The high current in high voltage side is transformed low current in low voltage side by Rogowski coil.The low current outputted from the coil is loaded on the electric heating component.

• 系统通过罗氏线圈互感器把高压侧的大电流，转化为低压侧的小电流，再把此电流信号加载到电热器件上，通过对电热器件的温升测量达到间接测量电流的目的。