The Three-Phase DC Resistance Tester is a mandatory test item for semi-finished and finished transformer products during manufacturing, factory acceptance tests, installation, commissioning tests, and preventive tests in power departments. It can effectively detect manufacturing defects such as poor material selection, welding issues, loose connections, missing strands, broken wires in transformer coils, as well as hidden dangers after operation.
Features
1. Only one connection is needed to measure all DC resistance data of high and low voltage windings;
2. Three-phase simultaneous measurement combined with magnetizing method for faster speed and significantly reduced residual magnetism hazards;
3. Displays and prints all test data of high, medium, and low voltage windings of the transformer, automatically calculates the three-phase unbalance rate, and can also print resistance values converted to rated temperature;
4. Has complete back-EMF protection function;
5. Has automatic discharge and discharge indication functions, reducing misoperation and ensuring equipment and personnel safety;
6. The instrument can permanently store 500 sets of test data, and can also use a USB drive to store data;
7. The instrument uses a 5.7-inch large LCD display and can print test results at any time;
8. The instrument has features such as wide operating temperature range, high precision, shock resistance, anti-interference, and portability.