Eaton UPS 225275 kVA Powerware 9395 User's Installation Manual page 47

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
Revision B
UPS 450 - 550 kVA (2x225 - 2x275 kVA)
User's and Installation Guide
47