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.
Is applying for an explosion-proof certification the same as obtaining an explosion-proof qualification certificate?
Many clients inquire during consultations about the difference between applying for explosion-proof certification and an explosion-proof qualification certificate.
explosion-proof certification and explosion-proof approval certificate are two different concepts.
The product has passed the explosion-proof certification, resulting in the issuance of the explosion-proof certificate. The explosion-proof certification is the process, and the explosion-proof certificate is the outcome.
So the customer mentioned the product needs to be certified for explosion-proof or obtain an explosion-proof certificate.
The product must pass the explosion-proof standard tests and meet the standard requirements to obtain an explosion-proof certification.
Explosion-proof certifications can be categorized according to different explosion protection types, including intrinsic safety, flameproof, positive pressure, and encased types.
ZhongNuo Inspection has a dedicated team of explosion-proof engineers who can provide initial design services for explosion-proof circuits and structures.
Assist companies in preparing the necessary drawings, documentation, and manuals, including enterprise standards, for explosion-proof certifications, helping them obtain the explosion-proof qualification certificate.
If you need certifications in this area, feel free to message us privately!

The process of applying for an explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product assessment and initial quotation for the applied products. Evaluate the product based on the company's product specification, electrical schematic diagram, and component list. Determine the suitable type of explosion-proof certification for the product and provide an initial quotation.
2. Provide samples for testing at the lab; the quantity of samples required varies depending on the product category.
3. Provide documentation list review
Application Documents, including Applicant's Information and Product Information
(2) Technical documents, including submitted by the company for review, such as corporate standards or technical requirements, product drawings, and user manuals.
A. Corporate Standards/Technical Requirements: The corporate standards/technical requirements for products should be written in accordance with the prescribed format. The content should include not only performance requirements of the product but also relevant aspects of explosion-proofness: such as basic parameters, explosion-proof markings, operating environmental conditions, explosion-proof performance requirements, relevant tests for explosion-proof performance, and markings related to explosion-proofness.
B. Product Drawings: When applying for a explosion-proof certification for intrinsically safe electrical equipment, the applicant should provide assembly drawings, circuit diagrams, printed circuit board drawings, silk-screening drawings, material lists of components, and label drawings, etc. For non-intrinsically safe electrical equipment, the technical documents submitted for inspection should include drawings that reflect the explosion-proof performance of the sample (including assembly drawings and component drawings). If the assembly drawing can clearly indicate the explosion-proof parameters and structure of the product, only the assembly drawing needs to be submitted for inspection.
C. Instruction Manual - The instruction manual should include basic parameters, explosion-proof markings, product outline drawings, installation, maintenance, order instructions, and clear warnings to the user regarding the importance of ensuring the product's explosion-proof performance during installation and use.
D. Other Documents: For products with adhesive bonding or casting, provide the model names, performance descriptions, and relevant process documents for the adhesives and casting agents. For plastic shell products, provide the material of the plastic and corresponding performance documents.
4. Issuance of Certificates

Domestic Explosion-Proof Certification
Domestic explosion-proof certification is a compliance inspection conducted on explosion-proof products used in explosive environments (including electrical and non-electrical products).
Issue explosion-proof certificates for products that meet the GB/T3836 standard.
The domestic explosion-proof certification standards are essentially equivalent to the international IEC 60079 standard system.

Explosion-proof Certification Categories -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
Explosion-proof certification is the process of verifying that equipment meets the requirements of explosion-proof standards, type testing, and routine tests, and issuing the relevant qualification certificates.
Certificates are available for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products.
Currently, explosion-proof certifications worldwide can be categorized into domestic explosion-proof certifications, ATEX certifications, IECEx certifications, and North American explosion-proof certifications.
Explosion-proof Certification Application Consulting Services - Shenzhen ZN Testing Technology Co., Ltd.