Brymen BM2257 MOV Leakage Testing

Testing the BM2257 MOV leakage at 1200V DC and 1100V AC
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[@bertblankenstein3738]

Good enough for 'stralia. In the kV magnitude, you are probable dealing with high energy circuits where a few uA won't matter.

[@volodymyrzakolodyazhny]

Those graphs are for 20-23 C, I guess. But Australia can be sunny hot outside. Possibly meter lyied somewhere on the sunny window, get 50-60 C.

[@SeanBZA]

Would say PCB leakage would be a bigger factor, but low humidity inside will mitigate that. Try leaving one in the sun in a car for a day, then put in a plastic sealed bin to hold the high humidity in, and try again fast in the lab, to see just how much PCB leakage is.

[@JFirn86Q]

Very interesting! Yeah that's very good.

[@Krawacik3d]

Wouldn't different values of MOV in series cause different voltage drops across them, possibly triggering lowest-rated one, which would trigger remaining ones in a cascading manner?

[@seculi7757]

Too bad your Multimeter doesnt Amp to 11. (that`s where the headroom really matters.)
11*11 is where things get serious.

[@MikeB_UK]

Jeez, who would have thought a top tier multimeter manufacturer like Brymen would know what they were doing? 🙄

[@myleft9397]

His doesn't just go to 11 it goes to 12!!!

[@eimparas]

First ?