Power Undertaking Level 3/DC Resistance Tester is an indispensable test item for transformers after handover, overhaul, and tap changer changes. In normal circumstances, using traditional methods (bridge method and voltage drop method) to measure the DC resistance of transformer windings and high-power inductive equipment is a time-consuming and labor-intensive task. To change this situation, shorten measurement time, and reduce the workload of test personnel, our company has developed the 40A DC Resistance Rapid Tester (hereinafter referred to as the DC Resistance Tester). It adopts brand-new power supply technology and features stable performance, rapid measurement, compact size, convenient use, high measurement accuracy, and good data repeatability. It is an ideal device for measuring the DC resistance of transformer windings and high-power inductive equipment.



This product complies with DL/T845.3-2004 and the national standards GB6587 "General Outline of Environmental Testing for Electronic Measuring Instruments" and GB6593 "Quality Inspection Rules for Electronic Instruments".



Product Features:



1. Can stably output 40A DC current, with fast and stable testing



2. Large-capacity CPU can store 255 sets of measurement results



3. Large-screen LCD display, full Chinese menu-guided operation, intuitive and simple



4. This DC resistance rapid tester has automatic discharge and discharge indication functions, reducing misoperation and ensuring the safety of equipment and personnel



5. Large output current but light weight, vertical chassis, convenient for on-site use



6. Comes with a built-in panel-mounted micro printer, which can print measurement results in Chinese



7. Power Undertaking Level 3/DC Resistance Tester, stored results can be viewed and printed



Instrument Technical Specifications:



1. Output four gear currents: 40A, 20A, 10A, 5A



2. Resolution: 0.1μΩ



3. Range: 20mΩ - 4Ω (5A gear); 10mΩ - 2Ω (10A gear);



0.2mΩ - 1Ω (20A gear); 0.1mΩ - 0.5Ω (40A gear);



4. Accuracy: 0.2%



5. Ambient temperature: 0~40℃



6. Ambient humidity: <90%RH



7. Working power supply: AC220V±10%, (50±1)HZ



8. Dimensions: 400×200×350mm



9. Weight: 13kg



Instrument Daily Maintenance:



1. Within three months, if the instrument fails to meet technical requirements due to its own reasons, it can be replaced unconditionally.



2. Free repair within one year, and lifelong maintenance and technical services.



3. If the instrument has quality problems, we will propose a maintenance plan on the same day and handle it on-site promptly. Alternative instruments can also be provided to meet user needs.



4. Free on-site technical support and training on instrument usage knowledge.



5. If the instrument malfunctions, please contact us promptly so that we can provide you with services.