Previous in Forum: CBIP   Next in Forum: Generator Tripping Problem
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
3 comments
Rate Comments: Nested
Anonymous Poster

Load Tap Changer

02/12/2011 3:43 PM

Is there someone with bad experience with Ferranti Packard LTC? we have changed the diverter switch of the LTC few years ago for lagging reasons. Now the new one exihbiting the same problem, the winding resistance test shows open circuit and it sounds the lagging problem of the diverter switch. Every time we change is a $30,000 cost. Now Siemens took over Ferranti Packard and they are not repairing for spring tension or any problem, but they sell the replacement diverter as the whole assembly. any one with this experience, any feed back.

Thanks
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
mountk2
Power-User

Join Date: Jun 2010
Posts: 348
Good Answers: 10
#1

Re: Load Tap Changer

02/12/2011 10:17 PM

One approach is to look into the matter when all goes wrong but the sensible thing is to do periodic inspections and preventive maintenance.

Why does the LTC is overworked, check that the datum operating values for the LTC are correct. Find out the effects, mitigate the real cause.

__________________
 Knowledge sharing is a WIN-WIN situation
Reply
Anonymous Poster
#2

Re: Load Tap Changer

02/14/2011 9:13 AM

Can you provide the LTC model? Was there no failure analysis the first and/or last time the switch was replaced?
Reply
Anonymous Poster
#3
In reply to #2

Re: Load Tap Changer

02/14/2011 10:09 AM

Ferranti Packard, Model 25 RT62, the only problem is the diverter switch lagging and creates open circuit (make before break function not happening because of a lagging problem)

Thanks,
Reply
Reply to Forum Thread
Have a Different Question?
3 comments

Previous in Forum: CBIP   Next in Forum: Generator Tripping Problem

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (89 right now)
Show Members
Advertisement