LED explosion-proof lamps are special lighting fixtures, and their working principle is the same as that of ordinary explosion-proof lamps. special measures. LED explosion-proof lamp is a new type of energy-saving explosion-proof lamp on the market.
A very important explosion-proof principle of LED explosion-proof lamps is to limit the temperature of the surface of the shell, the surface of parts or the surface of electronic components in contact with explosive gas and dust, so that the temperature of the electrical contact surface is lower than the minimum ignition temperature or ignition temperature. Outdoor use of LED explosion-proof lights, need to use waterproof driver. LED explosion-proof lights need to be shockproof when used in gas stations!
Classification of explosion-proof lamps.
1. The explosion-proof category, grade and temperature of explosion-proof lamps and lanterns are specified in national standards.
2. According to the explosion-proof type, it is divided into five main types: flameproof type, increased safety type, positive pressure type, non-sparking type and dust explosion-proof type. There are also other explosion-proof types and combinations of the above-mentioned explosion-proof types or composite types and special types. type.
3. The types of protection against electric shock can be divided into four categories. The protection against electric shock is to prevent the explosion-proof light box from easily contacting the electrification of the parts, so that the electric shock of the human body and the contact of conductors with different potentials generate electric sparks and ignite the explosive mixture.
Category 1 - On the basis of basic insulation, easily accessible conductive parts that are not energized in normal operation are connected to the protective earth conductor of the fixed line.
The second category - double insulation or reinforced insulation as safety protection measures, no grounding protection.
Category 3 - Use a safe voltage with an effective value below 50v, where no voltage above that value is generated.
Category 4 - Relying only on basic insulation as a safety precaution. Most of the explosion-proof lamps and lanterns have anti-shock protection models of Class I lamps, and only Class II and Class II lamps. For example, all-plastic explosion-proof lamps, explosion-proof flashlights and so on.
4. Classified according to the protection level of the shell: in order to prevent dust, solid foreign objects and water from entering the lamp cavity, contacting or accumulating on live parts and causing dangers such as flashover, short circuit or damage to electrical insulation, a variety of shell protection methods are used to protect electricity. The role of insulation. Use the two numbers after the characteristic letter IP to express the degree of protection of the housing. According to the protection ability of flammable objects or dust, it is divided into 0-6 grades. The explosion-proof lamp is a sealed lamp, and its dustproof capacity is at least grade 4. The second number indicates the waterproof ability, which is divided into grades 0-8.
5. Classification of supporting surface materials according to lighting design: Indoor explosion-proof lighting may be set on the surface of common combustible materials such as wooden walls and ceilings, and the temperature of the surface of explosion-proof lighting should not exceed a safe value. According to whether explosion-proof lamps can be directly installed on the surface of flammable materials, they can be divided into two categories.
One is lighting fixtures that are mounted on non-combustible surfaces.
Second, it is suitable for lamps and lanterns with signs that are directly installed on the surface of general flammable materials.
6. According to the installation and use form, it can be divided into fixed type, mobile type and portable type.
The LED explosion-proof light is a special lighting device, which can make the lighting range evenly illuminated, and can make full use of the soft light and no glare, which is not easy to cause the user's eyes fatigue, and improves the work efficiency.
The light source adopts the brightest LED in the world, and the power consumption is only 40% of the gold halide lamp.
The important components of the power supply are all world-class brands with high efficiency and stability.
The unique heat dissipation structure is adopted to accelerate heat conduction through heat conduction, effectively ensuring the efficient heat dissipation of the LED, and making the LED lifespan reach 100,000 hours.
The explosion-proof type has the highest explosion-proof level and can be used in flammable and explosive places in all walks of life.
Can be connected in parallel, saving connection box and installation costs.
The shell adopts a new technology surface spraying process, which is wear-resistant, corrosion-resistant, waterproof and dust-proof, and is suitable for various weathers and environments.
When the led explosion-proof lamp is used as a flood light, a condenser cover is added on the light source surface to improve the illumination of the flood light.
The led explosion-proof lamp adopts a sealed design and explosion-proof material. The safety protection level needs to reach IP65, WF1, waterproof, dustproof, explosion-proof, and anti-corrosion.
Led explosion-proof lamps are used in oilfield explosion-proof lamps: the oilfield derricks designed with anti-falling rings are used to vibrate to prevent the lamps from being protected by the anti-falling rings due to bolts falling off.
a explosion-proof mark.
bBasic signs: including product name, model, manufacturer's name, registered trademark, date of manufacture, etc.
c Performance safety signs: rated voltage, current, nominal frequency, light source power and quantity, allowable ambient temperature (the range is only -20~+40°C, not displayed), specific applicable environment signs (only applicable to certain explosive gas mixtures products, must display the name or molecular formula of flammable gases), classification marks of lighting fixtures, such as "numbers", etc.
d Explosion-proof certificate number, which proves that the product has passed the official inspection of the explosion-proof inspection station. Some products have an X symbol after the explosion-proof certificate number, indicating that the product can only be used under some special safe use conditions, and the specified conditions should be clearly indicated in the light box or product manual.
d Additional notes. In addition to the above markings, detailed instructions required for proper setup, use and maintenance must be provided on the luminaire, on the ballast for interior fittings, or on the manufacturer's product manual supplied with the luminaire.
For example, as follows:
a Some explosion-proof lighting fixtures are only allowed to be installed and used in a certain place or within a certain viewing angle range. This is because of the change in working stretch, the heat distribution on the surface of explosion-proof lighting fixtures and the change of the maximum surface temperature, and the most important reason for the restriction of the workplace of explosion-proof lighting fixtures is to control the maximum surface temperature, which does not exceed the mark of the explosion-proof lighting fixture itself. temperature group, resulting in dangerous temperatures. In addition, changes in the workplace will also affect the life and performance of some light sources, affecting the insulation materials, electrical components, and wire insulation performance and life of lamps and lanterns. Therefore, the setting of explosion-proof lamps and the limitations of the place of use must be clearly stated.
b In order to reduce the maximum surface temperature of explosion-proof lighting fixtures and reduce the level of product temperature grouping, explosion-proof lighting fixtures that design and select special specifications of light sources must indicate the name, model, shape and size of the bubble shell and manufacturer. If there is no clear record, when the user replaces other bulbs with the same power, the maximum surface temperature of the explosion-proof lamp may be higher than the combustion temperature of the mixed explosives in use, posing an explosion hazard.
c Under the most unfavorable conditions of normal operation, the insulation material of power cables and wires is displayed when the maximum temperature in the lighting fixture exceeds 80t, and the corresponding cables and wires are selected. When there are special requirements for lead-in cables or wires, specifications, models and applicable temperatures should be indicated.
d Lighting appliances with batteries must state the type, nominal voltage and nominal capacity of the batteries to avoid loss and danger.
e For spotlight and similar explosion-proof lamps, the shortest distance should be marked to prevent the irradiated objects from being scorched or burned.
f Ballast coil rated operating temperature tω(c), capacitor rated operating temperature tc(c), wiring diagram.
Line description.
1. Select a location.
Lay the circuit in a location where the risk of explosion is low or away from the source of the release.
2. The choice of laying method.
In explosion-hazardous environments, wires mainly include explosion-proof steel pipe wiring and cable wiring.
3. Isolation and sealing.
When laying wire troughs and protective pipes, cable pipes, cables or steel pipes, they should be tightly blocked with non-combustible materials when passing through the partition walls and floors between areas with different levels of explosive hazardous environments.
4. Selection of wire material.
In the explosive, dangerous, and dangerous level 1 area, the distribution line should use copper core wire or cable. In places with severe vibration, please choose multiple copper core flexible wires or more.
Benwei Lighting is an LED Tube, LED flood light, LED Panel Light, LED High Bay, LED manufacturer with 12 years of experience. If you want to purchase a high-quality LED flood light or have a more in-depth understanding of the application of LED flood lights, please contact send us inquiry， our web: https://www.benweilight.com/.
