Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
Products for Explosion Proof Certification:
The new implementation details are divided into 17 product units:
Explosion-proof motors: Center height ≤ 160mm, or rated power ≤ 15kW; Explosion-proof motors: 160mm < center height ≤ 280mm or 15kW < rated power ≤ 100kW; Explosion-proof motors: 280mm < center height ≤ 500mm or 100kW < rated power ≤ 500kW; Explosion-proof motors: Center height > 500mm or rated power > 500kW.
2. Explosion-proof electric pumps
3. Explosion-proof distribution equipment
4. Explosion-proof switches, control, and protection products
5. Explosion-proof starters
6. Explosion-proof transformers
7. Explosion-proof electric actuators, solenoid valves
8. Explosion-proof plug-in device
9. Explosion-proof surveillance products
10. Explosion-proof Communication and Signal Devices
11. Explosion-proof air conditioners, ventilation equipment
12. Explosion-proof electric heating products
13. Explosion-proof accessories, Ex components
14. Explosion-proof instrumentation and meters
15. Explosion-proof sensor
16. Safety Fencing
17. Explosion-proof instrument boxes

What's the difference between corrosion protection grade, protection grade, and explosion-proof certification grade?
Many corporate clients are often in the dark about the required corrosion resistance, protection class, and explosion-proof certification levels for their products.
Due to the one-character difference in names, both refer to a specific grade of the product, similar yet distinct.
What are the differences between them?
Corrosion prevention involves taking measures to protect metal items prone to rust, thereby extending their service life. Typically, methods such as physical, chemical, and electrochemical corrosion prevention are employed. Common categories include indoor F1, F2, and outdoor WF, WF1, and WF2, totaling five levels.
Protection rating, commonly known as IP rating, refers to the dust and water resistance level of the equipment, typically consisting of "IP" followed by two digits.
The explosion-proof grade generally refers to the certification level of the equipment's explosion-proof rating. Each electrical equipment applying for explosion-proof certification will have a corresponding explosion-proof marking, including the type of explosion-proof and the explosion-proof grade. The explosion-proof grade indicates the product's applicable explosion-proof area, gas/dust groups, temperature groups, and equipment protection level, etc.
Clearly, these three are different concepts in different fields.
For more information on this, feel free to send a private message to Shenzhen Zhongnuo Testing Technology Co., Ltd. anytime!

Classification of Explosion-Proof Certification -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
Blastproof certification is the process of determining if equipment meets the requirements of explosion-proof standards, type tests, and routine tests applicable to it, and issuing the relevant certificates of conformity. Certificates can be issued for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products. Currently, international explosion-proof certifications include domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification, among others.

What are the markings on explosion-proof electrical equipment?
A complete explosion-proof marking includes:
Ex Mark
Explosion-proof type
Gas/Dust Combination
Temperature Group
Equipment Protection Level
Ex db ib IIc T4 Gb
Ex tb ⅢC T130°C Db
For more information, please contact Shenzhen ZhongNuo Inspection Technology Co., Ltd.!
Explosion-proof Certification Application Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.