MT 644-1997
Active
T/ZZB 0807-2018
Active
Group standards
T/ZZB 0807-2018 QJR series explosion-proof and intrinsic safety vacuum AC soft starter for mining purposes
T/ZZB 0807-2018 QJR series explosion-proof and intrinsic safety vacuum AC soft starter for mining purposes
Price:
$ 20.00
Basic Information
Standard Code:
T/ZZB 0807-2018
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:
2018-11-30
Implement Date:
2018-12-31
Scope
Main technical content: This standard specifies the terms and definitions, product classification, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality commitments of the QJR series of explosion-proof and intrinsically safe vacuum AC soft starters for use in mines. This standard applies to the QJR series of explosion-proof and intrinsically safe vacuum AC soft starters (hereinafter referred to as soft starters) with a rated voltage of 1,140 V or less in underground 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