UPS5000-E-(25 kVA-75 kVA)-SM
User Manual (Half Height)
3 Installation
Issue 03 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
43
The currents listed in the table are measured at a rated voltage of 380 V; if the rated
voltage is 400 V, multiply the currents by 0.95; if the rated voltage is 415 V, multiply the
currents by 0.92.
When primary loads are non-linear loads, increase the cross-sectional areas of neutral
wires to 1.5–1.7 times.
Nominal battery discharge current: the current at a voltage of 480 V when thirty-two 12
V batteries are configured.
Maximum battery discharge current: the current upon end of discharge when thirty-two
12 V batteries are configured, namely, discharge current in the case of 240 2 V battery
cells with 1.67 V/cell.
The battery cable specifications are selected based on 30 batteries by default and
compatible with application scenarios with 30–44 batteries.
To prevent short circuits, refer to
for the specifications when selecting DT
terminals.
When connecting power cables, comply with the tightening torque listed in
ensure secure connections and prevent safety risks.
Table 3-3
Power cable DT terminal requirements
Port Description Bolt Specifications Bolt Hole Diameter
Torque
Mains input
M8 x 30
9 mm
20 N·m
Bypass input
M8 x 30
9 mm
20 N·m
Battery input
M10 x 30
11 mm
35 N·m
Output
M8 x 30
9 mm
20 N·m
PE
M8 x 20
9 mm
13 N·m
The UPS can generate large leakage currents. A circuit breaker equipped with an RCD is not
recommended.
Table 3-4
Recommended input front-end and output back-end circuit breakers
UPS
Capacity
Component
Specifications
Fixed value
25 kVA
Mains input circuit breaker
80 A/3P
80 A
Bypass input circuit breaker
63 A/3P
63 A
Output branch circuit
breaker
63 A/3P
63 A
