APC mgetm galaxytm 6000 User Manual
6739381EN/
Appendix
(to be carried out by qualified personnel only)
Mains 2 line protection
UPS 250 to 450kVA
rated inverter output
maximum permissible current
(kVA)
250 to 300
10 In for 20 ms
400 to 450
13 In for 20 ms
500 to 600
27 In for 20 ms
Time-current curve 630A fuse
10
-4
10
-3
10
-2
10
-1
10
1
1
10
2
10
3
10
4
t(s)
10
2
10
3
10
4
I(A)
UPS 600kVA
Time-current curve 1250A fuse
10
-4
10
-3
10
-2
10
-1
10
1
1
10
2
10
3
10
4
t(s)
10
2
10
3
10
4
I(A)
The rating of the mains 2 line upstream
protection circuit-breaker must be
chosen:
protection circuit-breaker must be
chosen:
◗
to protect the static switch thyristors
with respect to maximum permissible
currents. Refer to the table opposite for
a 400V mains 2 voltage;
currents. Refer to the table opposite for
a 400V mains 2 voltage;
◗
to ensure discrimination with respect
to the UPS output fuses (refer to fuse
time-current curves below) and to the
downstream protective devices.
time-current curves below) and to the
downstream protective devices.
UPS 500kVA
Time-current curve 800A fuse
10
-4
10
-3
10
-2
10
-1
10
1
1
10
2
10
3
10
4
t(s)
10
2
10
3
10
4
I(A)