Re: Digital Multimeters


PTC voltage rating has nothing to do with readings at all. It is protection device, it changes it's resistance ONLY when voltage is clamped with varistors, what does not happen at all unless input voltage exceeds 1.8 kV. That means with lower voltage PTC, meter will have worse overvoltage protection but no other negative effects....

Re: Digital Multimeters

BTW, as BM869 clamps the voltage to 1.8 kV (DC) by MOVs after those burned resistors and PTCs which are rated to 1kV, seems that OP had put well above 2.8 kV (peak, not RMS) into the meter.

Re: Digital Multimeters


ut-61e will start arching between the contacts in the dial switch somewhere between 1000V and 2500V applied (output voltage settings on the HV tester in the video). As it seems OP had some high energy high voltage source, I wouldn't be surprised if a huge plasma arc appeared inside the meter and it would blow up in pieces. Here is ut-61e HV test:
[url]https://www.youtube.com/watch?v=hhBbvIf3E0s[/url]
And here is how multimeter explodes in pieces from 4kV limited energy source (capacitor). In the OP's case, that probably would not end just...

Re: Digital Multimeters

Don't blame Brymen, that is a plain user ignorance, not the issue with multimeter at all. It have done it's job fine, failed in the safe way and didn't explode in your face. Learn to think twice about what you are doing before killed yourself out of plain ignorance.

The issue is, if it was UT-61E, OP could get harmed himself when that thing would explode in his hands. Turns out is easier to damage Fluke 87 V with HV, rather than BM869:
[url]https://www.youtube.com/watch?v=x2Dg1QA71wU[/url]Re: Digital Multimeters

Don't...