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Installation Guide APC Silcon 480kW 400V UPS 61
6.6.1 Connecting Isolation Transformer
*DIN gL types
PVC cables insulated to withstand a maximum ambient temperature of 30°C
Isolation
Transformer
UPS External
Input
Fuses* FM
[A]
380-415V
External
Input Cable
[mm
2
]
380-415V
External PE
Cable
[mm
2
]
External
Output
Cable
[mm
2
]
External
Temp. Signal
Cable
[mm
2
]
540kW 480kVA 1000 3//200 200 3//200 2
NOTICE!
If an MCCB is used in stead of external input fuses, the MCCB load capacity must be 8xIn
(nominal current) for minimum 10 ms.
NOTICE!
Check correct phase rotation of mains input voltage! Maximum input/output cables: 3//300 mm
2
.
If input neutral is not available, an optional Dzn0 or Dyn11 input isolation transformer must be
used.
NOTICE!
All external cable dimensions are recommended sizes only. Refer to local legal regulations.
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