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 need explosion-proof certification for your products, Shenzhen ZhongNuo Testing Technology Co., Ltd. is here to assist. We offer pre-certification explosion-proof design and consulting, prototype modification guidance, assistance with drawing and documentation preparation, and certification agency services. Feel free to send us a private message!

Why is it necessary to do explosion-proof design before applying for an explosion-proof certification?
That's a given.
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 necessary to design the product according to the testing requirements, which is to implement explosion-proof design.
For explosion-proof requirements, refer to GB/T3836.1 and GB/T3836.2, while for intrinsically safe designs, consult GB/T3836.1 and GB/T3836.4.
Designs for explosion-proof should refer to GB/T3836.1 and GB/T3836.3, etc.
Above information is shared by Shenzhen ZhongNuo 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, including both type tests for the products and on-site factory audits. The explosion-proof certificate, however, is for products not included in the explosion-proof 3C catalog, and the certification process is based on technical image evaluation and product testing; upon passing the product testing, the explosion-proof certificate can be issued. Please note that although 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 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 catalog and you wish to learn more about the details or process of obtaining 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 equipment by limiting energy in the circuit, without specifying requirements for plastic or metal enclosures.
However, there are requirements for the use of plastic casings.
GB/T3836-1-26.13 explicitly 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 Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.