When Electrical Equipment Operates in Explosive Hazardous Areas: Shanghai CHENZHU's Explosion-Proof Solutions

In industrial sectors such as petroleum, chemical engineering, metallurgy, and natural gas, work safety is the top priority. Locations where explosive hazardous substances exist impose clear explosion-proof requirements on the electrical equipment used.  

Industrial Sectors with Potential Explosion Risks

• Petroleum and Natural Gas Extraction

• Oil Refining and Chemical Enterprises

• Fuel/Gas Filling Stations

• Pharmaceutical Industry

• Gas Pipelines and Distribution Stations

• Analytical Laboratories

• Surface Coating Industry

• Printing Industry

• Electronic Component Manufacturing

• Underground Coal Mining Industry

• Sewage Treatment Plants

• Hospital Operating Rooms

• Sugar Industry

• Wood Processing Areas

• Grain Processing and Storage Areas

• Metal Surface Grinding (especially aluminum powder and particles)

In industrial automation control systems, intrinsically safe explosion-proof technology limits circuit energy below a safe level. This ensures that even under fault conditions, no electric sparks or high surface temperatures sufficient to ignite the explosive environment will be generated. As a result, this technology is widely applied in various potential explosive hazardous areas.

As a core associated safety instrument in intrinsically safe explosion-proof systems, a safety barrier serves as a connecting device between intrinsically safe instruments and non-intrinsically safe equipment. Installed between safe areas and hazardous areas, it incorporates internally designed current-limiting and voltage-limiting units to effectively restrict the energy supplied to on-site intrinsically safe circuits. This prevents the infiltration of hazardous energy into the hazardous site, ensuring on-site equipment operates under safe conditions.

Since its establishment in 2002, Shanghai CHENZHU has focused on the research and application of industrial safety protection instruments. In response to diverse explosion-proof safety needs in industrial automation, the company continuously develops a series of safety barrier products to meet the explosion-proof safety control requirements of different explosive environments.

Shanghai CHENZHU owns a national CNAS-accredited laboratory, equipped with professional and comprehensive testing equipment for safety protection electronic products. This laboratory provides solid support for design verification, component selection, new product certification, Production Part Approval Process (PPAP), supervision of supplier component quality, and reliability testing—ultimately delivering safe solutions with high adaptability and reliability to customers.

Laboratory Capabilities

• 6 Specialized Laboratories

• 100 Pieces of Instrumentation Equipment

• 110 Test Capabilities

Key Test Items

• Radiated and Conducted Immunity Tests

• Three-Comprehensive Test Chamber, Vibration Test Bench, Temperature Shock --Chamber

• Electrical Fast Transient/Burst Immunity Test

• Surge (Impact) Immunity Test

• Electrostatic Discharge Immunity Test

• Snow-Resistant Component Tester

• Vector Network Analyzer

• 220kA Surge Impact Testing Equipment

• Surge Impact Test Monitoring

• Long-Term Reliability Testing

In the field of industrial safety, professional and reliable safety protection products are not only a compliance requirement but also a crucial guarantee for protecting personnel lives and equipment. With technological advancement and the continuous upgrading of industry standards, explosion-proof safety technology will accelerate the consolidation of the foundation for industrial work safety.