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Explosion proof certification is the process of determining that equipment meets the requirements of explosion proof standards, conducting type tests and routine tests, and issuing relevant certificates of conformity. The certificate can be specific to Ex equipment or Ex components. What is being said hereExplosion proof standardWhat does it refer to?

According to whether it is electrified, explosion-proof products are divided into explosion-proof electrical equipment and explosion-proof non electrical equipment; According to whether the explosive medium used in the workplace belongs to gas or dust, it is divided into gas explosion-proof standards and dust explosion-proof standards; According to the different explosion-proof types adopted by the product, it can be divided into various explosion-proof types such as intrinsic safety, explosion-proof, and sealed......

hereZhongnuo TestingSummarize the commonly used explosion-proof types and explosion-proof certification standards for your reference.

1、 Electrical equipment used in explosive gas environments

1. Explosion proof type: Intrinsic safety type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB3836.4-2010 Explosive atmospheres Part 4: Equipment protected by intrinsic safety type "i"

2. Explosion proof type: Explosion proof type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB3836.2-2010 Explosive atmospheres Part 2: Equipment protected by an explosion-proof enclosure "d"

3. Explosion proof type: increased safety type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB3836.3-2010 Explosive Atmospheres Part 3: Equipment protected by increased safety "e"

4. Explosion proof type: positive pressure type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB/T 3836.5-2017 Explosive Atmospheres Part 5: Equipment Protected by Positive Pressure Enclosures p

5. Explosion proof type: oil immersed type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB/T 3836.6-2017 Electrical Equipment for Explosive Gas Atmospheres Part 6: Oil Immersed "o"

6. Explosion proof type: sand filled type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB/T 3836.7-2017 Electrical Equipment for Explosive Gas Atmospheres Part 7: Sand filled "q"

7. Explosion proof type: n-type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB3836.8-2014 Explosive Atmospheres Part 8: Equipment protected by "type n"

8. Explosion proof type: pouring sealing type

Applicable explosion-proof standards:

GB3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB3836.9-2014 Explosive Atmospheres Part 9: Equipment protected by pouring type "m"

2、 Electrical equipment used in areas with combustible dust

1. Explosion proof type: Intrinsic safety type

Applicable explosion-proof standards:

GB 12476.1-2013 Electrical Equipment for Combustible Dust Environments Part 1: General Requirements

GB 12476.4-2010 Electrical Equipment for Combustible Dust Environments Part 4: Intrinsic Safety iD

2. Explosion proof type: shell protection type

Applicable explosion-proof standards:

GB 12476.1-2013 Electrical Equipment for Combustible Dust Environments Part 1: General Requirements

GB 12476.5-2013 Electrical Equipment for Combustible Dust Environments Part 5: Shell Protection Type tD

3. Explosion proof type: pouring sealing type

Applicable explosion-proof standards:

GB 12476.1-2013 Electrical Equipment for Combustible Dust Environments Part 1: General Requirements

GB 12476.6-2010 Electrical Equipment for Combustible Dust Environments Part 6: Sealed Protection mD

4. Explosion proof type: positive pressure type

Applicable explosion-proof standards:

GB 12476.1-2013 Electrical Equipment for Combustible Dust Environments Part 1: General Requirements

GB 12476.7-2010 Electrical Equipment for Combustible Dust Environments Part 7: Positive Pressure Protection Type pD

3、 Non electrical equipment used in explosive hazardous areas

1. Explosion proof type: current limiting shell type

Applicable explosion-proof standards:

GB 25286.1-2010 Non electrical equipment for explosive environments Part 1: Basic methods and requirements

GB 25286.2-2010 Non electrical equipment for explosive atmospheres Part 2: Current limiting enclosure type "fr"

2. Explosion proof type: Explosion proof shell type

Applicable explosion-proof standards:

GB 25286.1-2010 Non electrical equipment for explosive environments Part 1: Basic methods and requirements

GB 25286.3-2010 Non electrical equipment for explosive atmospheres Part 3: Explosion proof enclosure type d

3. Explosion proof type: structural safety type

Applicable explosion-proof standards:

GB 25286.1-2010 Non electrical equipment for explosive environments Part 1: Basic methods and requirements

GB 25286.5-2010 Non electrical equipment for explosive atmospheres Part 5: Structural safety type c

4. Explosion proof type: controlled ignition source type

Applicable explosion-proof standards:

GB 25286.1-2010 Non electrical equipment for explosive environments Part 1: Basic methods and requirements

GB 25286.6-2010 Non electrical equipment for explosive atmospheres Part 6: Controlled ignition source type "b"

5. Explosion proof type: liquid immersion type

Applicable explosion-proof standards:

GB 25286.1-2010 Non electrical equipment for explosive environments Part 1: Basic methods and requirements

GB 25286.8-2010 Non electrical equipment for explosive atmospheres Part 8: Liquid immersion type k

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