Product introduction:

 

 

 

Fdz-iv type ground network resistance comprehensive measuring instrument is based on the fdz-iii type ground network grounding resistance comprehensive measuring instrument of power equipment produced by our company, which increases the grounding impedance, current pole impedance and other functions. Three pole method, frequency method, large current method, the advantages of the principle of with the single chip processor as the core of intelligent detection system, the equipment is available both pilot frequency single frequency measurement, and the available automatic double frequency measurement method, which greatly reduced the large network grounding resistance in the process of measuring interference caused by measurement error, and improves the accuracy of measurement, are both available three method of measuring grounding resistance of grounding network, but also the soil resistivity is measured using quadrupole method, the output current is moderate (I ≦ 5 a). Simple operation, clear interface. The test data is rapid, accurate and reliable.

 

 

 

Functional description:

 

 

 

1. This instrument has perfect functions and can measure the grounding resistance, impedance and soil resistivity of the ground network.

 

2. Adopt 40 Hz, 60Hz, 40 Hz/60Hz automatic dual frequency conversion for measurement, and display the measurement frequency, measurement voltage, current and measurement result at the same time in the measurement process. The instrument adopts high-precision digital frequency selection, which can avoid the interference of power frequency and other frequencies to the greatest extent and make the measurement more accurate.

 

3. The instrument is light in weight, small in size and convenient to carry. The Chinese menu and concise human-machine dialogue interface make the operation of the instrument more simple.

 

4. The instrument can not only measure the grounding resistance and impedance of the earth network, but also the soil resistivity and the current pole impedance. One machine multi-purpose, greatly reduce the labor intensity of testing personnel.

 

 

 

Technical parameters

 

 

 

1. Measurement content:

 

Resistance, low power equipment ground net.through impedance (Ω)

 

Low soil resistivity (Ω m.)

 

Low current pole resistance (Ω)

 

2. Measurement range:

 

Low resistance and impedance power equipment ground net.through Ω 0 ~ 200

 

Low soil resistivity 0 ~ 9999 Ω m.

 

3. Input power: 220V 10% 50 Hz 3a

 

4. Output power: 110V 5A

 

5. Output frequency: 60Hz, 40 Hz, 40 Hz/60Hz automatic dual frequency conversion

 

6. Measurement accuracy:

 

A. network grounding resistance and impedance: 0 ~ 2 Ω 2% + / - 0.02 Ω resolution: 0.001 Ω

 

0 ~ 20 Ω 2.5% plus or minus 0. 2 Ω resolution: 0.001 Ω

 

0 ~ 200 Ω 2.5% plus or minus 0. 5 Ω resolution: 0.001 Ω

 

B. soil resistivity 0 ~ 9999 Ω m. plus or minus 10% resolution: 1 Ω m.

 

7. Measurement method: automatic measurement

 

8. Instrument weight: 16Kg(including shockproof box)

 

9. Display mode: large-screen LCD display

 

10. Printing method: thermal printing

 

11. Measurement conditions: (1) no power failure measurement

 

(2) environmental temperature: - 20 ℃ ~ 60 ℃

 

Relative humidity: not more than 85%