Selection, installation, use and protection of explosion-proof lamps
Explosion-proof lamps are a type of lighting lamps with explosion-proof function, and explosion-proof LED lamps have the mark of Ex. The sealing function of explosion-proof lamps, further protection methods are adopted in structure, etc., and the country has certain requirements for explosion-proof lamps. Non-explosion-proof lamps do not have more than one requirement.
The explosion-proof category, grade and temperature group of explosion-proof lamps and lanterns refer to the national standard regulations.
According to the type of protection against electric shock, it can be divided into categories I, II and III. The protection against electric shock is to prevent the explosion-proof lamps and lanterns shell easily touched parts from electrifying, causing electric shock to the human body or electric sparks caused by the contact of conductors with different potentials and igniting the explosive mixture. Class AI - On the basis of the insulation of the base, the accessible conductive parts that are not live during normal operation are connected to the protective earth conductor in the fixed line.
Class B II - with two layers of insulation or reinforced insulation as protection, no grounding protection. Class - Use an amp voltage with an effective value not greater than 50v, and no voltage higher than this will occur during the period.
The selection, installation, use and protection of explosion-proof lamps are indispensable links to ensure the long-term, reliable and operation of explosion-proof lamps, and it is necessary to pay sufficient attention. The selection personnel must understand the basic working principle of explosion-proof lamps and be familiar with explosion-proof signs. Accurately select the explosion-proof category, type, level and temperature group of the lamps according to the level of the explosive risk site. Understand the operating environment conditions and operating requirements, and reasonably select explosion-proof lamps with various functions. For example, the enclosure protection level of explosion-proof lamps used outdoors is at least IP43. In places where color identification is required, high-pressure mercury lamps and high-pressure sodium lamps cannot be used for explosion-proof lamps, because these two light sources have poor color rendering properties. Read the product instruction manual in detail to understand the product's use functions, precautions and product limitations, and understand the content of all signs of the product. If there is an "x" symbol after the explosion-proof certificate number, it indicates that the lamp has a specific applicable place. You should refer to the product operation manual and nameplate to clarify the applicable place requirements. Explosion-proof structure type of explosion-proof lamp.
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