Powerware 9315s manual Operation of the Optional System Maintenance Bypass SMB

10.4Operation of the Optional System Maintenance Bypass (SMB)

The optional System Maintenance Bypass (SMB) is available with electrical controls. The SMB electrical controls are available with or without Redundant CBP controls. Operations of each configuration is detailed below.

CAUTION:

The critical load is not protected while the Parallel Capacity/Redundant

system is in Maintenance Bypass or Bypass mode.

10.4.1Operation with Electrical 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 shutdown SSBM and UPMs, follow procedure under SSBM Shutdown to Bypass.

6.On SSBM, open CBP and FBP breakers.

Powerware 9315 Parallel Capacity/Redundant System with PHP SSBM	10--15
164201373 Rev. A 092402