专业生产NAJDT接地引下线导通测试仪

 najdt ground continuitytester   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，同时军品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

测量范围

1～1999mΩ

分 辨 率

1mΩ

测量电流

dc 1a、2a、5a、10a 四个固定电流档位

测量精度

±（0.5%+2d）

测量半径

50m

显示方式

lcd背光显示

工作方式

连续

工作电源

ac220v ±10%

电源频率

50hz

环境温度

-10℃～40℃

环境湿度

≤80% rh

体   积

300mm×270mm×200mm

重   量

5kg(不含附件)

product introduction

the electrical integrity of earthingdevice is the electrical connectivity among all kinds of electricaldevices that should be grounded or the electrical connectivitybetween ground e all parts and devices, it is dc resistancevalue; it is also known as electrical conductivity. ground downlead and earth mat of electrical e reliable and effectiveconnection is the fundamental guarantee of instrument safetyoperation. ground down lead is the connection part of electricale and earth mat. in the long-term running, the connectionpart may be rusty even ruptured due to moisture and other factors,which will cause the resistance increases which at connection pointof ground down lead and the main earth mat, and thus cannot meetthe re of electrical power regulations and standard. italso cause the instrument hides danger in work, seriously evencause the instrument run in lost ground status. underground groundelectrode and its connection parts may rusty, and even ruptured.therefore, it is necessary to regularly do the electrical integritytest of grounding devices.

electric power industry standarddl/t475-2006 "earthing device characteristic parameters measurementguide" provides that the electrical conductivity should use specialinstruments to measure. the instrument resolution is1mΩ; accuracy is not less than 1.0 class. basedon this standard, our company designed this high degree ofautomation and portable tester. it is specially used to test theelectrical integrity of earthing device; its technicalspecification has reached or exceeded the relevant standards. theinstrument is characterized by simple operation, high accuracy,fast test speed, good reproducibility, and intuitive readings. itis an ideal special instrument that meets the re ofregulations and standard.

alsocalled name

ground continuity tester, grounddeflectors tester, ground deflectors conduction tester, groundresistance tester, earth continuity tester, ground resistancetester cited under the wire

the characteristics of theproducts

1. power technology: for latest powersupply technology, the instrument outputs 10a current and cancontinuously work for a long time which overcomes the weakness ofinstantaneous current produced by pulsed power. it can effectivelypuncture the oxide layer of the switches and then get preciseresults.

2. strong anti-interference ability: thelast number of test data will stably show in the lcd screen onlywith ±1 error even in strong interferencesituation.

3. long service life: all the preciseresistances used in the instrument can reduce the temperature'simpact on the measurement results and military connectors canenhance vibration resistance.

4. simple operation: just pressing"test" key, you can get the measured result. the lcd backlightdisplay is easy for reading and has goodreproducibility.

5. convenience: small size, lightweight, and easy to carry. panels and chassis is an organic wholethat having good shock resistance.

the parameters of theproducts 

1. measurement range:1～1999μΩ

2. resolution:1μΩ

3. test current: dc 1a, 2a, 5a, 10a.fourfixed current input selections.

4. measurement accuracy:±(0.5%+2d)

5. measuring radius: 50 m

6. display: lcd backlightdisplay

7. work mode: continuous

8. power supply:ac220v±10% 50hz

9. work environment:

  temperature:-10℃～40℃humidity: ≤80 %rh

10. dimension:300mm×270mm×200mm

   weight:5kg(accessories excluded)