NOTE If installing, as part of the UPS system, a maintenance bypass without a rectifier input breaker, a minimum of two separate feeds with upstream feeder breakers, or one feed with two upstream feeder breakers, must be provided: one for the UPS and one for the maintenance bypass input. DO NOT use one feed or a single-feeder breaker to supply both the UPS and the maintenance bypass.

Figure 4-6. Typical maintenance bypass panel

1027574

UPS 450 - 550 kVA (2x225 - 2x275 kVA)

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Revision B

User’s and Installation Guide