48
UPS 675-1100 kVA 3..4x(225-275) kVA
1029052
User’s and Installation Guide
Revision 008
4.8 Installing UPS external and battery power wiring
NOTE
The UPS UPM section 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 4-15).
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, a neutral
must be installed to source star point.
Use the procedures in the following sections to connect the external and battery power wiring.
4.8.1 External power wiring installation
To install wiring to connections:
1.
Remove one top screw and two bottom screws securing each ISBM section left and right front pan-
el (see Figure 4-2 on page 33). Lift the panels straight up to remove from the panel hanger bracket
at the top of the cabinet.
2.
Remove the screws securing the top and bottom protective cover panels and remove the panels to
gain access to the input, output, and battery terminals (see Figure 4-5 on page 37). Retain the
hardware for later use.
3.
Route the input and output cables/busbars through either the top or bottom of the cabinet to the
UPS terminals. See Figure 4-15 through Figure 4-20 for wiring access information and common
rectifier feed terminal locations.
4.
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 22 for wiring and
termination requirements.
5.
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 22 for wiring and termination requirements.
6.
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 22 for wiring and
termination requirements.
7.
Proceed to Section 4.8.2.
