GB 7957-2023 Active National standards force_standard

GB 7957-2023 Safety technical requirement for cap lamps in coal mine

Publish Date: 2023-09-08 Implement Date: 2025-04-01 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: GB 7957-2023

Standard Type: National standards

Standard Status: Active

is_force_gb: yes

CCS Name: Explosion-proof electrical appliances

ICS Name: Electric equipment for use in explosive environments

Publish Date: 2023-09-08

Implement Date: 2025-04-01

Pages: 20 pages

Scope

This document specifies the performance and safety requirements, marking, packaging, transportation, and storage of mining lamps for coal mines (hereinafter referred to as "mining lamps"). It provides a product classification that facilitates technical specifications and describes the corresponding test methods.
This document applies to mining lamps, including those used in coal mines and those used to power other equipment.

Development Information

Word Count: 31 Thousand words Pages: 20 pages

Replace the following standards

GB/T 7957-2017 General requirements for construction,performance and explosion protected testing of caplights for use in mines susceptible to firedamp

Referenced Standards

GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements 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 16935.3-2016 Insulation coordination for equipment within low-voltage systems— Part 3:Use of coating,potting or moulding for protection against pollution MT/T 1051-2007 GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods 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 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) MT/T 818.10-2009 coal mine electrical cables - Part 10: worker cap light wires for coal mines MT/T 395-2007 Protector of cap lamp GB/T 191-2025 Graphical symbols marking for handling and storage of packages

Adopt standards

IEC 60079-35-1:2011 IEC 60079-35-2:2011

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