How to test DC resistance
The end of the measurement after the exit measure according to "exit" button, at this time if it is inductive load, DC resistance instrument will automatically start the winding discharge display tips are discharge, please wait ", and beep tone, discharge indicator disappears, could be dismantled measurement wiring, a winding test.
Start measurement: DC resistance instrument in the press the "measure" button after the start of the measured winding charge, and display the following interface display central display area will be the emergence of a charging progress bar, progress bar above the current value of the current, generally in the measurement of inductance load, the current to stabilize to a certain period of time, the current value of the zero to the rated value rise. Note: if the charging progress of long time stagnation in a current value may not rise, winding resistance value of the current measurement range over the selected current, the current did not reach the predetermined value, please exit the measurement according to "exit" button, and then choose to try a small current, when the current reaches the rated value and the end of charging, direct resistance to the data sampling instrument to calculate. The monitor indicates that it is being measured. Please wait for a while. After the calculation, the resistance value will be displayed on the display. After the data is stable, you can press the storage key to store or press the print key to print the data.
Measuring preparation: the first power line and the ground wire is connected to reliable DC resistance instrument, then the test line attached to the input and output terminals connected to the DC resistance instrument panel and its corresponding color, will test at the end of the line clamp to transformer winding ends to be measured, and the friction force on contact point ensure good contact. Wiring method is shown below
