Often, the brush dust will cause a leakage isolation current.
You can start by simply blowing out the commutator with compressed air.
See if the leakage current changes. If it is less, but hasn't gone away
completely, pull the brush housing screens and give the brush rigging
and commutator a good cleaning. A dish brush and a toothbrush with a bit
of soap and hot water work quite well. Let it dry off for a day and test
again.
Just a thought...
Bill D.
On 7/21/2024 9:56 AM, John Lussmyer via EV wrote:
So, I've been able to trace my current weird Zilla issues down to
(most likely) a pack Isolation fault.
I was able to measure a 9ma fault from Pack - to 12v -.
After a lot of physical contortions (I'm nowhere NEAR as flexible as I
was when I built this thing), I was able to disconnect the motors from
the Zilla - and the isolation fault went away.
Now trying to figure out HOW to clear the fault in the motors.
Any suggestions?
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