NRDWG-5A Substation Ground Resistance Tester

NRDWG-5A Substation Ground Resistance Tester

Classification: Earthing/Insulation/SF6 Gas Detection

Reference standard: GB/T17949.1-2000,DL/T475-2006

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction

    NRDWG-5A Substation ground resistance tester can measure the substation grounding grid (4Ω), fire and water power plants, microwave station (10Ω), lightning (10Ω) multi-purpose models, using a new type of variable frequency AC power, and the use of computer processing control and signal processing and other measures, a good solution to the interference problem during testing, simplifying the test procedure to improve the precision and accuracy of test results, greatly reducing the labor intensity of testing personnel and testing costs.
    NRDWG-5A Substation ground resistance tester can test grounding impedance, the contact voltage, step voltage, the diverting potential of all kinds grounding device, and the potential gradient field of surface parameters such as frequency and soil resistivity. NRDWG-3A Substation ground resistance tester uses different frequency interference technology, strong interference environment can be measured accurately the data frequency 50Hz. The Maximum test current is 5A, does not improve potential of grounding device, but it also has strong anti-interference ability, it can measurement without the power cut.

Alternative name
Ground network earth resistance tester
The Characteristics of the products

1. Good frequency equivalence. The measured current waveform is sine wave, the difference between frequency and power frequency is 5Hz, use 45Hz and 55Hz two frequency to test.

2. Strong anti-jamming ability, use different frequency method , assorted with modern hardware and software filtering techniques, make the device with strong anti-jamming ability, test results stable and reliable.

3. High precision, intrinsic error 0.005Ω, can test the ground network of small impedance.

4. Powerful . can test current pile, voltage pile, ground resistance, pace voltage, contact voltage.

5. Easy to operate, menu operated, directly display the test results.

6. Do not need high current wire.

The parameters of the products

1, An impedance measuring range: 0 ~ 15Ω
2, Resolution: 0.001Ω
3, The measurement error: ± (reading × 1% +0.001 Ω)
4, Anti-interference ability of ground voltage: 15V power frequency interference voltage error caused only 0.001Ω
5, The test current waveforms: sine
6, The output current: 0 ~ 3.0A
7, The output voltage: 0 ~ 100V
8, The measurement line requirements: current cross-sectional area ≥ 1.5mm2 copper wire
                         Voltage line cross-sectional area ≥ 1.0mm2copper
9, Power supply: AC220V ± 10%, 50Hz
10,Use of the environment: Temperature: -10 ℃ ~ 50 ℃; Relative humidity: <90%
11,Dimension: 440mm × 350mm × 210mm
12,Instrument Weight: 18.0kg


Power supply: AC110V/115V/120V/127V/220V/230V/240V optional
Input frequency: 50Hz/60Hz optional
Note: The users can select the corresponding power which based on their local supply voltage and frequency, and we will confirm it before the delivery (or inform us that the goods will be used in which country advance)

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