Description
Technical Specifications
| Function | Ground resistance, Soil resistivity, DC resistance, Ground voltage, AC current |
| Interference Voltage | < 20 V (should be avoided) |
| Interference Current | < 2 A (should be avoided) |
| Measure R Electrode Spacing | A ＞5d |
| Measured Electrode Spacing | A ＞20h |
| Power | 8.4 V lithium battery (built-in) |
| Backlight | Controllable backlight, suitable for use in dim places |
| Measurement Mode | Precise four-wire three-wire measurement, simple two-wire measurement Selection method, double clamp method for measuring grounding resistance |
| Measurement Methods | 2.3.4-wire method measurement: Polarization method, measuring current 20 mA Max Soil resistivity: four-pole method Selectivity Measurement: Polarization Method, Measuring Current 20 mA Max Double clamp method: non-contact mutual inductance measurement method, test current 1 mA Max DC resistance: polarization method AC current: average rectification (clamp) Ground Voltage: Average Rectification (between S-ES interface) |
| Test Voltage Waveform | Sine wave |
| Test Frequency | 128 Hz |
| Short Circuit Test Current | AC 20 mA max |
| Open Circuit Test Voltage | AC 28 V max |
| Display Mode | 4-bit large LCD display, with backlight |
| Measurement Instructions | LED flashing indicator during measurement |
| LCD Size | 4.3 in x 2.6 in (111 mm × 68 mm) |
| LCD Display Field | 4.2 in x 2.5 in (108 mm × 65 mm) |
| Instrument Size | L/W/H：10.7 in x 8.9 in x 4.5 in (277.2 mm × 227.5 mm × 153 mm) |
| Clamp Size | L/T/H：3.9 in x 1 in x 8.4 in (101 mm × 27 mm × 214 mm) |
| Test Line | 4 strips red 15 m, black 15 m, yellow 10 m, green 10 m each one |
| Simple Test Line | 2strips：yellow 1.5 m, green 1.5 m each one |
| Auxiliary Grounding Rod | 4PCS：φ 0.39 in x 7.8 in (10 mm × 200 mm) |
| Current Clamp | 2 PCS: Banana plug |
| Current Clamp Diameter | Φ 1.9 in (50 mm) |
| Current Clamp Lead | Length 2 m |
| Measure Time | AC current about 2 times/sec; Ground voltage about 2 times/sec; Grounding resistance, soil resistivity: about 7 seconds/time |
| Line Voltage | Measurement below AC100V (ground voltage measurement function cannot be used to measure commercial power) |
| USB Interface | With USB interface, storage data can be uploaded to the computer, save and print |
| Communication Line | One USB communication line, 1.5 m long |
| Data Storage | 500 groups, “MEM” storage indicates, flashing “FULL” symbol indicates that the memory is full |
| Data Review | Data review function: “MR” symbol display |
| Overflow Display | Over-range overflow function: “OL” symbol display |
| Current clamp Low Current Indication | When measuring by the selection method or the double-clamp method, when the current signal received by the current clamp A is |
| Interference Test | Automatic identification of interference signals, “NOISE” symbol indication when the interference voltage is higher than 5V |
| Auxiliary Grounding Test | With auxiliary ground resistance test function, 0.00KΩ ~ 30 k Ω (Rh max = 3 k Ω +100R < 50 k Ω; Rs max = 3 k Ω +100R < 50 k Ω) |
| 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 Shutdown | “APO” Indicates, automatic Shutdown After 15 Minutes |
| Power Consumption | Standby: 40 mA Max (Backlight off) Turn on backlight: 43mA Max Measuring：120 mA Max (Backlight off) |
| Overload Protection | Grounding resistance: AC 280 V/3 seconds between H-E and S-ES ports |
| Insulation Resistance | 20 M Ω (500 V between circuit and housing) |
| Pressure Resistance | AC 3700 V/ rms (between circuit and housing) |
| Electromagnetic Properties | IEC61326 (EMC) |
| Suitable For Safety Regulations | IEC61010-1 (CAT Ⅲ 300V, CAT IV 150V, pollution level 2); IEC61010-031; IEC61557-1(grounding resistance); IEC61557-5(soil resistivity); JJG 366-2004. JG 366-2004(ground resistance meter); JJG 1054-2009(Clamp grounding resistance meter). |
| Ambient Temperature And Humidity | 73 ℉ ± 9 ℉ (23 ℃ ± 5 ℃), below 75% RH |
| Working Temperature And Humidity | 14 ℉ to 104 ℉ (-10 ℃ to 40 ℃), below 80% RH |
| Storage Temperature And Humidity | -4 ℉ to 140 ℉ (-20 ℃ to 60 ℃), below 70% RH |
| Weight | Instrument： 5.3 lb (2.43 kg) (with battery) Current clamp：2 lb (0.94 kg) (2PCS) Test lines：2.8 lb (1.3 kg) (including simple test line) Auxiliary grounding rod： 1.7 lb (0.85 kg) (4PCS) |