Explosion-proof electrical product basic knowledge

In general, explosion-proof electrical equipment refers to a type of electrical equipment that is used in places where there is a risk of explosion of gases and vapors. Chemical production often encounters various kinds of gases and vapors that are dangerous to explode. In places where these media are present, the correct selection of suitable explosion-proof electrical appliances in accordance with relevant regulations, standards and regulations is an important guarantee for safe production, prevention of explosions and fires. Measures.

Divided into flameproof type, increased safety type, intrinsically safe type, positive pressure type, oil-filled type, sand-filled type, non-spark type, and special type. The main varieties are explosion-proof switch and knife switch, explosion-proof air automatic switch, factory explosion-proof magnetic starter, explosion-proof control button, explosion-proof operation column, explosion-proof limit switch, explosion-proof plug, explosion-proof junction box, explosion-proof junction box, explosion-proof pipe fittings and sealing materials , explosion-proof electromagnets and explosion-proof solenoid valves.

The main function of the explosion-proof connector is to use for cable connection and cable branching. Its main products are explosion-proof plugs and explosion-proof power socket boxes. Rated voltage is 220V ~ 380V, rated working current up to 100A, a variety of two-pole, three-pole plus neutral and ground wire structure, product casing made of metal and plastic material, explosion-proof grade up to IIC grade.

Most of these products are directly operated by hand, so their insulation performance requirements are generally high and must not be ignored. Explosion-proof fans Such products mainly include explosion-proof ceiling fans, explosion-proof exhaust fans and explosion-proof axial fans and other products. Its structure consists of explosion-proof motors, explosion-proof junction boxes and explosion-proof speed controllers and blades. Its rated working voltage is generally up to 380V, explosion-proof grade up to IIBT4.

The inside is mainly composed of connectors. Some products are equipped with a switch with a break point. This switch and the connector both have a chaining function, that is, the switch is disconnected after the switch is disconnected, and the plug is first inserted and closed. The product without switch also has the function of disconnecting the grounding wire after disconnecting the main circuit and inserting the grounding wire before inserting the main circuit. This is all done to ensure safe operation.

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