Connecting a 50-Hz Motor to a 60-Hz Power Supply

Its synchronous speed will be 6/5 times the 50 hz value. Due to the increase of impedance with frequency there may be a small drop in starting torque. As you are not raising the input voltage the output power will be reduced at maximum slip.

Further,

motor gets heated up more due to more hysteresis losses .

Also see the numerous previous CR4 threads on this subject.

Dear Mr.Trev1,

1. The impedence will be more and hence impedence voltage drop will be more by 20%.

2. Speed will be more by 20 % and unbalance force will increase by 44% over and above the forces experienced while running on 50 cycles supply, hence increasing the danger of rotor and bearing failure,if lubrication is not taken care.

3. over heating of motor will take place on account of extra impedence. Perhaps motor also will trip if relays are not taken care.

DHAYANANDHAN.S

I have lost count, but I'd say this is the SINGLE MOST ASKED QUESTION in this forum. I'd venture we are at over 100 queries.