UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
3 Installation
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
56
Connector Connection Mode
Bolt
Type
Bolt Hole
Diameter
Torque
Output
connector
Crimped DT terminals
M16
18 mm
120 N•m
Grounding
connector
Crimped DT terminals
M12
-
47 N•m
The UPS can generate large leakage currents. A circuit breaker that provides leakage current
protection is not recommended.
Table 3-7
Recommended input front-end and output back-end circuit breakers
UPS
Capacity
Component
Specifications
a
400 kVA
Mains input circuit
breaker
800 A/3P
Bypass input circuit
breaker
630 A/3P
Output branch circuit
breaker
630 A/3P
Circuit breakers are used in circuits with a short-circuit current of less than 50 kA.
The input front-end and output back-end circuit breakers recommended in
are for
reference only.
If multiple loads are connected, branch circuit breaker specifications must not exceed the
recommended specifications.
The circuit breaker selection principle is to protect loads and cables, and the cascading principle is to
realize specific protection.
3.2 Single UPS Installation
UPSs in standard configurations and full configurations have the same installation procedures
and cable connection modes. This section uses UPSs in full configurations as an example.
3.2.1 Installing a UPS
Installing a UPS on the Ground