GE Industrial Solutions Off Line Equalization (OLE) - Manual (Page 30)

Off Line Equalization Panel and Converter for GPS4848/GPS4812
6 - 6 Off Line Equalization Operation Issue 4 January 2008
Equalization Completion
Introduction As indicated previously, equalization can be terminated by the
automatic timer in the converter or by switching off the converter
manually. Use the following procedure to return the plant to normal
operation after termination of the equalization process.
Returning to
Normal Operation
Returning to Normal Operation
Step Action
1 Switch the converter to the off (Standby) state and return
the battery string to the main charge bus by disconnecting
the converter output connector from the battery string
position and returning it to the home position.
2 Replace the battery fuse, noting the following warning.
Warning
The equalization process raises the battery string
voltage considerably above the plant bus voltage.
Before reconnecting the battery string to the charge
bus, allow the battery string to self-discharge back to
a voltage close to the plant float voltage (V
f
). This will
take 10-60 minutes, depending on the capacity of the
battery string and the equalization voltage used.
Failure to allow the battery string to self-discharge
may result in damage to the fuse connector contacts
and possible personal injury.
3 Once the battery has self-discharged and the battery fuse
has been replaced, replace the battery pilot fuse.