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Which Brymen?
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Jbahler:
Hello, We are currently considering a Brymen multimeter/megger. We are curious as to what the differences between the BM887 and the BM878 are. Would anyone here have an idea or experience with either of these? Thanks!
2N3055:
I don't have onew but was considering getting one some time ago and was researching...
I have 2 other Brymens for few years and they seem to be good quality so far.
Simplest way to explain the difference is that BM887 is feature complete meter with Hi pot tester, and that BM878 is more HI pot tester, Earth current tester with slightly limited multimeter functions.
BM887 :
20Khz AC BW
current ranges from 600µA to 10A
BM878
Earth continuity
Hi pot resistance
Hi pot resistance GO/No GO (compare mode)
Hi pot PI / DAR (Polarization index & Dielectric Absorption ratio measurement)
current ranges only 60/600mA
BM878 is more complete Hi pot tester and also Earth cont. tester. If you need Hi Pot tester primarily, that that is the one to have.
BM887 is full multimeter with 1000V resistance mode. I guess that is for people who need a full meter and they occasionally want to cursory check if some device's insulation still holds hi pot....
Those were my conclusions...
In meantime I got a very good price on other HiPot meter and never have bought the BM878.
Best,
Jbahler:
Well, we ended up ordering the 878. It seems the best fit for our needs as we will mainly use the insulation testing function. As far as the meter functions go we carry a Keysight U1272A and that has become our go-to workhorse for testing anything a DMM can test!
It appears that the BM878 has some basic logging functions as well such as, Min Max Avg while the BM887 does not.
Also the ground continuity test will come in useful in our profession (Industrial automation engineers/technicians)
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