Talking about the Light Type Classification of Explosion Proof Lamp

Explosion-proof light is generally classified according to the selected light source, explosion-proof structure type, and usage mode. According to the light source classification, there are explosion-proof incandescent lamp, explosion-proof high-pressure mercury lamp, explosion-proof low-voltage fluorescent lamp, mixed light source lamp, etc.; according to the explosion-proof structure type, there are explosion-proof lamps, increased safety lamps, composite lamps, etc.; Explosion-proof lamps and portable explosion-proof lamps.

Type

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

Flameproof type d

The components of the device that may ignite the explosive gas mixture are all enclosed within a housing that is capable of withstanding any interface or structural gap through the housing. The flammable mixture that has penetrated into the interior of the device explodes without damage and ensures internal The flame gas reduces energy when propagating through the gap and is not enough to detonate the shell gas.

Increased safety e

Electrical equipment that does not produce arcs or sparks under normal operating conditions will take additional measures to increase its safety and prevent explosions of the possibility of dangerous temperatures, arcs and sparks in its internal and external components. Protection measures to improve equipment reliability and safety performance.

Positive pressure type p

By keeping the pressure of the protective gas inside the device enclosure higher than the surrounding explosion-proof ambient pressure to a safe electrical device, a positive static pressure is maintained inside the system or a continuous flow of air or inert gas is maintained to restrict entry of the flammable mixture into the interior of the enclosure. The flammable gas that enters the enclosure when the device is in a non-positive pressure state is taken away to prevent the formation of a flammable mixture in the enclosure.

This placement I

All circuits inside the equipment are intrinsically safe circuits of the explosion-proof gas atmosphere that are not specified by any spark or any effect under standard conditions (including normal operation and specified fault conditions).

Casting type m

Explosive sparks, arcs, or dangerous temperature electrical components that may ignite the explosive mixture will be encapsulated in the encapsulant (composite) so that it cannot ignite the surrounding explosive mixture. Enclosure measures are used to prevent electrical components. Short-circuiting, solidification of electrical insulation, avoidance of sparks on the circuit, ignition of arcs and dangerous temperatures, prevention of intrusion of explosive mixtures, control of surface temperatures under normal and fault conditions.

Oil-filled o

The entire equipment or components of the equipment are invaded in the oil I protection fluid l so that it cannot ignite the explosion-proof gas environment above the oil surface or outside the housing.

Sand filling type q

The shell is filled with sand or other powder material of specified characteristics so that, under the specified conditions of use, arcs or high temperatures generated in the shell cannot ignite the type of electrical equipment protection of the surrounding explosive gas atmosphere.

Hermetic type h

This type of explosion-proof equipment uses airtight enclosures. That is, the explosive gas mixture in the environment cannot invade the inside of the device housing. The airtight enclosure is sealed by melting, squeezing or gluing. This enclosure is mostly non-detachable to ensure permanent tightness.