Lucent Technologies Enhanced VR Series Batteries
Issue 5 December 1998 Maintenance 8 - 3
batteries have been on continuous, uninterrupted float
operation for at least one month.
Measuring
Battery
Temperatures
Make temperature measurements using calibrated equipment,
such as an infrared-based or thermocouple-based measuring
device. Make all measurements on the negative terminal of the
selected batteries. If using a thermocouple device, place the
sensor on the negative terminal of the battery and wait a few
seconds for the meter to stabilize. Note the measured value in the
appropriate column on the “Temperature Measurement on
Selected Batteries” portion of the Installation and Maintenance
Record.
String Current
Measurement
Use a calibrated DMM and current probe placed around a string
cable to make individual battery string current measurements.
Note the measured value in the appropriate column in the “String
Float Current Measurements” portion of the Installation and
Maintenance Record.
Inspection and
Cleaning
A visual inspection of the battery plant should be done on a
quarterly basis. If necessary, the battery modules and racks can
be cleaned using a soft cloth dampened in water or approved
battery-cleaning solution. The inter-battery connections should
be inspected for corrosion. Report any sign of acid or corrosion
to Lucent Technologies.
Retorquing
Inter-battery
Connections
The 4VR and 2VR batteries are made from 2-volt, 125Ah cells
connected in series or parallel, respectively. These connections
are made during manufacturing and should never need
retorquing under normal circumstances.
The inter-battery connections are made during installation and
will require periodic retorquing. Using an insulated 7/16-inch
socket, retorque these connections to 60 inch-pounds.
Caution
Over-tightening of the inter-module connectors could strip
the bolt and/or nut threads, resulting in loose connections.
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