Hello,

I have new 12 pulse GM150 air cooled that been ruining for weeks on IT grid without a problem,

recently we start getting random F30094 from the Bender Isolation monitoring,

meggering for input side and output side with motor done and everything looks normal

i can see in bender events the resistance value goes down to 100K sometimes which makes it trip

but then after acknowledging the fault and starting compressor again it run smoothly for days without issues and bender shows 3M ohm.

any one had experience this before ?

Br,

Ahmed

We have the same problem with water cooled GM.