Section-5
04-3006_S5_OPM_ABB_DPA_UPSCALE_RI_10-80kW_EN_150316.doc Page 6/14 ABB
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5.1.4 Load Transfer: from Maintenance Bypass to Inverter operations
This procedure describes the sequence of operations to be done in order to restart the UPS and restore ON-LINE
mode (Load on Inverter).
THE OPERATIONS DESCRIBED IN THIS CHAPTER MUST BE
PERFORMED BY A SERVICE ENGINEER FROM THE MANUFACTURER OR
FROM A AGENT CERTIFIED BY THE MANUFACTURER.
Situation of UPS-System before starting the Transfer Procedure to ON-LINE mode:
The load is supplied directly by Input Mains power and the UPS is OFF.
1. Close battery fuses/breakers in the external battery cabinets or racks.
2. On the LCD’s: “LOAD OFF, SUPPLY FAILURE” will appear and the mimic panel will show:
3. Press simultaneously the two ON/OFF buttons on the UPS-control panel (PMD) on all control panels
of the modules.
Unit will start-up and after about 60 seconds the mimic panel will show:
4. Make sure that the bypass LED is green, then open the Maintenance Bypass Switch IA1 (position
OFF).
5. Using LCD panel, select the COMMANDS menu and choose command “LOAD TO INVERTER”. This
will transfer the LOAD to Inverter on the complete system (all units). On LCD panel “LOAD
PROTECTED” will appear.
THE LOAD IS NOW SUPPLIED BY INVERTER POWER AND IS PROTECTED
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