Ground resistance tester model specifications

The ground resistance tester is a special instrument for measuring ground resistance. To choose a high-quality and cost-effective ground resistance tester, you must first understand the external structure of the ground resistance, and then go deep into the internal structure of the ground resistance measuring instrument, understand its functions, and choose a cost-effective digital ground resistance tester based on your own needs. Today, the editor of Wuhan Longdian Electric will give you a detailed answer below.

Digital ground resistance tester

Digital ground resistance tester is suitable for measuring the ground resistance of various devices and the resistance value of low-resistance conductors in power, post and telecommunications, railways, communications, mining and other departments;

product features:

1. The ground resistance tester adopts high-strength aluminum alloy as the casing. In order to prevent power frequency and radio frequency interference, the circuit adopts phase-locked loop synchronous tracking detection method and is equipped with a switched capacitor filter, so that the instrument has better anti-interference ability.

2. Use DC/AC conversion technology to convert DC into AC low-frequency constant current for easy measurement.

3. The auxiliary grounding resistance is allowed to vary between 0~2KΩ (RC) and 0~40KΩ (RP) without affecting the measurement results.

4. The ground resistance tester does not require manual adjustment of balance, and has a 3 (1/2) digit LCD display. In addition to measuring ground resistance, it can also measure low-resistance conductor resistance, soil resistivity, and AC ground voltage.

5. If the test circuit is blocked, the meter displays “1” which indicates overflow, which is in line with normal measurement practices.

LDCR-2000 Double Clamp Ground Resistance Tester

Clamp-type ground resistance tester is widely used in the ground resistance measurement of power, telecommunications, meteorology, oil fields, construction and industrial electrical equipment;

product features:

1. Adopt advanced algorithms and digital integrated processing technology.

2. Start the test immediately without waiting for self-check.

3. Break through the problem of bulky products and make them more in line with the characteristics of handheld instruments.

4. Brand new appearance design, 6-key operation on the panel, direct performance.

5. Added sound and light alarm function and interference signal identification indication function.

6. The measurement range is increased to 0.01Ω-1000Ω, 99 groups of data can be stored, the power consumption is lower, and the maximum startup and working current is less than 50mA.

The geodetic grid ground resistance tester adopts the heterodyne frequency method for measurement, and with the help of modern software and hardware filtering technology, the instrument has high anti-interference performance and the test data is stable and reliable.

product features:

1. The measurement can be carried out without power outage, and the frequency conversion technology avoids the main power grid power frequency interference.

2. Different frequency small current (0~50A) measurement, injection current frequency (30Hz-70Hz) is adjustable

3. High-power variable frequency power supply ensures isolation and maximum possible current output

4. The frequency modulated voltage and current meter adopts a digital bandpass filter with a calibration device to ensure convenient and accurate measurement.

5. High stability frequency signal source to ensure the accuracy of the entire testing process

6. Repeatable measurement improves measurement accuracy and saves time and money

7. The earth grid ground resistance tester has over-high voltage, over-current, short circuit and overheating warning devices

8. 32-bit microprocessor control, intelligent, flexible and convenient operation

9. Low distortion interference, input/output completely isolated, safe and reliable

10. Unique instantaneous value control, small waveform distortion and high control accuracy

11. The dynamic response is extremely fast. When the load changes from 0 to 100%, the steady-state response time is <0.1S

12. No radiation interference, small harmonic components, and special treatment, no interference

13. Original imported Japanese Mitsubishi IGBT high-frequency inverter and movement, stable and reliable

14. Output voltage: low range: 0-200V, high range: 0-400V continuously adjustable

15. Frequency range: 30Hz-70Hz Frequency step: 1Hz

16. Frequency stability: < 180ppm

17. Power supply: AC180～270V, 50/60Hz