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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Is there a way to test a MOV based surge suppressor? posted by Muzikmike on November 11, 2010 at 09:50:26:
MOVs form conductive paths once the voltage across them reaches a certain design level, then revert to non-conducting once the surge has passed. The conductive path may be damaged by the surge event, so that there is less of the metal oxide material available for future protection. Once all the easy paths are burned out, the device either becomes useless or dies in a spectacular short-circuit. I have a neighbor who lost his new dishwasher when his old Monster surge protection power strip went out with a bang.
I don't know of any way to tell if such a device is close to failure without making it fail.
Your power situation is unacceptable. The power company needs to install an event recorder and figure out why their grid switching is causing so much trouble. I once worked for a semiconductor manufacturing company that suffered from a similar problem. Every outage cost a lot of money in scrap material. The company was quite aggressive in pursuing a fix: it turned out the power company did not even know that their own automatic switching devices were the cause.
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Follow Ups
- No easy way. - Al Sekela 11:29:19 11/11/10 (1)
- RE: No easy way. - pictureguy 22:59:15 11/24/10 (0)
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