Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering a one-stop explosion-proof technology consulting service.
Certification standards for explosion-proof equipment used in explosive gas environments:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.2-2021 Explosive Atmospheres, Part 2: Equipment protected by a flameproof "d" enclosure
GB/T 3836.3-2021 Explosive Atmospheres, Part 3: Equipment protected by intrinsic safety "i"
GB/T 3836.4-2021 Explosive Atmospheres Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosures "p"
GB/T 3836.6-2017 Explosion-proof Environment Part 6: Equipment Protected by Immersion Type “O”
GB/T 3836.7-2017 Explosive Atmospheres Part 7: Equipment protected by filling with sand of type “q”
GB/T 3836.8-2021 Explosive Atmospheres, Part 8: Equipment protected by "n" type protection
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type enclosures

Explosion-proof Certification Categories -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
Blast-proof certification is the process of verifying that equipment meets the requirements of explosion-proof standards, type testing, and routine tests, and issuing the corresponding qualification certificates. Certificates can be issued for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products. Currently, international explosion-proof certifications include domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification, among others.

Do we need a Coal Mine Safety Certificate if we already have an explosion-proof certification for the product?
The explosion-proof certificate and coal safety certificate are applicable to different locations.
Explosion-proof certificates generally refer to facilities used for various explosive gases and dusts, excluding underground coal mines.
Coal Mine Safety Certificate refers to the safety certification mark for equipment and products used underground in coal mines.
So, whether to apply for an explosion-proof certificate or a coal safety certificate depends on where the product is used. If it's only used in non-coal mine explosive gas and dust environments, an explosion-proof certificate is sufficient. However, if it's also used underground in coal mines, a coal safety certificate is mandatory, and the two are not interchangeable.
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What should you pay attention to when applying for an explosion-proof certification?
1. Is the product design in accordance with the GB/T3836 standards?
2. Can certification documents be provided?
(1) Technical Drawings: Includes circuit diagrams, assembly drawings, structural drawings, PCB layouts, numbering diagrams, BOM sheets, etc.
(2) Product Corporate Standards and Instructions
(3) Product Name, Model, Applicant Company
(4) Samples: Complete unit samples, batteries, uncapped circuit boards, non-metallic material surface blocks, etc.
(5) Additional Materials: Casting Sealing Process Documents, Copy of Ex Component Explosion Proof Certificate, Battery Testing Report, Shell Material Testing Report, Wireless Transmission Power Testing Report, etc.
Not all of the above information is required, and it should be determined based on the actual structure and explosion-proof type of the product.
3. Do you have engineers with explosion-proof technology expertise?
4. Are there specific requirements for the frequency of occurrence and explosion-proof grade?
5. Budget for costs
For more details, please feel free to contact Shenzhen Zhongnuo Testing Technology Co., Ltd. for further discussion!
Explosion Proof Certification Application Consulting Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.