Electrical characteristics, Selection of protection devices, Appendices – APC GALAXY 5000 User Manual
Page 61
34001813EN/AE
- Page 61
7. Appendices
Electrical characteristics
Selection of protection devices
UPS short-circuit current with inverter coupled and By-pass AC source out of tolerances:
UPS unit with common normal and Bypass AC inputs
UPS unit with separate normal and Bypass AC inputs
When sizing the upstream circuit breakers, the parameters presented below must be taken into account:
Time/current curves for UPS input and output fuses:
Sn
20 kVA
30 kVA
40 kVA
60 kVA
80 kVA
100 kVA
120 kVA
In
29 A
43 A
58 A
87 A
115 A
144 A
173 A
Limitation
190 A
190 A
190 A
240A
360 A
480 A
480A
14
Q1
16
Q4S
Q5N
15
Normal AC
Bypass AC
Upstream
circuit breaker
(not supplied)
Downstream
circuit breaker
(not supplied)
Output
fuses
Input
fuses
Load
14
Q1
16
Q4S
Q5N
15
Upstream
circuit breaker
(not supplied)
Downstream
circuit breaker
(not supplied)
Normal AC
Bypass AC
Upstream
circuit breaker
(not supplied)
Output
fuses
Input
fuses
Load
10
4
10
3
10
2
10
1
10-
1
10-
2
10-
3
10-
4
10
4
10
3
10
2
10
I (A)
t (s)
80 kVA : 160A
100-120 kVA : 315A
60 kVA : 125A
20-30-40 kVA : 80A