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General => General Technical Chat => Topic started by: AlphZeta on December 24, 2012, 06:52:23 pm

Title: MOVs caught on fire (from DP)
Post by: AlphZeta on December 24, 2012, 06:52:23 pm

I just read this from DP. I am gonna test mine to see.....

http://dangerousprototypes.com/forum/viewtopic.php?f=2&t=4915#p47583 (http://dangerousprototypes.com/forum/viewtopic.php?f=2&t=4915#p47583)

http://youtu.be/j53qtYc5ZeE?t=3m19s (http://youtu.be/j53qtYc5ZeE?t=3m19s)

Title: Re: MOVs caught on fire (from DP)
Post by: saturation on December 24, 2012, 09:14:37 pm

https://www.eevblog.com/forum/suggestions/surge-protectors-scams-and-saints/15/ (https://www.eevblog.com/forum/suggestions/surge-protectors-scams-and-saints/15/)

You can't really test a MOV based protector unless you destroy it, since it works like a fuse, once fully used its dead.

Title: Re: MOVs caught on fire (from DP)
Post by: AlphZeta on December 25, 2012, 01:06:47 am

Quote

You can't really test a MOV based protector unless you destroy it, since it works like a fuse, once fully used its dead.

Of course, I should have chosen my words better... Anyway, I have more than 10 cheap power strips and I was thinking of sacrifice a couple to see if they indeed catch on fire when the voltage remains high for a prolonged period of time. Of course I don't have a variac on hand right now so I couldn't really give it a go. But it does look pretty scary when these MOVs caught on fire! I guess I would think twice before I buy a new power strip.