Hioki IR4058 Insulation Tester Review

RE: Hioki IR4058 Insulation Tester Review

three-phase — Thu, 31 Dec 2020 10:19:59 GMT

I was asked a question how accurate the Hioki 4058 insulation tester was at the kOhm end of the scale. I hadn't really considered this that much, the performance tests I do are across the complete range of the insulation testing function. I have a resistance decade box, but its voltage rating is limited so the tests were carried out on the 125V test voltage.

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As you can see from the table that is a good set of results for the Hioki, this could well be another test I add to the performance tests of an insulation tester.

Kind regards.

RE: Hioki IR4058 Insulation Tester Review

fmilburn — Wed, 25 Mar 2020 20:39:32 GMT

Your series of posts on this subject is awesome. This has to be the best source of information anywhere for these instruments.

RE: Hioki IR4058 Insulation Tester Review

genebren — Wed, 25 Mar 2020 16:27:39 GMT

Another great test/blog in your series. I would agree that this looked like an extremely clean build. The PCB looked so clean compared to a lot of boards that I see (even in higher price products), no sloppy tacked components. It is a shame however that this instrument did have all the bells and whistles that you might expect. Good luck finding the perfect instrument!