GB 12476.5-2013: Electrical apparatus for use in the presence of combustible dust -- Part 5: Protection by enclosures “tD”

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Scope

This part of GB 12476 is applicable to electrical equipment which is protected by a housing and a restricted surface temperature in a flammable dust environment. In the ring
The presence of flammable dust can cause a fire or explosion hazard. This section specifies the design, construction and testing of electrical equipment
Claim.
This part is a supplement to the general requirements of GB 12476.1.
Note. GB 12476.2 gives guidelines for the selection and installation of electrical equipment. Electrical equipment within this section may also comply with other standards (eg GB 3836.1)
The supplementary requirements.
To prevent ignition is mainly to limit the shell and can be in contact with other surfaces of the dust surface of the highest surface temperature, the use of "dust" or "dust" outside
Shell to limit dust entry.
Electrical equipment used in environments where combustible gases and combustible dust may appear simultaneously or separately, requiring additional
Plus protection measures.
When the electrical equipment must meet other environmental requirements, such as water and corrosion and the need to use other protection methods, the protection method
Should not have an adverse effect on the integrity of the shell.
This part does not apply to those who do not need the atmosphere of oxygen can burn the fire explosives dust or spontaneous combustion material.
This part does not apply to electrical equipment that is hazardous to methane and/or flammable dust and coal mine ground equipment.
This section does not take into account the risk of flammability or toxic gases volatilized from dust.

Basic Data

Standard ID	GB 12476.5-2013 (GB12476.5-2013)
Description (Translated English)	Electrical apparatus for use in the presence of combustible dust -- Part 5: Protection by enclosures ��tD��
Sector / Industry	National Standard
Classification of Chinese Standard	K35
Classification of International Standard	29.260.20
Word Count Estimation	12,183
Quoted Standard	GB 4208-2008; IEC 61241-0-2013
Adopted Standard	IEC 61241-1-2004, IDT
Regulation (derived from)	National Standards Bulletin No. 25 of 2013
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the design, construction and testing requirements for electrical equipment. This standard is complementary to the general requirements of GB 12476. 1. Prevent ignition of the main housing and the other surface is capable of limitin