Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal safety certification.
Which products can apply for the intrinsically safe explosion-proof certificate? What are the requirements?
"An intrinsically safe design is one of the many explosion-proof protection types, which limits electrical energy so that the equipment remains safe even in the event of a fault."
This type of explosion-proof protection generates insufficient energy to ignite the surrounding explosive environment.
Therefore, intrinsic safety imposes specific limitations on the current, voltage, capacitance, inductance, and other electrical parameters of electrical equipment.
Only suitable for low-power equipment. Additionally, there are specific requirements for the power supply method, plastic housing, and wireless transmission of intrinsically safe equipment.
To apply for ATEX certification for the product, the original circuit diagram and PCB diagram of the product must be provided.
ZhongNuo Inspection has dedicated engineers in intrinsic safety circuit and structural design, offering technical consulting services including explosion-proof circuit design, drafting, and rectification.
We have extensive design and certification experience for explosion-proof ratings A, B, and C.
If you need certification in this area, welcome to message Shenzhen Zhongnuo Testing Technology Co., Ltd. directly!

What is the difference between applying for ATEX certification and coal mine safety certification for products?
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.
Intrinsically safe is just one type of explosion-proof design. Equipment adopting this type of explosion-proof design is used in explosive areas.
Due to the limitations on its working voltage, current, capacitance, inductance, etc., even if sparks occur within the circuit, they are not sufficient to ignite the surrounding explosive environment, ensuring intrinsic safety.
The intrinsic safety certification is widely used in low-power, low-energy instruments, handheld terminal products, and other equipment.
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 coal mines, electrical equipment used underground must be equipped with protective measures to achieve explosion-proof performance.
Choose appropriate explosion-proof protection types such as intrinsically safe, flameproof, and 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 have explosion-proof capabilities but also meet performance tests for the special environment underground in coal mines.
ZheNuo Inspection has long been dedicated to explosion-proof certification and coal safety certification application consulting, well-versed in certification standards and product explosion-proof design, rectification, testing, certification, and factory audit processes and requirements, capable of helping enterprises quickly apply for explosion-proof and coal safety certifications.

The domestic coal safety certification system is quite stringent. It combines type testing with factory production system review.
To ensure that the applicant company is capable of ensuring the production and quality of the product. Even after obtaining the coal safety certification,
The company must also undergo annual supervision and evaluation by the Safety Standard Center.

What test items are required to apply for an explosion-proof certification?
Explosive-proof products must pass relevant tests according to explosive-proof standards to obtain an explosive-proof certificate.
Different explosion-proof types, catering to equipment used in various explosive environments, require different explosion-proof testing items.
Many clients also want to know what testing projects are required for explosion-proof products? What specific requirements are there for the explosion-proof design of the product?
Next, let's take a look at some common explosion-proof testing items.
For example, with intrinsic safety products, typical test items include appearance and structure inspection, spark ignition test, dielectric strength, battery and battery pack testing, temperature rise test, transient energy test, and more.
Explosion-proof products primarily undergo tests including heat and cold resistance, internal ignition without propagation of explosion, shell pressure resistance, IP testing, and temperature rise tests, etc.
Different testing items, tailored to various modules or components of the product, each test ensures that the product meets the explosion-proof standards and achieves the required explosion-proof performance.
If a company is designing explosion-proof products and is unaware of the explosion-proof standards requirements,
ZhongNuo Inspection can provide guidance services for explosion-proof circuit design and explosion-proof structural design, including explosion-proof standards, design key points, drawing guidance, and can also act as an agent for explosion-proof testing and certification services.
Need this service? Feel free to DM Shenzhen Zhongnuo Inspection Technology Co., Ltd. anytime!
Coal Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.