ABB DPA UPScale ST120, User Manual

Page: 52 / 129

Modifications reserved
Page 52/79
6. Check battery polarity and voltage.
7. If the battery polarity and voltage is correct insert internal (if any) and external battery fuses
(breakers).
8. Testing of parallel functions
(The load fuses in output distribution board are still open i.e. the loads are disconnected!).
All UPS-modules are on INVETER MODE
9. Simultaneously press the two ON/OFF buttons on the UPS control panel (PMD) on each of the
module control panels to turn the modules OFF. On the LCDs, the message “LOAD OFF,
SUPPLY FAILURE” will appear
10. Simultaneously press the two ON/OFF buttons on the UPS control panel (PMD) on all control
panels on the modules to turn the modules ON. On the output terminal block there is now
UPS power and on all LCDs, “LOAD PROTECTED” will appear.
11. Load transfer to Maintenance Bypass
Go to the COMMANDS menu, choose the command “LOAD TO BYPASS” and transfer the
load to mains on the control panel of any one of the UPS modules.
Close the maintenance bypass switch IA1 (position “ON”)
On the LCD, “MANUAL BYP IS CLOSED” will appear and the LED indicators will indicate as
shown below:
LED Indicator Color
LINE 1 Green
LINE 2 Green
BYPASS Green
INVERTER RED
BATTERY Green
12. Connect load to the UPS output
Insert fuses in output distribution board
Verify on the control panel that the load is on bypass
13. Open maintenance bypass switch IA1
On LCD: “MANUAL BYP IS OPEN” will appear followed by “LOAD NOT PROTECTED”
14. Check on LCD the output powers, voltages currents and frequencies.
15. Load transfer to Inverter
Go to the COMMANDS menu, choose the command “LOAD TO INVERTER”. Transfer the
load to the inverter on the control panel of any one of the three UPS modules.
On all LCD’s: “LOAD PROTECTED” will appear.
16. Check the output voltages and currents once again.
THE LOAD IS NOW PROTECTED BY THE DPA UPScale TM