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POWER
Issue 1 June 2005 1879
Battery Holdover (Large Batteries)
The large batteries are mounted inside a separate battery cabinet and can supply holdover
times of 2 to 8 hours depending on the size of the battery. The batteries are circuit breaker
protected and are charged by the J58890CH-1. The batteries also contain a thermal sensor that
change the charging voltage depending on the battery temperature.
System Technician-Demanded Tests:
Descriptions and Error Codes
Investigate tests in the order presented below. Clearing Error Codes associated with the one
test may also clear errors generated from other tests in the sequence.
Notes:
a. See AC-POWER
on page 333 for a description of this test.
b. See CARR-POW (Carrier Power Supply)
on page 770 for a description of this test.
Order of Investigation Short Test
Sequence
Long Test
Sequence
D/ND
1
1. D = Destructive, ND = Nondestructive
Battery and Battery Charger Query test (#5) X X ND
AC Power Query test (#78) (a
)XXND
Power Unit Query test (carrier E) (#127) (b
)X XND
Power Unit Query test (carrier D) (#127) (b
)X XND
Power Unit Query test (carrier A) (#127) (b
)X XND
Power Unit Query test (carrier B) (#127) (b
)X XND
Power Unit Query test (carrier C) (#127) (b
)X XND
Emergency Transfer Query test (#124) (c
)X XND
Cabinet Sensors Query test (#122) (d
)XXND
External Alarm Lead Query test (#120) (e
)X XND
Analog Ring Generator Initialization test (#117)
(f
)
XXND
Analog Ring Generator Query test (#118) (f
)X XND