Explosion-proof lamps
Refers to the use of flammable gases and dust in hazardous locations, to prevent the lamp may be generated within the arc, sparks and high temperature ignition of flammable gases and dust surrounding the environment, so as to achieve explosion-proof lamps. Flameproof explosion-proof lamps, safety explosion-proof lamps, mobile explosion-proof lamps and so on. The bright lights of BC9300 produced by Tongming Electric are suitable for lighting in flammable and explosive places such as petrochemical plants, petroleum platforms, gas stations, oil pump rooms and transfer stations. Zone 1, Zone 2 explosive gas atmospheres. 21 zone, 22 zone combustible dust environment. classification
1. Explosion-proof lamps explosion-proof category, level and temperature group see national standards.
2. According to the explosion-proof type is divided into flameproof, increased safety, positive pressure, non-sparking and dust explosion-proof a total of five main types, but also by other explosion-proof type and the various combinations of explosion-proof type or composite type and special type .
3. According to the type of protection against electric shock can be divided into â… , â…¡, â…¢ category. Protection against electric shock is to prevent the explosion-proof lamp housing easily accessible parts charged, so that the human body electric shock or different potential of the conductor touches generate spark and ignite the explosive mixture.
Class AI - On the basis of basic insulation, easily accessible conductive parts that are not energized during normal operation are connected to a protective earth conductor in a fixed line.
Class B - Double insulation or reinforced insulation as a safety precaution, no earthing protection.
Class C - Use a safe voltage with an effective value not greater than 50V, and above which no voltage will be generated.
Class D0 - Rely on basic insulation only as a safety precaution.
Most of the explosion-proof lighting anti-shock protection type I-type lamps, only a small number of â…¡, â…¢ lamps. For example: plastic explosion-proof lamps, explosion-proof flashlight Jane.
4. According to the classification of enclosure protection: in order to protect the dust, solid foreign matter and water into the lamp cavity, touch or accumulate in the live parts have flashover, short circuit or damage the electrical insulation and other dangerous, there are a variety of shell protection to protect the electrical The role of insulation. The characteristic letters "IP" followed by two numbers to characterize the enclosure protection level. The first number indicates the protection of people, solid foreign bodies or dust. Divided into 0-6 level. Explosion-proof lamps and lanterns is a kind of sealed lamp, its dustproof ability is at least 4 above, the 2nd figure shows the protection ability to water, divide into 0-8 grades.
5. According to the lamp design support surface Material Category: Indoor explosion-proof lamps may be installed in many common flammable materials such as wood walls and ceilings, they do not allow explosion-proof lighting installation surface temperature exceeds the safety value. According to explosion-proof lamps can be installed directly on the surface of ordinary combustible materials can be divided into two categories.
One is a fixture that is suitable only for installation on non-combustible surfaces.
The other is suitable for direct installation on the surface of ordinary flammable lamps, marked with symbols.
6. By installing the use of forms can be divided into fixed, portable, portable. principle
Flameproof type principle according to European standards
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