GE Industrial Solutions SG Series 750 T12 UL S2 User Manual - Manual (Page 54)

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OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2
7.2 PROCEDURES FOR SG Series 750 & SG Series 750 T12 PARALLEL SYSTEM
7.2.1 SG Series 750 & SG Series 750 T12 Parallel System start-up
WARNING !
Before proceeding to Turn ON the UPS System, ensure that the AC and DC external
isolators are OFF, and prevent their inadverted operation.
Ensure that the output load distribution can be powered and all the output isolators
are open.
Open the front door on all UPS units and make sure that:
•
All the connections to the input/output bus bars of the UPS have been made correctly.
• The safety screens are fixed in their position.
• The UPS Output Switch Q1, External Maintenance Bypass Switch (option), Input Circuit Breaker CB4
(option) and the Battery Circuit Breaker must be open (Pos. O).
LEDs on synoptic diagram
LED 1 Utility rectifier OK
LED 2 Utility bypass OK
LED 3 Rectifier ON
LED 4a Discharging battery
LED 4b Charging battery
LED 5 Inverter available
LED 6 Inverter ON
LED 7 Q1 closed
LED 8 Automatic bypass ON
LED 9 Load on UPS
Key Key Key LED LED LED
S G
S _750_S
w
itc
h Q1_01
Q1
Q1 UPS Output Switch
Inverter ON Inverter OFF Load Off Stop Operation Alarm Operation
1. Switch-ON the utility voltage from the input distribution (both rectifier and bypass if
separated).
At this stage the electronic power supply is switched ON.
Overall test results
Test1 OK Test7 OK
Test2 OK Test8 OK
Test3 OK Test9 OK
Test4 OK Test10 OK
Test5 OK Test11 OK
Test6 OK
The UPS performs a SELFTEST.
A successful termination of the tests will be indicated with
Overall test results “OK”.
Commissioning cannot be continued should one or more tests
result to be negative.
Please contact in this case your Service Center.
With “Overall test results - OK” the Synoptic Diagram is displayed.
LED 1 (Utility Rectifier OK) and LED 2 (Utility Bypass OK) must be ON.
The buzzer sounds, press the “MUTE” key to reset acoustical alarm. LED Alarm remains lit.
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