Shenzhen ZhongNuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal mine safety certification application consulting services, offering a one-stop explosion-proof technology consulting service.
What is the relationship between the explosion-proof certificate and the explosion-proof CCC certification?
The explosion-proof certificate and explosion-proof 3C certification are for different types of explosion-proof products.
Explosion-proof 3C Certification is applicable to products listed in the Explosion-proof 3C Catalogue. There is a dedicated product catalog for Explosion-proof 3C.
Products listed in the catalog undergo explosion-proof 3C certification, adopting a "Product Testing + Factory Audit" model.
Both product type tests and factory on-site evaluations must be conducted.
Certificate of explosion-proof suitability for products outside the explosion-proof 3C catalog.
The certification model is product testing; once the testing is passed, a regular explosion-proof certification can be issued.
Of course, products outside the explosion-proof 3C catalog can also apply for explosion-proof certificates alone, but there is a risk of being penalized by market supervision.
This is for the customer to consider.
For more details, please contact Shenzhen ZhongNuo Testing Technology Co., Ltd. for further discussion!

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 it.
For potting-type electrical equipment, a set of products with and without potting should be sent separately.
The transparent pieces for the observation window should be supplied with an additional 5, at least 3 pieces.
Transparencies for lighting fixtures should be supplied separately with at least 5 pieces, and an additional 8.
Rubber aging tests should provide 3 to 5 pieces of 35156 rubber blocks.
Two plastic sheets with a diameter of 150-60mm are required for the insulation resistance test of the plastic shell. If the size permits, the test can be directly conducted on the plastic shell.
Generally, 1-2 finished products are required.

What's the difference between obtaining a safety certification for products and coal safety certification?
intrinsic safety certification, also known as intrinsic safety explosion-proof certification.
In the explosion-proof industry, there are various types of explosion-proof protection, including隔爆型、本安型、增安型、正压型、浇封型, and so on.
intrinsic safety is just one type of explosion-proof design. Equipment utilizing this explosion-proof design is used in explosive areas.
Due to limitations on its working voltage, current, capacitance, inductance, etc.
Even if sparks are generated within the circuit, they are insufficient to ignite the surrounding explosive environment, making it intrinsically safe.
The ATEX certification is widely applied to low-power, low-energy instruments, handheld terminal products, and similar devices.
Coal Mine Safety Certification is a mandatory safety certification for equipment used underground in coal mines.
Due to the presence of explosive substances like methane in underground coal mines, electrical equipment used in such mines must be equipped with protective measures to ensure explosion-proof performance.
Select the appropriate explosion-proof protection type, such as intrinsic safety, flameproof, or encapsulation, based on product structure, electrical parameters, installation method, and usage area.
It's worth noting that electrical equipment applying for the Coal Mine Safety Certification must not only possess explosion-proof capabilities but also meet performance tests specific to the underground coal mine environment.
ZheNuo Inspection has long been focused on explosion-proof certification and coal safety certification.
Familiar with certification standards, as well as explosion-proof product design, rectification, testing, certification, and factory audit processes and requirements.
Helps businesses quickly obtain explosion-proof certification and coal safety certification.

North American Intrinsically Safe Certification
The North American Intrinsic Safety Certification System (hereinafter referred to as NEC System [NEC: National Electrical Code]) differs significantly from our country's certification system under the GB standards (hereinafter referred to as GB System) in aspects such as classification of explosive materials, division of hazardous areas, intrinsic safety protection methods, and installation wiring. Currently, North American intrinsic safety certification is divided into two major systems: Division and Zone. The Division System uses the intrinsic safety marks native to the United States, while the Zone System adheres to intrinsic safety standards consistent with the IEC System.
Explosion Proof Certification Application Consulting Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.