Modifications reserved Page 42/86
OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA
7.1 PROCEDURES FOR SINGLE UPS
7.1.1 Start-up of the SG Series
Verify with open front door: Switch Q1 and Q2 must be open (Pos. O).
1. Connect the Utility power on the UPS.
(In case of separate inputs for Rectifier and
Bypass, connect both).
• Power supply starts up.
Indicated with flashing alarm and buzzer
sound.
• LED’s as indicated will be lit.
• Press mute, to reset alarm and buzzer.
2. Close Q1 (Pos. I).
• Bypass Utility connects to the output.
• Rectifier starts automatically, blinking LED
indicates Soft-start.
• At the end of Rectifier Soft-start, LED
remains lit.
Proceed with step 3 only, when the LED 3
remains constantly lit.
3. Connect the Battery to the UPS by closing
the external Battery Breaker Release.
4. Press “inverter on” ( I ) key.
• Soft-start of Inverter indicated with
blinking LED.
• At the end of Soft-start the LED remains
lit.
• Automatic transfer from Bypass to
Inverter.
• UPS output LED indicates Load on
Inverter.
The LCD must display on the main screen the status “LOAD ON INVERTER”.
END OF PROCEDURE
NOTE !
The Battery must be charged for at least 10 hours, in order to ensure the full
backup runtime in the case of a Utility Failure.
LED 3
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