Install the Backfeed Kit EPWOPT015/EPWOPT016 on the Unit Input Breaker UIB

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Turn the UPS system completely OFF before starting this procedure. Wait five minutes before opening the UPS to allow the capacitors to discharge. Failure to follow these instructions will result in death or serious injury.

NOTE: EPWOPT015 and EPWOPT016 only differ in size. The installation procedure for EPWOPT015 and EPWOPT016 is the same. The following procedure illustrates the installation procedure using EPWOPT015 as an example.

Turn the UPS completely off.
Lockout/Tagout the UPS battery breaker and UPS static switch input breaker SSIB in the OFF (open) position.
Remove the indicated protection covers from the UPS.

NOTE: Protection covers vary for different UPS models. The following illustration uses the Galaxy PW 2nd Gen 10-40 kVA 3:1 220 VDC UPS as an example.

Measure for and verify ABSENCE of voltage on each input/bypass/output busbar before continuing.

DANGER
hAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Measure for and verify ABSENCE of voltage on each input/bypass/output busbar before continuing. Failure to follow these instructions will result in death or serious injury.

NOTE: The position of the input/bypass/output busbar varies. The following illustration uses the Galaxy PW 2nd Gen 10-40 kVA 3:1 220 VDC UPS as an example.

On the unit input breaker UIB, push the button to set the unit input breaker UIB from the OFF (open) position to the Trip position.
Remove the indicated screws.
Open the unit input breaker UIB cover. The backfeed kit will be installed in the marked position.
Push the backfeed kit EPWOPT015 into position.
Make a notch in the top of the unit input breaker UIB cover for the backfeed shunt trip cables.
Close the unit input breaker UIB cover. Route the backfeed shunt trip cables through the top notch.
Tighten the indicated screws and torque to 1 Nm.
Lockout/Tagout the unit input breaker UIB in the OFF (open) position.
Connect the backfeed shunt trip cables to the terminal blocks DO* in the UPS controller section according to the following diagram. See the UPS installation manual for cable routing details. Note the DO position that is connected, which will be used in Configure the Backfeed Protection Settings for the Unit Input Breaker UIB on the UPS Display.

NOTE: The operation voltage for the backfeed shunt trip cables is 220 VAC 50 Hz or 60 Hz.
Route the backfeed shunt trip cables along the post cables reliefs and into the bottom brush plates to the output busbars (L, N).

NOTE: The position of the output busbars varies. The following illustration uses the Galaxy PW 2nd Gen 10-40 kVA 3:1 220 VDC UPS as an example.
Connect the backfeed shunt trip cables to the output busbars (L, N) according to the UPS installation manual.
Continue to the static switch input breaker SSIB installation, if relevant (Install the Backfeed Kit EPWOPT015/EPWOPT016 on the Static Switch Input Breaker SSIB) or reinstall the protection covers.