Jinan 21 Explosion-proof Certification Execution Standard

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.
Explosion-proof certification is a product certification designed for use in environments where flammable and explosive gases and dust are present.
What measures are taken to achieve explosion-proof capabilities in the product? This involves various explosion-proof protection types. Common ones include intrinsic safety, flameproof, positive pressure, increased safety, cast-in-place, and dust ignition-proof housing protection.
In terms of explosion-proof protection principles, the basic approaches are to limit spark energy and isolate flammable and explosive substances.
The type of explosion-proof design for the product depends on its electrical parameters, structure, operating principle, and installation method, etc.
If you happen to need explosion-proof certification for your products, feel free to consult Shenzhen ZhongNuo Testing Technology Co., Ltd. at any time.
Shenzhen ZhongNuo Testing Technology Co., Ltd. offers design, testing, and certification guidance for explosion-proof products, along with agency certification services. We specialize in intrinsically safe circuit design and products, providing consulting services such as intrinsically safe design, circuit assessment, structural design, and drawing guidance. Our successful cases include various sensors, instruments, automation equipment, and robotic products.
Welcome to contact us directly for detailed communication at any time!

The process for applying for an explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product assessment and provide an initial quote for the applied product. Evaluate the product using the company's product specification, electrical schematics, and component list, determine the suitable type of explosion-proof certification for the product, and offer an initial quote.
2. Offer samples for laboratory testing; the quantity of samples required varies depending on the product category.
3. Provide document list review
Application documents, including applicant's information.
(2) Technical documents, including the company's submitted technical materials 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 performance requirements of the product but also relevant content regarding explosion-proof aspects: such as basic parameters, explosion-proof markings, environmental conditions of 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ex-proof certification for intrinsically safe electrical equipment, the applicant should provide assembly drawings, circuit diagrams, printed circuit board diagrams, silk-screening diagrams, component material lists, and label drawings, among others. For non-intrinsically safe 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 overall drawing can clearly indicate the product's explosion-proof parameters and structure, only the overall drawing needs to be submitted for inspection.
C. User Manual - The user manual should include basic parameters, explosion-proof markings, product exterior diagrams, installation, maintenance instructions, order requirements, and clear notices to users regarding the precautions to ensure the product's explosion-proof performance during installation and use.
D. Additional Information: For products with adhesive bonding or casting, provide the型号 and name of the adhesive and casting agent, along with performance descriptions and relevant process documents. For plastic shell products, provide the material of the plastic and corresponding performance files.
4. Certificate of Origin

What does the explosion-proof marking Exdb eb llB T6 Gb mean?
A complete explosion-proof marking includes:
Ex Mark
Explosion-proof type
Gas/Dust Combination
Temperature Group
Equipment Protection Level
Ex db ib IIc T4 Gb
Ex tb ⅢC T130°C Db
Ex db eb llB T6 Gb
Ex indicates explosion-proof
DB EB indicates that the equipment is of an explosion-proof type with flameproof and increased safety design.
llB indicates the equipment is suitable for explosive gas environments of llB and llA types.
T6 indicates the equipment with a high surface temperature not exceeding 85°C.
Gb is the protection level of the equipment, suitable for Zones 1 and 2.

In the explosion-proof electrical construction industry, the explosion-proof electrical equipment installation qualification certificate is a necessity for numerous corporate clients engaged in explosion-proof installation and construction projects.
This certificate can be processed through Shenzhen ZhongNuo Testing Technology Co., Ltd.
The process is simple: just provide the company name and at least 3 employee lists, attend a 2-day online training and exam, and you'll receive the certificate upon passing the exam.
Currently, there are several institutions in China that can issue this explosion-proof installation qualification certificate. The application process, costs, and requirements for the explosion-proof installation qualification certificates issued by different institutions vary. For more details, please consult Shenzhen ZhongNuo Testing Technology Co., Ltd.
explosion-proof certification application consulting service - Shenzhen ZhongNuo Inspection & Technology Co., Ltd.