LED Explosion proof Lamp Knowledge Popularization Points

With the exception of the light source being an LED, LED explosion-proof lamps operate on the same principle as other types of explosion-proof lamps. It describes a number of particular actions done to stop nearby explosive mixes from igniting, including gas environments, explosive dust environments, and explosive gas environments. Oil fields, power facilities, chemical companies, petroleum, and the military all employ LED explosion-proof lamps, which are currently the most energy-efficient explosion-proof lighting fixtures.
Limiting the temperature of the shell surface, component surface, or electronic component surface that comes into contact with explosive gases and dust, as well as limiting the temperature of the electrical contact surface below its minimum ignition temperature or ignition temperature, are two crucial explosion-proof principles of LED explosion-proof lamps. Waterproof drivers are necessary for outdoor LED explosion-proof lighting. Gas station LED explosion-proof lighting must be shock-resistant!
Explosion-proof lighting fixture classification
National standards specify the type of explosion-proof light, its level, and its temperature group.

2. There are five primary categories based on the type of explosion-proof material: dust explosion-proof, positive pressure, higher safety, non-sparking, and explosion-proof. Along with the previously listed explosion-proof types, it can also be composited or merged with other types, as well as special types.
3. It can be categorized into Class I, II, and III based on the type of anti-electric shock protection. The purpose of anti-electric shock protection is to keep the easily touched, quickly charged elements of the explosion-proof lamp housing from causing electric shock to the human body or sparking when conductors with different potentials come into contact, igniting explosive combinations.
Class A: All accessible conductive components that are not charged during regular operation are connected to the protective grounding conductor in a fixed circuit based on basic insulation.
Class B II: without grounding protection, employing strengthened or double insulation as safety precautions.
Class III: Make use of a safe voltage that doesn't exceed 50V in practice; no voltage value higher than this will be produced.
D0 category: depending entirely on simple insulation as a safeguard. Only a small percentage of explosion-proof lighting fixtures are Class II or III, with the bulk being Class I lighting fixtures with anti-electric shock protection. For instance, all-plastic bulbs and flashlights that are resistant to explosions.
4. Arranged according to the shell's degree of protection: There are several shell protection techniques to safeguard electrical insulation from hazards like flashover, short circuit, or damage by keeping dust, solid foreign objects, and water out of the lamp chamber and from touching or collecting on live parts. To indicate the level of enclosure protection, use the distinctive letter "IP" followed by two digits. The ability to guard against dust, solid foreign objects, and persons is indicated by the first number. separated into 0–6 levels. Explosion-proof lighting fixtures are sealed fixtures that have a dust-proof capacity of at least level 4 or higher. The second digit, which is divided among levels 0–8, indicates how well they protect against water.
5. Arranged according to the lamp design's supporting surface material: It is possible to install indoor explosion-proof bulbs on a variety of surfaces made of common flammable materials, like timber walls and ceilings, as long as the temperature of the installation surface does not rise above the acceptable level. They can be separated into two groups based on whether or not explosion-proof bulbs can be placed directly on top of common flammable materials.
Lamps that can only be installed on non-flammable surfaces are one type.
The other kind consists of bulbs with indicated symbols that can be directly installed on the surface of common flammable materials.
6. It can be separated into fixed, moveable, and portable versions based on how it is installed and used.
Features of performance
With its uniform illumination within its range and illumination angle of up to 220 degrees, the lighting fixture has a unique light distribution that makes efficient use of the light. Its soft lighting, lack of glare, and ability to prevent eye fatigue in workers improves job performance.
The brightest LED in the world, which uses only 40% of the power of metal halide lamps, is used as the light source.
All of the power supply's essential parts are chosen from reputable, reliable, and efficient brands.
Adopting a special heat dissipation structure and using conduction and heat transfer techniques to speed up heat conduction would ensure good heat dissipation of LEDs, extending their lifespan to 100,000 hours.
The type that may be used in combustible and explosive areas in a variety of sectors is the most explosion-proof. It can be connected in parallel, which removes the need for junction boxes and installation expenses.
The shell uses advanced surface spraying technology, which is appropriate for a variety of tough settings and resistant to wear, corrosion, dust, and water.
To improve the floodlight's illumination, cover the light source surface with a spotlight when utilizing LED explosion-proof lights.
Road sealing, explosion-proof inherent safety, protection level IP65, anti-corrosion level WF1, and the ability to be waterproof, dustproof, and explosion-proof are all important considerations when designing LED explosion-proof lights for use in distilleries.
LED explosion-proof lights used as oilfield explosion-proof lights should be made with anti-fall rings. Make sure the oilfield wellhead vibrates to keep the lighting fixtures from falling off because the bolts aren't attached, and the anti-fall ring will keep them in place.
standard LED lights that are explosion-proof and have been approved after a fire inspection.
The explosion proof mark on the nameplate logo A. B The product name, model, manufacturer, registered trademark, manufacturing date, and other details are all included in the basic logo.
C The following are examples of performance safety signs: rated voltage, current, nominal frequency, light source power and quantity, allowable ambient temperature (which is only between -20 and +40 °C and may not be marked), specific applicable environmental signs (like the name or molecular formula of the combustible gas for products that are only applicable to a certain explosive gas mixture), lamp classification signs (like "numbers"), etc.
The product has been formally inspected and approved by the explosion-proof inspection station, as evidenced by the D explosion proof certificate number. Certain products can only be used under specific safety conditions, as indicated by the "x" sign that appears after the explosion-proof certificate number. The lamp housing or product handbook should clearly and conspicuously mention the specified conditions.
D More details. Along with the aforementioned marks, the lamp, the built-in ballast, or the product handbook that comes with the lamp should all have comprehensive instructions for correct installation, usage, and maintenance.

For instance:
Explosion-proof bulbs can be used in position A. Certain explosion-proof bulbs can only be used and fitted in specific angles or positions. This is due to the fact that variations in working position will result in modifications to the maximum surface temperature and thermal distribution of the explosion-proof lamp surface. The primary goal of limiting the operating position of explosion-proof bulbs is to regulate the maximum surface temperature and keep it from rising above the temperature range indicated by the lamp itself, which could result in hazardous temperatures. Furthermore, modifications to the work site may also alter the electrical components, insulation materials, lighting fixtures' lifespan, and insulation effectiveness, among other aspects of light sources. Therefore, it is necessary to clearly identify explosion-proof bulbs with restricted installation and usage regions.
Explosion-proof lamps with unique light source characteristics must display the name, model, bulb shape and size, and manufacturer of the light source in order to lower the maximum surface temperature of the lamps and the temperature grouping level of the items. If left unchecked, the explosion-proof lamp's maximum surface temperature could be higher than the explosive gas mixture's ignition temperature in the operational environment when the user swaps it out for another bulb of the same wattage, which could result in an explosion.
For the purpose of choosing the appropriate cable and wire, it should be marked if the insulating material of the power cable or wire is exposed to a maximum temperature of more than 80 tons within the lamp under the most adverse conditions of typical operation. Specifications, models, and relevant temperatures should be mentioned when cables or wires must be introduced in accordance with special regulations.
To prevent losses and hazards, luminaires that use batteries must be marked with the battery's type, nominal voltage, and nominal capacity.
The shortest distance from the lit object should be marked on explosion-proof lamps with spotlights and similar features to avoid burning the illuminated object.
The wiring schematic, the rated maximum operating temperature of the capacitor tc (C), and the rated maximum operating temperature of the F ballast coil t ω (C)
Description of the route
1. Choosing a location
Electrical wiring ought to be installed far from the source of the discharge or in areas with little risk of explosion.
2. Choosing the laying technique
The majority of electrical circuits in explosive hazardous situations are made of cable and steel pipe wire that is explosion-proof.
3. Sealing and isolation
Non-combustible materials should be used to tightly block protective pipes, cables, or steel pipes that pass through floors or walls between areas with varying degrees of explosive hazardous conditions, as well as when installing electrical circuits in trenches.
4. Wire material selection
Copper core wires or cables should be utilized for distribution lines within the boundaries of the Zone 1 explosive hazardous environment. Aluminum core power cables are not permitted underground in coal mines; instead, multiple stranded copper core flexible wires or multiple stranded copper core cables should be utilized in places with high vibrations.
Power lines shall utilize aluminum core wires or cables with a cross-sectional area of 4mm2 or greater inside the boundaries of Zone 2 of the explosive hazardous environment, while lighting lines can use cables with a cross-sectional area of 2.5mm2. cables or wires with an aluminum core.
5. Permit the carrying capacity of current
The conductor's permitted current carrying capacity should be at least 1.25 times the fuse's rated current and the set current of the circuit breaker's long-term overcurrent release when choosing the insulation wire and cable cross-sections for Zones 1 and 2. The branch line that supplies power to the low-voltage cage induction motor should have a current carrying capacity of at least 1.25 times the motor's rated current.
6. Electrical circuit connections
Zone 1 and Zone 2 electrical circuit intermediate joints must be placed inside splice boxes or explosion-proof junction boxes that are appropriate for the hazardous environment. While Zone 2 can utilize more safety junction boxes, Zone 1 should use explosion-proof junction boxes.
If Zone 2 electrical circuits contain aluminum core cables or wires, users must have access to dependable ones that are easy to install and maintain.
issues that require consideration
1. To enhance the light efficiency and heat dissipation capabilities of explosion-proof lamps, routinely remove dust and debris from their exterior shell. Depending on how protective the lamp housing is, the cleaning technique may involve wiping with a moist cloth, using water spray (above the lamp's designated shade), or both. To avoid static electricity, it is completely forbidden to use a dry cloth to clean the lamp's plastic shell (transparent portions) while the power is turned off.
2. Verify that the protective net is loose, disconnected, corroded, etc., and that no foreign items have affected the transparent sections. If there is, it needs to be taken out of service and promptly fixed or replaced.
3. To prevent the long-term abnormal state of electrical components like ballasts owing to the inability to start the light source, lights should be turned off as soon as possible and replacements should be notified if the light source is broken.
4. To guarantee the protective performance of the housing, any water buildup in the lamp chamber of lamps used in humid conditions should be promptly removed and the sealing components replaced.
Pay attention to the warning signs and turn off the electricity before opening the lampshade's cover.
6. Examine the explosion-proof joint surface after opening the cover to see if it is still intact, if the rubber seal has solidified or become sticky, if the wire insulation layer has turned green and carbonized, and if there are burn scars and deformations on the electrical and insulation components. If these issues are discovered, they ought to be fixed and replaced very away.
7. To increase the lamp's light efficiency, lightly wash the return light and transparent sections with a damp cloth before shutting the cover. The surface of the explosion-proof joint should be lightly coated with 204-1 displacement type anti-rust oil. The sealing ring's ability to seal in its initial position should be considered before closing the lid.
8. Avoid disassembling or opening the lamp's sealed portion too often. More in keeping with the new national explosion-proof technology is the patent area road sealing technology.

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