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Help CenterNANAO ELECTRIC Manufacture NADWG Series Substation Ground Resistance Tester
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Product introduction
NADWG Series 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. NADWG Series Substation ground resistance tester uses different frequency interference technology, strong interference environment can be measured accurately the data frequency 50Hz. Test current is (0 ~ 3.0A), does not improve potential of grounding device, but it also has strong anti-interference ability, it can measurement without the power cut.
Also called name
Ground network earth resistance tester, Ground Resistance Tester, Earth Ground Resistance Tester, Grounding Resistance Tester
The Characteristics of the products
1、Good measurement of power frequency equivalence. Test current waveform is a sine and two frequencies used in measurement.
2、Anti-interference ability ground voltage. The instrument uses different frequency measurement, with modern hardware and software filtering technology, making the instrument has a very high anti-jamming performance, stable and reliable test data. 15V power frequency (50Hz) interference voltage error caused only 0.001Ω.
3、High precision. Used to measure ground impedance small large ground network.
4、And powerful. Measurable standards prescribed all the features of the grounding device parameters. Not only measure ground impedance, also measure the resistance component and the reactance component.
5、With the break alarm function, to avoid erroneous measurements.
6、Simple operation. Full English menu operation, directly showing the measurement results, and comes with mini printer can print on-site measurements.
7、The wiring labor is small, no large current line.
8、Small size, light weight, easy to carry.
The parameters of the products
Project parameters | Model | ||||
NADWG-3A Substation Ground Resistance Tester | NADWG-5A Substation Ground Resistance Tester | NADWG-5B Substation Ground Resistance Tester | |||
An impedance measuring range | 0～15Ω | 0～50Ω | 0～5000Ω | ||
Resolution | 0.001Ω | 0.001mΩ | |||
The measurement error | ±（reading×1% + 0.001Ω） | ±（reading×2 % + 0.005Ω） | ±（reading×2 % + 0.01Ω） | ||
Hnti-interference ability of ground voltage | 15V power frequency interference voltage error caused only 0.001Ω | Anti-frequency： 50Hz Interference voltage: 10V | Anti-frequency： 50Hz Interference voltage: 10V | ||
The test current waveforms | sine | sine | sine | ||
The test current frequency | - | 45Hz、55Hz dual-frequency |
45Hz、50Hz、55Hz、60Hz、65Hz Single Frequency; 45/55Hz、55/65Hz、47.5/52.5Hz Automatic dual-frequency
| ||
The output current | 0～3.0A | 0～5.0A | 1A、2A、3A、4A、5.0A | ||
The output voltage | 0～100V | 0～420V | 0～400V | ||
The measurement line requirements | The sectional area of copper core of current lines ≥1.0mm2 | The sectional area of copper | The sectional area of copper | ||
The sectional area of copper core | The sectional area of copper core of voltage lines≥1.0mm2 | The sectional area of copper core of voltage lines≥1.0mm2 | |||
Power supply | AC220V±10%，50Hz | AC180～220V，50/60Hz | |||
Use of the environment | Temperature：-10℃～50℃；Relative humidity：<90% | ||||
Dimension | 440mm×350mm×310mm | 440mm×350mm×210mm | 320mm×285mm×285mm | ||
Weight | 6.0kg | 18kg | 18kg | ||
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