Explosion of surge arresters
Explosion of surge arresters
(OP)
Can someone please advise the possible cause of explosion of mediunm voltage surge arresters in the line?
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 |
Explosion of surge arresters
|
RE: Explosion of surge arresters
RE: Explosion of surge arresters
RE: Explosion of surge arresters
Is this a one-time event or have you been experiencing numerous failures? If numerous, is it all the same type and vintage?
wbd
RE: Explosion of surge arresters
RE: Explosion of surge arresters
RE: Explosion of surge arresters
RE: Explosion of surge arresters
The Doble test checks for insulating qualities which might be affected by moisture, dirt or corrosion. The good thing about Doble is that they have test data on lots of Surge Arresters, so that you have a large population to compare your surge arresters against.
Check out their website at www.doble.com
wbd
RE: Explosion of surge arresters
http://www.sepw.com.cn/prod1e.htm
http://www.jensenab.se/surge_arrester.html
http://www.mtlsurgetechnologies.com/
http://www.ev.siemens.de/uk/arrester/
etc. for more info
RE: Explosion of surge arresters
Failure noormaly are due to moisture inside the arresters, because of seal failures.
Preventive maintenance.
- visual inspection of external part, may be a cuasi-failure with a superficial track and seals condition.
- PF measure with Doble equipment
- LCM leakage current meter, that are test equipment for measuring the resistive leakage current. For MOA Arresters
is one of the most accurate way for detecting problems.
There are CIGRE 2000 works presented. ABB sells LCMs that are from Transinor a maker from Norway.
Are only for MOA arresters.
www.transinor.no