The design of the tank through the tank wall thickness and strengthening a reasonable choice of shape and quantity of iron

The design of the tank, through the rational selection of wall thickness and to enhance the shape and  mcb circuit breaker  of iron to allow the tank to avoid the natural frequencies of the local oscillator frequency of the core, to achieve the purpose of  electric meter  the resonance tank. Since the core flux in the presence of harmonics, making the transformer core, in addition to the fundamental vibration frequency noise, but also contains octave noise components. Practice has proved that only consider one of the fundamental frequency and the second, third and fourth harmonic frequency components can be.