Transformer low voltage short-circuit impedance tester, suitable for low voltage load impedance testing of power transformers (single-phase or three-phase) during factory, major maintenance, pre testing, and handover testing.

The principle is to conduct a short-circuit impedance (%) test on the power transformer on site, and compare it with the nameplate value or factory value to discover defects such as winding displacement and deformation caused by serious fault currents during transportation, installation, and operation after the factory test.

The transformer low voltage short-circuit impedance tester does not require an external voltage regulator. With a single wiring, it only needs to input parameters to automatically perform three-phase testing and calculate the impedance error percentage. The test results are very intuitive, making it a fast testing instrument for on-site testing of transformers for winding deformation.

1. The instrument adopts AC220V low-voltage power supply, which can automatically apply current to the AB, BC, and CA high-voltage windings of the transformer, synchronously collect data, and automatically calculate the impedance error percentage. The test results are very intuitive.

2. One time wiring can automatically complete three-phase testing without reversing the test wire.

3. The instrument can be used for single-phase testing or three-phase testing; It can be tested manually or automatically.

4. It has output current limiting function and is suitable for any impedance test sample.

5. The tested object can be measured without the need for an external voltage regulator.

6. It has the function of measuring zero sequence impedance.

7. It has the function of measuring inductance.

8. Large screen LCD display, Chinese menu, very simple operation, can be completed according to the prompts on the screen.

9. It has printing and storage functions; High testing accuracy, high level of automation, small size, light weight and other characteristics.

Voltage measurement range: 5-400V

Accuracy: 0.2 level

Current measurement range: 0.1-20A

Working power supply: AC220V ± 10%

Power frequency: 50 (± 1) Hz

Working temperature: -10 ℃~50 ℃

Environmental humidity: ≤ 85% RH

Host weight: 8Kg

Host volume: 405mm * 330mm * 172mm