Lucent Technologies Enhanced VR Series Batteries
Issue 5 December 1998 Installation 6 - 9
volts because the chargers are turned off. If a larger
differential exists, the string should be charged at the plant
voltage (or the plant voltage lowered) until the voltage
differential is less than 0.05 volts. This should prevent
arcing during the final connection.
4. After the battery strings have been connected to the plant
bus for one hour, make the final reading to record voltages
of individual batteries. (See “Individual Battery Voltages”
in Section 8,
Maintenance,
for measurement procedure.)
Record these in the Installation and Maintenance Record.
A DMM (digital multimeter) is suitable for battery voltage
readings. The accuracy of an equivalent meter should be 0.05
percent on the dc scale. The meter must be checked periodically
for accuracy and calibration.
After recording these initial measurements, the installer should
turn the Installation and Maintenance Record over to the
maintenance organization as part of their permanent records. See
Section 8,
Maintenance
, for maintenance routines and
measurements that must be recorded.
Caution
Exercise extreme caution when making voltage readings
to prevent accidental grounding or shorting of leads
during measuring operations. Connections at the meter
must be secure and free of any possibility of touching or
becoming grounded. Never remove connections at the
meter end without first disconnecting the test leads from
the battery. Remove test lead connections at the battery
immediately after each reading is taken. Review the safety
precautions in Section 4.
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