• The whole machine is controlled by a high-speed microcontroller, featuring a high degree of automation and easy operation.

  • The instrument adopts the latest power supply technology, with multiple current ranges and a wide measurement range, suitable for DC resistance measurement of large and medium-sized transformers.

  • Comprehensive protection functions reliably safeguard the instrument against back electromotive force impacts, ensuring more reliable performance.

  • Equipped with audible discharge alarm, clear discharge indication, reducing operational errors.

  • Fast response speed, allowing direct switching of on-load tap changers during measurement, with automatic data refresh.

  • Intelligent power management technology keeps the instrument operating at minimal power at all times, effectively saving energy and reducing heat generation.

  • 320X240 dot matrix ultra-small pixel 65K true color LCD,

  • The instrument comes with a built-in calendar clock and power-off storage, capable of storing 1000 sets of test data for convenient review at any time.

  • The instrument is equipped with RS232 and USB interfaces, enabling communication with computers and U-disk storage.




Main Technical Parameters

  • Output current: 100A, 50A, 20A, 10A, 5A

  • Minimum resolution: 0.1μΩ

  • Measurement range:

    • 100A: 50μΩ～100mΩ

    • 50A: 100μΩ～200mΩ

    • 20A: 200μΩ～800mΩ

    • 10A: 500μΩ～2Ω

    • 5A: 1mΩ～4Ω



  • Accuracy: ±(0.2%+2 digits)

  • Operating temperature: 0～40

  • Operating humidity: <90%RH, non-condensing

  • Dimensions: Length 325mm X Width 240mm X Height 275mm

  • Weight: 15KG (excluding test leads)