NAJDT Ground Continuity Tester    NAJDT接地引下線導通測試儀

產品簡介

接地裝置的電氣完整性是指接地裝置中應該接地各種電氣設備之間，接地裝置的各部分及與各設備之間的電氣連接性，即直流電阻值，也稱為電氣導通性。電力設備的接地引下線與地網的可靠、有效連接是設備安全運行的根本保障。接地引下線是電力設備與地網的連接部分，在電力設備的長時間運行過程中，連接處有可能因受潮等因素影響，出現節點銹蝕、甚至斷裂等現象，導致接地引下線與主接地網連接點電阻增大，從而不能滿足電力規程的要求，使設備在運行中存在不安全隱患，嚴重時會造成設備失地運行。接地裝置的地下接地極及其連接部分也可能出現銹蝕、甚至斷裂現象。因此，定期對接地裝置進行電氣完整性測試是很有必要的。

電力行業標準DL/T475-2006《接地裝置特性參數測量導則》規定電氣導通性應選用專門的儀器進行測量，儀器分辨率為1mΩ，準確度不低于1.0級。南澳電氣（武漢）有限公司依據此標準研制的NAJDT-10A接地引下線導通測試儀是一種自動化程度很高的便攜式測試儀, 專門用于接地裝置的電氣完整性測試，其各項技術指標均達到或優于相關標準要求。NAJDT-10A接地引下線導通測試儀操作簡單方便、精度高、測試速度快，復測性好、讀數直觀，是符合規程要求的理想的儀器，大大方便了試驗項目的開展，提高了工作效率。

NAJDT-10A接地引下線導通測試儀適用于適用于電力設備接地引下線與接地網（或相鄰設備）之間導通電阻值的測量，同樣適用于低阻值電阻的測量。

產品別名

接地引下線測試儀，接地引下線導通測試儀，接地導通電阻測試儀，接地導通測試儀，接地引下導線電阻測試儀

產品特性 

(1)電源技術：采用*電源技術，輸出10A電流，能長時間連續工作，克服了脈沖式電源瞬間電流的弊端，可以有效的擊穿觸頭氧化膜，得到良好的測試結果。

(2)抗干擾能力強：在嚴重干擾條件下，液晶屏*一位數據能穩定在±1個字范圍內，讀數穩定，重復性好。

(3)使用壽命長：全部采用高精度電阻，有效的消除環境溫度對測量結果的影響，同時接插件的使用增強了抗振性能。

(4)操作簡單：只需按下測量鍵即可得到測量結果。測量結果采用LCD液晶背光顯示,讀數直觀,重復性好。

(5)攜帶方便：采用便攜式設計，體積小、重量輕。面板與機箱成一體結構，具有很好的抗震性。

產品參數

測量范圍	1～1999mΩ
分 辨 率	1mΩ
測量電流	DC 1A、2A、5A、10A 四個固定電流檔位
測量精度	±（0.5%+2d）
測量半徑	50m
顯示方式	LCD背光顯示
工作方式	連續
工作電源	AC220V ±10%
電源頻率	50Hz
環境溫度	-10℃～40℃
環境濕度	≤80% RH
體    積	300mm×270mm×200mm
重    量	5kg(不含附件)

 

Product introduction

The electrical integrity of earthing device is the electrical connectivity among all kinds of electrical devices that should be grounded or the electrical connectivity between ground equipment all parts and devices, it is DC resistance value; it is also known as electrical conductivity. Ground down lead and earth mat of electrical equipment reliable and effective connection is the fundamental guarantee of instrument safety operation. Ground down lead is the connection part of electrical equipment and earth mat. In the long-term running, the connection part may be rusty even ruptured due to moisture and other factors, which will cause the resistance increases which at connection point of ground down lead and the main earth mat, and thus cannot meet the requirements of electrical power regulations and standard. It also cause the instrument hides danger in work, seriously even cause the instrument run in lost ground status. Underground ground electrode and its connection parts may rusty, and even ruptured. Therefore, it is necessary to regularly do the electrical integrity test of grounding devices.

Electric Power Industry Standard DL/T475-2006 "Earthing Device Characteristic Parameters Measurement Guide" provides that the electrical conductivity should use special instruments to measure. The instrument resolution is 1mΩ; accuracy is not less than 1.0 . Based on this standard, our company designed this high degree of automation and portable tester. It is specially used to test the electrical integrity of earthing device; its technical specification has reached or exceeded the relevant standards. The instrument is characterized by simple operation, high accuracy, fast test speed, good reproducibility, and intuitive readings. It is an ideal special instrument that meets the requirements of regulations and standard.

Also called name

Ground Continuity Tester, Ground deflectors tester, ground deflectors conduction tester, ground resistance tester, earth continuity tester, ground resistance tester cited under the wire

The Characteristics of the products

1. Power technology: For latest power supply technology, the instrument outputs 10A current and can continuously work for a long time which overcomes the weakness of instantaneous current produced by pulsed power. It can effectively puncture the oxide of the switches and then get precise results.

2. Strong anti-interference ability: The last number of test data will stably show in the LCD screen only with ±1 error even in strong Interference situation.

3. Long service life: All the precise resistances used in the instrument can reduce the temperature's impact on the measurement results and military connectors can enhance vibration resistance.

4. Simple operation: just pressing "test" key, you can get the measured result. The LCD backlight display is easy for reading and has good reproducibility.

5. Convenience: Small size, light weight, and easy to carry. Panels and chassis is an organic whole that having good shock resistance.

The parameters of the products 

1. Measurement Range: 1～1999μΩ

2. Resolution: 1μΩ

3. Test Current: DC 1A, 2A, 5A, 10A.Four fixed current input selections.

4. Measurement Accuracy: ±(0.5%+2d)

5. Measuring Radius: 50 m

6. Display: LCD backlight display

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)