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Installation Information
MIB:
MAINTENANCE ISOLATION BREAKER
MBP:
MAINTENANCE BYPASS BREAKER
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.
A-8
EATON Powerware
AC INPUT
To UPS
Input
Output
from
UPS
MAINTENANCE
BYPASS PANEL
(PROVIDED BY OTHERS)
K5
Backfeed
BATTERY CABINET
TYPICAL MAINTENANCE BYPASS PANEL POWER FLOW
9390 UPS (100–160 kVA) Installation and Operation Manual S 164201554 Rev E powerware.com
®
MBP
MIB
STATIC
SWITCH
K3
UPS
BATTERY
BREAKER
DESCRIPTION:
UPS SYSTEM ONELINE DRAWING
DRAWING NO:
164201554---4
REVISION:
C
CRITICAL LOAD
DISTRIBUTION
UNIT
SHEET:
3 of 6
DATE:
081505
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