Power transformer winding resistance tester 50A dc resistance meter it is a mandatory test item for semi-finished products and finished products in transformer manufacturing, installation, handover test and preventive test of the power sector, which can effectively find manufacturing defects and hidden dangers after operation such as material selection, welding, loose connection parts, lack of strands, and broken wires of transformer coils.

1. Output current: 50A,20A, 10A, 5A, 2A, 100mA, <5mA (7 levels for testing).
2. Range: 3. Accuracy: ±(0.2%+2word)
4. Resolution: 0.1μΩ
5. Working temperature: -10～40℃
6. Ambient humidity: ≤90% RH, no condensation
7. Altitude: ≤1000meters
8.Working power supply: AC220V ± 10%, 50HZ ± 1HZ
9. Dimensions: 428mm * 350mm * 230mm
10. Weight: 10.9kg

1. The tester has 7 levels of output current (maximum: 50A; minimum: <5mA), which is suitable for DC resistance measurement of a variety of transformers and mutual inductors.
2. The measurement range of the tester is 40μΩ to 100KΩ.
3. The tester has a higher response speed. The on-load tap switch can be directly enabled during measurement, and the tester will automatically refresh data.
4. The tester has the function of sound discharge alarm and clear discharge indication, to reduce misoperation.
5. The tester has complete protection functions for reliable protection against the impact of back EMF, thus achieving more reliable performance.
6. The tester is equipped with a 7-inch color LCD screen, which can display data in a clear and attractive manner. In addition, output results can be printed in a real-time manner.
7. The operation interface (Chinese and English) of the tester can be configured as required by customers.
8. The tester has a RS485 communication interface to transmit test data to the background.
9. The tester has a large storage capacity for 500 test records at most.
10. The tester has USB interface for transfer of test data into USB flash disks.
11. More complete parameters can be set, including the test winding, tap position, test phase, test sample temperature, conversion temperature and others of the transformer.
12. The tester has an industrial plastic case, which is easy to carry and helpful to prolong the service life.

During the manufacturing of inductive coils of transformers, mutual inductors, reactors, and electromagnetic operating mechanisms, DC resistance measurement is required in factory tests, installation and handover tests, and preventive tests of the power sector for semi-finished and finished products.

Winding Resistance Tester can effectively identify manufacturing defects (e.g. loosening, strand missing, broken wires in material selection, welding and connection for inductive coils) and hazards in operation.