发现直流电阻性本质安全电路在断开过程中低能电弧放电有三种情况。
It was found that there are three types of low-energy arc discharge during the breaking process of resistive intrinsically safe circuits.
安全开关可以是一种电子开关，当汽车挂挡后，它断开控制电路。
The safety switch can be an electrical switch that opens the control circuit if the car is in gear.
电路部分具备过流保护功能，当电流超过一定额定值时，保险丝断开机器停止工作，最大限度的保护机器安全。
Some have over-current protection circuit, when the current exceeds a certain rating, the fuse disconnects the machine to stop working to maximize the protection of machine safety.
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