Eaton 93E Series - 4.13 Connecting Internal Battery Strings

Eaton 93E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164000301—Rev 04 49
Figure 27. Normally-Closed REPO Switch Wiring
3
1
2
4
1
2
REPO
Switch
(NO)
Twisted
Wires
REPO TB
44..1133 CCoonnnneeccttiinngg IInntteerrnnaall BBaatttteerryy SSttrriinnggss
DANGER
This battery section contains its own energy source. Risk of electric shock. Do not touch uninsulated battery
terminals. The internal wiring may carry LETHAL VOLTAGES.
WARNING
Internal battery strings should be connected by a qualified electrical contractor knowledgeable of battery
systems, and required precautions.
CAUTION
Connect battery strings only after all wiring is complete.
The UPS is shipped with each battery tray string electrically disconnected. To connect the battery tray strings:
1. If not already open, open the front door (see Figure 7) by lifting the latch from the bottom and turning to
the right (counterclockwise) and swing the door open.
2. Remove the screws securing the bottom internal safety shield panel (see Figure 28) and remove the panel
to gain access to the battery section (see Figure 29). Retain the hardware for later use.
3. Connect the red and black connectors marked with the white flags (see Figure 30) for each set of batteries
on the battery shelf.
4. Connect the black connectors (see Figure 30) for each set of batteries on the battery shelf.
5. Connect the red connectors (see Figure 30) for each set of batteries on the battery shelf.
NOTE The Eaton 93E–20 model has battery strings installed on two shelves. The Eaton 93E–
30/20 and Eaton 93E–30/30 models have battery strings installed on three shelves.
UPS System Installation