Maintenance-Object Repair Procedures
555-233-143
8-398
Issue 1 May 2002
Uninterruptible Power Supply
An external UPS provides a longer backup time than holdover batteries and can
replace the batteries and battery charger. The unit connects from the AC power
source to a cabinet’s AC power cord. If AC power fails, the unit supplies its own
AC power to the cabinet.
J58890CH-1
In AC-powered cabinets, the power-distribution unit (J58890CH-1), distributes
170 to 264 VAC from a wall outlet to a set of BU3200A Battery Interface Units
(BIU). See
and
Figure 8-18.
AC Power-Distribution Unit (J58890CH-1)
—
Front
Circuit
Breakers
Rectifier
Modules
Ring
Generator
Ring Generator
Fuse
Battery
Interface
Unit
j58890ch RBP 071596
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...