According to the explosion-proof type, it is divided into 5 main types: explosion-proof type, increased safety type, positive pressure type, non-sparking type and dust explosion-proof type. It can also be composed of other explosion-proof types and the above-mentioned explosion-proof types combined or composite and special types. .

Flameproof type d

All parts of the equipment that may ignite explosive gas mixtures are enclosed in a shell. The shell can withstand any joint surface or structural gap of the shell, and the flammable mixture that penetrates into the shell will explode inside without damage, and can ensure the internal When the flame gas propagates through the gap, the energy is reduced, and it is not enough to detonate the gas in the shell.

Flameproof explosion-proof lamp

Increased safety e

Electrical equipment that does not produce arcs or sparks under normal operating conditions takes some additional measures to improve its safety, and prevents the possibility of dangerous temperatures, arcs and sparks in its internal and external components. The explosion-proof type is further adopted in the structure Protective measures improve the reliability and safety performance of the equipment.

Positive pressure type p

By keeping the pressure of the protective gas inside the equipment enclosure higher than the pressure of the surrounding explosion-proof environment to a safe level, the electrical equipment can protect the static positive pressure inside the system or maintain a continuous flow of air or inert gas to restrict flammable mixtures from entering the enclosure. Take away the flammable gas that enters the enclosure when the internal pressure of the equipment is not under positive pressure, and prevent the formation of flammable mixture in the enclosure.