1027212
UPS 225 - 275 kVA/300kVAPF0.8
29
Revision E
User’s and Installation Guide
4.6 Installing UPS external and battery power wiring
NOTE
The UPS cabinet is shipped with a debris shield covering the ventilation grill on top of the unit.
Do not remove the debris shield until installation is complete. However, remove the shield
before operating the UPS. Once the debris shield is removed, do not place objects on the
ventilation grill.
Remove the UPS cabinet top or bottom conduit landing plate to drill or punch conduit holes
(see Figure 4-4).
If the load requires a neutral, a bypass source neutral must be provided. If the load does not
require a neutral and there is no neutral conductor connected at the bypass input, an optional
neutral forming kit must be used.
Use the procedures in the following sections to connect the external and battery power wiring.
4.6.1 External power wiring installation
To install wiring to connections:
1.
Remove one top screw and two bottom screws securing the UPS left front panel (see Figure 4-2
on page 26). Lift the panel straight up to remove from the panel hanger bracket at the top of the
cabinet.
2.
Route the input and output cables through either the top or bottom of the cabinet to the UPS
terminals. See Figure 4-4 through Figure 4-6 for wiring access information and common rectifier
feed terminal locations.
3.
Connect phase L1, L2, and L3 (E1, E2, E3), rectifier input power wiring from the utility source to
the rectifier input terminals in the UPS cabinet. See Section 3.2.2 on page 16 for wiring and
termination requirements.
4.
Connect phase L1, L2, and L3 (E6, E7, E8), and Neutral (if required) bypass input power wiring from
the utility source to the bypass input terminals and neutral terminals in the UPS cabinet. See
Section 3.2.2 on page 16 for wiring and termination requirements.
5.
Connect phase L1, L2, and L3 (E9, E10, E11), and Neutral (if required) power wiring from output
terminals and neutral terminals to the critical load. See Section 3.2.2 on page 16 for wiring and
termination requirements.
6.
Proceed to Section 4.6.2.
