People usually think that explosion-proof lighting refers to lighting equipments resistant to ignition and explosions. Well, this is a great misconception! Explosion-proof lighting can potentially ignite flammable and explosive gases in the atmosphere but explosion proof light fixtures are designed so, that they can prevent these external explosions in a hazardous location.
In standard light fixtures, the bulb, wiring, and switches are exposed to the local atmosphere. Any spark in the wires, significant energy changes, or even a heated bulb can cause explosions in an ignitable atmosphere. However, explosion-proof light fixtures are usually encased in a thick frame made up of sturdy material like steel and aluminum. These light fixtures are provided with extremely heavy-duty lenses to withstand harsh conditions and avoid cracks and leaks. So, any explosion that may occur stays inside the fixture avoiding any damage to the atmosphere.
Application of ex-proof lights
Explosion-proof lighting finds extensive use in chemical industries where the atmosphere is usually risky and flammable. The applications of the light fixtures depend upon the type of light one uses.
There are three classes of explosion proof lights known to date i.e. Class I, II, and III. They are all different from each other and divided into two separate divisions.
- Class I lights are used in the atmosphere consisting of flammable gases, liquids, or vapors.
- Class II lights work best for flammable concentrations of explosive dust in the environment.
- Class III is best for the atmosphere having ignitable fibers that produce flammable flyings.
Note, division I for each class include fixtures used under normal operating conditions whereas; division II lights are designed for abnormal/harsh operating conditions.
Explosion-proof light fixtures are multipurpose. Their common uses include general lighting in hazardous environments, floodlighting, compact lighting, etc. Ex-proof lighting is now being incorporated in hand lamps and emergency lighting systems as well. Hence, any business that operates in a potentially risky environment, having explosive and flammable vapors, requires explosion-proof lighting.
How is explosion-proof lighting promising?
Explosion-proof lighting has emerged as one of the most promising lighting technologies as it offers a wide variety of benefits. Explosion-proof light fixtures are highly durable as compared to standard lights. They can withstand the harsh operating environment, are usually crack-resistant, and offer minimum maintenance cost.
Ex-proof lights offer greater mobility and can be easily transferred from one place to another or other transport machinery, without any damage. All thanks to their stronger frames and reliable glass lenses! Businesses requiring mobile illumination must opt for explosion-proof lights. These lights also incorporate LED technology offering greater energy-efficiency and cost-effectiveness. Last but not the least, explosion-proof lights are eco-friendly. They don’t contain harmful substances like mercury and lead, as present in standard light fixtures. Thus, they don’t offer any environmental damage.
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