GE Digital Energy SG 400 kVA Operating Manual

Contents

Modifications reserved Page 49/86OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA7.2.2 Complete UPS shutdown (No Load supply)NOTE !The Load must be disconnected.Initial status:Load supplied from Inverter.1. Press “total off” button.• Load is disconnected from UPS.• Rectifier is shut down and all output andinput contactors will be opened.• LED’s, Rectifier, Inverter and Load are OFF.• Press mute, to reset alarm and buzzer.The Battery remains connected to the UPS in case of configuration without externalBattery Breaker Release!2. Open Q1 (Pos. O).• LED service check lights up.4. Disconnect the Battery from the UPS (only for UPS configuration without externalBattery Breaker Release).• Wait 5 minutes for DC-Link Capacitors to discharge.Before you proceed with any kind ofintervention on the UPS, make sure theDC-Link voltage be less than 15 VDC.Ub=15V Ib= + 0ABattery Temp= + 20°CCharge Level= 87%Autonomy = 12minmeteringalarmsparameters+–ok4. Disconnect the Utility.• All LED’s are OFF.END OF PROCEDURE