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.
If you're in need of explosion-proof certification for your products, turn to Shenzhen Zhongnuo Testing Technology Co., Ltd. We offer pre-certification design and renovation consultation, prototype renovation guidance, assistance with drawing and documentation preparation, and certification agency services. Feel free to send us a private message!

Why do you need to do explosion-proof design first for the explosion-proof certification application?
That's for sure.
The process of obtaining a防爆certification for products is to pass the relevant Testing projects of the explosion-proof standards and acquire an explosion-proof qualification certificate.
To ensure the product passes the explosion-proof standard testing projects, it is necessary to design the product according to the testing requirements, which means implementing explosion-proof design.
For explosion-proof requirements, refer to GB/T3836.1 and GB/T3836.2; for intrinsically safe designs, consult GB/T3836.1 and GB/T3836.4.
Designs should refer to GB/T3836.1 and GB/T3836.3, etc.
The above information is shared by Shenzhen ZN Testing Technology Co., Ltd.

Difference Between Explosion-Proof 3C Certification and Explosion-Proof Certificate of Conformity
As of October 1, 2009, a portion of explosion-proof electrical equipment was included in the CCC certification catalog. Products listed in the catalog must undergo explosion-proof 3C certification, which involves both "product testing + factory audit" models, requiring both type tests on the product and on-site factory audits. The explosion-proof certificate, however, is for products not listed in the explosion-proof 3C catalog, and the certification process includes technical image evaluation and product testing; upon passing the product test, an explosion-proof certificate can be issued. Please note that while products within the explosion-proof 3C catalog can only obtain an explosion-proof certificate, there is a risk of being penalized by market regulation authorities.
Requirements for obtaining the explosion-proof 3C certification
To obtain the explosion-proof 3C certification, it is necessary to target products listed in the explosion-proof 3C catalog, such as motors, fans, intercoms, etc. Additionally, the applicant must have a manufacturing facility or an OEM/ODM factory, as the explosion-proof 3C certification requires a "product testing + factory audit" approach.
If your product falls under the explosion-proof 3C certification list and you wish to learn more about the detailed information or application process for the explosion-proof 3C certification, please feel free to consult Shenzhen ZhongNuo Testing Technology Co., Ltd. for more detailed guidance and assistance.

Can equipment with plastic casings be used in explosion-proof certification?
Sure.
intrinsic safety, which refers to the inherent safety of the equipment, primarily achieved by limiting the energy in the circuit, without any specific requirements for plastic or metal casings.
However, there are requirements for the use of plastic casings.
GB/T3836-1-26.13 specifies explicitly that to prevent ignition hazards caused by static electricity charges,
Surface resistance on Class II electrical equipment should be limited to no more than 1GΩ.
explosion-proof certification application consulting service - Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.