Keysight U1282a Review Part5, Destructive Transient Testing

Part5, We repeat our open fuse high voltage test and then begin transient testing the U1282A. Does it fail at the same level as the first Keysight meter I tested, or does 6X the cost suggest a more robust design. Watch and find out.

Part 1
Part 2
Part3
Part4

UNI-T UT181A Part 2 Comparing the grill starters waveform against the IEC standards.

My video comparing the U1282A's GDT protection with the more common MOV approach. This video was inspired after watching the EEVBLOG review below.

EEVBLOG reviews the U1282A

VBE reviews the U1282A

Feel free to join the thread:

[SIXSTRING]

Great test as usual Joe! I love watching these meter tests. I’m glad I found your channel years ago before I acquired more meters. I now have 4 Brymen meters and a nice pristine Fluke 189. Did buy a cheap used Agilent 1241A as my last meter purchase, works ok but not great. Only thing I do like is it is fast on capacitance reading, but slow to settle on most others. I had to chill on buying more test equipment at the request of my wife😝 after she noticed all my meters proudly displayed on my shelves above my bench in the basement. I got the “ do these all do the same thing? “ yes dear! Just like your shoe collection 😝😝😝😝

[Chris_Grossman]

A drop test after the switch lifecycle test would be interesting.

[ExPsy]

That is quite the expensive brick you have there... What a disappointment.

Have not said that before, so now it seems like the right time. I appreciate that you spend all those resources to let people know how all this equipment behaves in such scenarios. It might not be obvious immediately, but such information spreads, even if your videos themselves are mostly watched by what you might call a niche audience.

What I try to say here is that you help people around. So thanks a lot! That is all.

[alekseys]

Thanks Joe. Not long before I came across your channel, went and bought a 121GW meter all thanks to promotion videos from eev blog. I should have got a Brymen instead. ))

[albertocotrina]

Hi Joe, God bless You ! Greetings from Ecuador, Go ahead !

[mrpetit]

That's a lot of money destroyed there.
Can you name a real world situation that would be similar to that 5kV transient that destroyed the meter?
Like maybe an ignition coil output from a car or an inductive load from a faulty spinning motor/faulty motor drive?
And could this failure be avoided if they've used MOV's (being faster maybe) in the protection circuitry instead of spark gaps?

A very nice series of testing again👍

[absurdengineering]

What to do with the meter? Isn’t the hydraulic press channel always looking for new stuff to put under pressure? :)

[CliveChamberlain]

Trash it, Trash it! Hit it with a hammer and bash it! - Sonny Bono (old Love boat episode) 😂

[TheHWcave]

Great video again Joe. One thing I was wondering in watching it, is whether the repeated transient tests at ever increasing voltage wear out the protection devices? I had a quick look at a LittleFuse Gas Discharge Tube datasheet and they do have a limit of how many "hits" they can handle (e.g. 10). Granted the discharge currents in your tests are probably lower than the max. stated in the datasheets but then again you trigger far more hits. Any thoughts? It would be interesting but probably not practical to do two identical mock-up protection circuit and test one like you did for the U1282a multiple times with ever increasing peak voltages until it fails and the 2nd one with just the transients that caused the fail in the first one.

[fly-lucky]

Im surprised this meter didn't perform better. I bet if that badge said hp instead of keysight it would go farther in your rounds of testing