AO Smith Electrical Products Company conducted a test to see what effect CT would have on the running temperature of an industrial electric motor. Temperature sensors were positioned inside the motor winding. An average load was placed on the motor. The motor was tested without the CT and then the CT unit was connected and turned on.
With the CT unit connected, the motor ran five degrees Centigrade cooler than it did without the CT. After the first 10 hours the decrease in temperature stabilized at around four degrees Centigrade cooler than without the CT.