GB 12476.6-2010
Electrical apparatus for use in the presence of combustible dust.Part 6:Protection by encapsulation "mD" (English Version)

Standard No.

GB 12476.6-2010

Language

Chinese, Available in English version

Release Date

2010

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2022-05

Replace By

GB/T 3836.9-2021

Latest

GB/T 3836.9-2021

Scope

This section should be used together with the general requirements of GB 12476, which apply to electrical equipment for potting protection and limiting surface temperature, unless otherwise specified. This standard applies to electrical equipment protected by potting type "mD" and limiting surface temperature in combustible dust atmospheres. In this environment, combustible dust can be present in quantities that can create a fire or explosion hazard. This part specifies the design, construction and test requirements for electrical equipment, electrical equipment components and Ex components with a rated voltage not exceeding 10kV. Electrical equipment used in an environment where combustible gas and combustible dust may occur simultaneously or separately requires some additional protective measures. This section does not apply to those pyrotechnic dusts or pyrophoric substances that do not require atmospheric oxygen to burn. This section does not apply to electrical equipment used in underground coal mines and coal mine ground installations where gas and/or combustible coal dust pose a hazard. This section does not consider the hazards caused by flammable or toxic gases emitted by dust. This section does not include other explosion-proof types, only applicable to potting type.

GB 12476.6-2010 Referenced Document

• GB 12476.4-2010 Electrical apparatus for use in the presence of combustible dust.Part 4:Protection by intrinsic safety "iD"
• GB 19212.7-2006 Safety of power transformers, power supply units and similar. Part 7: Particular requirements for safety isolating transformers for general use
• GB 3836.3-2010 Explosive atmospheres.Part 3:Equipment protection by increased safety "e"
• GB 3836.4-2010 Explosive atmospheres.Part 4:Equipment protection by intrinsic safety "i"
• GB 9364.1 Miniature fuses. Part 1: Definitions for miniature fuses and general requirement for miniature fuse-links
• GB 9364.2 Miniature fuses. Part 2: Cartridge fuse-links
• GB 9364.3 Miniature fuses. Part 3: Sub-miniature fuse-links
• GB 9364.4 Miniature fuses. Part 4: Universal modular fuse-links (UMF)
• GB 9364.6 Miniature fuses--Part 6: Fuse-holders for miniature cartridge fuse-links
• GB 9816-2008 Thermal-links.Requirements and application guide
• GB/T 1034-2008 Plastics.Determination of water absorption
• GB/T 1408.1-2006 Electrical strength of insulating materials-Test methods-Part 1:Tests at power frequencies
• GB/T 16855.1-2005 Safety of machinery.Safety-related parts of control systems.Part 1:General principles for design
• GB/T 16935.1-2008 Insulation coordination for equipment within low-voltage systems.Part 1:Principles,requirements and tests
• GB/T 8897.1-2003 Primary batteries--Part 1: General
• IEC 60285 Alkaline secondary cells and batteries - Sealed nickel-cadmium cylindrical rechargeable single cells
• IEC 60622 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-cadmium prismatic rechargeable single cells
• IEC 60664-1:1992 Insulation coordination for equipment within low-voltage systems; part 1: principles, requirements and tests
• IEC 61150 Corrigendum 1 - Alkaline secondary cells and batteries - Sealed nickel-cadmium rechargeable monobloc batteries in button cell design
• IEC 61241-0:2004 Electrical apparatus for use in the presence of combustible dust - Part 0: General requirements
• IEC 61241-1:2004 Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"

GB 12476.6-2010 history

• 2021 GB/T 3836.9-2021 Explosive atmospheres—Part 9：Equipment protection by encapsulation “m”
• 2010 GB 12476.6-2010 Electrical apparatus for use in the presence of combustible dust.Part 6:Protection by encapsulation "mD"

GB 12476.6-2010 Electrical apparatus for use in the presence of combustible dust.Part 6:Protection by encapsulation "mD" was changed to GB/T 3836.9-2021 Explosive atmospheres—Part 9：Equipment protection by encapsulation “m”.

GB 12476.6-2010 -All Parts