Backfeed Protection - ABB PowerValue 11/31 T Operating Manual

5. Reconnect the internal battery cables (if present).
6. Connect the input wires of the UPS and then set the battery breaker
to the position ON. The UPS will start charging the batteries
UP TO TWO STANDARD EXTERNAL BATTERY CABINETS CAN BE
CONNECTED TO THE UPS
NOTE!
AFTER CONNECTING THE BATTERY CABINET, CONFIGURE THE NUMBER
OF BATTERY MODULES IN THE CONTROL PANEL (REFER TO SECTION
5.4.2.5). SEE APPENDIX C FOR FURTHER DETAILS
NOTE!
REFER TO BATTERY CABINET FOR POWERVALUE 11/31 T USER MANUAL
FOR FURTHER INFORMATION
NOTE!

4.4 Backfeed Protection

To support protection against UPS back feed currents, an additional external isolation device must be
installed in the bypass path according to the figure below.
Remove the protecting cover of the back feed terminals on the back of the UPS and install a contactor.
Install the back feed control wire according to relevant wiring rules.
Modifications reserved
Page 26/49
Figure 17: Back feed magnetic contactor installation