Description
The Earth Resistance Tester is designed for precise measurement of earth voltage and resistance in electrical circuits. It features a 3½-digit LCD that provides clear readings up to 1999Ω and displays “1 – – – –” for out-of-range measurements. The device runs on six AA batteries and includes a 10-minute auto power-off function to conserve energy.
This tester ensures safe and reliable testing with an earth resistance current of 2mA, which prevents tripping earth leakage circuit breakers. It comes with test leads, auxiliary earth spikes, and a carrying case for convenient field use. Built to meet EN 61010-1 and EN 61557 standards, it provides automatic warnings if the auxiliary earth spike resistance exceeds the allowed tolerance. The data hold function and zero ohm adjustment make it practical for both quick checks and detailed diagnostics.
Specifications
GENERAL SPECIFICATION:
| Parameter |
Specification |
| Safety Standard |
EN 61010-1 Overvoltage Category III
EN 61557 |
| Display |
3½ digit LCD, maximum reading 1999 |
| Insulation Resistance (between circuit and housing) |
> 5 MΩ (measured at 300 V DC) |
| Withstand Voltage (between circuit and housing) |
3700 V AC for 1 minute |
| Auto Power Off |
Approximately 10 minutes |
| Over Range Indication |
“1 – – – -” displayed on LCD when measurement exceeds range |
| Operating Temperature & Humidity |
0°C to 40°C (32°F to 104°F), below 80% RH (non-condensing) |
| Storage Temperature |
-10°C to 60°C (14°F to 140°F) |
| Dimensions (L × W × H) |
165 × 100 × 57 mm |
| Weight |
Approx. 500 g (including batteries) |
| Power Source |
DC 9 V (6 × 1.5 V “AA” size batteries or equivalent) |
| Included Accessories |
• Test leads × 1 set
• Auxiliary earth spikes × 2 pcs
• 1.5 V AA batteries × 6 pcs
• Carrying case × 1
• Instruction manual × 1 |
Measuring Range and Accuracy ( at 23℃ and 45-75%RH )
| Function |
Measuring range |
Accuracy |
Overload Protection |
| Earth Voltage |
0 ~ 199.9V (50Hz, 60Hz) |
±(1%rdg + 4dgts) |
300Vrms / 1 minute |
| Earth Resistance |
0 ~19.99Ω |
±(2%rdg + 0.1Ω) |
200Vrms / 10 seconds |
| 0 ~ 199.9Ω |
±(2%rdg+3dgts) |
| 0 ~ 1999Ω |
Current Consumption ( typical Value with battery voltage of 9V )
| Range |
ON |
| 20Ω/ 200Ω/2000ΩΩ |
42mA |
| Earth V |
22mA |
