[TowerTalk] MOVs in Stackmatch

Kevin C. Kidd CSRE/AMD kkbroadcastengineering at gmail.com
Wed Jun 3 17:49:50 PDT 2009


MOV's should fail shorted or destroyed.  A visual or simple continuity
check will locate those.  Occasionally they will fail open.  There is a
HV tester for MOV's but if you have access to a megger or hipot tester
that will work as well.

Otherwise just replace them all.  They are cheap and very effective...

john at kk9a.com wrote:
> WX0B relays are pretty tough, I have had many direct lightning strikes and 
> no relay damage - even with no MOV protection near the relay.
> 
> I have had MOV's short after a direct hit, so sometimes they fail closed.  I 
> always replaced any that were obviously burnt even if open.
> 
> John KK9A
> 
> 
-- 
Kevin C. Kidd, CSRE/AMD
WD4RAT
mailto:kkidd at kkbc.com

KK BROADCAST ENGINEERING
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