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New UNI-T UT892 2000V AC/DC High Voltage Multimeter

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Fungus:

--- Quote from: Martin72 on August 27, 2022, 09:02:10 pm ---I´ve got serious doubts about the 2000V range on a meter which costs "nothing".

--- End quote ---

Why? Voltage dividers are dirt cheap and there's no current ranges so they saved money there.


--- Quote from: Martin72 on August 27, 2022, 09:02:10 pm ---Then the UT-892 come along, for 42 bucks...
I got doubts.  ;)

--- End quote ---

Even Fluke sells a $50 meter.

Mechatrommer:

--- Quote from: jhoffman on August 28, 2022, 07:09:31 pm ---You falsely state "3 phase has nothing to do with 2KV" when you consider transient voltages in real world practical situations. Last time I checked we still use electric motors with coil windings which have a habit of generating back EMF when you switch them on and off.

--- End quote ---
if talk about transient, we can have 12V automobile producing 25KV (i got the shock once its not fun) and normal household appliances that can produce the same level intentionally. once i fixed a mains strobe when spark occur across a through hole resistor, about 1cm legs apart go figure what KV can do that, i covered the path with double sided tape acting as dielectric modifier, problem solved. transient is everywhere even in static.


--- Quote from: jhoffman on August 28, 2022, 07:09:31 pm ---I originally created this post in the interest of public safety and awareness to "bait" people to see who would bite.

--- End quote ---
so you are special kind of (troll) bot ;D

jhoffman:

--- Quote ---Quote from: jhoffman on Yesterday at 07:09:31 pm

    I originally created this post in the interest of public safety and awareness to "bait" people to see who would bite.

so you are special kind of (troll) bot ;D
--- End quote ---

I sensed (without at the time understanding why) that there was something "unusual" about this meter.

I will now buy this meter (replacing the original test leads for better ones) as in my humble opinion (after considering the evidence) that this is an excellent value HV voltmeter for $32 USD.

When you consider the PCB real-estate gained by removing current measurement circuitry (inc. the shunt and fuses) it becomes obvious that there is more PCB real-estate available for physical insulation separation to avoid internal HV voltage breakdowns.

I haven't seen a tear-down yet, but intuitively I've formed the opinion so far that this is a good HV voltmeter for $32 USD.

It's sold as a 2kV multimeter which in practice will "probably" work up to 6.0kV with some minor mods possibly required.

Mind you, I wont be holding onto this meter with my bare hands if I'm trying to measure the HV supply of a microwave oven's magnatron.

I simply used this forum as a "Litmus Test" just to gauge what others might be thinking.

Kleinstein:
Before using this meter for higher voltage is may be a good idea to look inside first. There is a chance it can be reasonable made, but we don't know.
Besides the extra space from not having the amps ranges, the extra terminal also means there is no need to route the input to the switch / ohms ranges. The protection of the ohms ranges is often one of the weak points, more than just the voltage ranges.


With the often not so good fuses in cheap meters it may be a good idea to have a look inside first too, so one knows if the CAT rating is somewhat legit or a bad joke.

Martin72:

--- Quote from: Fungus on August 29, 2022, 03:36:05 pm ---Even Fluke sells a $50 meter.
--- End quote ---

Well, it says what...

I think I´ll try to get a UT892 and tear it down.
The other Uni-T, UT196 I try to let it order by our purchase man.
Amazon is not a problem to buy for us, but this one will be sold directly from china - Not so good for us.. ;)

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