NAJDT接地引下线导通测试仪

产品简介

接地装置的电气完整性是指接地装置中应该接地各种电气设备之间，接地装置的各部分及与各设备之间的电气连接性，即直流电阻值，也称为电气导通性。电力设备的接地引下线与地网的可靠、有效连接是设备安全运行的根本保障。接地引下线是电力设备与地网的连接部分，在电力设备的长时间运行过程中，连接处有可能因受潮等因素影响，出现节点锈蚀、甚至断裂等现象，导致接地引下线与主接地网连接点电阻增大，从而不能满足电力规程的要求，使设备在运行中存在不安全隐患，严重时会造成设备失地运行。接地装置的地下接地极及其连接部分也可能出现锈蚀、甚至断裂现象。因此，定期对接地装置进行电气完整性测试是很有必要的。

电力行业标准DL/T475-2006《接地装置特性参数测量导则》规定电气导通性应选用专门的仪器进行测量，仪器分辨率为1mΩ，准确度不低于1.0级。南澳电气（武汉）有限公司依据此标准研制的NAJDT-10A接地引下线导通测试仪是一种自动化程度很高的便携式测试仪, 专门用于接地装置的电气完整性测试，其各项技术指标均达到或优于相关标准要求。NAJDT-10A接地引下线导通测试仪操作简单方便、精度高、测试速度快，复测性好、读数直观，是符合规程要求的理想的专用仪器，大大方便了试验项目的开展，提高了工作效率。

NAJDT-10A接地引下线导通测试仪适用于适用于电力设备接地引下线与接地网（或相邻设备）之间导通电阻值的测量，同样适用于低阻值电阻的测量。

产品别名

接地引下线测试仪，接地引下线导通测试仪，接地导通电阻测试仪，接地导通测试仪，接地引下导线电阻测试仪

产品特性 

(1)电源技术：采用最新电源技术，输出10A电流，能长时间连续工作，克服了脉冲式电源瞬间电流的弊端，可以有效的击穿触头氧化膜，得到良好的测试结果。

(2)抗干扰能力强：在严重干扰条件下，液晶屏最后一位数据能稳定在±1个字范围内，读数稳定，重复性好。

(3)使用寿命长：全部采用高精度电阻，有效的消除环境温度对测量结果的影响，同时接插件的使用增强了抗振性能。

(4)操作简单：只需按下测量键即可得到测量结果。测量结果采用LCD液晶背光显示,读数直观,重复性好。

(5)携带方便：采用便携式设计，体积小、重量轻。面板与机箱成一体结构，具有很好的抗震性。

产品参数

NAJDT Grounding Down-Conductor Continuity Tester

Product Overview

The electrical integrity of grounding devices refers to the conductivity (measured as DC resistance) between various electrical equipment and different parts of the grounding system, also known as electrical continuity. Reliable and effective connection between power equipment's grounding down-conductor and the grounding grid is essential for safe operation. Over time, connections may corrode or even break due to moisture, leading to increased resistance at contact points. This compromises compliance with power regulations, creating potential safety hazards, and in severe cases, may result in ungrounded operation. Underground grounding electrodes and their connections are also susceptible to corrosion or breakage. Therefore, regular electrical continuity testing is critical.

According to DL/T475-2006 Guidelines for Measuring Characteristic Parameters of Grounding Devices (Power Industry Standard), continuity testing must be performed with dedicated instruments featuring 1mΩ resolution and ≥1.0 accuracy. Developed by Nanao Electric (Wuhan) Co., Ltd., the NAJDT-10A Grounding Down-Conductor Continuity Tester is a highly automated portable device designed for such tests, meeting or exceeding all standard requirements. With user-friendly operation, high precision, fast testing, and intuitive readings, it significantly enhances workflow efficiency.

Applications:

• Measures continuity resistance between power equipment grounding down-conductors and grounding grids (or adjacent equipment).

• Suitable for low-resistance measurements.

Product Aliases

Grounding Down-Conductor Tester, Grounding Continuity Resistance Tester, Grounding Conductor Resistance Tester

Key Features

1. Advanced Power Technology: Delivers stable 10A DC output for prolonged operation, effectively penetrating contact oxide layers for accurate results.

2. Strong Anti-Interference: LCD displays stable readings (±1 digit) even in high-noise environments.

3. Long Service Life: High-precision resistors minimize temperature-induced errors; rugged connectors enhance vibration resistance.

4. User-Friendly: One-button operation with backlit LCD for clear, repeatable results.

5. Portable Design: Compact, lightweight (5kg), and shockproof structure for field use.

Technical Parameters