GE SG 300 Installation Manual Download

Page: 32 / 40

3.9.2 Parallel control bus connection

In cases of parallel operation, the communication between the units takes place through the

control

bus cables

Each parallel unit is equipped with an additional board “

P13

–

RPA Board

“

where the connectors

J52

(A)

and

J62

(B)

are located.

A short control cable provided with a ferrite ring core links the parallel board “

P13 – RPA Board

”

with the

parallel bus socket on which must be connected the

control bus cables

and

on PCB

“

P34 – Bus

Interface

”

All the parallel units are connected to the same control bus.

This connection allows:

•

The microprocessors of each unit to communicate with each other.

•

The oscillators of each unit to be locked together.

•

The regulation loops to compare the output current of each unit in order to equally share the load
current.

For increased reliability, this connection is made with redundant cables.
In this way, communication is maintained between units 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.

NOTE !

Under no circumstance should the control bus cable connecting

(1/2/3/4/5)

and

JB (1/2/3/4/5)

be connected or disconnected after the system has been powered On.

JP3

JP2

JP1

JP4

IM 0048

JB1

JA1

JP3

JP4

JP2

JP1

-300

2_R

-IM

004

8_01

JB1

JP1

JP2

JP4

JP3

JA1

JB2

JA2

JB2
JB3

JA2
JA3

JP1

JP2

JP4

JP3

JA2 + JB2

JA1 + JB1

JA3 + JB3

Next parallel
unit 4, 5, 6

UPS 1

UPS 2

UPS 3

JP3

JP1

JP4

IM 0048

JP2

JP3

JP1

JP4

IM 0048

Fig. 3.9.2-1 RPA System - Control bus connection

The shield of the control bus cable, connected on

and

must be connected to ground with the

appropriate cable clamps fitted on parallel bus socket.

It is important to place the units in sequence of their assigned number.

A unit number from

, is defined by the setting of parameters and displayed on the panel.

This number is also marked inside and outside the packaging.

Modifications reserved

Page 32/40

OPM_SGS_ISG_M22_M30_2US_V010.doc

Installation Guide

SG Series 225 & 300 UL S2

Summary of Contents for SG 300

Page 1: ...ide Uninterruptible Power supply SG Series 225 300 225 300 kVA 480Vac UL S2 GE Consumer Industrial SA General Electric Company CH 6595 Riazzino Locarno Switzerland T 41 0 91 850 51 51 F 41 0 91 850 52...

Page 2: ...Consumer Industrial SA 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...

Page 3: ...START UP AND COMMISSIONING A GE GLOBAL SERVICES FIELD ENGINEER must perform start up and commissioning of the UPS Please Contact GE GLOBAL SERVICES at least two weeks prior to schedule start up and co...

Page 4: ...s 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 p...

Page 5: ...y option 25 3 8 4 Battery and External Battery Breaker connection 28 3 8 5 Interface to External Bypass for single unit 29 3 8 6 Connections to External Bypass switch in case of RPA Parallel System 29...

Page 6: ...reassembling are correctly reattached This UPS is intended for use in a controlled indoor environment free of conductive contaminants and protected against animals intrusion WARNING HIGH EARTH LEAKAGE...

Page 7: ...ry 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 where the...

Page 8: ...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...

Page 9: ...Q1 I ON I ON Q2 0 OFF 1 4 3 2 CR XA XB PA 10 20 19 9 8 21 7 18 6 17 11 22 1 6 4 3 15 14 5 1 2 1 2 13 1 2 3 4 2 1 3 4 Fig 2 1 3 SG Series 225 300 general view with optional 5th harmonic filter and remo...

Page 10: ...of gravity marked on the package Take all necessary precautions to avoid damage to the cabinet while hoisting the UPS Forklift Crane NOTE Fig 3 1 1 UPS cabinets moving Check for sufficient floor and e...

Page 11: ...2 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 th...

Page 12: ...tering 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 shou...

Page 13: ...94 1 650mm 64 96 SGS_225 300_S2_UPS view bottom_01US 45mm Fig 3 4 1 3 Opening on the bottom of the cabinet for input and output cables These openings are covered with a protective plate Fixing of the...

Page 14: ...l room temperature for Battery storage is 68 F 20 C to 77 F 25 C and shall never exceed the range 4 F 20 C to 104 F 40 C The life of valve regulated batteries will be reduced by 50 for each additional...

Page 15: ...est 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...

Page 16: ...devices show a possible anomaly the UPS shall not be commissioned before consulting a Service Center Fig 3 6 2 TiltWatch device NOTE Take care not to damage the UPS when moving by forklift A damaged...

Page 17: ...n mind that when the Utility Fuses are opened there is a supply failure to the Rectifier as well as to the Bypass and Manual Bypass In this case the interconnection links BR1 BR2 and BR3 on the input...

Page 18: ...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 sup...

Page 19: ...Nom Max F4 SG Series 225 338 A 380 A 271 A 338 A 380 A 444 A SG Series 300 451 A 490 A 361 A 451 A 490 A 592 A Size of Branch Circuit Over current Protection All Models CAUTION To reduce the risk of...

Page 20: ...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 35...

Page 21: ...ugs The input output cables must be connected in clockwise phase rotation for both Bypass and Rectifier Input Terminals if separate taking care to avoid risk of short circuit between different poles T...

Page 22: ...illing any holes SGSU_225 300_S2_UPS connection_01US F B A Please remove the plate before drilling any holes Bottom entry cables Q1 0 OFF I ON Q2 0 OFF I ON E D C 12 1 1 4 3 2 13 2 5 3 4 6 7 8 11 19 2...

Page 23: ...gs 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 Common Input Rect...

Page 24: ...Bypass Input 3 wire input ground and the Load does not require a Neutral solidly connect the Output Neutral of the UPS to ground in the Output Distribution Cabinet Wire Neutral Conductors from the UP...

Page 25: ...sing appropriate tools and appropriate torque Torque specification for Input Output and DC power connections on Bus Bars see Section 3 8 1 Dual Input Configuration Rectifier Bypass option L1 1 Rectifi...

Page 26: ...Bypass Input 3 wire input ground and the Load does not require a Neutral solidly connect the Output Neutral of the UPS to ground in the Output Distribution Cabinet Wire Neutral Conductors from the UP...

Page 27: ...N Q1 18 12 13 16 14 15 1 7 7 1 2 3 4 6 5 19 8 11 22 10 21 20 9 Fig 3 8 3 3 AC Bus Bars BR1 BR2 and BR3 For separate Bypass and Rectifier input configuration option the AC Bus Bars BR1 BR2 and BR3 MUST...

Page 28: ...ses before the commissioning PE Battery ground NOTE To meet standards concerning electromagnetic compliance the connection between the UPS and external Battery must be done by using a shielded cable o...

Page 29: ...rnal Bypass for single unit SG Series 225 300 has to be interfaced to the External Bypass Auxiliary Contacts NO for safety reasons This will prevent contactor K7 from closing when the external bypass...

Page 30: ...es SPDs on the AC bus feeding the UPSs Please contact your Service Center for more information When using the eBoost IEMi control function on the programmable user relays of the customer interface X1...

Page 31: ...same for all units of the parallel system no phase shift allowed between units NOTE It is strongly recommended that no transformers automatic circuit breakers or fuses be inserted between the unit s o...

Page 32: ...ength 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 co...

Page 33: ...GSU_225 300_S2_RPA IM0048_03 Fig 3 9 2 3 Bus connection on intermediate units Intermediate units On the parallel bus PCB P34 Bus Interface of the intermediate units of the parallel system the Jumpers...

Page 34: ...onic module fitted behind the front doors To properly route the control bus cables the safety screen A must be removed JB1 JB2 JA1 JA2 A Next parallel unit A JA JB SGSU_225 300_S2_RPA control bus cabl...

Page 35: ...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...

Page 36: ...ult RL1 X1 11 22 or J2 11 24 Programmable Generator ON 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 _225 300_Customer interface_01 J5 J4 XA 2 1 SGS 1 2 3 4 JP3...

Page 37: ...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 X1 4 5 6 or J2 4 5 6 NO C NC Load on...

Page 38: ...S will inhibit eBoost Operation Mode and revert to double conversion operation In a parallel system a separate NO Normally Open contact must be connected to each individual unit 4 1 5 AUX external Mai...

Page 39: ...4 1 7 1 Terminals for connection EPO NOTE This procedure could imply a load shutdown NOTE In case of parallel Customer Interface the EPO contact must be connected to one Customer Interface only but th...

Page 40: ...tallation Guide SG Series 225 300 UL S2 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 co...

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