Clamp ground resistance tester

Clamp Ground Resistance Tester

MODEL - KM 1690 / KM 1790

Clamp ground resistance tester is a new generation of groundless pile measurement method that our company's technical team meticulously developed. It uses a brand new generation of LCD, black screen backlight display and microprocessor technology to measure the grounding resistance through inductive method. When measuring a grounded system with a loop, it is not necessary to disconnect the ground lead wire, and no need for auxiliary electrodes. It is safe and fast. Widely used in telecommunications, electricity, meteorology,computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding networks, lightning rods and so on. The instrument has the test precision, fast, simple, stable, reliable and other features

Clamp ground resistance tester is microprocessor controlled, and accurately detects ground resistance. It uses a fast filtering technique to minimize interference. At the same time store 300 groups of data, with unique features such as numerical maintenance and intelligent alarm prompts

General Specification
• New black screen design, luxury
• Ω+A same screen display
• Quick self-test function without waiting
• Using fast filtering technology, strong anti-interference ability
• New design, long life clamp head
• 300 sets of storage
• Resistance Range: 0~1200Ω
• Resistance resolution: 0.001Ω
• Current Range: 0~20A (KM 1790)
• Current resolution: 0.01mA (KM 1790)
• Explosion-proof Type (KM 1690)
• Multifunctional Type(KM 1790)

General Specification
Function Ground resistant test, Loop resistance test, leakage current test

Ground resistant: 0.01Ω-1200Ω Resolution: 0.001Ω Accuracy: ±1%±0.01Ω
Current : 0.00mA-20.0A Resolution: 0.01mA Accuracy: ±2% ± 1mA
Ambient temperature and humidiy 23 ℃ ± 5 ℃, below 75 % rh
Power Supply 4 section 5 Alkaline Dry Battery
Measurement Method Mutual induction
Clamp Diameter 55 mm x 32 mm
Ω+A Synchronized display Ω+A same screen display
Display Mode 4-digit LCD display, black screen design
LCD Dimension 46mm × 29mm
Meter Dimension W/T/H: 85mm × 58mm x 285mm
Sampling Speed About 2 times/second
Data Storage 300 Groups, the symbol “MEM” gives indication, “FULL” mark will flash to indicate the memory has been full Data Storage
Data Review "MR" symbol indication when reviewing data
Overflow Display Exceed measurement range overflow function: “OL ” symbol display
Interference Test Automatic identify interference signal, "NOISE" symbol indication when the interference current is large
Alarm Function Alarm when the measured value exceeds the alarm setting value
Battery Voltage Real-time display of battery power, reminding timely charging when battery
voltage is low
Automatic shut-down "APO" instruction, automatic shutdown after 5 minutes boot
Power Consumption 50MA Max
Weight Instrument: 1180g (with battery)
Working Temperature and Humidity -10°C~40C; below 80% rh
Storage Temperature and Humidity -20°C~60C; below 70% rh
Insulation Resistance 20Ω or more (500V between circuit and outside)
Pressure Resistance AC 3700V/rms(between circuit and outside)
External magnetic field < 40A/m
External electric field <1V/m
Suitable for Safety Regulations IEC61010-1(CAT III 300V, CAT IV 150V, Pollution Degree 2); IEC61010-031; IEC61557-1 (grounding resistance)
Accessories 5# battery, Calibration ring, Instruction Manuals, Instruments box

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