Lucent Technologies Lineage
®
2000 50A Ferroresonant Rectifier J85502B-1
Issue 6 May 1999
Spare Parts and Replacement Procedures 8 - 11
•
DC capacitors can be examined to see if they have “blown”
(i.e., vented) due to voltage breakdown failure. A small hole
in the capacitor top, called a “blowhole,” is plugged in a
new or good capacitor, but is empty (blown out) in a failed
unit. Some capacitor blowholes cannot be viewed directly
until removed, or almost removed, from the rectifier. A
dental-type mirror aids in viewing these capacitors'
blowholes before disassembly. Lucent Technologies
recommends that all dc capacitors in a rectifier be replaced
whenever any one of them blows.
•
Procedures for testing and replacing individual rectifier
diodes are provided in “Replacing Components.” Also
provided in the same group of instructions is the procedure
for taking apart bolted and insulated connections, such as
those used on large transformer leads.
•
All removal and replacement procedures are easier to
perform on bay-mounted rectifiers that have been removed
from the bay.
Most component removals are straightforward and obvious.
Therefore, these procedures can be used as a guide by qualified
service personnel, rather than as step-by-step procedures. For
example, you may prefer to remove a part not called for in order
to make more room for access to a component being replaced.
Tables 8-D and 8-E provide the reassembly torquing
requirements for the electrical and mechanical connections in
the rectifier. Use these values unless otherwise directed in the
procedures.
