APC MGETM GALAXYTM 6000 User Manual download pdf (Page 35)

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

-4

-3

-2

-1

t(s)

I(A)

UPS 600kVA

Time-current curve 1250A fuse

-4

-3

-2

-1

t(s)

I(A)

The rating of the mains 2 line upstream

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;

◗ to ensure discrimination with respect

to the UPS output fuses (refer to fuse

time-current curves below) and to the

downstream protective devices.

UPS 500kVA

Time-current curve 800A fuse

-4

-3

-2

-1

t(s)

I(A)

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 45 46

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APC MGETM GALAXYTM 6000 User Manual Page 35

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