Avaya S8700 Maintenance Manual page 727

AC-POWER
Nominal Power Holdover
Multicarrier Cabinets
Two types of battery holdover are available:
The small battery assembly provides short-term battery holdover. If AC
power fails, 48 VDC batteries power the system for:
— 15 seconds in an EPN cabinet
— 10 minutes in the expansion control carrier in the "A" position of an
Some AC-powered multicarrier cabinets (MCCs) contain three 48-Volt
batteries and a battery charger (397C) to provide backup power in case
power is interrupted. The holdover times are identical to those above.
Single-Carrier Cabinets
A holdover circuit in the power supply allows a system to operate normally during
AC power interruptions. When AC input power fails, reserve batteries supply
power to the memory and processor circuit packs and fans for two minutes. Every
port circuit pack is inactive during this time. The power supply contains a battery
charger to charge the holdover batteries.
Error Log Entries and Test to Clear Values
Table 8-1. AC Power Error Log Entries
Error Aux
Type Data Associated Test
1
0 0 Any
513 Any AC Power Query
test (#78)
1. Run the short test sequence first. If every test passes, run the long test sequence. Refer to each appropriate
test's description, and follow its recommended procedures.
555-233-143
EPN cabinet
Alarm
Level
Any
WARNING
On/Off
Board Test to Clear Value
Any test environment UU sh r 1
OFF test environment UU sh r 1
Issue 1 May 2002 8-5