Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
8 - 16 Spare Parts and Replacement Procedures
Issue 10 July 2000
DC Capacitors (C7
through C12)
DANGER: DC capacitors may be charged even with power
disconnected from the rectifier. If filter capacitor fuses have blown,
capacitors will be charged. Always check all of the dc capacitor
terminals (observe polarity) with a voltmeter before performing
this procedure, and discharge capacitors safely, if necessary. Wait
at least 5 minutes after shutting down ac and CB1 before working
on capacitors or associated buswork.
Note: All output capacitors should be replaced if any are being replaced.
1. DC Capacitors C7, C9, C11, and C12 are mounted in a column on
the left of C8 and C10 as shown in Figure 8-1. The capacitors are
located behind the capacitor bus bars. The bus bars are mounted
directly to the capacitors by the capacitor terminal screws. In order
to remove a capacitor from either column, remove fuse board
CM1, the capacitor terminal screws, mounting screws, and the
screw supporting the fuse assembly. Note that this completely
frees the capacitor bus bar in question.
2. Remove the capacitor from its clamp by pulling toward you on the
capacitor.
3. Replace the capacitor by pushing it into the clamp with the
positive terminal toward the inside.
4. Replace the negative bus bar. Tighten the mounting screws first
and then the capacitor terminal screws.
5. Replace the fuse assembly. Replace fuse if required.
CB1 Circuit
Breaker
1. Remove the output cables to the rectifier.
2. Remove the bolts securing the input bus bar to the circuit breaker.
3. Support the breaker and remove the four screws securing the
breaker to the side upright. Note that there are two alarm
connections attached to the rear of the breaker. Remove these once
the breaker is free.
4. Reinstall in reverse order.
