How to Save Money When Buying electrical insulation tester

Probably a question you should ask yourself is do you really need the DMM functions as well in the same unit or do you just need the insulation testing functions? If you are just using it for insulation resistance testing them you can save a fair bit of money buying something else. What are you going to be using it for?
My pick would be the Brymen for all round electrical testing, I was close to buying one myself partially for the better low ohms resolution &#;earth continuity testing&#; ability than the fluke but happened to pick up a slightly used metrahit 27i with four wire milliohms capability for a little bit more than the Brymen.
I have other Brymen and Fluke meters so are not biased to either.

Click here to get more.

If you want to know if a piece of equipment is safe to energise the insulation tester is the kit to reach for, as a low voltage resistance test using a Fluke DVM as an ohmmeter doesn't cut the mustard. Other makes are available. Quite apart from the regulations, you need that high voltage for the test to be a valid representation of the real life energisation using mains supply. So while the insulation tester isn't the most frequently used bit of kit an anyone's toolbox, when you need it, you need it.

The same goes for the continuity tester. A simple ohms check won't pass 20 mA (the specified minimum test current through a short circuit) through the earth continuity conductor, and won't find loose screws, oxidised connections and the like.

So it's a specialised gadget for a very specific purpose, being the final checks to confirm that an appliance is safe to energise. By all means do the best you can with a digital ohmmeter but bear in mind these are not representative tests of the satisfactory state of the appliance, and if you are taking responsibility for someone else's welfare (don't we all?) the tests had better be done in the approved fashion.

With competitive price and timely delivery, Hengfeng sincerely hope to be your supplier and partner.

Don't agree about digital vs analogue, digital is much more robust, holds its calibration better, is at least one or maybe two orders of magnitude more sensitive.

Testing stuff with semiconductors exposed to the test voltage is a whole different ball game, well beyond the scope of the casual user. The possibilities for ending up with a piece of equipment which you know is safe to energise but now needs repair are endless.

As Phil has it above, if you are testing motors and heaters, an insulation tester is going to be essential, not least because it's the absolute first question anyone using the equipment should (will) ask. Has it got a valid insulation test? Second question is what is the earth continuity conductor resistance. Without confidence in the answers (for which read sight of a valid test certificate for the measuring instrument) cut the plug off.

HTH Simon

If you are looking for more details, kindly visit electrical insulation tester.