MT 644-1997
Active
MT/T 1264-2025
Active
Industry standards-Coal
MT/T 1264-2025 High‑voltage distribution device multifunction protection relay for coal mine
MT/T 1264-2025 High‑voltage distribution device multifunction protection relay for coal mine
Price:
$ 43.00
Basic Information
Standard Code:
MT/T 1264-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Special equipment and supplies for coal mines
ICS Name:
Other mining equipment
Publish Date:
2025-06-30
Implement Date:
2025-12-30
Pages:
24 pages
Scope
This document specifies the types and basic parameters, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of comprehensive protectors used in high-voltage distribution equipment in coal mines (hereinafter referred to as "protectors").
This document is applicable to the inspection of comprehensive protectors in explosion-proof high-voltage distribution equipment in coal mines operating at an AC frequency of 50 Hz and voltages of 3.3 kV, 6 kV, and 10 kV.
Development Information
Referenced Standards
GB/T 2423.1-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests A:Cold
GB/T 2423.2-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests B:Dry heat
GB/T 2423.4-2008 Environmental testing for electric and electronic products—Part 2:Test method—Test Db:Damp heat,cyclic(12 h+12 h cycle)
GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements
GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i”
GB/T 7261-2016 Basic testing method for relaying protection and security automatic equipment
GB/T 14598.24-2017 Measuring relays and protection equipment—Part 24:Common format for transient data exchange(COMTRADE) for power systems
GB/T 17626.2-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test
GB/T 17626.3-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 3:Radiated,radio-frequency,electromagnetic field immunity test
GB/T 17626.4-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burstimmunity test
GB/T 17626.5-2019 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test
GB/T 17626.6-2017 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields
NB/T 10051-2018 Coal mine power supply anti-jump system
MT 210-1990 The basic test methods for electrical products used in coal mine communication, detection, and control
MT/T 661-2011 Common Technical Requirements for Electrical Equipment for Coal Mine Underground Workings
MT/T 899-2000 Information transmission device for coal mine
MT/T 1137-2011 Mining Infrared Remote Control General Technical Conditions
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