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KDD400 Double Clamp Ground Resistance Tester
KDD400 Double Clamp Ground Resistance Tester

KDD400 Double Clamp Ground Resistance Tester

Applications:

Widely used in telecommunications, power, meteorology, computer rooms, oilfields, power distribution lines, tower transmission lines, gas stations, factory grounding grids and lightning rods for accurate testing, featuring high precision, speed and reliability.

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

A microprocessor-controlled tester detecting ground resistance, soil resistivity, AC/DC voltage, DC resistance and AC current. It supports wired/wireless data transmission, stores 500 groups of data, and offers multiple measurement methods with strong anti-interference performance.

Features:

  1. Multi-parameter measurement: AC/DC voltage, AC current, DC resistance, ground resistance and soil resistivity.
  2. Multiple measurement methods: 2/3/4-wire method, selection method and dual-clamp non-contact method.
  3. Fast filtering technology minimizes interference for accurate real-value measurement.
  4. Simultaneous display of auxiliary electrode resistance to avoid environmental measurement errors.
  5. Wired (USB) and wireless (Bluetooth) connectivity for remote control and data export.
  6. Color display with adjustable brightness for various usage scenarios.
  7. Intelligent alarms for over-limit values and 500-group data storage with full indicator.
  8. Built-in 11.1V lithium battery supporting over 1000 continuous measurements in AC resistance mode.

 

Parameter:

  1. Environmental conditions (reference): 23℃±5℃, ≤75%RH
  2. Interference limit: Voltage ＜20V (avoid), current ＜2A (avoid)
  3. Electrode spacing: a＞5d (for R measurement); a＞20h (for ρ measurement)
  4. Power supply: Built-in 11.1V lithium battery, ≥1000 continuous measurements (AC resistance mode)
  5. Display: Color screen with adjustable brightness
  6. Measurement methods & current: 2/3/4-wire & selection method: Pole-shifting method, max 42.0mA; Dual-clamp method: Non-contact mutual inductance, max 40mA; DC resistance: Pole-shifting method; AC current: Average rectification (clamp-on)
  7. Test waveform: Sine wave
  8. Test frequency: 128Hz
  9. Open-circuit test voltage: Max AC 30.0V, Max DC 30.0V
  10. Electrode spacing range: 0.1m～100.0m
  11. Dimensions: Main unit: 277.2mm×227.5mm×153mm; Current clamp: 101mm×27mm×214mm (each)
  12. Test cables: Standard: 4 pcs (15m red, 15m black, 10m yellow, 10m green); Simple: 2 pcs (1.5m yellow, 1.5m green)
  13. Auxiliary ground rods: 4 pcs (φ10mm×200mm)
  14. Current clamp specs: Caliber φ50mm, 2m lead, banana & audio plugs
  15. Measurement speed: AC current/ground voltage ≈3 times/sec; ground resistance/soil resistivity ≈10 sec/time
  16. Data storage: 500 groups, "FULL" indicator when full
  17. Overload protection: AC 280V/3s between H-E and S-ES ports
  18. Insulation resistance: ≥20MΩ (500V between circuit and case)
  19. Withstand voltage: AC 3700V/rms (between circuit and case)
  20. Compliance: IEC61326(EMC), IEC61010-1, IEC61557-1/5, JJG 366-2004, JJG 1054-2009
  21. Operating conditions: -10℃～40℃, ≤80%RH
  22. Storage conditions: -20℃～60℃, ≤70%RH
  23. Weight: Main unit: 1975g (with battery); Current clamps: 940g (2 pcs); Test cables: 1300g (including simple cables); Auxiliary ground rods: 850g (4 pcs)

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Kaidi Zhengda

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