Powerware 9315s - Manual (Page 106)

10--16 Powerware 9315 Parallel Capacity/Redundant System with PHP SSBM
164201373 Rev. A 092402
Transfer from Maintenance Bypass:
1. If system was shut down, follow Manual Start or Auto Start procedure to start
system.
2. Ensure SSBM is on bypass.
3. On SSBM, turn the Maintenance Bypass key switch to the right
(FROM MAINTENANCE) momentarily.
4. Observe MIS closes and MBP opens. System is now in bypass mode.
10.4.2 Operation with Electrical Controls with Redundant CBP
Controls
NOTE: Refer to Drawing 164201373---11 in Appendix A for the location of the
Maintenance Bypass key switch.
Transfer to Maintenance Bypass:
1. Ensure power is supplied to the MBP breaker input before attempting transfer
to maintenance bypass.
2. On SSBM, ensure that SSBM CBS breaker is open or system is not on inverter.
3. On SSBM, turn the Maintenance Bypass key switch to the left
(TO MAINTENANCE) momentarily.
4. Observe MBP closes and MIS opens. System is now on maintenance bypass.
5. To shut down SSBM and UPMs, follow procedure under SSBM Shutdown to
Bypass.
6. On SSBM, open CBP and FBP breakers.
Transfer from Maintenance Bypass:
1. If system was shut down, follow Manual Start or Auto Start procedure to start
system.
2. Ensure SSBM is on bypass.
3. On SSBM, turn the Maintenance Bypass key switch to the right
(FROM MAINTENANCE) momentarily.
4. Observe MIS closes and MBP opens. System is now in bypass mode.
WARNING:
Power is available at CBP and FBP inputs, until upstream SSBM bypass input
feeder circuit breaker is opened.
WARNING:
Power is available at CBP and FBP inputs, until upstream SSBM bypass input
feeder circuit breaker is opened.