Using 60Hz Transformer on 50Hz Supply

As suggested by MSAMAD, check the previous thread.

To add clarity, it is the revers of what was on the thread. i.e. from 60 to 50 Hz, your tansformer Impedence will drop by 20%, therefore increasing the primary current and could saturate the core by having a higher flux. If saturation occurs, then the current flow in the primary can increase even higher and overheat.

Usually, saturation will not happen on the lower end of the loading: that is if you do not load the transformer to its max rated watts. 80% less than the max load will still be safe, even though it will run hotter when compared to the same load on 60 Hz. Keep it at 70% better.

From the voltage ratio transformed, the same ratio will remain between the primary and secondary since this depends on the number of turns in each winding.

If possible, you can use the transformer on 50 Hz if the voltage on 50Hz is lower that the one on 60 Hz in the range of 20% less.ex: if 115V at 60Hz, then 95V at 50Hz. or 140V at 60Hz then 110V at 50Hz.

The first answers assumed you were talking about a large scale power handling project, such as a municipal power source. They may be right. If so, what I have to say is less useful, if at all. But, if what you are looking for is more in the small power realm (say in the building of a small electronic device, such as an amplifier, or even a battery charger, and if you aren't using a transformer where you are likely to approach its maximum power handling capability, the frequency of the input voltage should not affect its current out, and, since as noted, voltage induced is directly a result of turns ratios, there should be no measurable affect. NOTE, I did say that this is if, worst case, you are not approaching the power limits of the transformer. At low power usage, (80%, as noted, is a good upper limit, but unless the transformer is VERY small, such as a PCB mount bobbin style transformer, even 90-95% has caused no heating in my experience), the effective parameter is capacitance, which, coupled with the innate inductance of the transformer, adds to the reactance, and changes its resonant frequency. But reactance, at 50-60 Hz, is usually so low as to negligible in its affect on low power transformers.

Hope this is useful, but remember, THIS only helps if you are working at "hobby" power levels. If you start pushing any inductive device to near its full rated power, reactance changes caused by input frequency become a potential source of disaster. Derate and succeed!