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Chapter 4 Prerequisites for the UPS installation
Change in SEA between upstream and downstream or galvanic isolation required
The transformer is not necessary if:
Normal and Bypass inputs are connected to the same source,
•
and wires cross-sections and lengths of Normal and Bypass inputs are identical,
•
and upstream protection is provided by only one switch with RCD (Residual Current
•
Device) for Normal and Bypass AC inputs.
UPS with separate Normal and Bypass AC inputs, supplied by separate sources
Change in SEA between upstream and downstream or galvanic isolation required
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
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