I was reading through document, it mentioned that the EMI radiated from a 750kVA transformer is 40mG at 15m. What exactly does that mean? is the Interface mentioned radiated at 50/60Hz. What about EMI at other frequencies. I'd imagine that they would be limited to harmonic frequencies only, which will quite minimal, is that right? Any Comments?
The reason I ask is because electronic equipment can be susceptible to EMI interference, I had been given a data sheet for an IT unit, where it mentioned the equipment will be not be susceptible to EMI provided that EMI does not exceed the following:-
150mG @ 50Hz
150mG @ 100Hz
150mG @ 500Hz
75mG @ 1KHz
75mG @ 5KHz
75mG @ 10KHz
75mG @ 20KHz
75mG @ 30KHz
75mG @ 40KHz
75mG @ 50KHz
Cheers.