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 one-stop explosion-proof technology consulting services.
What are common misconceptions about explosion-proof certification?
The explosion-proof rating isn't the higher, the better.
The explosion-proof rating is related to product structure and installation environment. Choose the appropriate one. Of course, as long as the product structure meets the requirements, the higher the explosion-proof rating, the wider the applicable range.
2. Explosion-proof rating is not equal to protection rating.
The protection grade, commonly referred to as the IP rating, is different from the explosion-proof grade.
3. The lower the temperature combination, the safer it is, rather than the higher the better.
Temperature combinations T6 (85°C), T5 (100°C), T4 (135°C), T3 (200°C), T2 (300°C), T1 (450°C) represent the high surface temperatures achieved by the equipment under adverse conditions. In explosive hazardous areas, of course, the lower the high surface temperature of the equipment, the safer it is.
4. Gas explosion-proof certificates are not to be used in dust areas, and conversely, dust explosion-proof certificates cannot be used in gas areas.
5. A防爆 certification is sufficient for use in coal mine underground.
Wrong. Electrical equipment used in coal mine underground requires coal safety certification, and the frequent agency is the Safety Standardization Center.
Explosion-proof certification is only applicable to locations where explosive gases and dust are used beneath non-coal mines. If the product is listed in the explosion-proof CCC catalog, it is required to obtain the explosion-proof 3C certification.

What explosion-proof certifications are required for explosion-proof products? What consulting agencies are available for explosion-proof certification applications?
Currently, the certification models for explosion-proof products entering the Chinese market mainly consist of three types.
1. Obtain explosion-proof certification for equipment used in environments with explosive gases and combustible dust in non-coal mines. Simply conduct product testing; upon passing, the certificate will be issued.
2. Conduct explosion-proof 3C certification; for products listed in the explosion-proof 3C directory, product testing and factory inspections are required.
3. Coal Mine Safety Certification, applicable to explosion-proof equipment used underground in coal mines, featuring a certification process that includes product testing and factory audit.
ZhongNuo Inspection offers explosion-proof certification application consulting services. We provide a one-stop explosion-proof and coal safety certification consulting service, including product explosion-proof design, rectification, drawing evaluation, certification acquisition, and factory audit. We are familiar with certification standards and procedures, have extensive case studies and experience. Feel free to message us!

Flammability Dust Environment Explosion Proof Certification Standard:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
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 enclosure "p"
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type encapsulation
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust ignition-proof enclosures "t"

Explosion-proof certifications can mainly be categorized into the following types:
1. Explosion-proof 3C Certification: This is a mandatory product certification for certain types of explosion-proof electrical equipment. Starting from October 1, 2009, the system has included these explosion-proof electrical equipment in the CCC certification catalog. Products listed in the catalog require an explosion-proof 3C certification, which involves a "product testing + factory audit" approach.
2. Explosion-proof Certification: This is a certification for products not listed in the Explosion-proof 3C Catalog. The certification process involves product testing, and a product that passes the test can be issued an explosion-proof certificate. However, it's important to note that while products outside the Explosion-proof 3C Catalog can only obtain the explosion-proof certificate, there is a risk of being penalized by market regulation.
Additionally,防爆产品 can be further categorized based on their application sites into mining and non-mining explosion-proof products:
3. Coal Mine Explosion-Proof Products: Coal mine explosion-proof products require Coal Safety Certification, which includes explosion-proof performance tests and performance standard tests, as well as factory inspections and annual reviews.
4. Non-mining explosion-proof products: Categorized according to the above explosion-proof 3C certification and explosion-proof qualification certificate certification.
5. Explosion-proof products for export require different standards of explosion-proof certification based on the export destination, such as ATEX certification and IECEx certification, etc.
Shenzhen ZhongNuo Inspection has been specializing in explosion-proof product testing and certification for many years, well-versed in both domestic and international explosion-proof standards. We have a team of experienced explosion-proof technicians who can provide explosion-proof circuit design and drawings, offer tailored explosion-proof solutions, and help businesses swiftly obtain explosion-proof certification. For more details, feel free to send us a private message anytime!
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.