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(上接2016年第3期第43页)第13讲开关漏电开关根据用电安全规定,需在发生漏电危险较高的潮湿区域安装漏电开关。交流电通过磁线圈(电子回旋加速器)而在漏电开关的耦合线圈中产生电压。一般情况下,所有的电流都通过火线和零线。因为电流振幅相同、频率相反,其产生的电压也可以相互抵消。如果回路中的电流发生泄漏,那么电流就不均衡,因此耦合线圈就产生一个净电压。泄漏感应器会捕捉到这个净电压,促使螺线圈断开电路并切
(Continued on page 43 of 2016 No. 43) Lecture 13 Leakage switch switch According to electrical safety regulations, the risk of leakage occurs in the high humidity zone to install leakage switch. The alternating current generates a voltage in the coupling coil of the earth leakage switch through a magnetic coil (electron cyclotron). In general, all current passes through the live and neutral lines. Because the current amplitude of the same, the opposite frequency, the voltage generated can offset each other. If the current in the circuit leaks, the current is unbalanced, so the coupling coil produces a net voltage. The leak sensor captures this net voltage, causing the solenoid to open the circuit and cut it