Required Protective Devices And Cable Cross-Sections; Recommended Upstream Protection; Recommended Downstream Protection; Required Cable Cross-Section - Eaton EX RT 7 Installationsaleitung

2. Installation

2.6 Required protective devices and cable cross-sections

Recommended upstream protection

UPS
power
rating
5 kVA
7 kVA
11 kVA
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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Common AC inputs
Upstream circuit-breaker
Normal / Bypass AC sources
D curve - 40 A
D curve - 40 A
D curve - 63 A
UPS power
rating circuit breaker
5 kVA
7 kVA
11 kVA
Upstream circuit-breaker
Normal AC source
C curve - 32 A
C curve - 32 A
C curve - 40 A
Downstream
Z curve - 10 A
C curve - 4 A
Z curve - 10 A
C curve - 4 A
Z curve - 10 A
C curve - 6 A
Separate AC inputs
Upstream circuit-breaker
Bypass AC source
D curve - 40 A
D curve - 40 A
D curve - 63 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.