GE Industrial Solutions SG Series 400 & 500 Operating Manual - Manual (Page 54)

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OPM_SGS_USM_M40_M50_2US_V010.doc User Manual SG Series 400 & 500 UL S2
7.1.5 Restore to normal operation after “Load Off”
NOTE !
Make sure the UPS to be status of the activation of “Load Off”, i. e. UPS Output
Switch Q1 closed (Pos. I), Manual Bypass Switch Q2 (option) open (Pos. O) and
External Battery Switch or Fuses connected (Pos. I).
If eBoost™ option is available, make sure that eBoost™ Operation Mode is disabled
before starting this procedure.
View of the Synoptic Diagram after pressing the “Load
Off” key.
• All Contactors are open.
• Rectifier, Inverter and Static-Switch shutdown.
• LED Alarm is lit.
` Home\Commands
COMMANDS
RESET TOTAL OFF
REQUEST LOAD OFF
V
1. Reset “Load Off”.
Restore the command “Load Off” by entering the
screen: COMMANDS / RESET TOTAL OFF
• The Load is supplied by the Utility through the Automatic
Bypass.
• Rectifier starts automatically, blinking LED 3 (Rectifier
ON) indicates Soft-start.
• At the end of Soft-start the LED 3 (Rectifier ON) remains
lit.
The Synoptic Diagram must display the status “LOAD
SUPPLIED BY AUTOMATIC BYPASS”.
2. Insert the Inverter by pressing the “Inverter ON” ( I ) key.
• Soft-start of Inverter indicated with blinking LED 5 (Inverter available).
• At the end of Soft-start the LED 5 (Inverter available) remains lit.
• Automatic transfer from Automatic bypass to Inverter.
• LED Alarm turn Off and the LED Operation must be lit.
The Synoptic Diagram must display the status “LOAD
SUPPLIED BY INVERTER”.
END OF PROCEDURE