This document specifies the terms and definitions, types, basic parameters and working environment, basic requirements, technical requirements, test methods, inspection rules, markings, packaging, transportation and storage of mine explosion-proof and intrinsically safe lighting signal comprehensive protection devices. quality promise. This document applies to mine explosion-proof and intrinsically safe lighting signal comprehensive protection devices (hereinafter referred to as devices) with rated voltages of 1 140 V and below in coal mines.
T/ZZB 2872-2022 history
2022T/ZZB 2872-2022 Flameproof intrinsically safe comprehensive protection device of lighting and signal for coal mine