MT/T 1265-2025 Active Industry standards-Coal

MT/T 1265-2025 Mining explosion-proof high-voltage alternating current vacuum electromagnetic contactors

Publish Date: 2025-06-30 Implement Date: 2025-12-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: MT/T 1265-2025

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: High-voltage switchgear

ICS Name: Electric equipment for use in explosive environments

Publish Date: 2025-06-30

Implement Date: 2025-12-30

Pages: 28 pages

Scope

This document specifies the classification and product models, rated values, and requirements of explosion-proof high-voltage AC vacuum electromagnetic starters for mining (hereinafter referred to as "starters"), describes the corresponding test methods and inspection rules, and stipulates the contents of marking, packaging, transportation, and storage.
This document is applicable to starters used in coal mines with a rated frequency of 50 Hz and voltages of 3.3 kV, 6 kV, and 10 kV for directly or remotely starting or stopping, reversing, and speed-controlling three-phase squirrel-cage asynchronous motors, while also providing protection for the motor and related circuits.

Development Information

Word Count: 37 Thousand words Pages: 28 pages

Referenced Standards

GB 311.1-1997 Insulation co-ordination for high voltage transmission and distribution equipment GB/T 311.1-2012 Insulation co-ordination—Part 1:Definitions,principles and rules GB/T 762-2002 Standard current ratings GB 1985-2004 High-voltage alternating-current disconnectors and earthing switches GB/T 1985-2014 High-voltage alternating-current disconnectors and earthing switches GB/T 1985-2023 High-voltage alternating current disconnectors and earthing switches GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic 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 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety “e” GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” GB/T 10111-1988 Methods for random sampling by utilizing dices of random number GB/T 10111-2008 Generation of random numbers and procedures applied to sampling inspection for product quality GB/T 11022-2020 Common specifications for high-voltage alternating-current switchgear and controlgear standards GB/T 14808-2016 High-voltage alternating current contactors,contactor-based controllers and motorstarters GB/T 16927.1-1997 High-voltage test techniques Part 1:General test requirements GB/T 16927.1-2011 High-voltage test techniques—Part 1:General definitions and test requirements AQ 1043-2007 Mining Product Safety Mark Identification JB/T 8739-2015 Mining explosion-proof high-voltage distribution equipment MT/T 111-2011 Mining explosion-proof low-voltage AC vacuum electromagnetic starter。 MT/T 154.2-1996 The method for preparing product model numbers of coal mining electrical equipment and management measures MT/T 154.2-2019 Coal mining electromechanical product model numbering method - Part 2: Model numbering method for electrical products MT/T 661-2011 Common Technical Requirements for Electrical Equipment for Coal Mine Underground Workings

Related Standards

GB 5590-1985 Replaced

GB 5590-1985 Mining type flameproof electric magnetic starters

Publish Date: 1985-11-20

GB 3836.9-1990 Replaced

GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m"

Publish Date: 1990-08-27

GB 3836.11-1991 Replaced

GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap

Publish Date: 1991-05-27

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

Publish Date: 1991-05-27

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

Publish Date: 1997-12-30

MT 703-1997 Replaced

MT 703-1997 Technical condition of electro-chemical type carbon monoxide instrumentation for coal mine

Publish Date: 1997-12-30