MT 644-1997
Active
T/ZZB 2872-2022
Active
Group standards
T/ZZB 2872-2022 Mining explosion-proof and intrinsic safety integrated lighting signal protection device
T/ZZB 2872-2022 Mining explosion-proof and intrinsic safety integrated lighting signal protection device
Price:
$ 20.00
Basic Information
Standard Code:
T/ZZB 2872-2022
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Special equipment and supplies for coal mines
ICS Name:
Other mining equipment
Publish Date:
2022-12-08
Implement Date:
2022-12-31
Scope
Main technical content: This document specifies the terms and definitions, types, basic parameters, working environment, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality commitments of mine-used explosion-proof and intrinsically safe lighting and signaling comprehensive protection devices. This document is applicable to mine-used explosion-proof and intrinsically safe lighting and signaling comprehensive protection devices (hereinafter referred to as "devices") with a rated voltage of 1,140 V or lower in coal mines.
Development Information
Related Standards
MT 646-1997
Abolished
MT 646-1997 Frictional metal prop
MT 668-1997
Replaced
MT 668-1997 Technical Conditions for Flame-Retardant Steel-Mesh-Core Conveying Belt for Coal Mines
MT 669-1997
Active
MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining
MT/T 154.7-1997
Active
MT/T 154.7-1997 Model designation of separating equipment for coal
MT/T 660-1997
Active