Lucent Technologies 12IR125, Руководство по эксплуатации продукта

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Lucent Technologies 12IR125 Series II Batteries
7 - 6 Operation Issue 7 December 1999
Discharge Capacity
Test This test is not required as a routine maintenance procedure.
However, a discharge test is the best way to determine if
sufficient reserve power is available.
The discharge capacity test should be run directly off float
charge without prior boost charge. Battery strings to be tested
should be on float for at least one month without a boost charge
or power failure exceeding 30 minutes.
There are several different methods that can be used in testing
the capacity of the string. In general, the more definitive the test,
the longer and more difficult it is to perform. For example,
measuring individual battery voltages after 15 minutes on a plant
load discharge will highlight batteries with only 25% capacity.
However, it usually requires a 5 hour, off-line discharge test to
spot a 5% fading in capacity.
If it is determined that a discharge test should be part of the
maintenance program, try to carry out the test consistently from
site to site and interval to interval. In this way, comparisons and
trends can be easily noted. In selecting a test, the choices are as
follows:
• single battery or string
• partial or full discharge
• constant or variable load
Figure 7-1: Temperature Correction Chart
Temperature Correction for Capacity for the 12IR125 battery
-5
-4
-3
-2
-1
0
1
2
3
4
5
50 55 60 65 70 75 80 85 90 95 100
Battery Temperature (0F) at Start of Discharge
Percent Capacity
Correction