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How to obtain explosion-proof certification for explosion-proof switches? What is the basic process of explosion-proof certification?

How to obtain explosion-proof certification for explosion-proof switches? What is the basic process of explosion-proof certification? Explosion proof limit switches, travel switches, proximity switches, etc. are common explosion-proof electrical equipment in explosive locations, such as coal mining industry, paint or i……

What should be noted when applying for an explosion-proof certificate?

What should be noted when applying for an explosion-proof certificate? Many customers are confused when inquiring about obtaining an explosion-proof certificate and don't know where to start. Shenzhen Zhongnuo Testing Technology Co., Ltd. summarizes several precautions for enterprises to apply for explosion-proof certi……

The latest mandatory 3C certification standard for explosion-proof products

The standard for mandatory certification of explosion-proof electrical products was released on October 11, 2021 and implemented on May 1, 2022, The latest execution standards for explosion-proof 3C certification are as follows: GB/T 3836.1-2021 Explosive Environments Part 1: General Requirements for Equipment GB/T 383……

Specific requirements for plastic casings of explosion-proof electrical equipment - Shenzhen Zhongnuo Testing

The limit value for the surface resistance of non-metallic shells of explosion-proof equipment is required. In hazardous areas with explosive dust, gases, and vapors, such as coal powder, flour, aluminum powder, hydrogen gas, etc., static electricity may cause fire or explosion, posing a high risk. Therefore, explosive……

What is the relationship between explosion-proof certification and intrinsic safety certification?

Intrinsic safety is a type of explosion-proof protection, which includes not only intrinsic safety but also explosion-proof, increased safety, and sealing. The intrinsic safety certification can only say that this device adopts an intrinsic safety explosion-proof protection type and has obtained explosion-proof certifi……

What is the process for obtaining explosion-proof 3C certification? Shenzhen Zhongnuo Testing

Explosion proof 3C certification CCC certification is also known as China Compulsory Certification, abbreviated as CCC. It is a product qualification assessment system implemented in China in accordance with laws and regulations to protect the personal safety of consumers and national security, strengthen product quali……

How to apply for the qualification certificate for installation, maintenance and repair of explosion-proof electrical equipment?

The qualification certificate for installation, maintenance, and repair of explosion-proof electrical equipment is one of the essential qualifications for explosion-proof construction and renovation enterprises. Requirements and materials for obtaining the qualification certificate for installation, maintenance, and re……

What are the requirements for applying for explosion-proof certificate and explosion-proof CCC certification for products? Shenzhen Zhongnuo Testing

This should be targeted at products listed in the explosion-proof 3C catalog, such as motors, fans, walkie talkies, etc., all of which belong to the explosion-proof 3C catalog. Those who have previously obtained an explosion-proof qualification certificate need to be converted to an explosion-proof 3C certification cer……

How should explosion-proof electrical equipment be selected- Shenzhen Zhongnuo Testing

The key is to see how this explosion-proof area is partitioned. Explosive gas environments are divided into Zone 0, Zone 1, and Zone 2. Combustible dust areas are divided into zones 20, 21, and 22. The selection of equipment depends on its protection level. The equipment protection levels corresponding to Zone 0, Zone ……

How to understand the difference between explosion-proof and intrinsically safe explosion-proof?

Intrinsic safety and explosion-proof are two different types of explosion-proof protection. Generally, explosion-proof protection is adopted by using an explosion-proof shell, which must have sufficient thickness and strength. Even if an explosion occurs inside the equipment, the width, gap, and roughness of the explos……