Characteristics of frequency conversion grounding characteristic measurement system

The frequency conversion grounding characteristic measurement system adopts the current digital frequency selection measurement (electronic countermeasures) technology, which has * anti-interference ability * and eliminates the errors caused by interference from power frequency induction, zero sequence current, harmonics, and stray signals in the measurement; The variable frequency grounding characteristic measurement system uses a pure sine wave high-power signal source as the test power supply, collects data at multiple frequency points, and overcomes the limitations of the two-point interpolation method; The variable frequency grounding characteristic measurement system is particularly suitable for measuring the grounding impedance and other characteristic parameters of large and ultra large grounding grids. The variable frequency grounding characteristic measurement system has powerful functions, excellent performance, and easy use. Currently, it is at a high level in China and is an ideal choice to replace imported products.

The frequency conversion grounding characteristic measurement system consists of a frequency modulation impedance tester, a high-power signal source, and a coupling transformer.
2. Grounding impedance measurement
3. The frequency conversion grounding characteristic measurement system measures the distribution of ground grid current
4. The ratio and current of the current flowing through each grounding pole (pile) can be measured
5. Distribution in the grounding system
6. Potential distribution curve
7. Through measurement, the potential distribution and conductivity performance in the grounding network can be understood.
8. Directly measure the impedance value of the circuit
9. Measurement of step voltage and step potential difference.
10 . Measurement of contact voltage and contact potential difference.
11. Soil resistivity test

1. Measurement range:
2. Grounding impedance: 0-9999.999 Ω
3. Voltage: 0-2V~200-800V (automatic)
4. Current: 0~2A~20 A (automatic)
5. Power factor: 0.000-1.000+(L), - (C)
6. Select frequency: 40Hz~70Hz (step 1Hz)
7. Input impedance: Current circuit: ≤ 0.1 Ω
Voltage circuit: ≥ 1M Ω
8. passband: ≤± 0.5Hz attenuation ≥ 60dB/Hz
9. Test time: ≤ 3 seconds
10. System measurement accuracy: Level 0.5
11. Working power supply: 220 V ± 10%
12. Operating environment temperature: -25 ℃ to+50 ℃
13. Dimensions and weight: 260 × 165 × 320mm, 3.6kg
14. Technical parameters of signal source:
Output capacity: 5kVA
Output voltage (current) 0-150V (0-36.8AMax)
0～300V （0～18.4AMax）
0～800V （0～6.9AMax）
Waveform distortion:<0.5%
Output frequency range: 40-450Hz