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.
Flammability Dust Environment Explosion Proof Certification Standard:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.4-2021 Explosive Atmospheres Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosure "p"
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type enclosures
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust-protection enclosures "t"

Which products can apply for the intrinsically safe explosion-proof certificate? What are the requirements?
Bonal is one of the many explosion-proof protection types, which limits electrical energy so that the equipment can still function even in the event of a fault.
A type of explosion-proof protection that the energy produced is not sufficient to ignite the surrounding explosive environment.
Therefore, intrinsic safety requirements limit the current, voltage, capacitance, inductance, etc., of electrical equipment, making it only suitable for low-power devices.
Simultaneously, there are explicit requirements for the power supply method of intrinsic safety equipment, plastic enclosures, and wireless transmitters.
The product application for intrinsic safety certification requires the submission of the product's schematic diagram, PCB layout, and other relevant documents.
ZhongNuo Inspection has dedicated engineers specializing in intrinsically safe circuit and structural design.
We offer technical consultation services for explosion-proof circuit design, illustration, and modification, with 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 message us directly!

Domestic explosion-proof certification models are divided into three scenarios -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
1. Explosion-proof certificate system
Applicable Products: Electrical and non-electrical equipment used in places with explosive gases and dust, excluding those for mining purposes (products not included in the Explosion-Proof 3C Catalog).
Certification Model: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Explosion-proof 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Mode: Combination of Type Testing and Factory Audit
Certification Certificate: CCC Certificate
Certificate Validity: 5 years
Whether Annual Audit: Audited Annually
3. Coal Safety/Mine Safety Certification System
Applicable Products: Various electrical and non-electrical equipment for use in both coal and non-coal mine underground environments
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: Mining Product Safety Mark Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, an annual audit is required.

IECEx Certification
IECEx is a certification system for explosion-proof electrical products promoted by the International Electrotechnical Commission (IEC), aimed at eliminating differences in equipment and services used in explosive environments, promoting international trade, while maintaining the level of equipment safety requirements. The current explosion-proof standard is IEC 60079. IECEx certification has become a pathway for products used in all hazardous areas to obtain international safety certification, and is now recognized in many countries worldwide (including Australia, New Zealand, Brazil, Canada, China, Japan, South Korea, Malaysia, Singapore, South Africa, the United States, etc.). Certificates issued by IECEx are automatically uploaded to the IECEx website, where manufacturers and end-users can find relevant documents.
explosion-proof certification application consulting service - Shenzhen Zhongnuo Testing Technology Co., Ltd.