GE Switchgear

[Thedroid]

Anybody have any experience with GE M26 medium voltage switchgear for Magne-blast draw out circuit breakers?

 

[ddawg16]

Medium Voltage? Thats a whole different ball game.....

480 V MCC's...yea...I have lots of experience....but medium voltage?....your talking walk in cabinets....and you don't go near it unless you are certified for medium voltage......

Nasty stuff.....

 

[ArthurPE]

yes, what's your question

 

[Thedroid]

Thanks. I'm looking for the original insulating compound used in the covers where the bus connects to the primary disconnects. I work with MV, but cannot seem to find any info on this. My switchgear manual list the compound as GE D50H49, but I can't find any info on that either. I sent an email to GE hoping to get a suitable replacement, but we'll see.

 

[ArthurPE]

Thanks. I'm looking for the original insulating compound used in the covers where the bus connects to the primary disconnects. I work with MV, but cannot seem to find any info on this. My switchgear manual list the compound as GE D50H49, but I can't find any info on that either. I sent an email to GE hoping to get a suitable replacement, but we'll see.

that's far more detailed information than I have access to...

try these guys...they just got a Fed contract to rebuild a bunch of them...

Gearhart McKee, Inc.
47 Walnut Street, Suite 200
Johnstown, Pennsylvania 159011528
United States

 

[Stuart in MN]

Putting "medium voltage insulating compound" into a google search turns up several possibilities.

 

[foolishpride]

My company does testing and maintenance of 5 KV and 15 KV G.E. Magnablast breakers. I know the compound you are talking about, but I'm not sure what is used to replace it. I've never had to replace the compound in these breaker bottles. But I do know of insulating compounds made by G&W Electric that we use frequently for re-pouring high voltage pothead cable terminations. What we use mostly is called No-Void A. Here is link to their insulating compounds:

http://www.gwelec.com/pdfs/ca1-80/CA1-51D(pgs15-17).pdf

 

[Mellotron]

www.powerlineman.com might be a better venue to get that question answered.

 

[69Cat]

You mean the connections like in the attached picture of some 5 kV gear I redid the bus work on?

If so, I get these insulating boots from Phoenix Manufacturing in Ontario, www.phnxmfg.com. Usually they are custom made to the dimensions you specify, a custom mold can be made to pretty much anything you can draw. I use them on 5 kV and 15 kV gear all the time. A good way to eliminate those potted connections you are referring to, just slip the boot over the bare connection and it is insulated to +25 kV (they rate them for 50 kV I beleive).

Ken

 

[foolishpride]

You mean the connections like in the attached picture of some 5 kV gear I redid the bus work on?

If so, I get these insulating boots from Phoenix Manufacturing in Ontario, www.phnxmfg.com. Usually they are custom made to the dimensions you specify, a custom mold can be made to pretty much anything you can draw. I use them on 5 kV and 15 kV gear all the time. A good way to eliminate those potted connections you are referring to, just slip the boot over the bare connection and it is insulated to +25 kV (they rate them for 50 kV I beleive).

Ken

I believe he means the compound inside the porcelain bottles.