Options/accessories – APC SILCON 990-4053 User Manual
Page 62
62
Installation Guide APC Silcon 480kW 400V UPS
990-4053
Options/Accessories
6.5.1 Connecting Isolation Transformer
NOTICE!
Check correct phase rotation of mains input voltage! Maximum input/output for 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.
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
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