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Powerware 9315 Parallel Capacity/Redundant System with PHP SSBM
164201373 Rev. A 092402
7.2 Standard Modes of Parallel Operation:
Normal, Battery, and Bypass Modes
With the Parallel Capacity/Redundant system, the system continues to function
automatically to supply AC electrical power to the critical load. There are three
standard operation modes:
• In Normal mode, Parallel Capacity/Redundant system functions normally,
suppling clean, filtered power fro m the UPMs to the load.
• In Bypass mode, the SSBM bypass input supplies the load and isolates the
UPMs.
• In Battery mode, t he battery cabinet supplies DC power, which maintains UPM
operation.
The following descriptions provide the Parall el Capacity/Redundant system
operating mode differences.