Site Preparation – Operating Environment
24 AIS® 3000 10-40kVA, 400V, Site Preparation and Installation Manual – 990-2258
Minimum setting of breakers for 40kVA UPS
Note 1: For the output value, the short-circuit level is indicated.
Recommended phase-conductor sizes for a 30°C temperature environment
)
Overload
Event Mains input Bypass input Output Duration Notes
Internal fault 3 kA 2.3kA 14 kA <10 ms 1
800%
overload
bypass
operation
- 487A 487A 500ms
150%
overload
normal/battery
operation
- - 91.2A 30s
125%
overload
normal/battery
operation
- - 76A 60s
Continuously 65.6A 66.9A 66.9A ∞
UPS/[mm2] sizes Mains input
[mm2]
AC output
[mm2]
DC input
[mm2] 70°C Wire
10kVA 2.5 2.5 6
15kVA 6 6 10
20kVA 10 10 16
30kVA 16 16 35
40kVA 25 25 50
Use Molex lug type or equivalent, and crimp to manufacturer’s specifications.
WARNING!
At 100% non-linear load (EN50091-3 standard), the neutral shall be rated for 200%
phase current.