Recommended Circuit Breakers - Huawei UPS5000-H-600 User Manual

UPS5000-H-600 kVA-FTN
User Manual (Singapore, 100 kVA Power Modules)

4.2.2 Recommended Circuit Breakers

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Table 4-1 Recommended input/output circuit breakers
Component Name
Mains input circuit breaker
Bypass input circuit breaker
Downstream output circuit breaker
a: recommended model when the short-circuit current where the circuit breaker is located is less
than 65 kA
Issue 02 (2023-11-07)
The input circuit breakers recommended are for reference only.
The bypass input circuit breaker and downstream output circuit breaker
specifications are recommended based on the rated UPS capacity. If the UPS
needs to be overloaded, adjust the switch specifications based on the
overload current.
The maintenance bypass circuit breaker is recommended based on the
scenario where a single UPS is used. In a parallel system, adjust the circuit
breaker specifications based on the total current.
The UPS can generate large leakage currents. A circuit breaker equipped with
a residual current device (RCD) is not recommended.
If multiple loads are connected, use recommended specifications for branch
circuit breakers.
Select proper circuit breakers to protect loads and cables, and cascade them
properly to achieve selective protection.
Specifications
1250 A/3P
1000 A/3P
1000 A/3P
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4 Installation and Cable Connection
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