北京艾諾德儀器有限公司，致力于打造中國儀器航母品牌。
北京艾諾德儀器有限公司是集專業(yè)設(shè)計(jì)、開發(fā)、生產(chǎn)與銷售于一體的*股份制企業(yè)，專注于新型材料試驗(yàn)機(jī)的研制、材料檢測(cè)技術(shù)的提高及材料試驗(yàn)方法的創(chuàng)新，是國內(nèi)的材料試驗(yàn)檢測(cè)儀器的生產(chǎn)企業(yè)。
大型地網(wǎng)接地電阻測(cè)試儀
編號(hào)：GD201311150012
規(guī)格：DWR-Ⅲ型
DWR-Ⅲ型大型地網(wǎng)接地電阻測(cè)試儀
一、儀器概述
目前在電力系統(tǒng)中，大型地網(wǎng)的接地電阻的測(cè)試目前主要采用工頻大電流三極法測(cè)量。為了防止電網(wǎng)運(yùn)行時(shí)產(chǎn)生的工頻干擾，提高測(cè)量結(jié)果的準(zhǔn)確性，絕緣預(yù)防性試驗(yàn)規(guī)程規(guī)定：工頻大電流法的試驗(yàn)電流不得小于30安培。由此，就出現(xiàn)了試驗(yàn)設(shè)備笨重，試驗(yàn)過程復(fù)雜，試驗(yàn)人員工作強(qiáng)度大，試驗(yàn)時(shí)間長(zhǎng)等諸多問題。
DWR-Ⅲ型大型地網(wǎng)接地電阻測(cè)試儀，可測(cè)變電站地網(wǎng)（4Ω）、水火電廠、微波站（10Ω）、避雷針（10Ω）多用機(jī)型，采用了新型異頻交流電源，并采用了微機(jī)處理控制和信號(hào)處理等措施，很好的解決了測(cè)試過程中的抗干擾問題，簡(jiǎn)化了試驗(yàn)操作過程，提高了測(cè)試結(jié)果的精度和準(zhǔn)確性，大大降低了試驗(yàn)人員的勞動(dòng)強(qiáng)度和試驗(yàn)成本。
二、技術(shù)指標(biāo)
1、儀器測(cè)量范圍：0～15Ω
2、測(cè)量精度： 3%
3、測(cè)量輸出電流：AC＜3A
4、測(cè)量線要求： ≥Φ1.5mm2
5、供電電源： AC220V/50HZ
6、儀器重量： 5kg
Large network grounding resistance tester
Number: GD201311150012
Specification: the DWR - Ⅲ type
DWR - Ⅲ large network grounding resistance tester
An overview, instrument
Currently in power system, the grounding resistance of large ground testing at present mainly adopts three very large power frequency current measurement method. In order to prevent grid runtime power frequency interference, improve the accuracy of measurement results, insulation preventive test procedure: big power frequency current method of test current shall not be less than 30 amperes. As a result, there is a heavy equipment test, the process is complex, test personnel working strength is big, test time is long, and many other problems.
DWR network - Ⅲ large earth grounding resistance tester, measurable substation ground network (4 Ω), water and fire power plants, microwave station Ω (10), the lightning rod (10 Ω) multi-purpose machine, adopted a new pilot frequency ac power, and adopts the microcomputer processing control and signal processing, good solve the anti-interference problem in the process of test, simplifies the test operation process, improve the precision and accuracy of test results, greatly reduce the labor intensity of the test personnel and test cost.
Second, the technical indicators
1, the instrument measuring range: 0 ~ 15 Ω
2, measuring accuracy: 3%
3, measurement output current: AC < 3 a
4, measuring line requirement: Φ was 1.5 or higher
5, power supply: AC220V / 50 hz
6, instrument weight: 5 kg
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