Required Protective Devices And Cable Cross-Sections; Recommended Upstream Protection; Recommended Downstream Protection; Required Cable Cross-Sections - MGE UPS Systems 4000 RT Installation And User Manual

2. Installation

2.6 Required protective devices and cable cross-sections

Recommended upstream protection

Recommended downstream protection

Required cable cross-sections

◗ Terminal-block cable capacity: 6 mm
◗ Capacity for earthing conductor: 6 mm
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34008030EN/AA
UPS power rating
4000 RT
5000 RT
2 poles circuit breaker
UPS power rating
4000 RT
5000 RT
2
Upstream circuit breaker
D curve - 32A
D curve - 32A
To UPS Normal AC source
Downstream circuit breaker
Z curve - 10A
C curve - 4A
Z curve - 10A
C curve - 6A
, solid or stranded wire (maximum 8 mm
2
, solid or stranded wire (maximum 8 mm
The indicated protection ensures
discrimination for each output circuit
downstream of the UPS.
If these recommendations are not followed,
protection discrimination is not achieved and
may result in a potential power interruption to
the connected devices.
The indicated protection ensures
discrimination for each output circuit
downstream of the UPS.
If these recommendations are not followed,
protection discrimination is not achieved and
may result in a potential power interruption to
the connected devices.
2
or AWG 8).
2
or AWG 8).