 15 kV and below especially where large rotating machinery is used For large generators neutral resistor is usually selected to limit a minimum of 100 Amps up to a maximum of 1 5 times the normal rated generator current The resistor ohmic value is selected to allow a ground fault current acceptable for relaying The grounding resistor can be rated for intermittent duty In normal practice it is rated for 10
22. the arc chutes which is contained within the switchgear This has been verified in interruption tests The ability of the cabinet to withstand arc fault energy is verified by testing including short circuit and short time withstand tests on the equipment Interruption tests are conducted on the power circuit breakers The MNS SG arc resistant switchgear provides an added degree of protection over standard metal enclosed switchgear In addition to bolted faults ABB MNS SG low voltage switchgear is designed and performance tested to ANSI IEEE C37 20 7 Type 2B accessibility to provide protection from the hazards of internal arc faults The Type 2 designation indicates switchgear with arc resistant designs or features at the freely accessible exterior front back and sides of the equipment only The B suffix is designated for equipment where normal operation of the equipment involves opening the door or cover of compartments specifically identified as low voltage control or instrumentation compartments Optional Plenum Confirmed by Testing Arc resistant enclosures are designed to contain the arc forces under specified installation conditions Testing of the arc resistant switchgear was conducted using a variety of samples selected to represent worst case installation scenarios The selections focused on minimum unit volumes used for maximum sized components and the maximum values for unbraced doors and cove
23. time delay constant specific let through energy 12 t k required Protection against earth faults can also be obtained by connecting the PR122 release to an external toroid located on the conductor that connects the transformer star centre to earth homopolar toroid All the thresholds and trio curve delays of the protection functions are stored in special memories which retain the information even when no power is supplied SAGE PR122 P 5 7 6 6 Test connector for connecting or testing the release by means of an external device battery unit wireless communication unit and SACE PRO10 T unit 7 ENTER button to confirm data or change pages 8 Button to exit submenus or cancel operations ESC 9 Rating plug 10 Serial number of protection release Electronic Trip Units PR122 P Operation protection functions and self test Basic Protection functions The PR122 release the following protection functions according to the version overload L selective short circuit S instantaneous short circuit 1 earth fault G ohase unbalance U self protection against over temperature OT thermal memory for functions and 5 zone selectivity for functions S and G residual current Rc with external toroid source ground return with external toroid Setting the neutral In PR122 P and PR123 P as well the neutral protection is 50 of the value set for phase
24. with the unit must be used for this connection human machine interface takes the form of a touchpad and multi line alohanumeric display The unit also has two LEDs to indicate respectively POWER ON and STAND BY battery charge state Two different types of test are available automatic for PR121 PR122 and PR123 and manual By connection to a PC using the floppy disc supplied by ABB it is also possible to upgrade the software of the PRO10 T unit and adapt the test unit to the development of new products is also possible to store the most important results in the unit itself and to send a report to the personal computer with following information type of protection tested threshold selected curve selected phase tested test current estimated trip time measured trip time test results At least 5 complete tests can be stored in memory The report downloaded onto a PC allows creation of an archive of tests carried out on the installation In automatic mode the PRO10 T unit is capable of testing the following with the PR122 range protection functions L G protection function with internal transformer G protection function with toroid on the transformer star centre Monitoring of correct microprocessor operation The unit can also test the following protections of the PR122 equipped with the PR120 V Over voltage protection function OV Under voltage protection
25. 2 applications using a Bluetooth from among five available options Italian English port and can be transferred to any personal computer German French and Spanish As in the previous for elaboration The function freezes the recording generation of releases a password system is used whenever a trip occurs so that a detailed analysis to manage the Read or Edit modes The default of faults can be easily performed SD Pocket and password 0001 can be modified by the user The TestBus2 allow also reading and downloading of all the protection parameters curves and trip thresholds others trip information can be set directly via the HMI of the device The Number of channels 8 parameters can only be changed when the release 15 Maximum sampling rate 4800 Hz operating in Edit mode but the information available Maximum sampling time 27 s sampling and the parameter settings can be checked at any rate 600 Hz time in Read mode When a communication device 64 events tracking internal PR120 D Mand PR120 D BT modules or external device is connected it is possible to set parameters simply by downloading them into the unit over the network for PR120 D M by using the SD Pocket software and a PDA or a notebook for PR120 D BT Parameterisation can then be carried out quickly and automatically in an error free way by transferring data directly from DocWin Indicator LEDs LEDs on the fro
26. 23 ABB 2 position changeover switch 4 pole with pad lockable handle in both positions Part number ON8PZBS18138 24v DC Timer Infrared Windows Infrared windows shall be available to be installed in the switchgear rear covers to facilitate the use of IR cameras for thermally scanning cable terminations The use of the IR windows shall minimize the exposure to live conductors while performing this type of preventative maintenance inspection Quantity and location of the IR windows shall be dependent on the breaker stacking arrangement Structural Integrity Unique design bolts through the panel in eight positions through patent pending oversized stainless steel reinforcing plate to ensure seal to flat Surface even in the event of panel distortion Impact Resistant Proprietary design compatible with IEEE ANSI and UL standards for impact resistance of inspection optics on electrical applications Larger Viewing Area Square aperture results 2896 to 5596 more viewing area compared to similar sized round inspection windows Ease of Use Patent pending hinged cover with spring loaded captive bolts for one handed access otable Transmission Optic material unaffected by moisture humidity vibration and high frequency noise Warranted against transmission loss Standards Compliant Complies with NFPA 70 7463 mandates to maintain equipment in an enclosed state while energized unlike an open port design Manual MN
27. 500A Feeder Bus if no CT s are Tie Breaker required in E3 2500A Feeder Bus 25004 Feeder Bus 25004 Feeder Bus 2500A Feeder if no CT s are required no CT s are required no CT s are required Bus if no CT s Tie Breaker in Tie Breaker x in Tie Breaker required in 58 MNS SG Drawout Switchgear Manual MNS SG Switchgear Floor Plans 70 87 1800 mm Depth CABLE ENTRY PLAN TOP PLAN PLAN 18 21 089 ma 5715399 ma D E z G 1181 9 300 mm FRONT FRONT Width 1 ___ 9 60 In 500 mm 224 n 57 e 1 54 In 344 mm 14 57 In 294 mm m 421 in 107 me 17 58 In 324 mm 15 5115 27 56 In 700 mem amp 18 n 157 man 21 42 In 544 mem 18 45 Dn 494 mal 31 5 1n 800 amp 15 207 me 25 35 In es mem 23 39 In 593 mm 9 37 In 1000 me 12 09 In 307 mes 3 23 In 944 mm 31 26 In 794 mmi gt Space Dr uniti an obstruction after 4 7407 120 5 0 98 In 25 mm Space tor cating unti m obstruction after 5 5 3m D space for cabling until an obatrucbon after 6 04 In 152 3 mm andy when having Circuit Breder or Aum Compartmen WW section for Ecke cover iae fer delia
28. Depth x Saa erat passa 2500A 3200A x 70 87 Arc Resistant top of plenum 122 1 3100 5mm 800mm I au I EE 1800mm Non Arc Resistant top of chimney 95 92 2436 4mm Non Arc Resistant w overhead lifting device 99 4 2524mm Section Main 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire Location 2500A Feeder Not Applicable Not Applicable ss sun s na 2ODDA Cs s s sn tiia erii 2 Mainwhenin Feederin Location i Location Location B 25004 Feeder and C Not Applicable Not Applicable x is Location C x 3200A Main when in Location C Location 2500A Feeder 3200A A B Main 2500 3200A Main is Location B Feeder in Location A 3200 REA B Location D 2500A Feeder Not Applicable 65KA 3Wire 100 3Wire 65KA 4Wire 100KA 4Wire Location A 2500A Feeder 2500A Feeder 2500A Feeder 2500A Feeder Location B 2500A Feeder 2500A Feeder 2500A Feeder 2500A Feeder Location C 3200A Main 3200A Main lupa am E 3200A Tie MD T EE 3200A Tie Location D 2500A Feeder 2500A Feeder 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire Location A 2500A Feeder N A N A CP Rr KT ERREUR 3200A Main prc c L
29. E RUM M ME CHE 22222222 MM u a u Z SEM IM UM S s Gs ee uns R n er n nn renee nee a s NM 00000000002 rw MM Mu NM HE uc 7 NM 300 Manual MNS SG Drawout Switchgear 67 Contact us USA ABB Inc Low Voltage Products amp Systems 3700 W Sam Houston Pkwy S Houston TX 77042 Toll Free 1 888 385 1221 ABB Inc Low Voltage Products amp Systems 400 Crown Colony Drive Suite 303 Quincy MA 02169 www abb us lowvoltage Canada ABB Inc Low Voltage Products amp Systems 2117 32e Avenue Lachine QC H8T 3J1 Tel 1 514 420 3100 Toll Free 1 800 567 0283 Fax 1 514 420 3137 lvs rfq ca abb com ABB Inc Low Voltage Products amp Systems 201 Westcreek Blvd Brampton ON L6T 5S6 Tel 1 905 460 3000 Fax 1 905 460 3395 ABB Inc Low Voltage Products amp Systems 110 4411 6th Avenue S E Calgary AB T2G 4E8 Tel 1403 278 7111 Fax 1 403 278 8232 www abb ca lowvoltage Mexico ABB Mexico S A de CV Low Voltage Systems Av Central No 405 Parque Logistico C P 78395 San Luis Potosi SLP Tel 52 444 8708 000 Power and productivity for a better world PA While care has been taken ensure that the information contained in this publication is correct no responsi
30. M MO DE RC 5 Terminals Mechanical device to signal circuit breaker ___ ______ _ SNALAIA N Ta 7 open O and closed I 6 Contacts signaling the circuit AS OSO O iS connected isolated for test racked out 8 Signal for springs charged or discharged m n 7 Sliding contacts 9 Mechanical indication of trip Ta ETIE TEET Lal s Padlock device for safety shutters on 10 Key lock in open position KISS nu c MEM I request T Key OGK aus padlock in Fixing points 4 for E1 E2 and 6 for out position for drawout version only 9 Racking in racking out device for draw Out version only Circuit breaker position indicator connec 15 i ted isolated for test racked out for draw out version only 30 MNS SG Drawout Switchgear Manual Electronic trip units UL Versions available General characteristics of the electronic trip units Operation without the need for an external power supply microprocessor technology high precision interchangeability among all types of trip units setting for neutral configurable OFF 50 100 200 of phase setting for circuit breakers E2 E3 and E4 f protection full size versions and E4 E6 with external neutral OFF 50 for standard E4 and E6 The main performance features of the trip units a
31. Rated Up to 38kv for Internal Breakers Used in Enclosures Arcing Faults ANSI C37 50 Test Procedure for Low Voltage Power Circuit Breakers Used in Enclosures ANSI C37 51 Conformance Testing of Metal Enclosed Low Voltage AC Power Circuit Breaker owitchgear Assemblies Seismic Qualification to IBC 2009 and ASCE7 10 8 MNS SG Drawout Switchgear Manual System Application Ground Fault Schemes 1 Ungrounded systems a An ungrounded system is one that has no intentional connection between the system conductors and ground However the ungrounded system is in fact a capacitance grounded system This is because there always exists a Capacitive coupling between system conductors and ground The capacitance between phases has minimal influence on the grounding characteristics of the system and therefore it can be neglected For practical purposes the distributed capacitive reactance to ground Xco is considered to be balanced b One major disadvantage of the ungrounded system is the occurrence of destructive transient over voltages throughout the system during re striking ground faults These over voltages are the result from a resonant condition between the inductive reactance of the system and the distributed capacitance to ground c It has been proved that these over voltages may cause failure of insulation at multiple locations in the system especially at motors The solution to the problem of transie
32. S SG Drawout Switchgear 35 Electronic Trip Units PR122 P The SACE PR122 release is a sophisticated and flexible protection system based on a state of the microprocessor and DSP technology Fitted with the optional internal PR120 D M dialogue unit PR122 P turns into an intelligent protection measurement communication device based the Modbus protocol The new PR122 P is the result of ABB SACE s experience in designing protection releases exhaustive range of settings makes this protection unit ideal for general use in any type of installation from distribution to the protection of motors transformers drives and generators Access to information and programming using a keyboard and graphic liquid crystal display is extremely simple and intuitive The interface is now common to PR122 P and PR123 P in order to give to the user maximum ease of use Legend 1 LED Warning indicator 2 Alarm LED 3 Rear lit graphic display 4 Cursor UP button 5 Cursor DOWN button 36 MNS SG Drawout Switchgear Manual K 7 B Ses An integrated ammeter and many other additional features are provided over and above the protection functions These additional functions can be further increased with addition on board of the dialogue signaling measurement and wireless communication units Functions S and G can operate with a time delay independent of the current t k or with an inverse
33. S SG Drawout Switchgear 53 IX Layout Details 1600A 2500A Dimensions and Breaker Arrangement Minimum Width by Ampacity 27 6 1 Depth 70 87 1600A 2500A 700mm 1800mm 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire in Dd o i m T E Lo p 12 P T 2 ee P 4 DA 1 5 i 2 22 LER s e E rm n aii Mp ME W p mE ines pom note 1 when main is in Location B Location C can have a 1600 2000 Feeder and when main is in Location C Location B can have a 1600 2000 Feeder note 2 when main is in Location B Location C can have 1600A 2000A Feeder and when main is in Location C Location B can have a 1600A 2000A Feeder oection Type Tie 65KA 3Wire 100KA 3Wire 65 4Wire 100KA 4Wire ERA MEE TN FADA ORUM MN SUN om ON ORIS MEN cm vd P MEAN AME wm om m 0 m 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire pm 4 ar UN T TA 2 P m M 2 UMP RUM OMM w mes HUM ED m 4 UU
34. a potentially dangerous level but is quickly and safely interrupted by the protective devices in place including relays breakers and fuses Unfortunately these protective devices don t detect and therefore can t interrupt the internal arc faults that have lower current levels but can still create a dangerous and potentially deadly event These internal faults may be the result of the degradation of insulation insulation contamination animals or debris contacting the energized bus ora multitude of other conditions that provide the path for an electrical discharge through the air During an arc fault the voltage at the site of the fault is equivalent to the system voltage The energy is focused within the switchgear cabinet generating temperatures as high as 19 500 C 35 000 F hot enough to damage or destroy equipment and cause serious injury even at a distance The blast produced by 480 V AC switchgear rated at 85 kA is equivalent to 9 5 kg 20 7 pounds of TNT Internal arc faults occur within milliseconds but have tremendous destructive potential ionized gases generated by the arc create a conductive path between the opposite polarities and or ground The arc typically continues until interrupted by the circuit breaker or other protective device severity of the blast pressure is dependent on the magnitude and duration of the fault current Manual MNS SG Drawout Switchgear 5 5 5 Arc Resistant S
35. ad protection L With the PR123 unit the overload protection L includes the option to adjust the slope of the protection curve This adjustment allows perfect coordination with fuses or with medium voltage protection systems Double selective short circuit protection S In addition to the standard S protection PR123 P makes contemporarily available a second time constant S protection excludible that allows two thresholds to be set independently achieving an accurate selectivity even under highly critical conditions Double earth fault protection G While in PR121 P and PR122 P the user must choose among the implementation of G protection through internal current sensors calculating the vectorial sum of currents or external toroid direct earth fault current measuring PR123 P offers the exclusive feature of the contemporaneous management of both 42 MNS SG Drawout Switchgear Manual the configuration by means of two independent earth fault protection curves The main application of this characteristic is simultaneous activation of restricted and unrestricted earth fault protection Directional short circuit protection with adjustable delay D The protection works in a similar way to the fixed time protection 5 with the added ability to recognize the direction of the phase s current during the fault period The current direction makes it possible to determine whether the fault is on the supply or load side of the circuit
36. ay to the fixed time protection S with the added ability to recognize the direction of the phase s current during the fault period The current direction makes it possible to determine whether the fault is on the supply or load side of the circuit breaker Particularly in ring distribution systems this makes it possible to identify and disconnect the distribution segment where the fault has occurred while keeping the rest of the installation running If multiple PR122 or PR123 releases are used this protection can be associated with zone selectivity Dual setting of protections Maintenance Switch PR123 P can store an alternative set of all the protection parameters This second set set B can replace when needed the default set set A by means of an external command The command can be given typically when network configuration is modified like when a parallel of incoming lines is closed or when an emergency source is present in the system changing load capability and short circuit levels set B be activated by Digital input provided with PR120 K module For example It can be connected to an auxiliary contact of a bus tie Communication network through PR120 D M i e when the changeover is scheduled Directly from user interface of PR123 P An adjustable time internal after closing of the circuit breaker Manual MNS SG Drawout Switchgear 43 Zone selectivity function The zone selectivit
37. bar location must be returned to the bottom half of the section using an upper to lower main bus bar transition section installed adjacent to the tie breaker section ace Configuration Section Width mm Current x 2 ll 544 ae e D Eas 5 2 25 m ul 1 2 M E 5 MAE 2 E Ground Bus Bar System The ground bus bar system is comprised of four components Vertical ground bar located in main bus bar compartment full and bottom half lengths available 18 MNS SG Drawout Switchgear Manual Breaker grounding links bused connection links from breakers to vertical ground bar Lateral ground bar links vertical ground bar to cable compartment contains pre drilled holes on cable compartment end for customer grounding connections Transverse ground bar located in cable compartment for section to section interconnects LITER T nere TAA AA i 1 VE 1 An j i PIN X 4 T 1 4 SUM L J a 5 i PA k pi aM j See 1 r vL d LS Y W 7 4 f F i Ground bus bar system is available with silver plating tin plating or bare no plating Wireways Wireways are located at the top and bottom otf the MNS SG sections These wireways are provided both
38. bility can be accepted for any inaccuracy The Company reserves the right to alter or modify the information contained herein at any time in the light of technical or other developments Technical specifications are valid under normal operating conditions only The Company does not accept any responsibility for any misuse of the product and cannot be liable for indirect or consequential damages Copyright 2012 ABB Inc All rights reserved 210 490001 Effective 08 16 2012 Subject to change without notice
39. cation E settings All possible combination of device address and baud rate are checked A click on scan is enough to spot devices which are not responding have wrong addresses mis configured parity bits and so on This function 18 not limited to ABB SACE devices All standard Modbus RTU devices are detected and their configuration is displayed After the scan the software displays warning messages about potential problems and configuration errors allowing complete diagnosis of a field bus network When ABB SACE circuit breakers are detected la additional functions can be used to check wirings send open close reset commands and retrieve diagnostic information This user friendly tool makes commissioning of Modbus networks a breeze TestBus2 is freeware and can be downloaded from the BOL website http bol it abb com PR120 D M Communication Module PR 120 D M communication module is the solution for connecting Emax to a Modbus network allowing the remote supervision and control of the circuit breaker It is suitable for PR122 P and PR123 P trip units As for PR120 V this module can be added at any time to the protection trip unit and its presence is automatically recognized When ordered separately from the circuit breakers it is supplied complete of all the accessories needed for its installation such as pre cabled auxiliary switches and cables for signaling the circuit breaker status spr
40. dedicated toroid Test Functions Once enabled from the menu the info Test Example of events indicated by the ALARM LED pushbutton on the front of the release allows correct overload may begin from 1 05xl1 lI 1 3xl1 in operation of the chain consisting of the microprocessor accordance with the standard IEC 60947 2 opening solenoid and circuit breaker tripping timing of function L mechanism to be checked timing of function S control menu also includes the option of testing timing of function G correct operation of the display signaling LEDs and second temperature threshold exceeded 85 C electrical contacts of the PR120 K release By means contact wear 10096 of the front multi pin connector it is possible to apply a timing of Reverse Power flow protection SACE Test unit which allows the functions of with optional PR120 V the PR121 PR122 and PR123 ranges of releases to be tested and checked Data logger By default PR122 P well as PR123 P is provided User interface with the Data Logger function that automatically The human machine interface HMI of the device is records in a wide memory buffer the instantaneous made up of a wide graphic display LEDs and browsing values of all the currents and voltages Data can be pushbuttons The interface is designed to provide easily downloaded from the unit by means of SD maximum simplicity The language can be selected Pocket or TestBus
41. dustrial networkino The communication network can be all information available in the protection release from any location connected to the bus and in real time Circuit breaker status closed open opened by protection release trip All values measured by the protection release RMS currents voltages power power factor and so on Alarms and pre alarms from protection release e g overload protection alarm timing to trip pre alarm warning Fault currents in case of circuit breaker opening on a protection trip Number of operations performed by the circuit breaker with indication of the number of trips per protection type short circuit overload etc 46 MNS SG Drawout Switchgear Manual Complete settings of the protection release Estimate of the residual life of circuit contacts calculated on the basis of interrupted currents Remote control of circuit breakers is possible Commands to open close and reset alarms can be issued to the circuit breaker and protection release Close commands are executed only after a security check e g that there are no diagnostic alarms active on the release is also possible to the settings of the protection release remotely by means of the communication bus All remote commands can be disabled by a local configuration feature for safety of operators and installation Circuit breakers with communicatio
42. e are adjustable Frequency protections UF OF The frequency protections detect the variation of network frequency above adjustable thresholds generating an alarm or opening the circuit breaker It is a protection typically needed in an isolated network i e powered by a genset Manual MNS SG Drawout Switchgear 45 Communications Industrial networking and Emax Circuit Breakers In addition to providing flexible and safe protection of power Installations ABB Emax electronic releases have an extended range of communication features which opens the way for connection of circuit breakers to the world of industrial communication PR122 and PR123 electronic releases can be fitted with communication modules which make it possible to exchange data and information with other industrial electronic devices by means of a network The basic communication protocol implemented is Modbus RTU a well known standard of widespread use in industrial automation and power distribution equipment A Modbus communication interface can be connected immediately and exchange data with the wide range of industrial devices featuring the same protocol ABB products featuring the Modbus protocol include Low voltage circuit breakers such as Emax Sensors Automation systems Power meters and other measurement devices Intelligent devices such as PLCs Operator interfaces Supervision and control systems The power of in
43. eactance grounding applies to the case in which a reactor is connected between the system neutral and ground Heactance grounding is usually employed in applications where there is a need to limit the magnitude of the ground fault current to a level that is relatively close to that of a three phase fault he use of reactors to provide this fault limitation is often less expensive than the use of grounding resistors if the desired current magnitude is of several kilo amperes Heactance grounded systems are not commonly employed in industrial power systems Manual MNS SG Drawout Switchgear 9 5 Resistance grounding Resistance grounding is the most effective method of solving transient over voltages The magnitude of the fault current is limited by the installation of resistance in the ground path In this type of system the neutral of the generator or transformer is connected to ground through a resistor The line to ground fault current is primarily limited by the high ohmic magnitude of the resistor as compared to that of the system reactance Based on the magnitude of the ground fault current permitted to flow resistance grounding may be either of two classes high resistance or low resistance 6 High resistance grounding As the term implies high resistance grounding employs a neutral resistor of high ohmic value The value of the resistor is selected to limit the current Ir to a magnitude equal to or slightly greater
44. ear ventilation ports during an arc fault Bottom plates provided as standard Section barriers in cable compartments Reinforced door handle mechanism replaces individual door latches Reinforced bus bar compartment barriers Manual MNS SG Drawout Switchgear 13 Structure Frame The MNS SG switchgear assembly consists of one The switchoear frame members consist of rigid or more enclosed vertical sections ends are galvanized steel C channel rails of 12 and 14 gauge designed to allow installation of future sections Each thickness with holes at 1 25 mm intervals The vertical section can contain up to four high individually frame members are secured with maintenance free self enclosed Emax power breakers One or more of tapping screws Corner joints are made using L shaped these compartments can be utilized as an auxiliary steel brackets and are also secured with self tapping compartment for mounting of instrument devices such screws Lifting eyes are provided as a standard on the as potential transformers control power transformers roof of the enclosure to allow lifting by the use of relays meters and other control devices crane The section is constructed in compartmentalized fashion Each vertical section consists of three compartments the breaker compartment front bus compartment middle and cable compartment rear A continuous wire tray is placed on top of the roof above the breaker compartment The structure
45. ed uninstalled from the gear Mounting instructions are provided Lift Truck Another available option to assist with the installation or removal of circuit breakers is a circuit breaker lift truck This can be used to lift and or lower the Emax circuit breaker in front of the switchgear The device may be used in place of an overhead lift device Shipping Design MNS SG Is shipped upright on removable skids in shipping splits that include up to three switchgear sections The width of the shipping split depends on the customer s specification the widest being 1800 mm 70 9 inches total width for a three section split The breakers are shipped installed in the section Equipment top components such as the overhead lifting device and plenum assemblies are shipped separately and intended for field installation Manual MNS SG Drawout Switchgear 23 VI Electrical Overview Wiring As a standard all switchgear wiring is 14 AWG SIS with ring tongue terminals As an option ABB can provide insulated locking fork terminals instead of ring tongue terminals Control wire for current transformers is 10 AWG SIS wire Potential transformers are provided with either 14 AWG SIS wire or 12 AWG SIS wire an option Control wire for a control power transformer up to 5kVA is 8 AWG SIS For larger control power transformers the appropriately sized wire is used Spare customer terminal points can be located the front of
46. emperature Load control Under voltaoe UV Overvoltage OV Residual voltage RV Reverse power RP Under frequency UF Over frequency OF Phase sequence alarm only In addition to PR122 P features the following improvements are available Overload protection L With the PR123 unit the overload protection L includes the option to adjust the slope of the protection curve This adjustment allows perfect coordination with fuses or with medium voltage protection systems Double selective short circuit protection S In addition to the standard S protection PR123 P makes contemporarily available a second time constant S protection excludible that allows two thresholds to be set independently achieving an accurate selectivity even under highly critical conditions Double earth fault protection G While in PR121 P and PR122 P the user must choose among the implementation of G protection through internal current sensors calculating the vectorial sum of currents or external toroid direct earth fault current measuring PR123 P offers the exclusive feature of the contemporaneous management of both the configuration by means of two independent earth fault protection curves The main application of this characteristic is simultaneous activation of restricted and unrestricted earth fault protection Directional short circuit protection with adjustable delay D The protection works in a similar w
47. ent t 2 k or with a constant specific let through energy t k l Note the function G is repressed for fault current values higher than the values shown in table below User interface The user communicates directly with the release in the trip parameter preparation stage by means of the dip switches Up to four LEDs according to the version are also available for signaling These LEDs one for each protection are active when a protection is timing For protection L the pre alarm status is also shown a protection has tripped the corresponding LED is activated by pressing the Info Test pushbutton a failure in connection of a current sensor or in the opening solenoid is detected The indication is active when the unit is powered through current sensors an auxiliary power Supply wrong rating plug for the circuit breaker The protection tripped indication works even with the circuit breaker open without the need for any internal or external auxiliary Dower supply This information is available for 48 hours of inactivity after the trip and is still available after reclosing If the query is made more than 48 hours later it is sufficient to connect a PRO3O0 B battery unit PRO10 T or a wireless communication unit Communication By means of the BTOSOwireless communication unit PR121 P can be connected to a pocket PC PDA or to a personal computer extending the range of infor
48. feeds a signal to an REA relay which verifies current change on the incoming main bus by the use of CT s If a change is detected by the relay along with a signal from the fiber optic cable the relay will then send a signal to the main breaker in the corresponding bus to trip therefore opening the corresponding bus Typical Diagram Devices 52 MNS SG Drawout Switchgear Manual Maintenance Switch The maintenance switch is used to manually change the circuit breakers Instantaneous protection settings to a preprogrammed set of values by means of a door mounted switch Application maintenance switch concept is used when the customer requires a faster tripping time when personnel are working in and around the switchgear The circuit breaker stores preset values Value A Normal and Value B Maintenance with regards to the instantaneous settings These values are determined by the customer and programmed into the circuit breaker trip unit Normal values are specified for regular operation of the switchgear Maintenance values are specified for when work is being performed on the switchgear The operation of the maintenance switch normal to Maintenance can be easily controlled from the front door by means of a switch 123 Trip Unit for the Emax circuit breaker PR120K4C signaling unit Blue indicating light to be blinking when in maintenance mode 24VDC power supply this is standard with PR1
49. function UV Residual voltage protection function RV Phase unbalance protection function U he PRO10 T unit is portable and runs on rechargeable batteries and or with an external power supply always supplied with a rated voltage of 100 240VAC 12VDC The standard version of the PRO10O T unit includes PRO10 T test unit complete with rechargeable batteries T1 test unit 100 240VAC 12VDC external power supply with cord Cables to connect the unit and PC 85232 serial User manual and compact disc containing application software Breaker Test Cabinet A breaker test cabinet is an optional feature that can be utilized to test the ABB Emax air low voltage circuit breaker Ihe standard test unit shall have indicating lights and a control switch that can be used to test the different functions of the breaker Manual MNS SG Drawout Switchgear 51 VIII Arc Flash Mitigation REA Relay System The REA arc protection relays minimizes material damage to switchgear enables quick restoration of the power distribution and guarantees improved personnel safety The REA detects an arc anywhere in the bus compartment and cable compartment utilizing long fiber sensor system The relay system concept is used when the customer requires protection on the equipment against an arc The REA system uses a fiber optic cable wired run through the bus compartment and cable compartment in order to detect an arc flash It then
50. g information Power ON auxiliary power supply present Int Bus flashing synchronized with dialogue with the Internal Bus Eight LEDs associated with the signaling contacts The table below lists the characteristics of the signaling contacts available in the PRO21 K unit opecifications of the signaling relays Auxiliary power supply x 24 V DC 20 Maximum ripple 56 a Rated power 24 V rase AN sss Type Monostable STDP Maximum switching power 100 W 1250 VA 22 2 resistive load QpM8Ximum switching voltage 130 V DC 250 VAC uu nS 30V DC 3 Oud JA RERO Q 250V Contact coil insulation Breaker Test Unit As an option ABB can provide a portable test unit for the Emax circuit breaker trip units The PRO10 T unit is an instrument capable of performing the functions of secondary injection testing programming and reading parameters for the trip units equipping Emax low voltage air circuit breakers In particular the test function involves the following units PR121P all versions PR122P all versions PR123P all versions whereas the parameter programming and reading functions regard the range of PR122 and PR123 trip units All of the functions mentioned can be carried out on board by connecting the SACE PRO10 T unit to the front multi pin connector on the various protection units Special interfacing cables supplied
51. ictate different scheme Manual MNS SG Drawout Switchgear 27 Vil Emax Power Breakers Refer to ABB Emax Power Breaker technical guide 1SDC200008D0202 dated 10 13 2011 for additional technical details Ratings he MNS SG is designed to accommodate up to four high drawout type Emax power circuit breakers Each circuit breaker is located in a completely enclosed ventilated compartment with top bottom and rear grounded steel barriers There are four available frame sizes that may be used E4 and The Emax power circuit breaker is available in various levels of interrupting ratings AIR as listed below Switchgear and Emax Power Circuit Breaker Interrupting Rating 2400 480V Circuit Frame Size Breaker Model 0 D 800 1200 1600 E2 S A 65 65 2000 2500 E3 S A 85 65 800 1200 1600 2000 E3 V A 100 100 3200 E4 S A 85 65 3200 4 100 100 4000 E6 100 85 4000 E6 100 100 5000 E6 100 85 5000 E6 100 100 x 600V Rated ime Time x me x current note current current max ms 2 kA max ms cycles cycles 65 65 70 42 30 1 8 65 65 70 4 2 30 1 8 85 85 70 4 2 30 1 8 65 65 70 4 2 30 1 8 85 85 70 4 2 30 1 8 85 85 70 4 2 30 1 8 85 85 70 4 2 30 1 8 85 85 70 4 2 30 1 8 85 85 70 4 2 30 1 8 Note 1 applies to Arc Resistant Rated Equip
52. ings position inserted It is provided with three LEDS on the front side Power LED Rx TX LEDs 48 MNS SG Drawout Switchgear Manual i h Measurement signaling and available data functions Details about functions available on PR122 P PR123 P trip units with PR120 D M are listed in the table below 122 123 PR120 D M PR120 D M 1 with PRO Manual MNS SG Drawout Switchgear 49 PR030 B power supply unit This accessory always supplied with the PR122 anq PR123 range of trip units makes it possible to read and configure the parameters of the unit whatever the status of the circuit breaker open closed in test isolated or racked in position with without auxiliary power supply PROSO B is also needed for reading trip data if the trip occurred more than 48 hours earlier and the trip unit was no longer powered An internal electronic circuit supplies the unit for approximately 3 consecutive hours for the sole purpose of reading and configuring data In relation to the amount of use battery life decreases if the PR030 B accessory is also used to perform the Trip test Auto Test PRO21 K signaling unit he PRO21 K signaling unit can convert the digital signals supplied by the PR121 PR122 and PR129 trip unit into electrical signals via normally open electrical contacts potential free The unit is connected to the protection t
53. ith LED s are also available Please refer to the layout section for restrictions 22 Series 20 Series 24 Manual MNS SG Drawout Switchgear 25 Selector Switches When selector switches are required such as for Auto Manual transfer schemes or Local Remote selection an ABB type cam switch is used as a standard Optional switches can be provided upon request 12 B NN IT Door thickness max 5 5 mm L 27x28 26 MNS SG Drawout Switchgear Manual Test Switches and Plugs As an option the ABB MNS SG switchgear allows the installation of ABB Flexitest FI 1 or FT 14 test switches or test plugs The test switch may be utilized for current transformer and potential transformer testing ABB provides shorting blocks for current transformers as a standard All Flexitest Switches meet or exceed all requirements of ANSI IEEE Standard C37 90 and are UL CUL and CSA listed The standard test switch cover is black and a clear cover is also available Space Heaters Thermostats Humidistat As a standard one space heater per section is provided and mounted in the main bus compartment Optional space heaters are available for mounting in the cable compartment Heaters are rated for a maximum of 250W at 240VAC and operated at 120VAC The heaters are mounted in a metal protective housing The thermostat utilized with space heaters has an operating range of
54. lineup 16 MNS SG Drawout Switchgear Manual Distribution bus bar systems The distribution bus bar is a system of vertical bus bars used for distribution of power to the device compartment electrical components circuit breakers The vertical distribution busbars are arranged in phase A B C order from left to right The vertical bus busbars are offered as silver plated standard with an option for tin plated Full distribution bus bar system This configuration is for at least one circuit breaker main or feeder in position A B or AB cubicle may include circuit breakers in positions C D or CD Continuous Current Configuration x Section Width mm Bottom distribution bus bar system This configuration is selected for a switchgear section with circuit breakers only in locations C D or CD It is not used when breakers are present in locations A B or AB Continuous Current Configuration Section Width mm Rus 5 4 1 3 s Manual MNS SG Drawout Switchgear 17 distribution bus bar system In tie breaker sections the distribution bus bar system is used in conjunction with the bottom distribution bus bar system In addition to the main bus bars in the bottom half of the section a second set of main horizontal bus bars is installed at the top half of the tie section When a tie section is installed the main bus
55. mation available for the user In fact by means of ABB SACE s SD Pocket communication software It is possible to read the values of the currents owing through the circuit breaker the value of the last 20 interrupted currents and the protection settings PR121 can also be connected to the optional external PRO21 K signaling unit for the remote signaling of protections alarms and trips and to for the remote user interfacing Setting the neutral Protection of the neutral can be set at 5096 10096 or 2009007 the phase currents Settings above 50 can be selected for E1 E2 E3 E4 f and In particular setting the neutral at 20096 of phase current requires protection L to be set at 0 511 in order to respect the current carrying capacity of the circuit breaker The user can also switch the neutral protection OFF When three poles circuit breakers with external neutral current sensor are used a setting above 100 for the neutral does not require any reduction in the L setting Test Function The Test function is carried out by means of the info Test pushbutton and the battery unit or BT030 fitted with a polarized connector housed on the bottom of the box which allows the device to be connected to the test connector on the front of PR121 P releases The PR121 P electronic release can be tested by using the SACE PRO10 T test and configuration unit by connecting it to the TEST connector Manual MN
56. ment Note 1 and 2 applies to Non Arc Resistant Rated Equipment 28 MNS SG Drawout Switchgear Manual Rating Plugs Emax Circuit Breaker Rating Plugs for Electronic Trip Units of Rated Ln x x x x x x circuit Current A 600 800 1000 1200 1600 2000 2500 3000 3200 3600 4000 5000 breaker lu 400 Manual MNS SG Drawout Switchgear 29 Details Cradle Details Construction Characteristics The Emax power circuit breaker offers a series of operating and signaling parts to minimize the risk of operational errors Draw out version 7 14 1 2 3 1 E 10 5 7 8 2 6 15 11 12 8 Caption Caption 1 Trademark and size of circuit 1 Sheet steel supporting structure 2 PR121 PR122 123 Trip units Single Grounding pilers mounted 3 i Pushbutton for manual opening 2 left for 2 and E3 double grounding OA MUS pilers for E4 and E6 4 Pushbutton for manual closing m ee eRe eT ee ee eT eee RCT eee ee MG M ae 3 Automatic Safety shutters 5 Lever to manually charge closing springs SC aa Qaakuysna re eer re eee 4 Terminal support base 6 Label with electrical characteristics osessseseeeheeeseseesee Mv9 MM eee MMMMMn 2 eene Voss Par eae CM
57. n can easily be integrated with automation and supervision systems Typical applications include Supervision of the installation with continuous data logging values of currents voltage and power event logging alarms faults trip logs Supervision can be limited to low voltage devices or include medium voltage and possibly other kinds of industrial apparatus Predictive maintenance based on number of operations of each circuit breaker interrupted currents and estimate of residual equipment life Load shedding and demand side management under control of PLC DCS or computers Communication products for ABB SACE Emax ABB SACE has developed a complete series of accessories for the Emax family of electronic releases SD Pocket SD Pocket is an application designed to connect the new protection releases to a PDA or to a personal computer This means it is now possible to use wireless communication to Configure the protection threshold function Monitor measurement functions including reading of data recorded in data logger PR122 PR1 238 Verify the status of the circuit breaker i e number of operations trip data according to the release connected SD Pocket application scenarios include During start up of switchgear with rapid and error free transfer of the protection parameters to the releases also using the dedicated exchange file directly from Docwin During normal installation service gathe
58. ng their need for equipment able to deliver reliable performance even under the mechanical electrical and thermal stress of today s manufacturing environment The MNS SG is designed to meet the most stringent industry requirements in a range of markets including Aerospace Critical Power and Data Centers Food and Beverage Health Care Marine Mining and Metals Oil and Gas Pharmaceutical Power Generation Semiconductor Manufacturing Steel Mill Utility and Co generation Water and Wastewater 4 MNS SG Drawout Switchgear Manual Arc Flash Dangers 70E defines an arc flash as a dangerous condition associated with the release of energy caused by an electric arc Independent studies have indentified low voltage LV metal enclosed switchoear as a leading contributor to electrical injuries LV switchgear often presents a unique challenge to factory personnel because of the variety of equipment in use and the relatively frequent maintenance required Internal arc faults in LV switchgear may result from improper operation or maintenance or adverse environmental conditions While the MNS SG can provide enhanced protection against arc flash hazard analyses are essential to determine the appropriate PPE level for technicians working in or near energized equipment Electrical equipment has traditionally been designed to withstand bolted faults incidents when the current spikes to
59. nt over voltages during re striking ground faults is to ground the system either solidly or by means of impedance 2 Grounded systems methods of grounding the system neutral can be divided into two general categories i Solid grounding ii Impedance grounding Impedance grounding may be further divided into several subcategories i Reactance grounding ii Resistance grounding Hesistance grounding may be either of two classes i High resistance grounding ii Low resistance grounding 3 Solid grounding oolid grounding is the connection of a conductor without any intentional impedance from the neutral of a generator power transformer or grounding transformer directly to ground oolid grounding is generally recommended for low voltage systems when the automatic isolation of a faulted circuit can be tolerated or where it is not feasible to isolate a ground fault in a high resistance grounded system oystems used to supply phase to neutral loads must be solidly grounded as required by the National Electrical Code NEC systems are 120 240 V single phase three wire 208Y 120 V three phase four wire 480Y 277 M three phase four wire oolidly grounded systems have the greatest control of over voltages but also have the highest magnitudes of ground fault current These high magnitude fault currents must be taken into consideration when designing the system 4 Reactance grounding The term r
60. nt panel of the release are used to indicate all the pre alarms WARNING and alarms ALARM A message on the display always explicitly indicates the type of event concerned Example of events indicated by the WARNING LED unbalance between phases pre alarm for overload L1 gt 90 first temperature threshold exceeded 70 C contact wear beyond 8096 phase rotation reversed with optional PR120 V Manual MNS SG Drawout Switchgear 39 Trip information and opening In case a trip occurs PR122 P and PR123 P store all the needed information Protection tripped Opening data current Time stamp guaranteed with auxiliary Supply or self supply with power failure no longer than 48h By pushing the info Test pushbutton the release shows all these data directly on display No auxiliary power supply is needed The information is available to user for 48 hours with the circuit breaker open or without current flowing The information of the latest 20 trips is stored in memory If the information can be furthermore retrieved more than 48 hours later it is sufficient to connect a PRO30 B battery unit or a wireless communication unit Load control Load control makes it possible to engage disengage individual loads on the load side before the overload protection L is tripped thereby avoiding unnecessary trips of the circuit breaker on the supply side This is done by mean
61. o additional ventilating louvers openings for proper air flow Emax 10096 rated 1066 circuit breakers Up to 5000A Provisions for padlocking Emax breakers in the CONNECT TEST and DISCONNECT positions for added safety Horizontal main bus using A B C top to bottom phasing Up to 5000A main horizontal and vertical distribution 2500A feeder breakers up to four high in a section Sliding splice main horizontal bus connectors Up to 600 Q 85kA 600V non Arc Resistant NEMA 1 enclosure UL 1558 compliant Seismic compliance to IBC2009 ASCE7 10 Manual MNS SG Drawout Switchgear 7 Il Industry Standards The Emax power breakers are designed tested and constructed in accordance with the following standards MNS SG with Emax power breakers is designed tested and constructed in accordance with the ANSI C37 13 Low Voltage AC Power Circuit following industry standards Breakers Used in Enclosures ANSI C37 16 Preferred Ratings Related UL 1558 Metal Enclosed Low Voltage Power Hequirements and Application for Low Voltage Power Circuit Breaker Switchgear Circuit Breakers and AC Power Circuit Protectors ANSI C37 20 1 IEEE Standard for Metal Enclosed ANSI C37 17 Trip Devices for AC and General Low Voltage Power Circuit Breaker Switchgear Purpose DC Low Voltage Power Circuit Breakers ANSI C37 20 7 IEEE Guide for Testing Metal UL1066 Low Voltage AC and DC Power Circuit Enclosed Switchgear
62. ocation B 3200A Main N A N A Location C 3200A Tie N A Mem TC EE HOUR 3200A Tie N A NTT Location D 2500A Feeder N A 56 MNS SG Drawout Switchgear Manual 4000A Dimensions and Breaker Arrangement Width by Ampacity MOOR 39 4 x Depth 70 87 T 1000mm 1800mm Arc Resistant top of plenum 122 1 3100 5mm Non Arc Resistant top of chimney 95 92 2436 4mm Non Arc Resistant w overhead lifting device 99 4 2524mm oection Type Main 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire oo a EE Location A Location D and then 4000A Main 2500 Not Applicable Not Applicable not allowed Feeder in Location M 9 22 C and D Location B Not Applicable Not Applicable Feeders in Location D 4000A 2500 4000A Main 25004 Feeders in Location A C Feeder Location M 4000 4000A Main with CT s B with CT s no feeders Location D Not Applicable no feeders Section Tie 65KA 3Wire 100KA 3Wire 65KA 4Wire 100KA 4Wire 2 A unl Location A 2500A unless CT s in Tie 2500A unless CT s in Tie 2500A unless CT s in Tie SS TEETH M Location 2500 unless CT s in 2500A unless CT s in Tie 2500A unless CT s in Tie win x 4000A Tie no ct s 2500A 4000A Tie ct
63. ors 1000m is approximately 3300 ft Breaker Derating The Emax power breakers do not undergo any changes in their rated performance up to an altitude of 6600 ft 2000m As the altitude increases the atmospheric properties alter in terms of composition dielectric capacity cooling power and pressure Therefore the breaker undergoes the following derating m ft 6600 9900 13200 16500 m 2000 3000 4000 5000 2 Continuous current rating A In 0 98xIn 0 93xln 0 90xln Notes In breaker current Manual MNS SG Drawout Switchgear 11 Breaker Temperature Derating The continuous current rating of Emax circuit breakers is based on their use in an enclosure at 40 C ambient temperature and 105 C maximum breaker temperature for Class A insulation Continuous current ratings of Emax circuit breakers must be derated for ambient temperatures above 40 C Trio unit ambient is limited to 70 C Ambient temperature C F Derating Factor PE N X E a RECTE 25 rm TE as P Loss lu A Withdrawable 3 Pole btu hr are NM MEI
64. protection in the standard version The neutral protection can be excluded or set to 100 E2 E4 f and Repression 14 threshold threshold LL M s ss ee 2 M LL E 7 In rated current of the rating plug Adjustable neutral protection setting E6 f In installations where very high harmonics occur the resulting current at the neutral can be higher than that of the phases Therefore it is possible to set the neutral protection at 150 or 200 of the value set for the phases In this case it is necessary to reduce the setting of protection L accordingly 1 The table below lists the neutral settinos for the various possible combinations between type of circuit breaker and the threshold 1 setting Start up function The start up function allows protections S and G to operate with higher trip thresholds during the start up phase This avoids untimely tripping caused by the high inrush currents of certain loads motors transformers lamps The start up phase lasts from 100ms to 1 5 5 in steps of 0 05 s It is automatically recognized by the PR122 release as follows When the closes with the release self supplied When the peak value of the maximum current exceeds 0 1 x In A new start up becomes possible after the current has fallen below the threshold of 0 1 x In if the release is supplied from an external source Circuit breaker model 0 4 lt lt 0 5 0 5 x lt 0 66
65. r than 160A Accuracy of the ammeter measurement chain current sensor plus ammeter is no more than 1 596 in the 3096 12096 current interval of In Currents three phases L1 L2 L3 neutral Ne and earth fault Instantaneous values of currents during a period of time data logger Maintenance number of operations percentage of contact wear opening data storage last 20 trips and 20 events When the optional PR120 V is connected the following additional measurement functions are present Voltage phase phase phase neutral and residual voltage Instantaneous values of voltages during a period of time data logger Power active reactive and apparent Power factor Frequency and peak factor Energy active reactive apparent counter Electronic Trip Units 123 Characteristics The PR123 protection release completes the range of releases available the Emax family of circuit breakers It is a high performance and extraordinarily versatile release capable of offering a complete set of functions for protection measurement signaling data storage and control of the circuit breaker and it represents the benchmark in low voltage protection units for circuit breakers 12 11 1 2 The front interface of the unit common to PR122 P is extremely simple thanks to the aid of the liquid crystal graphics display It can show diagrams bar graphs measurements and sine curves for the vario
66. ral bus is located at the middle of the switchgear section The bus bars are connected to the adjacent section at each end by means of bus splice links All bus designs are based on UL and ANSI 37 20 1 standard temperature rise of 65 C maximum above 40 C maximum ambient air temperature The bus bar compartment is separated from the breaker compartment and cable compartments by grounded steel barriers All bus is Supported by steel supported polyester fingerplates All main bus construction is based on single section shipping splits Main bus amperages include 1600A 2000A 3200A 4000A and 5000 with bus bracing up to 100kA Silver plated bus is standard with optional tin plating available The size and number of conductors is shown below Table x y Main bus bar system arrangements Continuous Number of of Current u Conductors Conductors ME ME PM oo M ME M ME ME M EM ME ME MEE D m e oM MEE E 1x WHALE Ls ix HAE duWukFS PHATE a FRAGE PHASE C Manual MNS SG Drawout Switchgear 15 For tie breaker sections two horizontal bus bar Splice Kits systems are installed When two or more sections connect to form a lineup the main horizontal bus bars need to be connected using the factory provided splice kits Splice kits are pre installed in sections that are on the same shipping split Splice kits are not provided in the end sections of a
67. rangement 54 Dimensions and Breaker Arrangement 54 Floor plan conduit 59 Arc Resistant Layout RestrictionsS 61 Weights by Breaker Section 67 Manual MNS SG Drawout Switchgear 3 Product Description General For over 30 years ABB has been the global leader for low voltage switchgear and motor control centers MNS Drawing on heritage of technology excellence and innovation the MNS product family in North America has been expanded with the new MNS SG Low Voltage Metal Enclosed Arc Resistant Switchgear The MNS SG low voltage arc resistant switchgear is industrial duty equipment built to ANSI UL standards and designed to use 100 rated Emax circuit breakers The flexibility of the MNS SG platform results in part from the consistent application of the modular principle both in electrical and mechanical design that enables customization of the structural design interior arrangement and degree of protection The switchgear can be outfitted as needed with standardized components to perfectly adapt the MNS SG to each application The MNS SG was designed built and tested to meet all applicable requirements for UL1558 ANSI C37 20 1 and ANSI 37 20 7 It represents a further extension of the ABB vision to deliver products that provide customers with advanced solutions meeti
68. re listed below true R M S measurements of the current values trio cause indication and trip data recording SACE PR121 PR121 P Protection PR122 PR122 P protecion TS PR123 Protection Ce L T T T L K mom m L K KR E 1 121 121 ng 1 5 PR122 P 122 For versions e Mew modules available Measuring 000000 Communicabon Signaling opt Biuetooth wireless link opt PR123 P PR123 P ng For versions oooooooocooc Signaling Biuelooth wireless link Manual MNS SG Drawout Switchgear 31 Electronic trip units UL Versions available Features Protection against overload with L inverse long time delay trip Selective protection against short inverse B selective protection against short circuit inverse or definite short lime delay trip cie eee dr nee with stable tip current threshold 9 Protection against ground fault i Protection against directional short circuil with adjustable time delay Protection against phase unbalance Residual voltage protection Load connection and disconnection according the current passing through the circuit breaker Can be activated for protection functions G and
69. re stored in a non volatile memory and displayed in a bar graph Other Functions PR123 P integrates all the features in terms of protection measurement signaling and communication described for PR122 P equipped with PR120 V Notes The directional short circuit protection can be disabled for an adjustable set time t k and can either be self supplied or use the auxiliary power supply Directional protection is not available on 400A rating Metering PR120 V Measurement Module This optional internal module installed in PR122 standard PR123 allows the release to measure the phase and neutral voltages and to process them in order to achieve a series of features in terms of protection and measurement PR120 V does not normally require any external connection or Voltage Transformer since it is connected internally to the lower terminals of Emax Circuit Breakers When necessary the connection of voltage pick ups can be moved to any other points i e upper terminals by using the alternative connection located in the terminal box The module is provided with a sealable switch disconnector for the dielectric test PR120 V is able to energize the PR122 while line voltage input is above 85V The use of Voltage Transformers is mandatory for rated voltages higher than 690V Voltage transformers shall have burdens equal to 10VA and accuracy class 0 5 or better Additional Protections with PR120 V Under Voltage UV
70. ring information on the circuit breaker and load conditions last trip information runtime currents and other information PR120 D M communication module Furthermore a new generation of software dedicated to installation configuration supervision and control of protection releases and circuit breakers is now available SDView 2000 SD Pocket TestBus2 Viri Diss Je Ching Tisa Bon spei bon ana conned use all these functions it is sufficient to have a with MS Windows Mobile 2003 and interface or a personal computer with MS Windows2000 OS and new PR120 D BT or BT030 Bluetooth interface devices SD Pocket is freeware and it can be downloaded from the BOL website http bol it abb com use does not require the presence of dialogue units for the releases m s wu k ep amma _ na ma ume oA an 422 aes TE rz u PB a if E m im im P E Em Fe jm TP Manual MNS SG Drawout Switchgear 47 2 TestBus2 is the ABB commissioning and diagnostic software for all Modbus RTU devices It can be used during system startup or to troubleshoot an installed network TestBus2 automatically scans the RS 485 bus detects all connected devices and checks their communi
71. rip unit by means of a dedicated serial line through which all of the information about the activation status of the protection functions flows The corresponding power contacts are closed based on this information The following signals contacts are available overload pre alarm L the alarm signal remains active throughout the overload until the trip unit is tripped timing and tripping of any protections the trip signals of the protections remain active during the timing phase and after the trip unit has tripped protection tripped timing and over temperature threshold exceeded T gt 185 F 85 C two load control contacts connection and disconnection of a load or disconnection of two loads trip unit tripped dialogue fault on a serial line connecting the protection and signaling units phase unbalance Setting a dip switch allows up to seven signal contacts to be freely configured in PR122 PR123 including direction protection D tripped under and overvoltage UV OV tripped reverse power HP tripped and others Two contacts available on the PRO21 K unit load 50 MNS SG Drawout Switchgear Manual control can pilot a circuit breaker shunt trip and closing coil These contacts allow various applications including load control alarms signals and electrical locks Pressing the Reset pushbutton resets the status of all signals The unit also contains ten LEDs to visually signal the followin
72. rs test circuit was calibrated to deliver 100kA at 480 V for 500 ms as prescribed by ANSI C37 20 7 A 10 AWG wire was used to conduct the arc ignition in specific locations simulating events that would typically occur under normal operating conditions All evaluation criteria were met or exceeded The MNS SG was tested at KEMA Powertest to IEEE C37 20 7 for Type 2B Accessibility with arcs initiated in the breaker vertical horizontal bus and cable compartments The arc duration was the full duration as recommended by the ANSI standard with no interdependence on upstream breaker tripping speed Arc Resistant Features Heduced PPE requirements due to ANSI C37 20 7 testing as provided for in the NFPA 7OE Table 130 7 9 Arc resistant equipment reduces the PPE hazard risk category to zero when inserting or removing racking a breaker from the cubicle or opening closing a breaker within the enclosure with the door closed Hear door flaps are open to provide added air flow under normal operating conditions but automatically close during an arc event to prevent pressure and gasses from escaping Roof chimney flaps automatically open to safely exhaust pressure and gasses independent of the arc origination point inside the switchgear The optional plenum contains exhaust pressure and gas and channels them to a designated safe area outside the electrical room Front and optional back doors are strengthened with three
73. s 2500A Location Feeders in Locations Feeders in ete n 5 NN 4000A Tie 4000 Tie 4000A with 5 x x 4000A Tie with ct s Location D no feeder Section Type Same Section 65 3Wire 100 3Wire 65 4Wire 100 4Wire Location 2500 Feeder 4000 N A N A Location B 4000A Main 4000A Main N A N A Location C 4000A Tie 4000A Tie N A N A Location D 2500A Feeder 4000A Tie N A N A Manual MNS SG Drawout Switchgear 57 5000 Dimensions and Breaker Arrangement Width by Ampacity Ampacity Width Height Arc Resistant top of chimney 96 1 2439 7mm Arc Resistant w overhead lifting device 99 4 2524mm ee TTT adnate a A i 1000mm 1800mm 0022 2500 unless 5000 D with CT s and then allowed 2500 unless 5000 Cell D with CT s and then not allowed 2500A unless 5000A in Cell D with CT s and then not allowed 2500A unless 5000A in Cell D with CT s and then not allowed 2500A unless 5000A in Cell D with CT s and then not allowed 5000A main 2500A Feeder in Location and x B with CT s no feeders 5000A Main 5000A Main 2500 Feeder Bus A if no CT s are required if no CT s are required in 2500A Feeder Bus in Tie Breaker E3 2500A Feeder Bus A if no CT s are required in Breaker E3 2
74. s of contactors or switch disconnectors externally wired to the release controlled by the PR122 P by PR120 K internal contacts or by PRO21 K unit Two different Load Control schemes can be implemented disconnection of two separate loads with different current thresholds connection and disconnection of a load with hysteresis Current thresholds and trip times are smaller than those available for selection with protection L so that load control can be used to prevent overload tripping Internal PR120 K or external PRO21 K accessory unit is required for Load Control The function is only active when an auxiliary power supply is present 40 MNS SG Drawout Switchgear Manual Measurement function The current measurement function ammeter is present on all versions of the SACE 122 unit The display shows histograms showing the currents of the three phases and neutral on the main page Furthermore the most loaded phase current is indicated in numerical format Earth fault current where applicable is shown on a dedicated page The latter current value takes on two different meanings depending on whether the external toroidal transformer for the Source Ground Return function or the internal transformer residual type is connected ammeter can operate either with self supply or with an auxiliary power supply voltage In the latter case the display is rear lit and the ammeter is active even at current levels lowe
75. sec or 30 sec IV Technical Equipment Ratings Rated continuous current Rated tested maximum voltage Arc Resistant Rated voltage Arc Resistant Rated tested maximum voltage Non Arc Resistant Rated voltage Non Arc Resistant Phases Neutral when required on 4Wire Systems Frequency Short circuit current withstand at 480Vac Short circuit current withstand at 600 Non Arc Resistant Bus Bracing Environmental Conditions Enclosure Rating Arc Resistant Enclosure Rating Non Arc Resistant Seismic Ratings Temperature range during operation Temperature range for transport Storage Maximum bus temperature Overall System Derating ANSI Switchgear Altitude Correction Factors Notes Intermediate values obtained interpolation 1600 2000 3200 4000A 5000A 254Vac 508Vac 240Vac 480Vac 254Vac 508Vac 635Vac 240Vac 480Vac 600Vac 3 phase 3 wire 3 phase 4 wire 100 rated 60 Hz up to 100kA up to 85 up to 480 up to 85kA 600V 1 NEMA 1 with and without Gasketing IBC2009 ASCE7 10 25 to 40 Degree C 13 to 104 Degree F 40 to 70 Degree C 40 to 158 Degree F to 40 Degree 32 to 158 Degree F 65 over 40 Degree 149 over 104 Degree F Voltage ee TO 9590 99 For devices used in switchgear assemblies standards covering specific devices should used determine the specific altitude correction fact
76. sistant Layout Restrictions Front View with Plenum Design to wall 1 31ft 400mm Min x 3 08 i 3 0ft 915mm Min 915mm Min Manual MNS SG Drawout Switchgear 65 2 191 669mm Exhaust Plenum Vertical Side MNS SG Arc Resistant Layout Restrictions Exhaust Opening for Plenum Design Wall Horizontal Cutout Gap must be seal after install T T TT I rT L T IT T T LT I I L T T gt j J j 1 L L L i L L L IL L L L L 2281 696mm Exhaust Plenum Horizontal Side 66 MNS SG Drawout Switchgear Manual Weights by Breaker Section Weights listed in the following table are approximate Consult equipment shipping documents for actual weights and dimensions 23 6 27 6 31 5 39 4 600mm 700mm 800mm 1000mm Breaker Structure Breaker Ampacity Wide Wide Wide Wide Weight Units 70 9 3 70 9 3 70 9 3 70 9 3 1800mm 1800mm 1800mm 1800mm P Deep Deep Deep 749 661 lbs Tee ee ee 340 300 kg s 360 385 350 Above 8200810 m o 445 600 TNT TP RES sn 2 uuu s TID s MU MEER S M EE sss 2 __ DM S CUM ME
77. th a grounding strap Manual MNS SG Drawout Switchgear 19 and bottom cover plates Bottom plates Bottom plates are manufactured 14 gauge steel include removable cutout covers If bottom cable entry is specified A single bottom plate is provided for the cable and bus bar compartments and a second bottom plate is provided for the cable compartment Bottom plates are optional for non arc resistant switchgear standard for arc resistant switchgear Roof plate device compartment Roof plates are manufactured in 14 gauge steel For the cable and device compartment roof plates removable cutout covers are provided if top cable entry is specified The bus bar compartment roof plate is a ventilated chimney Arc resistant switchgear lineups include a hinged pressure relief flap on the top of the ventilated chimney Segregation barriers The switchgear is provided with a segregation barrier to separate the main bus bar compartment and the cable compartment These barriers are also included if bus runback assemblies are present Four piece cable compartment barriers are also available to provide segregation between sections standard for arc resistant 141111 k 20 MNS SG Drawout Switchgear Manual Paint The standard finish color is light gray paint ANSI 61 The standard painting process is a UL approved electrostatic powder coat paint system utilizing a polyester powder
78. the gear in an instrument compartment or in the breaker compartment The number of spare terminal points may impact overall equipment layout dimensions 24 MNS SG Drawout Switchgear Manual Voltage Transformers Voltage transformers utilized in the MNS SG are mounted in either an instrument compartment or in the rear section on a mounting pan Primary and secondary fuses are mounted separately in an instrument compartment Electrical Characteristics for Standard Potential Transformer Insulation Class 600 volt dielectric 10 kV full wave BIL Accuracy Class 0 6W 1 2 at 60 Hz Thermal ratings 150 VA at 30 C ambient and 100 VA at 55 C ambient Control Power Transformers In the absence of externally supplied 125VDC for the required instruments and breakers a 120VAC control power transformer can be supplied These transformers are sized according to the load requirement of the breakers and other installed equipment The control power transformers are mounted in either an available instrument compartment or on a mounting base in the rear of the section Standard transformer values are 1kVA 5kVA Larger transformers 7 5kVA 10KVA and 15kVA are available as options that require custom mounting considerations The control power transformers are rated for 600V dielectric insulation class Primary and secondary fuses are either mounted separately in an instrument compartment or have on board
79. us electrical values PR123 integrates all the features offered by PR122 P plus a series of evolute functionalities As well as PR122 it can be integrated with the additional features provided by internal modules and external accessories SACE PR123 P Legend 1 LED Warning indicator 2 Alarm LED 3 Rear lit graphic display 4 Cursor UP button 5 Cursor DOWN button 6 Test connector for connecting or testing the release by means of an external device PRO30 B battery unit wireless communication unit and SACE PRO10 T unit ENTER button to confirm data or change pages 8 Button to exit submenus or cancel operations ESC 9 Rating plug 10 Serial number of protection release 11 PowerLED 12 Voltage uptake switch disconnector Manual MNS SG Drawout Switchgear 41 Electronic Trip Units PR123 P Protection functions PR123 release offers the following protection functions Overload L 1 Selective short circuit S Instantaneous short circuit 1 Earth fault with adjustable delay G Directional short circuit with adjustable delay D Phase unbalance U Protection against over temperature OT Load control Under voltage UV Overvoltage OV Residual voltage RV Reverse power RP Under frequency UF Over frequency OF Phase sequence alarm only In addition to PR122 P features the following improvements are available Overlo
80. witchgear In standard switchoear the metal cabinet provides limited protection from the mechanical forces generated by bolted faults on the load terminals should be noted that arc resistant switchgear does nothing to prevent internal arcs from occurring Instead it contains and redirects the arc gasses away from the switchgear and operators ABB arc resistant switchgear protects operating and maintenance personnel from dangerous arc faults by containing and channeling the arc energy out of the top of the switchgear regardless of where the arc originated inside the equipment Arc resistant switchgear cabinets are reinforced to better withstand the heat and pressure created by the fault containing them until the current is interrupted by a power circuit breaker or other protective device Modifications include additional barriers inside the switchgear combined with more robust locking mechanisms Heat and pressure are expelled through chimneys mounted on the top of the switchgear and may be vented via an optional plenum to a safe area outside the electrical room 6 MNS SG Drawout Switchgear Manual When a bolted fault occurs the voltage approaches zero at the fault location while the energy generated by the fault is dissipated throughout the power system The circuit breaker chutes cool and extinguish the arc generated within the circuit breaker as it interrupts the fault There is limited out gassing created by the arc from
81. y function allows the fault area be insulated by segregating the system very rapidly only at the level closest to the fault whilst leaving the rest of the installation running This is done by connecting the releases together the release nearest the fault is tripped instantly sending a block signal to the other releases affected by the same fault The zone selectivity function can be enabled if the fixed time curve has been selected and an auxiliary power supply is present Zone selectivity can be applied with protections S and G or alternatively with protection D Measurement functions The PR123 release provides a complete set of measurements Currents three phases L1 L2 L3 neutral Ne and earth fault Voltage phase phase phase neutral and residual voltage Power active reactive and apparent Power factor Frequency and peak factor Energy active reactive apparent counter Harmonics calculation up to the 40th harmonic waveform and module of the harmonics displayed up to the 35th for frequency f 60Hz Maintenance number of operations percentage of contact wear opening data storage 44 MNS SG Drawout Switchgear Manual PR129 unit is able to provide the pattern of measurements for some values over an adjustable period of time P such as mean active power maximum active power maximum current maximum voltage and minimum voltage The last 24 P periods adjustable from 5 to 120 min a

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