In a building, how do we provide for protection against overvoltage switching?
2
一般采用低压电流互感器(CT)实现电流—电压转换。
Usually the current transducer (CT) is adopted to convert the current into voltage.
3
文中分析了电流电压转换关系，推导了各元件的序参数，并作出了复合序网结线围。
Transform relations of currents and voltages are developed and sequence parameters are derived, Complex sequence networks for various faults are given.
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