產品概述  Product Overview   

HLY600A大電流微歐計（回路電阻測試儀）根據(jù)中華人民共和國新的電力執(zhí)行標準DL/T845.4-2004，采用高頻開關電源技術和數(shù)字電路技術相結合設計而成。它適用于開關控制設備回路電阻的測量。其測試電流采用國家標準推薦的直流100A和200A?？稍陔娏?00A的情況下直接測得回路電阻，也可以在電流200A、400A或600A的情況下直接測得回路電阻，最后的測試結果都用數(shù)字顯示出來。該儀器測量準確、性能穩(wěn)定，符合電力、供電部門現(xiàn)場高壓開關維修和高壓開關廠回路電阻測試的要求。

The HLY600A high-current micro-ohmmeter (loop resistance tester) is designed based on the new power execution standard DL/T845.4-2004 of the People's Republic of China，utilizing a combination of high-frequency switching power supply technology and digital circuit technology。It is suitable for measuring the loop resistance of switch control equipment. Its test currents adopt the DC 100A and 200A recommended by national standards。 It can directly measure the loop resistance at a current of 100A，as well as at 200A, 400A, or 600A。The final test results are displayed digitally。This instrument provides accurate measurements and stable performance， meeting the requirements of on-site high-voltage switch maintenance by power and electricity supply departments，as well as loop resistance testing in high-voltage switch factories。

產品用途 Product Application   

該儀器適用于高壓開關接觸電阻（回路電阻）的高精度測量，同樣適用于其它需要大電流、微電阻測量的場合。

This instrument is suitable for high-precision measurement of contact resistance (loop resistance) in high-voltage switches，and it is equally applicable to other scenarios requiring large current and micro-resistance measurements。

性能特點  Performance Characteristics 

1.大電流：采用最新電源技術，能長時間連續(xù)輸出大電流，克服了脈沖式電源瞬間電流的弊端，可以有效的擊穿開關觸頭氧化膜，得到良好的測試結果。

2.抗干擾能力強：在嚴重干擾條件下，液晶屏最后一位數(shù)據(jù)能穩(wěn)定在±1個字范圍內，讀數(shù)穩(wěn)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(huán)境溫度對測量結果的影響，同時軍品接插件的使用增強了抗振性能。

4.攜帶方便：體積小、重量輕。

1. High Current:：Utilizing the latest power technology, it can continuously output high current for extended periods， overcoming the drawbacks of pulsed power's instantaneous current，This effectively breaks down the oxidation film on switch contacts，resulting in excellent test results。

2. Strong Anti-interference Capability：Under severe interference conditions，the last digit of the LCD display remains stable within ±1 digit, ensuring stable readings and excellent repeatability。

3. Long Service Life: Employing high-precision resistors，it effectively eliminates the impact of ambient temperature on measurement results。Additionally， the use of military-grade connectors enhances its vibration resistance。

4. Convenient Portability： Its small size and light weight make it easy to carry。

技術指標  Technical Specifications   

1.測量范圍：1～1999μΩ

2.分 辨 率：1μΩ

3.測試電流：DC 100A、200A、400A、600A 四檔固定輸出

4.測量精度：0.5%±1d

5.工作方式：連續(xù)

6.顯示方式：三位半LCD

7.工作電源：AC220V±10%  50Hz

8.工作環(huán)境：溫度- 10℃～40℃   濕度≤80 %RH

1. Measurement range：1-1999 μ Ω

2. Resolution: 1 μ Ω

3. Test current：Four fixed outputs of DC 100A, 200A, 400A, and 600A

4. Measurement accuracy：0.5% ± 1d

5. Working mode： continuous

6. Display mode：Three and a half digit LCD

7. Working power supply： AC220V ± 10% 50Hz

8. Working environment：Temperature -10 ℃~40 ℃ Humidity ≤ 80% RH

操作方法   Operation method   

1.按下圖接線方法接線。

                                上圖　四端子接線圖

2.儀器面板與測試線的連接處應扭緊，不得有松動現(xiàn)象。

3.應按照四端子法接線，即電流線應夾在被試品的外側，電壓線應夾在被試品的內側，電流與電壓必須同極性。

4.檢查確認無誤后，接入220V交流電，合上電源開關，儀器進入開機狀態(tài)。

5.調節(jié)“電流選擇”旋鈕，選擇要選用的電流檔位，然后按下“測量”鍵此時電阻表顯示值為所測的回路電阻值。若顯示1，則表示所測回路電阻值超量程。

6.測量完畢，斷開電源開關，將測試線夾收好，放入附件包內。

7.如果遇到什么技術問題，您可以撥打我們24小時服務熱線：027-87409251  13871255353