Description
Overview
GAOTek Ground Resistance Clamp Meter mainly uses frequency large current three-pole measurements to test the ground network earth resistance. To prevent frequency interference generated by the power grid operation from improving the accuracy of the measurement results, the insulation preventive test code states the test current of frequency large current method shall not be less than 30 A. Thus, the test equipment is too heavy; the test process is complex; there is large work strength, a long test time and many other issues. Ground Network Earth Resistance Tester adopts the new variable frequency AC power. It takes advantage of computer processing control and signal processing to solve the interference problem of the testing process, simplifying the test operation process and improving the precision and accuracy of test results, greatly reducing the labor intensity and testing costs. This device applies to test frequency ground resistance, contact voltage, pace voltage and earth electric resistivity. Can test substation grounding grid (4 Ω), fire and water electric power plants, microwave stations (10 Ω), lightning rod multi-purpose model (10 Ω). It adopts different frequency anti-jamming techniques that can get the data under 50Hz in strong interference circumstances. The maximum measured current is 5 A, which will not cause the electric potential of the grounding device to be too high, it has a strong anti-interference ability in the meantime, so it does not need to power off during the test.
Features
- Accurate frequency equivalence, test at 45 Hz and 55 Hz
- Robust anti-jamming, stable and reliable results
- High precision with 0.005 Ω error
- Versatile testing capabilities for various parameters
- User-friendly menu display for easy operation
- There is no requirement for a high current wire
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Technical Specification
Power Source | 6 V DC |
Temperature | 14 °F to 122 °F (-10 °C to 55 °C) |
LCD Display | 4 Digital LCD1.85 in × 1.122 in (47 mm × 28.5 mm) |
Span Of Jaw | 1.26 in (32 mm) |
Explosion Proof Mark | Exia II BT3 |
Protection Level | Double Insulation |
Structural Feature | In the jaw way |
Shift | Automatic |
External Magnetic Field | < 40 A/m |
External Electric Field | < 1 V/m |
Each Measuring Time | 1 s |
Resistance Measurement Range | 0.01 Ω to 1000 Ω |
Max Resistance Measurement Resolution | 0.001 Ω |
Current Measurement Range | 0 A to 20 A |
Measured Current Frequency | 50 Hz or 60 Hz |
Setting Range of Resistance Alarm Critical Value | 1 Ω to 199 Ω |
Setting Range of Current Alarm Critical Value | 1 mA to 499 mA |
Current Measurement Range | 0 A to 20 A |
Measured Current Frequency | 50 Hz to 60 Hz |
Dimension | 13.78 in × 7.87 in × in 3.93 in (350 mm x 200 mm x 100 mm) |
Weight | 4.4 lb (2 Kg) |