GB 5590-1985
Replaced
MT/T 429-2025
Active
Industry standards-Coal
MT/T 429-2025 Explosion-proof grounding protection device for coal mines
MT/T 429-2025 Mine explosion⁃proof leakage protection device
Price:
$ 65
Basic Information
Standard Code:
MT/T 429-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Special equipment and supplies for coal mines
ICS Name:
Electric equipment for use in explosive environments
Publish Date:
2025-09-28
Implement Date:
2026-03-28
Pages:
24 pages
Scope
This document is applicable to explosion-proof leakage protection devices for use in coal mine power supply systems with a frequency of 50 Hz, a rated voltage of 1140 V or less, and a three-phase neutral point that is not directly grounded.
Development Information
Replace the following standards
MT/T 198-1988
Related Standards
GB 3836.9-1990
Replaced
GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m"
GB 3836.11-1991
Replaced
GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap
GB 3836.12-1991
Replaced
GB 3836.12-1991 Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
GB 3836.13-1997
Replaced
GB 3836.13-1997 Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres
MT 703-1997
Replaced