MS-520DC resistance tester

1. The instrument offers six selectable output current levels, with a maximum current of 20A and a minimum current of <5mA, suitable for measuring the DC resistance of various types of transformers and current transformers.
2. The instrument has a wide measurement range (from 100μΩ to 100KΩ).
3. Faster response speed; the on-load tap changer can be switched directly in the measurement state, and the instrument automatically refreshes the data.
4. Features an audible discharge alarm function with clear discharge indication.
5. Comprehensive protection functions reliably protect the instrument from back EMF impact, ensuring more reliable performance.
6. The instrument features a 7-inch color LCD screen with a clear and aesthetically pleasing interface, and can print results in real time.
7. The instrument can be set to Chinese or English operation interface, configurable according to customer needs.
8. Equipped with an RS485 communication interface for transmitting test data to the backend system.
9. Large storage capacity, capable of storing up to 500 test records.
10. Features a USB interface for transferring test data to a USB flash drive.
11. More comprehensive parameter settings, allowing for setting the transformer's test winding, tap position, test phase, sample temperature, conversion temperature, etc.
12. The instrument uses an industrial plastic casing, making it easy to carry and extending its service life.

1. Output current: Six test levels: 20A, 10A, 5A, 2A, 100mA, <5mA
2. Measurement range: 100μΩ-1Ω (20A), 500μΩ-2Ω (10A), 1mΩ-4Ω (5A), 5mΩ-10Ω (2A), 100mΩ-200Ω (100mA), 200Ω-100kΩ (<5mA)
3. Accuracy: 0.2% ± 2μΩ
4. Resolution: 0.1μΩ
5. Operating temperature: 0-40℃
6. Ambient humidity: ≤90%RH, non-condensing
7. Altitude: ≤1000 meters
8. Power supply: 220V±10%, 50HZ±1HZ