Many people think that explosion-proof lights will not explode when they use them; in fact, people understand the wrong meaning. Explosion-proof lamps can also burst, but this explosion happens inside the lamp.
One of the fundamental explosion-proof principles of explosion-proof lamps is to limit the temperature of the shell surface, the surface of parts or the surface of electronic components in contact with explosive gas and dust, and to limit the temperature of the electrical contact surface below its small ignition temperature or ignition temperature.
The explosion-proof lamp can withstand the internal explosion of combustible mixtures that have entered the housing without damage and through any joint surface or hole in the housing without igniting the electrical equipment housing in an external explosive environment formed by one or more gases or vapors.
Like when hydrogen got inside the explosion-proof light fixtures and caused an explosion. The unique structure of the explosion-proof lamp housing allows the explosion to be carried out without affecting the safety of personnel and equipment outside. Of course, the tightness of the explosion-proof lamp is still better, and the available gas will not quickly enter. Workers in the replacement of light bulbs, remember to power off replacement, as long as by the regulations will not be dangerous.