The housing is made of high-strength aluminum alloy or stainless steel,forming a robust structure.The mating surfaces are precision-machined to create a flameproof enclosure.All electrical components(driver,terminals)are sealed within this flameproof chamber.Even if an internal explosion occurs,flames and hot gases are safely cooled and vented through specific flamepaths,preventing ignition of the external environment.Special heat dissipation designs(e.g.,external fins,internal heat pipes)ensure the surface temperature remains below the ignition temperature group of the specific gas/dust(e.g.,T4≤135°C).The glass cover is typically high-strength tempered glass,resistant to impact and thermal shock.
The common power range is 50W to 200W,with an efficacy of around 120-140 lm/W.It must be certified by national authorities for explosion protection,clearly marked with the Ex rating,temperature class,and protection rating,e.g.,Ex d IIB T4 Gb/Ex tD A21 IP66 T80°C.The operating voltage is AC220V.It offers excellent corrosion resistance(e.g.,WF2)for corrosive chemical plant atmospheres.Typically includes a convenient explosion-proof junction box and certified cable glands(Grafo fittings).
Strictly used within designated explosive hazardous areas,such as chemical plant roadways,perimeter areas of refinery units,LNG terminals,mine entrance areas,and perimeters of grain processing facilities.Installation must strictly adhere to explosion-proof electrical codes,including cable selection,routing,grounding,and protection.Maintenance must be performed by qualified personnel,ensuring flameproof surfaces are clean and intact,and fasteners are properly tightened.Selection and procurement must first confirm the hazardous medium,zone classification,and temperature class of the location to ensure the luminaire’s explosion-proof rating matches or exceeds the site requirements.
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