| Function |
Measure grounding resistance, soil resistivity; DC resistance, earth voltage, alternating current , leakage current |
| Power Supply |
DC 7.4V 2600mAh rechargeable lithium battery, full of about 8.4V |
| Backlight |
Controllable screen backlight, suitable for dim places |
| Measuring Method |
DC resistance |
DC resistance 2-wire method |
| DC resistance 4-wire method |
| Earth resistance |
Earth resistance 2-wire method |
| Earth resistance 3-wire method |
| Earth resistance 4-wire method |
| Earth resistance single clamp 3-wire method (selection method) |
| Earth resistance single clamp 4-wire method (selection method) |
| Earth resistance double clamp method |
| Soil resistivity(Wenner method) |
| Earth current |
Current clamp measurement |
| Earth voltage |
Average rectification |
| Test Voltage Wave |
Sine wave |
| Test Frequency |
128Hz/111Hz/105Hz/94Hz(AFC) |
| Short-circuit Test Current |
AC 250mA max |
| Open-circuit Test Current |
AC 40V max |
| Electrode Distance Range |
1m-100m |
| Display Mode |
4-digital large LCD display, with screen backlight |
| Measuring Indicator |
During measurement, LED flash indicator, LCD countdown display |
| LCD Frame Dimension |
128mm×75mm |
| LCD display area |
124mm×67mm |
| Instrument Dimension |
280mm(L) X 260mm(W) X 160mm(H) |
| CT Size |
223mm X 120mm X 39mm |
| Test Wire |
4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
| Simple Test Wire |
2 wires: each for red 1.6m and black 1.6m |
| Auxiliary Grounding Rod |
4PCS: Φ10mm X150mm |
| Current Clamp |
2PCS :1 blue-black plug and 1 red-black plug |
| Clamp Caliber |
Φ70mm |
| Clamp Lead Wire |
2m |
| Measuring Rate |
AC current: about 2 times/second |
| Earth Voltage: about 2 times/second |
| Earth resistance: about 7 seconds/time |
| Measuring Times |
Over 5000 times (Short-circuit test, interval time should be at least 30 seconds) |
| Line Voltage |
Measurement below AC 600V |
| Communication Interface |
Bluetooth module, USB interface, storage data can be uploaded to computer, saved or printed. |
| Communication Wire |
USB communication wire x1pcs, with length 1.5m |
| Data Hold |
Data hold function: "HOLD" symbol display |
| Data Storage |
2000 groups, “MEM” storage indicator, "FULL" symbol flash display storage is full |
| Data Access |
Data read function:"READ" symbol display |
| Overflow Display |
Exceed measuring range overflow function: "OL"symbol display |
| Low Current Indicator of Current clamp |
Measurement with selection method or double clamp, the current signal received by CT2 is lower than 0.5mA,will display“ ”, and should check the clamping direction of the CT2 current clamp |
| Interference Test |
Automatic identification of interference signals, “NOISE” symbol indication when the interference voltage is higher than 5V |
| Auxiliary Grounding Test |
With auxiliary grounding resistance test function, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
| Alarm Function |
Measuring value exceeds alarm setting value, will make out "Toot-toot-toot" alarm sound. |
| Battery Voltage |
While battery voltage decreases to around 7.2V±0.1V, will display battery voltage low symbol, and reminding to replace the battery |
| Automatic Shutdown |
Automatically shut down after 15 minutes of power on |
| Working Current |
Backlight: 25mA Max(only backlight power consumption) |
| Standby:25mA Max(Backlight off after power on) |
| Measurement:150mA Max(Backlight shut off) |
| Weight |
Tester: 2290g |
| Current Clamp:1100g(2pcs) |
| Total weight: 6800g(include all accessories) |
| Working Temperature & Humidity |
-10℃-40℃, below 80%rh |
| Storage temperature & humidity |
-20℃-60℃, below 70%rh |
| Protection Level |
IP65(close the case) |
| Overload Protection |
Measure earth resistance: between each interfaces of C(H)-E, P(S)-ES, AC 280V/3 seconds |
| Insulation Resistance |
Over 20MΩ(between circuit and outside shell is 500V) |
| Withstanding Voltage |
AC 3700V/rms. (Between circuit and outside shell) |
| Electromagnetic Features |
IEC61326(EMC) |
| Protection Type |
IEC61010-1(CAT Ⅲ 300V, CAT IV 150V, Pollution 2); |