GE Industrial Solutions SG Series 225 & 300 Operating Manual User Manual
Page 62
Modifications reserved
Page 62/79
OPM_SGS_USM_M22_M30_2US_V010.doc
User Manual SG Series 225 & 300 UL S2
3. Open the UPS Output Switch Q1 (Pos. O) and then press the “Load Off” key on all Units.
•
The Load is now supplied only through the Manual Bypass Q2 of all Units.
•
LED 8 (Automatic Bypass ON) turns OFF and LED 9 (Manual Bypass Q2 ON) stays lit.
•
All Rectifiers are shutdown and all output and input Contactors are opened.
The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY MANUAL BYPASS Q2”.
Synoptic Diagram of first unit
Synoptic Diagram of other units
4. Disconnect the Battery from on all Units by opening (Pos. O) the External Battery Switch or
Fuses.
•
Wait 5 minutes for DC-Link Capacitors discharge.
The Load is now powered from the Utility through all Manual Bypass Q2 (option) of the Parallel
System.
END OF PROCEDURE
WARNING!
It will take a minimum of 5 minutes for the DC capacitors to discharge.
Open only the front door, do not open any other part of the UPS.
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