APC GALAXY 7000 - Manual (Page 59)

Electrical characteristics >
34020846EN/AD - Page 59
2. Appendices
2.3 Electrical characteristics
Selection of protection devices
UPS short-circuit current with inverter coupled and bypass AC source out of tolerances
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 250 kVA 300 kVA 400 kVA 500 kVA
In (at 400 V) 361 A 433 A 577 A 721 A
Isc 1085 A 1085 A 1446 A 1975 A
Q1
Q4S
Q5N
NORMAL AC
BYPASS AC
Upstream
CB
(not supplied)
Downstream
CB
(not supplied)
output
fuses input
fuses
Upstream
CB
(not supplied)
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)
400 kVA : 800A
500 kVA : 1000A
250-300 kVA : 630A