Help identify Varistor

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Help identify Varistor

Post by lukebarber » Mon Feb 06, 2017 3:05 pm

I'm trying to understand how some old equipment from ABB is working. I have schematics for the circuit boards, but it do not contains any information about the parts. Can you please help me identify these varistors? The photo is attached.

This is off of an OLD VFD. ... Drives.pdf
Tyristors.jpg (274.45 KiB) Viewed 3982 times

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Re: Help identify Varistor

Post by mediatechnology » Mon Feb 06, 2017 3:09 pm

Those are Panasonic parts.
7 mm K=10%
I think the "431" in the part number is 43 X 10V or 430V.

Have a look here: ... D431K.html

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