Description
This Ground Resistance Clamp Meter is designed for quick and safe earth resistance measurement in grounding systems. Using a non-contact clamp method, it eliminates the need for auxiliary electrodes, saving time during field inspections. The meter supports a wide resistance range from 0.025Ω to 1500Ω, making it suitable for telecommunications sites, power plants, factories, and fuel stations.
The instrument also measures leakage current (0.3 mA to 35 A) and ground current with True RMS accuracy, ensuring reliable readings even with distorted waveforms. A programmable high and low alarm helps technicians quickly identify abnormal grounding conditions. With auto range selection, users can focus on testing without manual adjustments.
For monitoring and reporting, the meter includes programmable data logging with capacity for 116 records and adjustable intervals from 1 to 255 seconds. The large 9999-count LCD, fast 20 samples per second, and rugged clamp with 35 mm jaw opening make it ideal for professional field use. The unit comes ready with calibration plate, battery, carrying case, and manual.
Specifications
General Specifications:
| Conductor Size: |
35 mm (1.38”) approx. |
| Jaw Opening: |
38 mm (1.49”) approx. |
| Battery Type: |
9V IEC 6 LR61 (Alkaline) |
| Battery Life: |
3000 measurements |
| Display: |
4 digits 9999 counts LCD |
| Range Selection: |
Auto |
| Auto-Power-Off: |
About 4~6 minutes |
| Overload Protection: |
100A (continuous); 200A (5 sec.) |
| Overload Indication: |
OL |
| Power Consumption: |
40mA |
| Low Battery Indication: |
|
| Sampling Time: |
20 times / second |
| LCD update: |
2 times / second |
| Temperature Coefficient: |
0.1% x (Specified Spec.) / °C (＜18°C or ＞28°C) |
| Operating Temperature: |
0°C to 50°C (14°F to 122°F) |
| Operating Humidity: |
less than 85% relative |
| Altitude: |
up to 2000M |
| Storage Temperature: |
-20°C to 60°C (-4°F to 122°F) |
| Storage Humidity: |
less than 75% relative |
| Dimension: |
276mm (L) x 100mm (W) x 47mm (H)
10.8” (L) x 3.9” (W) x 1.9” (H) |
| Weight: |
750g / 1.65 lbs |
| Accessories: |
Resistance calibration plate x 1,
9V battery (installed) x 1,
User manual x 1,
Carrying case x 1 |
Electrical Specifications: (23℃±5℃)
Ground Resistance (Auto range):
| Range |
Resolution |
Accuracy of Reading1 |
| 0.025 – 0.250Ω |
0.002Ω |
± 1.5% ± 0.05Ω |
| 0.251 – 1.000Ω |
0.02Ω |
± 1.5% ± 0.05Ω |
| 1.001 – 10.00Ω |
0.02Ω |
± 1.5% ± 0.1Ω |
| 10.01 – 50.00Ω |
0.04Ω |
±2.0% ± 0.3Ω |
| 50.01 – 100.0Ω |
0.04Ω |
±2.0% ± 0.5Ω |
| 100.1 – 200.0Ω |
0.4Ω |
± 3.0% ± 1.0Ω |
| 200.1 – 400.0Ω |
2Ω |
± 5.0% ± 5Ω |
| 400.1 – 600.0Ω |
5Ω |
± 10% ± 10Ω |
| 600.1 – 1500Ω |
20Ω |
± 20% |
1 Loop resistance noninductive, external field < 200 A/m, external electrical field < 1 V/m, conductor centered.
2 Resistance Measurement Frequency: 3.333KHz
High and Low Alarm
| |
Range |
Resolution |
| High Alarm |
0 – 1510Ω |
1Ω |
| Lo Alarm |
0 – 1510Ω |
1Ω |
Ground/ Leakage Current (Auto range, 50/60 Hz, True RMS, Crest Factor < 3.5)
| Range |
Resolution |
Accuracy of Reading |
| 0.300 – 1.000 mA |
0.001 mA |
± 2.0% ± 0.05 mA |
| 1.00 – 10.00 mA |
0.01 mA |
± 2.0% ± 0.03 mA |
| 10.0 – 100.0 mA |
0.1 mA |
± 2.0% ± 0.3 mA |
| 100 – 1000 mA |
1 mA |
± 2.0% ± 3 mA |
Ground Current (Auto range, 50/60 Hz, True RMS, Crest Factor < 3.5)
| Range |
Resolution |
Accuracy of Reading |
| 0.200 – 4.000 A |
0.001 A |
± 2.0% ± 0.03 A |
| 4.00 – 35.00 A |
0.01 A |
± 3.0% ± 0.03 A |
Accuracy of Resistance Calibration Plate: ±1%
Data Logging Capacity：116 records
Data Logging Interval: 1 to 255 seconds
