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Common explosion failure phenomena of explosion-proof electrical equipment

The explosion-proof shell of electrical equipment loses its explosion resistance or explosion-proof property (i.e. no explosion transmission), which is called explosion failure. The common explosion failure phenomena of explosion-proof electrical equipment include: 1. Severe deformation or cracking of the explosion-pro……

What are the requirements for installing explosion-proof instruments and meters in explosive hazardous areas?

Installation of explosion-proof electrical equipment: 1. Instruments, electrical equipment, and installation materials used in explosive hazardous areas such as junction boxes, distribution boxes, terminal boxes, etc. must have explosion-proof certificates issued by authorized institutions in the country. Before instal……

Do I need to indicate the explosion-proof certificate number on the explosion-proof nameplate?

Do I need to indicate the explosion-proof certificate number on the explosion-proof nameplate? Yes, the explosion-proof nameplate must include the explosion-proof certificate number! The explosion-proof nameplate is the ID card and simple instruction manual of explosion-proof electrical equipment, which includes the pr……

Classification of Explosive Hazardous Areas

Classification of Explosive Hazardous Areas for Explosion proof Certification

The main difference between increased safety "e" and non sparking "nA" explosion-proof motors

The increased safety type "e" motor and the spark free type "nA" motor are very similar in general structure, and even in terms of test items and inspection requirements, they are quite similar. Many people cannot accurately distinguish the requirements of these two explosion-proof types of motors. ……

Requirements for metal wall thickness around blind holes on explosion-proof enclosures

According to Article 11.6 of GB 3836.2-2010, for screw holes or double headed bolt holes that do not penetrate the explosion-proof shell wall, the remaining thickness of the explosion-proof shell wall should be at least one-third of the diameter of the bolt or double headed bolt, with a minimum of 3mm. Q： Does the 'rem……

What is the difference between explosion-proof and increased safety explosion-proof electrical equipment?

The explosion-proof principle of explosion-proof electrical equipment is designed according to GB 3836.1 and GB 3836.2 standards. Electrical components are installed inside a shell with explosion-proof performance, which can withstand explosive mixtures entering the interior of the shell through any joint surface or st……

Can explosion-proof products use plastic shells?

The commonly used explosion-proof shells are mostly made of metal materials. Can we use plastic to make explosion-proof shells? Explosion proof products can use plastic as the shell, but because the strength of plastic is not as high as that of metal, the plastic shell of the same product is generally thicker than the ……

Why do products need explosion-proof certification?

Explosion proof certification refers to the use of equipment to determine compliance with explosion-proof standards, requiring the issuance of relevant certificates of conformity for type testing, mainly targeting Ex equipment or Ex components. Explosion proof products mostly refer to explosion-proof electrical product……

How much does it cost to obtain ATEX explosion-proof certification?

How much does it cost to obtain ATEX explosion-proof certification? This issue is also a concern for many companies, as they need to consider the cost of the product. Next, Zhongnuo Testing will explain to you how ATEX explosion-proof certification is charged? According to EU regulations, ATEX certification fees mainly……