APC GALAXY 5000 - Manual (Page 14)

34001813EN/AE - Page 14
2. Installation
2.4 Required protective devices and cable sizes
Recommended upstream protection
Recommended downstream protection
Earth-leakage current
UPS earth-leakage current is 1 A.
UPS
power
rating
Upstream circuit-breaker on
separate Normal AC input
Upstream circuit-breaker on
separate Bypass AC input
Upstream circuit-breakers on
common bypass and Normal AC
input
20 kVA C60L - 50 A NS100N 4P-TM100A NS100N 4P-TM100A
30 kVA C60L - 63 A NS100N 4P-TM100A NS100N 4P-TM100A
40 kVA NS100N 3P-TM80A NS100N 4P-TM100A NS100N 4P-TM100A
60 kVA NS125E 3P-TM125A NS125E 4P-TM125A NS125E 4P-TM125A
80 kVA NS160N 3P-TM160A NS160N 4P-TM160A NS160N 4P-TM160A
100 kVA NS250N 3P-TM200A NS250N 4P-TM250A NS250N 4P-TM250A
120 kVA NS250N 3P-TM250A NS250N 4P-TM250A NS250N 4P-TM250A
The circuit breakers recommended above respect the requirements for discrimination with the UPS fuses
Stick a label with the following text on each upstream circuit breaker:
"Isolate Uninterrptible Power Supply (UPS) before working on this circuit".
UPS power rating Downstream
circuit breaker
Trip unit Curve N for the downstream circuit breaker
may be replaced by curve H or L, depending
on the installation.
The indicated protection ensures
discrimination for each output circuit
downstream of the UPS, whether supplied by
via the normal or the Bypass AC source. If
these recommendations are not followed, a
short-circuit on an output circuit can result in
a break in power longer than 20 milliseconds
on all the other output circuits.
20-30-40 kVA C60N C 16A
C60N B 25A
60 kVA C60N C 20A
C60N B 32A
80 kVA C60N C 25A
C60N B 50A
100-120 kVA C60N C 32A
C120N B 63A
NS100 TMG 50A
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.