Eaton EX RT 7/11 Manuel D'installation Et D'utilisation page 22

2. Installation
2.6 Required protective devices and cable cross-sections
Recommended upstream protection
Note: see the simplified diagrams in the appendix for common or separate AC inputs, indicating the
positions of the protection devices, the characteristics of the internal UPS fuses and UPS line currents
under overload conditions.
Recommended downstream protection
Note: see the simplified diagrams in the appendix for common or separate AC inputs, indicating the
positions of the protection devices, the characteristics of the internal UPS fuses and UPS line currents
under overload conditions.
Required cable cross-sections
Terminal-block cable capacity: 10 mm², solid or stranded wire (maximum 13 mm² or AWG 6).
z
Capacity for earthing conductor: 10 mm², solid or stranded wire (maximum 13 mm² or AWG 6).
z
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UPS power
rating circuit-breaker
7 kVA
11 kVA
UPS power
rating circuit breaker
7 kVA
11 kVA
Upstream
D curve - 40 A
D curve - 63 A
Downstream
Z curve - 10 A
C curve - 4 A
Z curve - 10 A
C curve - 6 A
The indicated protection ensures
discrimination for each output circuit
downstream of the UPS, whether
supplied by the Normal or the Bypass
AC source.
If these recommendations are not
followed, protection discrimination
is not achieved and may result in a
potential power interruption to the
connected devices.