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What do Class II and Class III explosion-proof certificates mean respectively? What are the requirements for processing?

Explosion proof electrical equipment is classified into Class I Explosion proof Certificate, Class II Explosion proof Certificate, and Class III Explosion proof Certificate according to different usage locations. The Class I explosion-proof certificate we refer to refers to the certification certificate used for underg……

What is the qualification certificate for installation, maintenance, and repair of explosion-proof electrical equipment?

Many institutions engaged in engineering construction, especially when it comes to installation and construction in explosive areas, require owners to provide relevant explosion-proof electrical installation and construction qualification certificates, which we call "Explosion proof Electrical Equipment Installati……

The difference between explosion-proof product certification and explosion-proof CCC certification

Since the announcement by the State Administration for Market Regulation in July 2019 on the implementation requirements for the transition from production licensing to mandatory product certification management for explosion-proof electrical and other products, it has been almost two years now. Many companies producin……

What are the requirements for obtaining the certification of explosion-proof electrical installation, repair, and maintenance capabilities?

The certification of explosion-proof electrical installation and maintenance capability is issued by several institutions and can be used for construction in various explosive hazardous areas. As a professional agency for explosion-proof electrical installation, maintenance and repair qualification certificates, Zhongn……

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

This also depends on whether it is for on-site equipment testing or product testing. If it is the testing of equipment used in hazardous areas, it is in accordance with AQ3009-2007 "Electrical Safety and Explosion Prevention Code for Hazardous Areas", and the testing cycle shall not exceed 3 years. If it is p……

In which fields can explosion-proof certification be widely applied

With the continuous improvement of people's awareness of safety production, explosion-proof certification technology has been widely applied in the production and processing of more and more industries such as chemical, petroleum and petrochemical, coatings, pharmaceuticals, food, and dangerous goods logistics. Why? Th……

The significance of explosion-proof certification and some knowledge of certification

In fact, explosion-proof certification is a necessary test that most electrical products must pass and obtain certification certificates. This is not only a guarantee and promotion of product quality, but also makes customers feel more at ease when using it. The country also has strict standards for explosion-proof cer……

What are the requirements for complete explosion-proof certification of modular products?

With the increasing emphasis on industrial safety, more and more ordinary industrial products are improving their explosion-proof products. Ordinary products that meet explosion-proof standards must undergo explosion-proof rectification and obtain explosion-proof certification. The combination of complete equipment is ……

What are the technical misconceptions to be aware of in explosion-proof certification

In explosion-proof certification technology, many people are unable to distinguish concepts such as explosion-proof, fireproof, explosive areas, explosive substances, and types of electrical equipment. 1、 Confusion of fire and explosion prevention concepts. 1. There are many types of explosions, which are basically div……

What should be noted in the design of explosion-proof enclosures?

According to the requirements of national standards GB3836 and GB12476, the explosion-proof enclosure of explosion-proof electrical equipment must meet the following four design requirements: 1. For explosion-proof enclosures, the enclosure of dust explosion-proof electrical equipment must meet two types of requirement……