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Installation Manual
Single or '1+N' UPS System
3.8
Battery circuit breaker box
The box contains a battery isolating circuit breaker and the circuit breaker controller board (P/N 4520079F) as also
mounted in the Battery cabinet.
A range of battery circuit breaker boxes is available for use in installations where the battery is not installed in the
battery cabinet, in which case the appropriate battery box is fitted as close as possible to the battery and connected
to the UPS equipment as illustrated in Figure 3-4.
The battery circuit breaker box, used with the circuit breaker controller board, is required to protect the battery from
deep discharging and overcurrents. It also provides electrical isolation between the UPS and the battery, permitting
technical service personnel to reduce the risks involved in maintenance work to a minimum. Inside the box are
connection bars for power cables arriving from the UPS and from the battery.
Note: The control cables from the UPS module to the controller board must be made using a 5-core shielded cable
located in a separate conduit to that containing the battery power cables.
The control signal cable is connected to the circuit breaker controller board (P/N 4520079F) through the terminal board
(X1).
The cable shield must be earthed to prevent induced noise affecting the control operation, and a separate safety earth
must be connected between the UPS module and Circuit Breaker Box.
The battery circuit breaker boxes are of the same size (save for height) for both the 300 kVA and the 400 kVA UPS,
but switch capacity and the section of the connection bar are different.
UPS (kVA)
300
400
For mechanical details refer to the information shown in the following figures.
Liebert Hipulse E
Dimensions
Weight
(H-W-D) (mm)
(Kg)
800x600x300
1000x600x300
(07/04)
Circuit
Breaker
41
800A 4p
47
1000A 4p
Chapter 3 – Battery Installation
Cable entry
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Page 3-5
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