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.
Sample Requirements for Explosion-Proof Certification Application:
The sample machines submitted by the company for inspection must match the approved drawings and be fully assembled. The number of units inspected should meet the requirements.
If special disassembly tools are required, they should be sent along with the shipment.
For potting-type electrical equipment, a set of both potted and unpotted products should be submitted.
Observing windows' transparent parts should be supplied with an additional 5, at least 3 pieces.
Translucent parts for lighting fixtures should be sent separately with at least 5 pieces, total of 8.
Rubber aging tests should provide 3 to 5 pieces of 35156 rubber blocks.
Two 15060mm diameter plastic sheets are required for the insulation resistance test of the plastic housing. If the dimensions permit, the test can be conducted directly on the plastic housing.
1-2 finished products are generally required.

ATEX Certification
ATEX is the European directive for "Equipment and protective systems intended for use in potentially explosive atmospheres," aimed at creating a single market within Europe, eliminating technical barriers to trade, and ensuring the free circulation of equipment intended for potentially explosive environments among member states. This directive covers both mining and non-mining equipment (including mechanical and electrical equipment), extending the potential explosive environment to include airborne dust and flammable gases, vapors, and mists, and stipulates basic health and safety requirements for equipment intended for potentially explosive atmospheres, as well as the conformity assessment procedures that must be adopted before equipment enters the European market. The current directive is 2014/34/EU.

Classification of Explosion-Proof Certification -- Shenzhen ZN Testing Technology Co., Ltd.
Blastproof certification is the process of verifying that equipment meets the requirements of explosion-proof standards, type testing, and routine tests applicable to it, and issuing the relevant certificates of conformity. Certificates can be issued for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products. Currently, international explosion-proof certifications include domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification.

Application Process for Explosion-Proof Certification at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product evaluation and initial quotation for the applied products. Evaluate the product based on the company's product specification, electrical schematic, and component list, determine the suitable type of explosion-proof certification for the product, and provide an initial quotation.
2. Offer samples for laboratory testing; the quantity of samples required varies depending on the product category.
3. Provide documentation list review
Application documents, including the applicant's basic information and product details
(2) Technical documents, including the submitted technical materials by the company, such as corporate standards or technical requirements, product drawings, and user manuals.
A. Company Standards/Technical Requirements: The company standards/technical requirements for products should be written in the prescribed format, including not only the performance requirements of the product but also relevant contents regarding explosion-proof aspects: such as basic parameters, explosion-proof markings, environmental conditions for use, explosion-proof performance requirements, relevant tests for explosion-proof performance, and markings related to explosion-proof.
B. Product Drawings - When applying for a防爆 certification for intrinsic safety electrical equipment, the applicant should provide assembly drawings, circuit diagrams, printed circuit board layouts, silk screen layouts, material lists for components and labels, etc. For non-intrinsic safety electrical equipment, the technical documents submitted for inspection should include drawings that reflect the sample's explosion-proof performance (including assembly drawings and component drawings). If the assembly drawing clearly indicates the product's explosion-proof parameters and structure, 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 diagram, installation, maintenance, order instructions, and clear warnings to the user regarding the importance of maintaining the explosion-proof performance of the product during installation and use.
D. Other Information: 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 Documents
Explosion-proof Certification Application Consultation Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.