[TowerTalk] TowerTalk Digest, Vol 44, Issue 30 Msg 5

[George Lee]

An opinion.

If you are not trained in the use of Hi-Pot testers, please do not use one 
until you have instruction in the dangers of and proper use  of this 
instrument. They are designed to deliver HIgh-POTential voltages.  They are 
dangerous and can and will deliver LETHAL voltages.

BE CAREFUL and know how and what you are doing.

George KR5C


> Message: 5

> When I mentioned earlier that a hi-pot tester should be used I had 
> forgotten
> that the ICE units have a coil to ground. A hi-pot tester would do no good
> there.
>
> With Polyphaser units there is no coil to ground, only a gas tube. A 
> hi-pot
> tester is what Polyphaser recommends for testing their units. In fact they
> even sell one for that purpose. It is called FIST.
>
> To test MOVs Polyphaser also recommends the hi-pot tester. It is true that
> the normal failure mode is shorted but they can fail open too.
> The low current ( a few microamps) from a hi-pot tester will not harm 
> them.
> The capacitors (if they are ok) will withstand higher voltages than the
> breakdown voltage of the MOVs.
>
> 73
> Gary  K4FMX