Ran across an interesting problem with a JC P66 speed control for a condenser fan motor. Fan motor is 230/1/60 on a 460/3/60 unit. Used step down transformer to get 230 volts.Control requires 24 volt power supply for transducer.
Used 24v of of units controls which was fed from a separate power...
Is there a problem with having an electrical disconnect on the load side of a VFD? We're adding a VFD to an air handler motor. The VFD will be located inside building approxmately 35 feet away from motor. Code requires local disconnecting means at air handler which will put it on the load side...
We have a customer who over the years have lost several compressor motors (35 HP) on their air cooled chillers. Teardown reports gave no real help except confirming burnt stators.
Phase voltage monitors were installed about six months ago and have tripped but no motor failures. This makes us...
