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What are the requirements for coal safety certification and mine safety certification?

Coal safety certification and mine safety certification are mandatory certifications for mining products and equipment. Coal safety certification is for equipment used in coal mines, while mine safety certification is for non coal mine equipment. Both are applied for, reviewed, and issued certificates by the National S……

What should be noted when applying for a domestic explosion-proof certificate for products?

What should be noted when applying for a domestic explosion-proof certificate for a product? Zhongnuo Testing has summarized years of experience in the explosion-proof certification industry and mainly shared the following points: (1) whether the product design is designed in accordance with the relevant standards of G……

How to apply for explosion-proof certificate for combined equipment?

Nowadays, there are many combination devices used in explosion-proof places to achieve more complex functions. Regarding the explosion-proof certification technical requirements for this type of equipment, Zhongnuo Testing has summarized years of industry experience and mainly has the following points: (1) The explosio……

What are the standards for testing and certification of explosion-proof electrical equipment?

Firstly, it is necessary to distinguish whether the product needs to be certified or whether the on-site location needs to undergo explosion-proof electrical testing. On site explosion-proof electrical testing is conducted in accordance with the AO3009-2007 standard for electrical equipment in use at least once every t……

What is the difference between intrinsic safety certification and coal safety certification for products?

Intrinsic safety certification, also known as intrinsic safety explosion-proof certification. In the explosion-proof industry, explosion-proof protection types include explosion-proof, intrinsic safety, increased safety, positive pressure, sealed, and so on. Intrinsic safety is just one type of explosion-proof type. Eq……

What does the explosion-proof symbol Ex db ib IIC T4 Gb mean?

For example, the explosion-proof mark Ex db ib IIC T4 Gb is a composite explosion-proof mark, Ex means explosion-proof, and explosion-proof equipment needs to be printed with the Ex logo; DBIB refers to the explosion-proof protection type adopted by the equipment, which means both explosion-proof and intrinsic safety; ……

What are the technical requirements for positive pressure explosion-proof certification of products?

Positive pressure explosion-proof refers to the process of introducing clean air or inert gas into the interior of equipment to create a pressure higher than that of the external flammable and explosive environment, isolating flammable and explosive mixtures from entering the equipment to achieve explosion-proof perfor……

What are the requirements for obtaining explosion-proof certificates for robot products?

More and more robot products are now being used in explosion-proof areas. Many customers have asked, how to obtain explosion-proof certification for robot products? What are the technical requirements? According to what standards? Do we need to send samples for testing when the product is so large? Robot products are o……

Can ODM/OEM companies apply for explosion-proof certification and explosion-proof 3C certification?

Many customers are asking whether their products are produced by OEM, ODM, or purchased, and whether they can apply for explosion-proof certification or explosion-proof 3C certification. Here, Zhongnuo Testing introduces the requirements and conditions for obtaining explosion-proof certification and explosion-proof 3C ……

Where are the certifications for explosion-proof ATEX certification and IECEx certification?

ATEX certification is a mandatory certification for explosion-proof products in the European Union, and is an explosion-proof directive of CE certification, applicable to EU countries and regions. IECEx is the International Electrotechnical Commission's certification system for explosion-proof electrical products, whic……