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 happen to be in need of explosion-proof certification for your products, Shenzhen ZhongNuo Testing Technology Co., Ltd. is here to help. We offer early-stage explosion-proof design and整改 consultation, prototype整改 guidance, assistance with preparation of technical drawings and documents, and certification acquisition agency services. Feel free to send us a private message!

Why do you need to do explosion-proof design first for explosion-proof certification application?
That's for sure.
The product undergoes explosion-proof certification, which is the process of passing the relevant testing projects of explosion-proof standards to obtain an explosion-proof qualification certificate.
To ensure the product passes the explosion-proof standard testing projects, it is essential to design the product in accordance with the testing requirements, which is to say, to implement 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 must refer to GB/T3836.1 and GB/T3836.3, etc.
Above information is shared by Shenzhen ZhongNuo Inspection Technology Co., Ltd.!

Difference between Explosion-Proof 3C Certification and Explosion-Proof Compliance Certificate Certification
As of October 1, 2009, certain explosion-proof electrical equipment was included in the CCC certification catalog. Products listed in the catalog must undergo the explosion-proof 3C certification, which involves both "product testing + factory audit" models, including type tests for the products 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 assessment and product testing; upon passing the product testing, the explosion-proof certificate can be issued. Be advised, though, that while products within the explosion-proof 3C catalog can only obtain the explosion-proof certificate, there is a risk of being penalized by market supervision.
Requirements for obtaining the explosion-proof 3C certification
To obtain the explosion-proof 3C certification, it is necessary to address products listed in the explosion-proof 3C catalog, such as motors, fans, intercoms, etc. Additionally, the applicant must have a production factory 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 details or application process of 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 certifications?
Sure.
intrinsic safety, which primarily ensures the inherent safety of the equipment by limiting the energy in the circuit, without specifying the material of the housing, whether plastic or metal.
However, there are requirements for the use of plastic casings.
Section 26.13 of GB/T3836-1 clearly stipulates, to avoid the ignition hazard caused by static electricity charges,
Surface resistance on Class II electrical equipment should be limited to no more than 1 GΩ.
Explosion-proof Certification Application Consulting Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.