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chiller prince
21-09-2010, 08:33 AM
got a McQuay chiller running on autotrans, everytime it starts, it will trip the main breaker. Have remove the cables to meg the motor, it showed a range from 20Mohms to 100Mohms. The cables showed 2Mohms from motor to autotrans.
Not sure whether this will cause the trip, or any problem with the autotrans? any ways to check the autotrans? Thanks...
NoNickName
21-09-2010, 08:45 AM
A breaker can't trip.
Is it a thermal switch, magnetic switch or differential switch?
nike123
21-09-2010, 09:16 AM
Is it ever worked satisfactory?
chiller prince
21-09-2010, 09:22 AM
my apologies, it is a MCB....
NoNickName
21-09-2010, 09:26 AM
Yes, but MCBs can either be thermal switches or magnetic switches. Which one?
What model is it?
What are the LRA and MRA of the compressor?
goshen
22-09-2010, 03:34 PM
got a McQuay chiller running on autotrans, everytime it starts, it will trip the main breaker. Have remove the cables to meg the motor, it showed a range from 20Mohms to 100Mohms. The cables showed 2Mohms from motor to autotrans.
Not sure whether this will cause the trip, or any problem with the autotrans? any ways to check the autotrans? Thanks...
Hi :
at what stage of starting does it trip the breaker?
what is the voltage?:)