Explosion-proof lighting installation acceptance criteria classification 1. Explosion-proof lighting explosion-proof categories, levels and temperature groups see national standards.
2. 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. .
3. According to the type of protection against electric shock can be divided into I, II, III category. The protection against electric shock is to prevent the explosion-proof lamp housing from being easily touched and the parts are electrified, so that the human body is exposed to electric shock or conductors with different potentials to generate electric sparks and ignite the explosive mixture.
AI class—On the basis of basic insulation, accessible conductive parts that are not energized during normal operation are connected to the protective ground conductor in the fixed line.
Class BII - Use double insulation or reinforced insulation as a safety measure without grounding protection.
Class CIII - Use a safe voltage with an effective value of not more than 50V, and no voltage above it will be generated.
Category D0 - only rely on basic insulation as a safety protection measure.
Most of the explosion-proof lamps and lanterns are protected against electric shock and they are Class I and only a few are Type II and Type III lamps. For example: all plastic explosion-proof lamps, explosion-proof flashlight Jane.
4. Classified according to the protection class of the enclosure: In order to protect the dust, solid foreign matter and water from entering the lamp cavity and touching or accumulating on the live parts to cause flashover, short circuit or damage to the electrical insulation, there are a variety of enclosure protection methods to protect the electrical Insulation effect. The characteristic letter “IP†followed by two digits is used to characterize its enclosure protection level. The first number indicates the protection against humans, solid objects or dust. Divided into 0-6 levels. Explosion-proof lamps are sealed lamps. Their dust-proof capacity is at least 4 levels. The second number represents the protection against water and is divided into 0-8 grades.
A. The explosion-proof signs, shell protection grades and temperature groups of the lamps and lanterns are adapted to the explosion hazard environment. When the design is not required, the types of lamps and explosion-proof structures should meet the following requirements:
Types of lamps and types of explosion-proof structures Types of lamps and types of explosion-proof structures B. Lamps are fully furnished, and non-explosion-proof parts must not be used to replace lamp accessories (metal screens, lamp shades, junction boxes, etc.);
C. The installation location of the lamp is away from the source of release, and the lamps are not installed above or below the pressure relief ports and discharge ports of various pipelines;
D. Fixtures and switches are firmly and reliably installed. The number of screwed engagements between the lamp hangers and switches and the junction box is not less than 5 buckles. The threads are smooth, complete, and free of corrosion. The threads are coated with electric composite ester or conductive rust. ester;
E. The switch installation position is easy to operate and the installation height is 1.3m.
2. 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. .
3. According to the type of protection against electric shock can be divided into I, II, III category. The protection against electric shock is to prevent the explosion-proof lamp housing from being easily touched and the parts are electrified, so that the human body is exposed to electric shock or conductors with different potentials to generate electric sparks and ignite the explosive mixture.
AI class—On the basis of basic insulation, accessible conductive parts that are not energized during normal operation are connected to the protective ground conductor in the fixed line.
Class BII - Use double insulation or reinforced insulation as a safety measure without grounding protection.
Class CIII - Use a safe voltage with an effective value of not more than 50V, and no voltage above it will be generated.
Category D0 - only rely on basic insulation as a safety protection measure.
Most of the explosion-proof lamps and lanterns are protected against electric shock and they are Class I and only a few are Type II and Type III lamps. For example: all plastic explosion-proof lamps, explosion-proof flashlight Jane.
4. Classified according to the protection class of the enclosure: In order to protect the dust, solid foreign matter and water from entering the lamp cavity and touching or accumulating on the live parts to cause flashover, short circuit or damage to the electrical insulation, there are a variety of enclosure protection methods to protect the electrical Insulation effect. The characteristic letter “IP†followed by two digits is used to characterize its enclosure protection level. The first number indicates the protection against humans, solid objects or dust. Divided into 0-6 levels. Explosion-proof lamps are sealed lamps. Their dust-proof capacity is at least 4 levels. The second number represents the protection against water and is divided into 0-8 grades.
A. The explosion-proof signs, shell protection grades and temperature groups of the lamps and lanterns are adapted to the explosion hazard environment. When the design is not required, the types of lamps and explosion-proof structures should meet the following requirements:
Types of lamps and types of explosion-proof structures Types of lamps and types of explosion-proof structures B. Lamps are fully furnished, and non-explosion-proof parts must not be used to replace lamp accessories (metal screens, lamp shades, junction boxes, etc.);
C. The installation location of the lamp is away from the source of release, and the lamps are not installed above or below the pressure relief ports and discharge ports of various pipelines;
D. Fixtures and switches are firmly and reliably installed. The number of screwed engagements between the lamp hangers and switches and the junction box is not less than 5 buckles. The threads are smooth, complete, and free of corrosion. The threads are coated with electric composite ester or conductive rust. ester;
E. The switch installation position is easy to operate and the installation height is 1.3m.
Exit Sign For Aluminum And Acrylic
The LED exit sign light is specially made from aluminum and acrylic materials, and is also fast dissipating heat, insulating and corrosion resistant. LED emergency lights are illuminated with super bright LEDs to ensure visibility in dark corridors and hallways. In case of an emergency power outage, the exit lane will be illuminated. Exit signs are designed for various types of indoor commercial uses such as hotels, shopping centers, theaters, restaurants and other public places. Any emergency exit signs must have continued reliability. Easy to install and can be hung on the wall or from the ceiling.
Emergency Light Sign,Wall Mounted Exit Sign,Led Emergency Exit Sign,Battery Operated Exit Signs
Jiangmen City Pengjiang District Qihui Lighting Electrical Appliances Co., Ltd , https://www.qihuilights.com