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

Explosion proof products are divided into explosion-proof electrical equipment and explosion-proof non electrical equipment according to whether they are charged or not; According to whether the explosive medium used in the location 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 is divided into various explosion-proof types such as intrinsic safety type, explosion-proof type, and sealed type......

hereZhongnuo TestingSummarize the common explosion-proof types and explosion-proof certification standards we currently use for your reference.

1、 Electrical equipment used in explosive gas environments

1. Explosion proof type: intrinsic safety type

Applicable explosion-proof standards:

GB/T 3836.1-2021- Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.4-2021- Explosive atmospheres - Part 4: Equipment protected by intrinsic safety type "i"

2. Explosion proof type: Explosion proof type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.2-2021- Explosive Atmosphere Part 2: Equipment Protected by Flameproof Enclosures "d"

3. Explosion proof type: increased safety type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.3-2021- Explosive Atmosphere Part 3: Equipment Protected by Increased Safety Type "e"

4. Explosion proof type: positive pressure type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.5-2021 Explosive Atmosphere Part 5 Equipment Protected by Positive Pressure Enclosures

5. Explosion proof type: Oil immersed type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.6-2017 Electrical equipment for explosive gas atmospheres Part 6: Oil immersed type "o"

6. Explosion proof type: sand filled mold

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.7-2017 Electrical equipment for explosive gas atmospheres Part 7: Sand filled molds "q"

7. Explosion proof type: n-type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.8-2021- Explosive Atmosphere Part 8: Equipment Protected by "Type n"

8. Explosion proof type: Sealed type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.9-2021- Explosive Atmosphere Part 9: Equipment Protected by Sealed Type "m"

2、 Electrical equipment used in areas with combustible dust

1. Explosion proof type: intrinsic safety type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.4-2021- Explosive atmospheres - Part 4: Equipment protected by intrinsic safety type "i"

2. Explosion proof type:Anti dust ignition shell

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.31-2021- Explosive atmospheres - Part 31: Equipment protected by anti dust ignition enclosure "t"

3. Explosion proof type: Sealed type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.9-2021- Explosive Atmosphere Part 9: Equipment Protected by Sealed Type "m"

4. Explosion proof type: positive pressure type

Applicable explosion-proof standards:

GB/T 3836.1-2021-Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.5-2021 Explosive Atmosphere Part 5 Equipment Protected by Positive Pressure Enclosures

3、 Non electrical equipment used in explosive hazardous areas

1. Explosion proof type: h

Applicable explosion-proof standards:

GB/T 3836.1-2021 Explosive Atmosphere Part 1: General Requirements for Equipment

GB/T 3836.28-2021 Explosive Atmosphere Part 28: Basic Methods and Requirements for Non Electrical Equipment Used in Explosive Environments

GB/T 3836.29-2021 Explosive Atmosphere Part 29: Non electrical Equipment for Explosive Atmosphere - Structural Safety Type "c", Controlled Ignition Source Type "b", Liquid Immersion Type "k"

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