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 "Intrinsically Safe" certification the same as explosion-proof certification? What are the differences between them?
Blast-proof certification refers to a safety certification for equipment and products used in explosive hazardous areas.
Products must meet explosion-proof certification standards and require certain measures to be implemented, which we refer to as explosion-proof protection types.
Common explosion-proof protection types include intrinsic safety, flameproof, positive pressure, and increased safety, etc.
Clearly, intrinsic safety is just one type of explosion-proof protection.
Different explosion-proof protection types have varying design requirements for products.
intrinsic safety type involves limiting electrical energy, even in the event of a fault.
A type of explosion-proof protection that the generated energy is not sufficient to ignite the surrounding explosive environment.
Therefore, intrinsically safe types have limitations on the electrical equipment's current, voltage, capacitance, inductance, etc., and are generally suitable for low-power equipment.
Simultaneously, the intrinsically safe model also has clear requirements for the power supply method of the equipment, the material of the housing, and the wireless transmission.
As a long-standing third-party consulting agency specializing in explosion-proof certification.
ZhongNuo Inspection has dedicated engineers specializing in intrinsic safety circuit and structure design.
We offer technical consulting services for explosion-proof circuit design, drafting, and modifications. We have extensive experience in designing and obtaining certifications for intrinsically safe ia, ib, and ic explosion-proof classifications.
If you require certification in this area, feel free to send us a private message!

Application Process for Explosion-Proof Certificate at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product evaluation and provide an initial quote for the requested product. Evaluate the product using the company's product specification, electrical schematic, and component list, determining the appropriate type of explosion-proof certification suitable for the product and providing an initial quote.
2. Provide samples for testing at the lab; the quantity of samples required varies depending on the product category.
3. Provide document checklist review
Application documents, including the applicant's basic information and product details
(2) Technical documents, including submitted technical materials from the company such as corporate standards or technical requirements, product drawings, user manuals, etc.
A. Corporate Standards/Technical Requirements: The corporate standards/technical requirements for products should be written in the prescribed format, including not only performance requirements but also relevant content regarding explosion-proof aspects: 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-proof.
B. Product Drawings - When an enterprise applies for an explosion-proof certification for intrinsic safety electrical equipment, it should provide assembly drawings, circuit diagrams, printed circuit board diagrams, silk-screened drawings, material lists of components, and label drawings, etc. For non-intrinsic safety electrical equipment explosion-proof certification applications, 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, it may only be necessary to submit the assembly drawing for inspection.
C. User Manual - The user manual should include basic parameters, explosion-proof markings, product exterior diagrams, installation, maintenance instructions, ordering information, and explicit warnings to the user regarding the importance of ensuring the product's explosion-proof performance during installation and use.
D. Additional Information: For products with adhesive bonding or casting, provide the model names, performance descriptions, and relevant process documents for the adhesive and casting materials. For plastic casing products, provide the material type and corresponding performance documents.
4. Certificate issuance

Domestic explosion-proof certification models are divided into three cases -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Explosion-proof certification system
Applicable Products: Electrical and non-electrical equipment for places with explosive gases and dust, excluding non-mining applications (except for explosion-proof 3C product catalog)
Certification Model: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Intrinsically Safe 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: CCC Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, an annual audit is required
3. Coal Safety/Mine Safety Certification System
Applicable Products: Various electrical and non-electrical equipment for use in both coal and non-coal mines
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: Mine Product Safety Mark Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, an annual audit is required.

Market Access System for Explosion-Proof Products
1. Explosion-proof Certification System: Applies to all explosion-proof products, utilizing the "type testing" method.
2. CCC Certification: Applicable only to certain explosion-proof products (excluding measuring equipment and explosion-proof lighting), adopting the "Type Testing + Factory Inspection" method
3. Coal Mine Safety Mark (MA): Suitable for mining products, adopts the "type testing + factory inspection" method
explosion-proof certification application consulting service - Shenzhen ZhongNuo Testing Technology Co., Ltd.