GE Digital Energy SG 400 kVA Operating Manual page 55

3. Open Q1 (Pos. O) and then press "total off" button on all Units.
The Bypass of all Units will disconnect and all Rectifiers are shutdown.
•
Press mute, to reset alarm and buzzer.
The Battery remains connected to the UPS in case of configuration without external Battery
Breaker Release!
First operated unit
4. Disconnect the Battery from all Units (only for UPS configuration without external Battery
Breaker Release).
• Wait 5 minutes for DC-Link Capacitors to discharge.
Before you proceed with any kind of
intervention on the UPS, make sure the DC-Link
voltage be less than 15 VDC.
First operated unit
Modifications reserved
OPM_SGS_USM_M40_M50_1US_V020.doc
END OF PROCEDURE
All other units of the system
metering
Ub=15V
Ib= + 0A
Battery Temp= + 20 ° C
alarms
Charge Level= 87%
Autonomy = 12min
parameters
All other units of the system
Operating Manual SG Series 400 & 500 kVA
+
–
ok
Page 55/86