Technical data Explosion-proof marks: Exd Ⅱ CT4 Gb/Ex tD A21 IP66 T130 ℃ • protection grade: IP66 • rated working voltage: A.C.220V • rated power: see the type selection table • incoming thread: g3/4 • corrosion protection grade: WF2 Product features • the shell is made of aluminum alloy with high-pressure electrostatic spraying on the surface; • high strength tempered glass lamp shade, stainless steel exposed fasteners; • finned structure shell for cooling and cooling; • "O" seal ring is arranged on the flameproof joint surface of the lamp, with good waterproof performance; • the protective network is made of galvanized carbon steel and sprayed with plastics on the surface, double anticorrosion; • steel pipe wiring. • in a separate structure, an explosion-proof ballast (junction box) shall be provided with a high power factor of cosine pressure greater than or equal to 0.90;