產品簡介?

NADWG-5A大型地網接地電阻測試儀，可測變電站地網（4Ω）、水火電廠、微波站（10Ω）、避雷針（10Ω）多用機型，采用了新型變頻交流電源，并采用了微機處理控制和信號處理等措施，很好的解決了測試過程中的抗干擾問題，簡化了試驗操作過程，提高了測試結果的精度和準確性，大大降低了試驗人員的勞動強度和試驗成本。

NADWG-5A大型地網接地電阻測試儀適用于測試各類接地裝置的工頻接地阻抗、接觸電壓、跨步電壓、等工頻特性參數以及土壤電阻率。本儀器采用異頻抗干擾技術，能在強干擾環境下準確測得工頻50Hz下的數據。測試電流**5A，不會引起測試時接地裝置的電位過高，同時它還具有極強的抗干擾能力，故可以在不停電的情況下進行測量。

產品別名

地網接地電阻測試儀、大地網接地電阻測試儀、大型地網接地電阻測試儀

產品特性

1、測量的工頻等效性好。測試電流波形為正弦波，頻率僅與工頻相差為5Hz，使用45Hz和55Hz兩種頻率進行測量。

2、抗干擾能力強。本儀器采用異頻法測量，配合現代軟硬件濾波技術，使得儀器具有很高的抗干擾性能，測試數據穩定可靠。

3、精度高。基本誤差僅0.005Ω，可用來測量接地阻抗很小的大型地網。

4、功能強大。可測量電流樁，電壓樁的接地電阻，地網的接地電阻，導通電阻,土壤電阻率。

5、操作簡單。中英文菜單式操作，直接顯示出測量結果。

6、布線勞動量小，無需大電流線。

產品參數

1、阻抗測量范圍：0～150Ω

2、分辨率：0.001Ω

3、測量誤差：±（讀數×2％+0.005Ω）

4、抗工頻50Hz電壓干擾能力：10V

5、測試電流波形：正弦波

6、測試電流頻率：45Hz、55Hz雙頻

7、**輸出電流：5A

8、**輸出電壓：420V

9、測量線要求： 電流線銅芯截面積≥1.5mm2

電壓線銅芯截面積≥1.0mm2

10、供電電源：AC220V±10％，50Hz

11、外形尺寸：440mm×350mm×210mm

12、儀器重量：18kg

Product introduction

NADWG Series Substation ground resistance tester can test grounding impedance, the contact voltage, step voltage, thedivertingpotential of all kindsgrounding device, and the potential gradient field of surface parameters such as frequency and soil resistivity. NADWG Series Substation ground resistance tester usesdifferentfrequency interferencetechnology, strong interference environment can be measured accurately the data frequency 50Hz. Test current is (0 ~ 3.0A), does not improve potential of groundingdevice, butit also has stronganti-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 usedinmeasurement.

2、Anti-interference ability ground voltage. The instrument uses different frequency measurement, withmodernhardware and software filteringtechnology, making the instrument has a very high anti-jamming performance, stable and reliable test data. 15V power frequency (50Hz) interference voltage errorcausedonly 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. Notonlymeasure ground impedance, also measurethe 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, andcomeswith mini printer can print on-sitemeasurements.

7、The wiring labor is small, no large current line.

8、Small size, light weight, easy to carry.

The parameters of the products