NAJDT Ground ContinuityTester   NAJDT接地引下線導(dǎo)通測(cè)試儀

產(chǎn)品簡(jiǎn)介

接地裝置的電氣完整性是指接地裝置中應(yīng)該接地各種電氣設(shè)備之間，接地裝置的各部分及與各設(shè)備之間的電氣連接性，即直流電阻值，也稱為電氣導(dǎo)通性。電力設(shè)備的接地引下線與地網(wǎng)的可靠、有效連接是設(shè)備安全運(yùn)行的根本保障。接地引下線是電力設(shè)備與地網(wǎng)的連接部分，在電力設(shè)備的長(zhǎng)時(shí)間運(yùn)行過程中，連接處有可能因受潮等因素影響，出現(xiàn)節(jié)點(diǎn)銹蝕、甚至斷裂等現(xiàn)象，導(dǎo)致接地引下線與主接地網(wǎng)連接點(diǎn)電阻增大，從而不能滿足電力規(guī)程的要求，使設(shè)備在運(yùn)行中存在不安全隱患，嚴(yán)重時(shí)會(huì)造成設(shè)備失地運(yùn)行。接地裝置的地下接地極及其連接部分也可能出現(xiàn)銹蝕、甚至斷裂現(xiàn)象。因此，定期對(duì)接地裝置進(jìn)行電氣完整性測(cè)試是很有必要的。

電力行業(yè)標(biāo)準(zhǔn)DL/T475-2006《接地裝置特性參數(shù)測(cè)量導(dǎo)則》規(guī)定電氣導(dǎo)通性應(yīng)選用專門的儀器進(jìn)行測(cè)量，儀器分辨率為1mΩ，準(zhǔn)確度不低于1.0級(jí)。南澳電氣（武漢）有限公司依據(jù)此標(biāo)準(zhǔn)研制的NAJDT-10A接地引下線導(dǎo)通測(cè)試儀是一種自動(dòng)化程度很高的便攜式測(cè)試儀,專門用于接地裝置的電氣完整性測(cè)試，其各項(xiàng)技術(shù)指標(biāo)均達(dá)到或優(yōu)于相關(guān)標(biāo)準(zhǔn)要求。NAJDT-10A接地引下線導(dǎo)通測(cè)試儀操作簡(jiǎn)單方便、精度高、測(cè)試速度快，復(fù)測(cè)性好、讀數(shù)直觀，是符合規(guī)程要求的理想的專用儀器，大大方便了試驗(yàn)項(xiàng)目的開展，提高了工作效率。

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

產(chǎn)品別名

接地引下線測(cè)試儀，接地引下線導(dǎo)通測(cè)試儀，接地導(dǎo)通電阻測(cè)試儀，接地導(dǎo)通測(cè)試儀，接地引下導(dǎo)線電阻測(cè)試儀

產(chǎn)品特性 

(1)電源技術(shù)：采用電源技術(shù)，輸出10A電流，能長(zhǎng)時(shí)間連續(xù)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(cè)試結(jié)果。

(2)抗干擾能力強(qiáng)：在嚴(yán)重干擾條件下，液晶屏一位數(shù)據(jù)能穩(wěn)定在±1個(gè)字范圍內(nèi)，讀數(shù)穩(wěn)定，重復(fù)性好。

(3)使用壽命長(zhǎng)：全部采用高精度電阻，有效的消除環(huán)境溫度對(duì)測(cè)量結(jié)果的影響，同時(shí)軍品接插件的使用增強(qiáng)了抗振性能。

(4)操作簡(jiǎn)單：只需按下測(cè)量鍵即可得到測(cè)量結(jié)果。測(cè)量結(jié)果采用LCD液晶背光顯示,讀數(shù)直觀,重復(fù)性好。

(5)攜帶方便：采用便攜式設(shè)計(jì)，體積小、重量輕。面板與機(jī)箱成一體結(jié)構(gòu)，具有很好的抗震性。

產(chǎn)品參數(shù)

測(cè)量范圍

1～1999mΩ

分 辨 率

1mΩ

測(cè)量電流

DC 1A、2A、5A、10A 四個(gè)固定電流檔位

測(cè)量精度

±（0.5%+2d）

測(cè)量半徑

50m

顯示方式

LCD背光顯示

工作方式

連續(xù)

工作電源

AC220V ±10%

電源頻率

50Hz

環(huán)境溫度

-10℃～40℃

環(huán)境濕度

≤80% RH

體   積

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)