GZD2040S transformer DC resistance tester - Image 1

GZD2040S transformer DC resistance tester

GZD2040S transformer DC resistance tester is suitable for measuring the DC resistance of power transformers, instrument transformers, motor windings, and other inductive tested objects. It can also be used for measuring the resistance of resistive test objects such as conductors and switch contacts. The tester integrates saturable magnetic circuit method, three- phase testing and demagnetization functions. One time wiring can complete all DC resistance testing. The tester has the characteristics of fast testing speed, stable data, small size, light weight, and easy portability.

Description
  1. Measure the DC resistance of various capacity power transformer, instrument transformers and motor windings.
  2. It can simultaneously measure the DC resistance of YN type windings AN, BN, CN and has a neutral point correction function. For the DC resistance of Y-shaped and △-shaped windings, three-phase automatic testing can be performed and the three-phase unbalance rate can be provided.
  3. The stable time of the constant current source is short;
  4. Wide range of resistance measurement, up to 200 Ω;
  5. It has a complete back electromotive force protection function and strong arc resistance ability;
  6. It has an audio discharge prompt, clear discharge indication, and reduces mis-operation;
  7. Adopting the series high-voltage winding magnetization method to shorten the detection time;
  8. It has resistance temperature conversion function, which is convenient for comparing with historical data;
  9. It has transformer demagnetization function, which can effectively reduce transformer residual magnetism;
  10. It can store 1000 sets of test data, and the test data can be transferred to a PC using a USB flash drive;
  11. Equipped with a high brightness LCD screen, the display remains clear and visible even in strong sunlight;
  12. High speed thermal printer can print test data;
  13. Support wireless online testing of Bluetooth 4.0 and above devices, and extract internal test data from the instrument;
  14. It has the function of protecting against accidental connection of AC380V power supply to the working power supply.

1. Range：
     Single phase：
     40A :250uΩ … 500mΩ
     20A : 500uΩ … 1Ω
     10A: 1mΩ … 2Ω
     5A: 2mΩ … 4Ω
     1A: 10mΩ … 20Ω
     100mA: 100mΩ … 200Ω
     Three-phase：
     20A + 20A: 500uΩ … 300mΩ
     10A + 10A: 1 … 800mΩ
     5A + 5A: 2mΩ … 1.6Ω
     1A + 1A: 10mΩ … 8Ω
     100mA + 100mA: 100mΩ … 80Ω
2. Accuracy：±(0.2%R +2dig)
3. Min resolution： 0.1μΩ
4. Power supply：85 to 264VAC，47 to 63Hz
5. Working environment： -10℃ to 50℃，H＜90%RH
6. Dimension：464×358×208mm  
7. Weight：12.5kg