GE JBC Relay - Need Info

[avogel]

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

 

[davidbeach]

Go to

http://www.gedigitalenergy.com/app/ViewFiles.aspx?prod=jbc&type=3

and see if anything there helps.

 

[dpc]

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....

 

[avogel]

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

"[small]Not sure how you ordered a replacement if you are not sure what you have...[/small]"

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.

 

[electrageek]

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?