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...
> 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
KK BROADCAST ENGINEERING
AM GROUND SYSTEMS CO.
51 Ridge Ln
Lawrenceburg, TN 38464
Nation Wide: 877-766-2999
TowerTalk mailing list