×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

GE JBC Relay - Need Info

GE JBC Relay - Need Info

GE JBC Relay - Need Info

(OP)
I'm looking for the manual on an early type JBC Relay: Model 208A8458 G-2

The publication on the nameplate is 'GEK-36836', which is not on GE's website, and the folks at GE say doesn't exist, but that doesn't make sense because it's clearly engraved on the relay.

I am specifically looking for the Connection/Wiring diagrams and any other pertinent info so I can compare them to a 12JBC53P1A, which I am replacing with.

Thanks in advance for anyone who can help

RE: GE JBC Relay - Need Info

GE and Westinghouse used to make special runs of relays for large utilities.  If GE can't find anything and it's a really old model, you may be SOL.  

But these things don't have Intel processors in them, so the wiring can usually be traced out.  The target and seal-in units are easy enough to trace back as are the CT inputs due to the shorting fingers.  You'll need to figure out the polarizing inputs.  Not sure how you ordered a replacement if you are not sure what you have....   

RE: GE JBC Relay - Need Info

(OP)
Thanks for the link, however I already have looked through those and couldn't find what I'm looking for.

"Not sure how you ordered a replacement if you are not sure what you have..."

I am sure it is what we want since we use that model on the rest of our similar feeders for 67 protection, these were the only oddball ones.

I cannot take that feeder out of service easily so I don't want to go poking around the wiring until I know finding diagrams is impossible. Right now we are relying on 2 of the phases plus the ground for protection, which should cover any fault.

RE: GE JBC Relay - Need Info

avogel

What is the Model number for the original one you are looking for. Usually the Model number starts with 12JBC the part number is 208A8458-G-2.  You are trying to replace it with a 12JBC53P1A so what is the 12JBC number for the original?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources