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6.5.1 Connecting Isolation Transformer

NOTICE!

Check correct phase rotation of mains input voltage! Maximum input/output for cables: 3//300 mm2. 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.

NOTICE!

Make sure that gland plate is installed in bottom of cabinet.

CAUTION!

At 100% switch mode load, neutral must be rated for 200% phase current

990-4053

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Installation Guide APC Silcon 480kW 400V UPS

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APC 990-4053 manual Connecting Isolation Transformer