MT 871-2000
Mining type flameproof switchgear with vaccum circuit breaker for low-voltage alternate circuit (English Version)
- Standard No.
- MT 871-2000
- Language
- Chinese, Available in English version
- Release Date
- 2000
- Published By
- Professional Standard - Coal
- Status
- 2011-09
- Replace By
- MT 871-2011
- MT/T 871-2011
- Latest
- MT 871-2011
- MT/T 871-2011
- Scope
- This standard specifies the classification, characteristics, structural and performance requirements, test methods, inspection rules, marking, packaging, transportation and storage of explosion-proof low-voltage AC vacuum feed switches for mining (hereinafter referred to as the electrical switch). This standard is applicable to distribution switches or branch feed switches for AC 50Hz, voltage to 1200V circuits in mines containing gas and coal dust. When over-cut, short-circuit, leakage and under-voltage faults occur in the circuit, the electrical switch can automatically cut off the power supply. When used as a main distribution switch, it can also be used with the temperature protection element of the transformer to achieve overheat protection and with the high-voltage side switch of the transformer to achieve electrical protection. interlocking.
MT 871-2000 history
- 2011 MT 871-2011 Mining explosion-proof switchgear with vacuum circuit breaker for low-voltage alternate circuit
- 2000 MT 871-2000 Mining type flameproof switchgear with vaccum circuit breaker for low-voltage alternate circuit
