GE Digital Energy SG 400 kVA Operating Manual

Contents

Modifications reserved Page 51/86OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA7.2.4 Restore to normal operation after EPO (Emergency Power Off)UPS panel after activation of EPO(Emergency Power Off) with Utility notavailable, i.e. complete shutdown ofthe UPS.In this case wait until Utility is againavailable, then proceed to restart theUPS as described below. Points 1through 3.UPS panel after activation of EPO (EmergencyPower Off) with Utility available.• All Contacts are open;• Rectifier, Inverter and Static-Switchshutdown.The Battery remains connected to the UPS in case of configuration without externalBattery Breaker Release!1. Reset the EPO (Emergency Power Off)button.• Press mute, to reset alarm and buzzer.2. Press “inverter off” ( O ) key.• Rectifier starts with blinking LED.• At the end of Soft-start the LED remains lit.• The LCD screen shows: “LOAD OFF”.Proceed with step 3 only when the LED 3remains constantly lit.3. Connect the Battery to the UPS by closingthe external Battery Breaker Release.4. Press “inverter on” ( I ) key.• Inverter starts with blinking LED.• At the end of Soft-start the LED remains lit.• UPS output LED and LCD screen indicateboth: “LOAD ON INVERTER”.END OF PROCEDURELED 3