If you are using an isolation/Step down transformer, if the transformer is loaded past about 50% of its capacity it will begin to make significant distortion on its output.
Its the 5th harmonic of the line frequency that becomes problematic- this harmonic causes power transformers to rattle, motors to have poor torque, diodes to radiate more noise. To avoid that you apply the 2x rule- it should not be tasked beyond 50% of its rated capacity.
Its the 5th harmonic of the line frequency that becomes problematic- this harmonic causes power transformers to rattle, motors to have poor torque, diodes to radiate more noise. To avoid that you apply the 2x rule- it should not be tasked beyond 50% of its rated capacity.