Mining explosion-proof vacuum feed switch is suitable for underground coal mines and other environments containing explosive gases (methane mixtures) in the surrounding medium. In AC 50Hz, voltage to 1140V lines, it serves as the main switch, branch switch of the power supply system, or as a feed switch for mining explosion-proof mobile substations. It can also be used for infrequent starting of large capacity motors, with overload, short circuit, undervoltage Leakage protection and other functions. 1. This type of feed switch can be used as the main switch or branch switch of the power supply system, or as a feed switch for mining explosion-proof mobile substations, or as an infrequent starting function for large capacity motors; 2. Strong breaking ability and fast analysis speed. The ultimate breaking capacity reaches 12.5ka, and the breaking time is< 0.15s (from receiving the leakage action signal to the completion of breaking); 3. The electrical principle is simple, with complete protection and display functions
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 problemsBaijian 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