Buchholz relay testing
Buchholz relay testing
(OP)
Does anyone know of a test set for Buchholz relays? Are there any testing (or transformer) companies that test Buchholz relays?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Buchholz relay testing
RE: Buchholz relay testing
If it's separated from the piping it should be easy to test by manual operation, if in use not readily testable.
David
RE: Buchholz relay testing
Level may be easy enough, if it is possible to lower the level by pumping more air in. That may or may not be possible.
Flow rate is a lot more demanding. I doubt if it is possible to do that test on a live unit. Never seen it done.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Buchholz relay testing
Seems that if you are a NERC registered entity subject to PRC-005, you'd better figure out a method of testing. A visual inspection, or pushing a button to close the contact would be considered adequate to check the device. Pushing the button would verify the tripping path, but not verify the flow sensing mechanism per Table 5 of the standard.
RE: Buchholz relay testing
RE: Buchholz relay testing
You can hold a can or bucket below the bucholz relay so as not to waste the oil. CLose the valves in both sides of relay so that during testing oil shall not come into relay from tank or conservator.
Open the drain plug located in bottom of relay and soon oil will start flowing out.
When oil comes below alarm contact, alarm gets activated and when oil is fully drained, you will get trip activated.
After testing, close the drain plug and open the valves so that oil gets filled inside the relay again.
Thanks,
Vijay
RE: Buchholz relay testing
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Buchholz relay testing