Say YES or NO... #electrical #tranformer #50hz #60hz

All you have to do to answer it is evaluate the change in the flux in the core.

If the flux increases above the design value,
the answer is NO;
if the flux decreases, the answer is YES.

So, how does the flux change?

The flux is proportional to volts per hertz, or Φ∝V/f, where Φ is the flux in the core, V is the rms excitation voltage, and f is the frequency in Hz.

If you have a 50 Hz transformer at a rated voltage of V, the design flux will be proportional to V/50. If you now energize that transformer at the same voltage and 60 Hz, the flux will be V/60.

So did the flux increase or decrease? Answer: it decreased, so YES, the 50 Hz transformer can be operated at 60 Hz. In this case, it decreased by a factor of 50/60=0.83 or about 17%. If you want the flux to remain the same as the design value, then the voltage can be increased by a factor of 60/50=1.2.

To summarize.

Given a 50 Hz transformer with a rated voltage of V, it can be energized at 60 Hz with a voltage no greater than 1.2V.

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[ellisdawsonjr]

Not necessarily an explosion but probably will heat up the transformer some what!

[منذر.هادي]

No problem when operating 50 hz transformer on 60hz, the problem when you run 60 hz transformer on 50 hz