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Site Preparation – Operating Environment
AIS® 3000 10-40kVA, 400V, Site Preparation and Installation Manual – 990-2258 23
Minimum setting of breakers for 20kVA UPS
Note 1: For the output value, the short-circuit-level is indicated.
Minimum setting of breakers for 30kVA UPS
Note 1: For the output value, the short-circuit level is indicated.
Overload
Event
Mains input Bypass input Output Duration Notes
Internal fault 2.5kA 2.3kA 9kA <10ms 1
800%
overload
bypass
operation
- 244A 244A 500ms
150%
overload
normal/battery
operation
- - 45.6A 30s
125%
overload
normal/battery
operation
- - 38A 60s
Continuously 32.5A 33.4A 33.4A
∞
Overload
Event
Mains input Bypass input Output Duration Notes
Internal fault 3 kA 2.3kA 14 kA <10 ms 1
800%
overload
bypass
operation
- 365A 365A 500ms
150%
overload
normal/battery
operation
- - 68.4A 30s
125%
overload
normal/battery
operation
- - 57A 60s
Continuously 49.2A 50.1A 50.1A
∞