Special equipment reference ZSHC loop resistance tester power supply departments on-site maintenance and high voltage switch high voltage switch factory loop resistance test: DL / T845.4-2004 fixed gear function, DC 50A, 100A or 100A of two tranches fixed output current 200A The case directly measured loop resistance precision resistors, high vibration resistance, precision measurement pilot power nearly 30 years of manufacturing experience, only focus on one area, more professional, more secure. Introduction This instrument operating panel with ergonomic design, in line with operating practices, the use of high-frequency switching power supplies and digital circuit technology, suitable for switching control equipment loop resistance measurement. Test current national standard recommended by the DC 100A. In the case of DC 100A can be directly measured loop resistance, test results show that with a large-screen LCD LCD, and a data storage, print output, time settings and other functions, and another gear 50A for users to choose; custom test time, maximum set time 599S, much larger than the standard prescribed 60S; only the country can achieve 0.01μΩ resolution and very stable contact resistance tester, performance exceeded imports large current Microhmmeter. With the power, the electricity sector field high-voltage switchgear maintenance and high voltage switch factory loop resistance test requirements. Another name contact resistance tester, switch loop resistance tester, the contact loop resistance tester, contacts (circuit) resistance tester product features 1, high-current: precision loop resistance tester using the latest power supply technology to a long continuous output large current, pulsed power to overcome the drawbacks of the current moment, can effectively switch contact oxide film breakdown, get good test results; 2, high stability: In severe interference conditions, the LCD data can be stabilized in the last ± within a word range, the reading is stable and repeatable; 3, precision: with dual high-speed 16-bit Σ-ΔAD sampling, the latest digital signal processing technology, the highest resolution reached 0.01μΩ, is currently the only way to achieve 0.01μΩ resolution and very stable contact resistance tester, performance exceeded import large current Microhmmeter; 4. Intelligent: the use of imported high-performance CPU, the system automatically switches the measurement range according to the signal size to ensure the accuracy of the test product . Over-temperature protection circuit that automatically stops when the output current exceeds the set temperature instrument to ensure the safe use of the instrument; 5, high quality: The key parts are all imported components, effective elimination of environmental temperature on the measurement results by the ingenious design of the temperature compensation circuit the impact of the use of military connectors enhances vibration resistance; 6, powerful: the current in 50A, 100A freedom of choice, test time can be arbitrarily set within 5s ~ 599s, can not overcome the other similar instruments setting measurement time or continuous working time is too short defects, far more than other similar instrument performance; 7, friendly interface: by rotating the mouse input data, convenient instrument can be independently set the date, time, real-time measurement data is saved instantly print the results; 8, USB dump: through USB interface measurement data dump U disk, combined with the PC software for measurement data for further analysis and processing; 9, the instrument easy to use: small size, light weight, easy to carry. Optional equipment: minute scale adjustment and continuously adjustable