Why does 50 hz equipments will not work well with 60 hz power source?

Question

for electrical engineering subject

Answer 1

This is usually timing related or specific to how fast at which a device is meant to operate.

A 50Hz supply may cause a motor to turn at 100rpm but a 60Hz supply will cause it to turn at 120rpm unless a governor is fitted. This is more noticeable as the speed is increased. Over revving a motor may wear out the bearings faster, damage the windings or seriously reduce the working life of a device and decrease the MTBF (mean time before failure). Safety may also be compromised as the device is expected to work beyond its recommended limits.

Some circuits also operate timing from the frequency of the supply and a 60Hz frequency would cause a 50Hz device to run slowly. Approximately 120% of normal speed. Any timing function would be seriously inaccurate.

Answer 2

Some appliances with electronic clocks in them use the mains frequency to time things. If it was designed to run on 50 Hz then the clocks will run 20% fast.

Answer 3

Because certain components (such as relays, solenoids, motors, transformers, etc.) are designed to operate at a certain frequency.

Doug