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Do You Know The Types Of Explosion-Proof Lights?

Jan. 16, 2020

China explosion proof lamp supplier share with you:

1. Explosion-proof categories, grades and temperature groups of explosion-proof luminaires are specified in national standards.

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

3. According to the type of protection against electric shock, it can be divided into categories Ⅰ, Ⅱ, and Ⅲ. Anti-shock protection is to prevent the explosion-proof lamp housing from being easily touched by parts, causing the human body to be electrocuted or conductors of different potentials to touch and generate electric sparks to ignite the explosive mixture.

Class AI-On the basis of basic insulation, all accessible conductive parts that are not charged during normal work are connected to the protective ground conductor in the fixed line.

Type B Ⅱ-Use double insulation or reinforced insulation as safety protection measures, without ground protection.

CⅢ-Use a safe voltage with an effective value not greater than 50v, and no higher voltage will be generated.

Class D0-Only rely on basic insulation as a safety protection measure.

Most of the explosion-proof lamps have the type of protection against electric shock, and only a few are class II and III lamps. For example: all plastic explosion-proof lamps, explosion-proof flashlights.

4. Classification according to the protection level of the shell: In order to prevent dust, solid foreign matter and water from entering the lamp cavity, touching or accumulating on live parts, causing dangers such as flashover, short circuit or damage to electrical insulation, etc., there are various shell protection methods to protect the electrical The role of insulation. Use the characteristic letter "IP" followed by two numbers to characterize its enclosure protection rating. The first number indicates the ability to protect people, solid foreign objects or dust. Divided into 0-6 levels. Explosion-proof lamps and lanterns are a kind of sealed lamps and lanterns, whose dust-proof ability is at least level 4 or above. The second number indicates the protection ability against water, which is divided into 0-8 levels.

5. According to the design of the supporting surface material of the luminaire: explosion proof flood lamp may be installed on many common combustible material surfaces, such as wooden walls and ceilings. They do not allow the temperature of the installation surface of the explosion-proof luminaire to exceed the safe value. It can be divided into 2 types according to whether the explosion-proof lamps can be directly installed on the surface of ordinary combustible materials.

One type is only suitable for installation on non-combustible surfaces.

The other is a luminaire suitable for direct installation on the surface of ordinary combustible materials. It has marked symbols.

6. It can be divided into fixed type, movable type and portable type according to the installation and use form. principle

The principle of explosion-proof type is according to the European standard EN13463-1: 2002 "Non-electrical equipment for explosive environments-Part 1: Basic methods and requirements" explosion-proof concept and type of fire protection. An explosion-proof type is the most commonly used type of explosion-proof. Because this explosion-proof type lamp housing is generally made of metal materials, it has good heat dissipation, high strength and durability, and it is very popular with users. In addition, many safety-enhanced explosion-proof lamp components, such as lamp holders and interlock switches, also adopt explosion-proof structures. Electrical equipment with flameproof enclosures is called flameproof electrical equipment. If an explosive gas mixture enters the flameproof enclosure and is ignited, the flameproof enclosure can withstand the explosive pressure of the internal explosive gas mixture and prevent the internal explosion from propagating to the explosive mixture around the enclosure. This is a gap explosion protection principle, that is, a structure designed based on the principle that the use of a metal gap can prevent the propagation of the explosion flame and cool the temperature of the explosion product, achieve flame extinguishment and cooling, and suppress the expansion of the explosion.

Explosion-proof lamps:

Explosion-proof lighting: mainly used for lighting in flammable and explosive places, divided into explosion-proof fluorescent lamps, explosion-proof flood lights, explosion-proof flood lights, explosion-proof electrodeless lamps, explosion-proof flame-proof lamps, explosion-proof LED lamps, explosion-proof Platform lights, explosion-proof street lights, etc.

Explosion Proof Emergency Light

Explosion Proof Emergency Light

Explosion proof emergency light: It is mainly used for emergency use in flammable and explosive places. It is divided into explosion-proof sign lights, explosion-proof emergency lights, etc.

Explosion-proof signal lamps: mainly used for command signals in flammable and explosive places, divided into explosion-proof sound and light alarm lights, explosion-proof aviation signal lights

Explosion-proof and anti-corrosion lamps: mainly used in flammable, explosive and corrosive places: divided into increased safety explosion-proof anti-corrosion lamps, stainless steel explosion-proof anti-corrosion lamps.