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Explosion proof electrical equipment mainly refers to electrical equipment used in hazardous areas, flammable and explosive areas. Commonly used explosion-proof electrical equipment is mainly divided into explosion-proof motors, explosion-proof transformers, explosion-proof switch equipment, and explosion-proof lighting fixtures. Explosion proof electrical equipment is mainly used in places containing flammable and explosive gases and dust, such as coal, petroleum, and chemical industries. Electrical equipment used in explosive hazardous environments should be structurally designed to prevent sparks, arcs, or hazardous temperatures from becoming ignition sources of explosive mixtures at the installation site during use Selection principle Selection principle of explosion-proof electrical equipment: (1) explosion-proof electrical equipment should be selected based on the level of explosive hazardous area and the category, level, and group of explosive hazardous substances. . (2) Only Class IA intrinsically safe equipment and other electrical equipment specially designed for Class 0 areas (special types) are allowed to be used in Class 0 areas. (3) The selection of explosion-proof electrical equipment for gas explosion hazardous areas is shown in the table below. (4) The selection of explosion-proof electrical equipment for dust explosion hazardous areas has not yet been finalized, and while ensuring safety, it is temporarily selected by each competent department. (5) The selection of explosion-proof electrical equipment for underground coal mines and explosives factories shall be determined by the Machinery Committee and the Ministry of Light Industry, Coal and other departments in accordance with this regulation, and based on the characteristics of explosives and fireworks, the selection of electrical equipment shall be determinedTable 1 Selection Table for Explosion Protection Types of Electrical Equipment Used in Gas Explosion Hazardous Areas Explosion Hazard Area Applicable Protection Types Electrical Equipment Types Symbols Zone 0 1. Intrinsically Safe (Class IA) ia 2. Other Electrical Equipment Especially Designed for Zone 0 (Special Types) s Zone 1 1 Protection types applicable to Zone 0 2. Explosion proof 3. Increased safety 4. Intrinsically safe (Class ib) 5. Oil filled 6. Positive pressure 7. Sand filled 8. Other electrical equipment specially designed for Zone 1 d e ib o p q s Zone 2 1. Protection types applicable to Zone 0 or Zone 1 2. Sparkless n Function of testing report:1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report 2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems100% inspection and testing process:1. Telephone communication and confirmation of requirements 2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:1. The testing industry is fully covered, meeting different testing needs 2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate 4. Free initial testing, with no testing fees charged 5. Self service order delivery for free on-site sampling 6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China
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