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The difference between explosive discs and flameless explosive devices

During the installation and construction of explosion-proof devices, the flame, shock wave, high-temperature gas, and combustible debris inside the chamber will be released into the designated area through the opening of the explosion-proof device, in order to reduce the explosion pressure in the area; Explosion relief……

Can coal safety certification be converted to explosion-proof 3C certification?

According to the announcement of the State Administration for Market Regulation, starting from October 1, 2020, some explosion-proof electrical equipment will be included in the national mandatory product certification catalog, namely CCC certification. Products belonging to the explosion-proof 3C certification catalog……

The Importance of Anti explosion Doors in Explosive Hazardous Areas

The construction and installation of blast resistant doors are aimed at resisting the accidental combustion and explosion of explosive hazardous substances outside the door, ensuring the safety of personnel and the integrity of equipment behind the door, and avoiding the harm of explosion shock waves; Effectively preve……

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……