Lucent Technologies 415B Battery Plant for 4ESS
7 - 20 Retrofit of 415A Battery Plant
Issue 6 September 1999
Preparation
The following information covers initial settings of equipment
and meter, and the test connections necessary before beginning
the test.
DANGER
AC voltage is present even when the Power switch is in the
Off position.
DANGER
Before turning on any rectifier, be sure that the associated
framework and cable rack are properly grounded per local job
instructions.
Warning
Do not operate the DC Output circuit breaker to On (or turn
an external charge circuit breaker on, or install an external
charge fuse) until told to do so.
Warning
The rectifier output filter capacitors stay charged for several
minutes. Check that they have discharged adequately before
contacting any exposed terminals inside the rectifier. Do not
work on the rectifier until capacitors have discharged below
50Vdc.
Warning
Be sure that connections to circuit packs are not made or
removed with voltages present. Before disconnecting a cable
from a circuit pack, operate the Power switch to Off. If the
control cable is connected, remove the associated REG fuse
from the plant control panel and then disconnect the control
cable. If complete plant connections are to be restored,
operate the Power switch to Off, reconnect the control cable,
and then install the associated REG fuse.
