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Installation

Guide

SG Series

225 & 300 kVA

3.7.3 Battery over current protection and wire sizing

•

Please read the safety precautions at the front of this guide carefully, and thoroughly
review the

Battery

manufacturers installation and maintenance manual before connecting

the batteries to the UPS.

•

If the UPS system has been purchased with an accompanying

Battery Cabinet

, that

cabinet should have an integral

Battery Circuit Breaker

If the UPS has been purchased without a

Battery Cabinet

or remote rack mounted

batteries are to be used then DC over current protection must be provided by others.

•

Choose an appropriate DC fuse or circuit breaker using the current data in the chart
below.

•

Minimum

Battery Cable

requirement is based on the current data below.

The AC values below are current ratings per phase.

These maximum and nominal ratings should be considered when choosing the

appropriate AC over current protection device.

NEC (National Electric Code) Section 210-20 a rules must be applied.

DC current rating is the maximum battery discharge current which the UPS allows.

(See

Fig. 3.7.1-1

and

3.7.1.2

)

AC Input

Rectifier

AC Input

Bypass

AC Input

DC Input

Nom. Max.

SG Series 225 kVA

301 A

360 A

271 A

301 A

360 A

401 A

SG Series 300 kVA

401 A

480 A

361 A

401 A

480 A

535 A

Size of Branch Circuit Over current Protection - All Models: - "CAUTION - To reduce

the risk of fire, only connect UPS to a circuit provided with (See below) maximum

amperes branch circuit over current protection in accordance

with the NEC (National Electric Code), NSI / NFPA 70

AC Input

Rectifier

AC Input

Bypass

AC Input

DC Input

SG Series 225 kVA

450 A

350 A

450 A

600 A

SG Series 300 kVA

600 A

500 A

600 A

700 A

WIRING
Wire sizing according to
NEC Section 210-20 (a) Table 310-16
Use 75°C (167°C) copper wire

Wiring requirements:
AC INPUT RECTIFIER:

3-Phase, 3 wire plus Ground

AC INPUT BYPASS:

3-Phase, 4 wire plus Ground

AC OUTPUT:

3-Phase, 4 wire plus Ground

DC INPUT:

2 wire (positive and negative) plus Ground

Maximum cable diameter that compression lugs can accept.
Refer to torque specifications table for torque requirements.

Rectifier Input Bypass Input

DC Input

AC Output

GND

SG Series 225 kVA

2 x 500 kcmil 2 x 500 kcmil 2 x 750 kcmil 2 x 500 kcmil

350 kcmil

SG Series 300 kVA

2 x 750 kcmil 2 x 500 kcmil 2 x 750 kcmil 2 x 500 kcmil

350 kcmil

Содержание GuardSwitch 300 Series

Страница 1: ... INSTALLATION GUIDE UNINTERRUPTIBLE POWER SUPPLY Digital Energy TM SG Series 225 and 300 kVA Series 0 g General Electric Company 2500 Discovery Blvd Rockwall TX 75032 Telephone 972 290 7400 Fax 972 290 7500 SG Series UPS Technology for the digital world ...

Страница 2: ...Systems All rights reserved The information contained in this publication is intended solely for the purposes indicated The present publication and any other documentation supplied with the UPS system is not to be reproduced either in part or in its entirety without the prior written consent of GE Industrial Systems The illustrations and plans describing the equipment are intended as general refer...

Страница 3: ...ction Please carefully read the Installation Guide It contains all the necessary information about the installation of the UPS Thank you for choosing GE START UP AND COMMISSIONING A GE Global Services Field Engineer must perform start up and commissioning of the UPS Please Contact G E Global Services at least two weeks prior to schedule start up and commissioning at 1 800 637 1738 or by E mail at ...

Страница 4: ...sulting from the use of the information contained in this document WARNING SG Series 225 and 300 kVA is a product that needs to be installed by a licensed and knowledgeable contractor We recommend that this manual be kept next to the UPS for future references If any problems are encountered with the procedures contained in this manual please contact your Service Center before you proceed This docu...

Страница 5: ...sizing 18 3 7 3 Battery over current protection and wire sizing 19 3 8 WIRING CONNECTION 21 3 8 1 Power connections 21 3 8 2 Power connection with common input utility 23 3 8 3 Power connection separate input utility 25 3 8 4 Battery connection 27 3 8 5 Setup for SG Series when functioning as frequency converter 28 3 9 POWER WIRING OF PARALLEL UNITS 29 3 10 PARALLEL CONTROL BUS CONNECTION 30 3 11 ...

Страница 6: ...r removing the sidewalls of the UPS make sure that all earth connections when reassembling are correctly reattached This UPS is intended for use in a controlled indoor environment free of conductive contaminants and protected against animals intrusion HIGH GROUND LEAKAGE CURRENT Ground connection is essential before connecting to AC input Switching OFF the unit does not isolate the UPS from the ut...

Страница 7: ...bjects and jewelry Do not carry metal objects in your pockets where the objects can fall into the Battery Cabinet 2 Tools must have insulated handles and must be insulated so that they will not short Battery Terminals Do not allow a tool to short between individual or separate Battery Terminals or to the cabinet or rack Do not lay tools or metal parts on top of the Battery and do not lay them wher...

Страница 8: ...symbols are defined WARNING if instruction is not followed injury or serious equipment damage may occur CAUTION internal parts have dangerous voltage present Risk of electric shock PE Earth GND Ground PROTECTIVE GROUNDING TERMINAL A terminal which must be connected to earth ground prior to making any other connection to the equipment A terminal to which or from which an alternating sine wave curre...

Страница 9: ...ors SGS_225 300_UPS_04 Q2 Q1 2 4 3 1 1 2 3 4 1 3 4 2 XA CR PA XB Fig 2 1 3 SG Series general view with optional 5th harmonic filter and removed protection panels 1 Opening for top cable entry 2 Opening for bottom cable entry 3 Compression lugs for Utility input and Load output 4 Compression lugs for external Battery connection CR Connectivity Rack PA 24VDC 1A Auxiliary Power Supply XA Terminals fo...

Страница 10: ...ld damage the UPS If the UPS must be lifted by crane use suitable lifting straps and spreader bars Note of the center of gravity marked on the package Forklift Crane Fig 3 1 1 UPS cabinets moving Check for sufficient floor and elevator loading capacity 3 1 1 Dimensions and weight Dimensions SG Series 225 and 300 kVA W x D x H 64 96 x 31 50 x 70 90 inches 1 650 x 800 x 1 800 mm SGS_225 300_UPS dime...

Страница 11: ...way from chemical substances and with a temperature range not exceeding 13 F 25 C to 131 F 55 C Some important functions of the UPS such as the customized functions are defined by parameters stored in a RAM memory A small backup Battery located on the Control Unit board supplies the RAM If the storage time of the UPS exceeds 1 year these functions should be verified by an authorized Service Center...

Страница 12: ...e battery life The SG Series UPS can radiate radio frequency energy Although some RFI filtering is inherent to the UPS there is no guarantee that the UPS will not influence sensitive devices such as cameras and monitors that are positioned close by If interference is expected the UPS should be moved away from the sensitive equipment A single phase power outlet 120 VAC should be provided near the U...

Страница 13: ...input and output cables SG Series openings are provided on the top and the bottom of the UPS for the connection of input and output cables Pay attention to the position of these openings when choosing the placement of the UPS These openings are covered with a protective plate Fixing of the UPS cabinet on the floor The UPS cabinet is free standing and normally does not require to be bolted to the f...

Страница 14: ...motely from the UPS a wall mounted DC disconnect device must be installed within line of site to both the UPS and the Battery The optimal room temperature for the Battery is 68 F 20 C to 77 F 25 C The life of valve regulated batteries will be reduced by 50 for each additional 18 F 10 C that the Battery ambient temperature is above 77 F 25 C The Battery System associated with larger UPS is usually ...

Страница 15: ...UPS room Do not put anything on the top of the cabinet Air filtration systems could be required when the UPS operates in a dirty environment Contact your Dealer or the nearest Service Center for appropriate solutions In order to prevent overheating of the UPS the available air intake flow rate must exceed the total air exhaust flow rate requirement of the UPS system The below table indicates the h...

Страница 16: ...elivered in a wooden crate remove the cabinet from the pallet with care because of the heavy weight of the equipment Take care not to damage the UPS when moving by forklift For parallel systems the delivery also includes the bus control cables for inter connecting the UPS modules Packing material recycling GE Industrial Systems in compliance with environment protection uses only environmentally fr...

Страница 17: ...Rectifier Bypass recommended The Bypass and Rectifier Inputs are to be powered from different Utility supplies F1 and F2 inputs In this case when the Rectifier Input Fuses are opened the Bypass and the Manual Bypass are supplied by the other source In this case remove the interconnection links BR1 BR2 and BR3 on the input terminals or bus bars See Fig 3 8 3 2 Common input Rectifier Bypass The same...

Страница 18: ...tive devices should be sized to allow the transformer magnetization inrush current Caution when using four pole circuit breakers as protection A potential problem exists for situations with Non linear Loads The neutral current could be greater than the phase currents The three phase Utility power supply must be symmetrical with respect to ground due to the existence of voltage surge protection dev...

Страница 19: ...current which the UPS allows See Fig 3 7 1 1 and 3 7 1 2 AC Input Rectifier AC Input Bypass AC Input DC Input F1 F3 Nom Max F2 Nom Max F4 SG Series 225 kVA 301 A 360 A 271 A 301 A 360 A 401 A SG Series 300 kVA 401 A 480 A 361 A 401 A 480 A 535 A Size of Branch Circuit Over current Protection All Models CAUTION To reduce the risk of fire only connect UPS to a circuit provided with See below maximum...

Страница 20: ...0 50 55 30 40 45 6 55 65 75 40 50 60 4 70 85 95 55 65 75 3 85 100 110 65 75 85 2 95 115 130 75 90 100 1 110 130 150 85 100 115 1 0 125 150 170 100 120 135 2 0 145 175 195 115 135 150 3 0 165 200 225 130 155 175 4 0 195 230 260 150 180 205 250 215 255 290 170 205 230 300 240 285 320 190 230 255 350 260 310 350 210 250 280 400 280 335 380 225 270 305 500 320 380 430 260 310 350 600 355 420 475 285 3...

Страница 21: ...the same procedure If the UPS is installed in such a way that the accessibility to the right side panel is reduced field wiring connections can be made from the front side by removing the front right side panel protection cover panel D as indicated in Fig 3 8 1 1 be advised that installation performed from the front position will give the installer reduced visibility to the terminal lugs The input...

Страница 22: ...ore removing or replacing this panel If not serious injury or death could occur How to access the compression lugs for the cable connections SGS_225 300_UPS connection_01US Q2 Q1 2 4 3 1 1 2 3 4 D C E Bottom Top entry cables A B entry cables F Fig 3 8 1 1 Access to the input output connections To access input output and Battery Connections proceed as follows Unscrew bolts B to open the electronics...

Страница 23: ... 1 Fig 3 8 2 1 Power connections Common Input Utility Common Input Rectifier Bypass L1 1 Rectifier Bypass Phase A L2 1 Rectifier Bypass Phase B L3 1 Rectifier Bypass Phase C N Neutral Bypass PE Ground Output Load L1 Load Phase A L2 Load Phase B L3 Load Phase C N Neutral PE Ground Bus bars BR1 BR2 and BR3 must remain connected Cable terminations are to the Rectifier Input Lugs and Output Lugs as sh...

Страница 24: ...nfiguration load can only be connected phase phase Absolutely no load connection permitted to the Neutral of the output transformer In a RPA configuration with 3 wire kit it s most important to connect the Neutrals of the UPS outputs together see Fig 3 8 2 2 Cable section for this connection shall be not less then AWG 1 Fig 3 8 2 2 3 wire kit for RPA Parallel System 2 Bypass transformer In this ca...

Страница 25: ... Utility Separate Input Rectifier Bypass L1 1 Rectifier Phase A L1 2 Bypass Phase A L2 1 Rectifier Phase B L2 2 Bypass Phase B L3 1 Rectifier Phase C L3 2 Bypass Phase C N Neutral Bypass PE Ground The interconnection links BR1 BR2 and BR3 must be removed see Fig 3 8 3 2 Output Load L1 Load Phase A L2 Load Phase B L3 Load Phase C N Neutral PE Ground Bus bars BR1 BR2 and BR3 must be removed Cable te...

Страница 26: ...output transformer In a RPA configuration with 3 wire kit it s most important to connect the Neutrals of the UPS outputs together see Fig 3 8 3 2 Cable section for this connection shall be not less then AWG 1 Fig 3 8 3 2 3 wire kit for RPA Parallel System 2 Bypass transformer In this case the Neutral of wye secondary winding must be connected to the Neutral of the output transformer Contact your S...

Страница 27: ...Power connections Battery Battery Positive pole of the Battery Negative pole of the Battery Do not insert the Battery Fuses before the commissioning Battery Cable Terminations are to the Positive and Negative Terminals as shown above Connect wire to the Lugs using appropriate tools and appropriate torque Torque specification for Input Output and DC power connections on Bus Bars See section 3 8 1 ...

Страница 28: ...osure by means of a padlock or a similar device when the UPS is used as a frequency converter As an added measure of safety the bus bar connections BR1 BR2 and BR3 should also be removed See Fig 3 8 3 2 SGS_225 300_Switches Q2_01 Q2 Q1 Fig 3 8 5 1 Switch Q2 Manual Bypass NOTE The standard SG Series UPS may be operated at 50Hz input with 60Hz output frequency conversion It is recommended that the s...

Страница 29: ...bus bars However it is recommended that a disconnect or isolation switch be inserted in order to totally isolate a unit if needed Verify that power wiring and control wiring are run in separate conduits or cable trays UPS input cables must be run in separate conduits from the output cables Fig 3 9 1 RPA Parallel System 1 Rectifier c Unit Number 1 2 Inverter 2 Unit Number 2 3 Electronic Bypass 3 Un...

Страница 30: ...its in case one of the control cables should fail or be accidentally damaged or disconnected The standard length of the control bus cable between two parallel unit is 40 ft 12 m Maximal overall length of bus connection between the first and the last unit should not be longer than 276 ft 84 m Verify that control wiring is run in individual separate steel conduit Under no circumstance should the con...

Страница 31: ...1 JP2 JP3 and JP4 must be inserted JB1 JA1 JP2 JP1 JP3 JP4 JP3 JP2 JP1 JP4 IM 0048 JB2 JA2 SGT5000_100 150_RPA IM0048_03 JA JB Fig 3 10 3 Bus connection on intermediate units Intermediate units On the parallel bus PCB P34 Bus Interface IM0048 of the intermediate units of the parallel system the Jumpers JP1 JP2 JP3 and JP4 must be removed In a parallel system composed of 2 or more units only the fi...

Страница 32: ...its must be made on the front of the electronic module fitted behind the front doors To properly route the control bus cables the safety screen A must be removed SGT5000_100 150_RPA control bus cable_02US Next parallel unit JB2 JB1 JA2 JA1 A A JA JB Fig 3 11 2 Front view electronic module on intermediate unit Control bus cables connection Plug the cables JA 1 2 3 4 5 6 7 and JB 1 2 3 4 5 6 7 onto ...

Страница 33: ...abling and routing the bus cables JA and JB inside the UPS cabinet In case one unit should be removed from the parallel system the bus cables JA and JB must be removed from the cabinet without disconnecting them from the metal plate where the sockets JA and JB are located For reliability reasons the cables JA 1 2 3 4 5 6 7 and JB 1 2 3 4 5 6 7 connecting the units should be run in separated protec...

Страница 34: ...NO def RL2 1 12 13 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21 10 22 11 1 14 9 1 X1 J2 J3 SGS_225 300_Customer interface_01 J5 J4 XA 2 1 1 2 3 4 JP3 XB 1 2 3 4 Fig 4 1 1 Customer interface NO normally open C common NC normally closed The connectors J4 and J5 can be used for additional SNMP Card Environmental Card not available yet or an additional Customer Interface installation only when the UPS is s...

Страница 35: ...nd operation mode These signals are available either on connector J2 sub D female 25 pin or terminal blocks X1 The meaning of the alarms on the free contacts in standard configuration default is the following X1 1 2 3 or J2 1 2 3 NO C NC Utility Failure def Par RL 1 X1 4 5 6 or J2 4 5 6 NO C NC Load on Inverter def Par RL 3 X1 7 8 9 or J2 7 8 9 NO C NC Stop Operations def Par RL 5 X1 12 13 14 or J...

Страница 36: ... delay of Battery recharging during the generator operation In a parallel system a separate NO Normally Open contact must be connected individually to each unit 4 1 5 AUX external Maintenance Bypass If the UPS system is equipped with an external Maintenance Bypass Switch it is possible to connect a NO normally open voltage free aux contact from the External Bypass Switch to the programmable input ...

Страница 37: ... Terminal XB and the Jumper JP3 on P4 Customer Interface when the cables have been already connected on XB or J2 In a parallel system a separate NC Normally Closed contact must be connected individually to each unit When opened this contact causes the immediate opening of the Contactors K3 K4 K6 K7 and K8 as well as the shutdown of Rectifier Inverter and Static Switch Be aware The reliability of t...

Страница 38: ... Guide SG Series 225 300 kVA 5 NOTES 5 1 NOTES FORM It is recommended to note in this section Notes with date and short description all the operations performed on the UPS as Maintenance components replacement anormal situations etc Date Description Done by ...

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