ABB PowerWave 33 Series 3 User Manual page 41

Situation of UPS-System before starting the Transfer Procedure to ON-LINE mode:
The load is supplied directly by Input Mains through the Maintenance Switch (IA1) and the UPS is
OFF.
1. Close the Input Switch (IA4) and the Bypass Switch (IA3)
2. Close battery fuses/breakers in the external battery cabinets or racks.
3. On the LCD's: "LOAD OFF, SUPPLY FAILURE" will appear and the mimic panel will
show:
LED Indicator
LINE 1
LINE 2
BYPASS
INVERTER
BATTERY
4. Close all Parallel Isolators IA2.
5. Press simultaneously the two ON/OFF buttons on the UPS-control panel (PMD).
Unit will start-up and after about 60 seconds the mimic panel will show:
LED Indicator
LINE 1
LINE 2
BYPASS
INVERTER
BATTERY
6. Make sure that the bypass LED is green, then open the Maintenance Bypass Switch of
each unit (position OFF).
7. The message "MANUAL BYP IS OPEN" will appear on the LCD and the mimic panel will
show as below:
LED Indicator
LINE 1
LINE 2
BYPASS
INVERTER
BATTERY
8. Using the control panel, select the COMMANDS menu and choose command "LOAD TO
INVERTER" (for parallel operation is enough to give the order in one of the units). This will
transfer the LOAD to Inverter on the complete system (all units).
THE LOAD IS NOW SUPPLIED BY INVERTER POWER AND IS PROTECTED
Modifications reserved
Page 41/50
Colour
Green
OFF
OFF
OFF
Green
Colour
Green
Green
Green
Red
Green
Colour
Green
Green
Green
OFF
Green