NADWG大地网接地电阻测试仪

产品简介 

NADWG大地网接地电阻测试仪，可测变电站地网（4Ω）、水火电厂、微波站（10Ω）、避雷针（10Ω）多用机型，采用了新型变频交流电源，并采用了微机处理控制和信号处理等措施，很好的解决了测试过程中的抗干扰问题，简化了试验操作过程，提高了测试结果的精度和准确性，大大降低了试验人员的劳动强度和试验成本。

NADWG大地网接地电阻测试仪适用于测试各类接地装置的工频接地阻抗、接触电压、跨步电压、等工频特性参数以及土壤电阻率。本仪器采用异频抗干扰技术，能在强干扰环境下准确测得工频50Hz下的数据。测试电流最大5A，不会引起测试时接地装置的电位过高，同时它还具有极强的抗干扰能力，故可以在不停电的情况下进行测量。

产品别名

地网接地电阻测试仪，大地网接地电阻测试仪，大型地网接地电阻测试仪

产品特性

1、测量的工频等效性好。测试电流波形为正弦波，频率仅与工频相差为5Hz，使用45Hz 和55Hz 两种频率进行测量。

2、抗干扰能力强。本仪器采用异频法测量，配合现代软硬件滤波技术，使得仪器具有很高的抗干扰性能，测试数据稳定可靠。

3、精度高。基本误差仅0.005Ω，可用来测量接地阻抗很小的大型地网。

4、功能强大。可测量电流桩，电压桩的接地电阻，地网的接地电阻，导通电阻,土壤电阻率。

5、操作简单。中英文菜单式操作，直接显示出测量结果。

6、布线劳动量小，无需大电流线。

NADWG Large Ground Grid Resistance Tester

Product Description
The NADWG Large Ground Grid Resistance Tester is a versatile instrument designed for measuring grounding systems in substations (4Ω), hydroelectric/thermal power plants, microwave stations (10Ω), and lightning rods (10Ω). Incorporating advanced frequency-conversion AC power technology and microprocessor-controlled signal processing, it effectively eliminates interference during testing, simplifies operation procedures, improves measurement accuracy, and significantly reduces operator workload and testing costs.

Applications
The NADWG tester is suitable for measuring various grounding system parameters including:

• Power frequency grounding impedance

• Touch voltage

• Step voltage

• Soil resistivity

Utilizing advanced frequency-separation anti-interference technology, the instrument can accurately measure 50Hz power frequency data even in high-interference environments. With a maximum test current of 5A, it prevents excessive potential rise in grounding devices during measurement while maintaining excellent anti-interference capability, enabling live-system testing without power interruption.

Product Aliases
Ground Grid Resistance Tester
Large-scale Ground Grid Resistance Tester
Major Ground Grid Resistance Tester

Key Features

1、Excellent Power Frequency Equivalence
Uses pure sine wave test currents at 45Hz and 55Hz (±5Hz from standard 50Hz) for accurate power frequency simulation.

2、Superior Anti-interference Performance
The frequency-separation measurement method combined with modern hardware/software filtering ensures stable and reliable results in high-noise environments.

3、High Precision Measurement
Basic error of just 0.005Ω enables accurate testing of large ground grids with extremely low impedance.

4、Comprehensive Functionality
Capable of measuring:

• Current/voltage pole resistance

• Ground grid resistance

• Continuity resistance

• Soil resistivity

  5、User-friendly Operation
  Features bilingual (Chinese/English) menu interface with direct measurement result display.

  6、Reduced Wiring Complexity
  Eliminates the need for heavy current cables, significantly simplifying field setup.