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64 Installation Guide APC Silcon 480kW 400V UPS
990-4053
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6.5.2 Wiring up UPS with External Yyn0 Isolation Transformer at Output
WARNING!
Isolation transformer provides galvanic isolation between mains supply and load. Load will loose
galvanic isolation if isolation transformer is bypassed
NOTICE!
Refer to local legal regulation for wiring information.