April 2013
M T W T F S S
« Mar   May »
1234567
891011121314
15161718192021
22232425262728
2930  

Archives

Categories

Blown up surge suppressor module

This is a picture of a surge module taken from an LEA series type surge suppressor:

LEA MOV module destruction

LEA 600 volt MOV module

Looks like it took a pretty significant power hit, enough to explode several MOV’s.  This site is at the end of a long transmission line that stretches across an entire county.  Over the years, the station has made many complaints to the utility company about the quality of their power and the frequency of interruptions encountered at this transmitter site.  Occasionally, something will happen.  Often times it is the figurative shoulder shrug.

That is why we installed the surge suppressor.

Be Sociable, Share!

2 comments to Blown up surge suppressor module

  • Bob M.

    Looks like it did its job and gave up its life for god and country. I’ve seen several MOVs (also known as Transient Voltage Suppressors – TVS) that short out or have a very low resistance after the input voltage exceeds the rating. That usually blows the fuses until you replace the device. I recall fixing one unit that had a 120/240VAC switch and two MOVs, one across each primary winding. One had very low resistance with an AC voltage over about 50V so both got replaced. Cheap insurance as long as the equipment downstream doesn’t blow up in the process.

    Bob M.

  • Paul Thurst

    Bob, it did do its job, that is true. We also ended up with a few faulted switching supplies, but those at least were not blown up and it was an easy fault reset.

Leave a Reply

 

 

 

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

Axiom


A pessimist sees the glass as half empty. An optimist sees the glass as half full. The engineer sees the glass as twice the size it needs to be.

Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
~1st amendment to the United States Constitution

Any society that would give up a little liberty to gain a little security will deserve neither and lose both.
~Benjamin Franklin

The individual has always had to struggle to keep from being overwhelmed by the tribe. To be your own man is hard business. If you try it, you will be lonely often, and sometimes frightened. But no price is too high to pay for the privilege of owning yourself.
~Rudyard Kipling

Everyone has the right to freedom of opinion and expression; this right includes the freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers
~Universal Declaration Of Human Rights, Article 19

...radio was discovered, and not invented, and that these frequencies and principles were always in existence long before man was aware of them. Therefore, no one owns them. They are there as free as sunlight, which is a higher frequency form of the same energy.
~Alan Weiner

Free counters!