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ETHL-100A回路電阻測試儀

發布日期：2025-01-05
訪問次數：871
地址：上海寶山

ETHL-100A回路電阻測試儀是根据中华人民共和国新电力执行标准DL/T845.4-2004，采用高频开关电源技术和数字电路技术相结合设计而成。它适用于开关控制设备回路电阻的测量。其测试电流采用国家标准推荐的直流100A。可在电流100A的情况下直接测得回路电阻，

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産品描述

ETHL-100A回路電阻測試儀目前，電力系統中普遍采用常規的QJ44型雙臂直流電橋測量變壓器線圈的直流電阻、高壓斷路器的回路電阻，而這類電橋的測試電流僅爲m*，難以發現變壓器線圈導電回路導體截面積減少的缺陷。在測量高壓開關導電回路的回路電阻時，由于受到油膜和動靜觸點間氧化層的影響，測量的電阻值偏大若幹倍，掩蓋了真實的回路電阻值。因此，電力部標准SD301-88《交流500KV電氣設備交接和預防性試驗規程》和新版《電氣設備預防性試驗規程》對斷路器、隔離開關回路電阻的測量電流作出不小于100A的規定，以確保測量的准確度。
ETHL-100A回路電阻測試儀是根據中華人民共和國新電力執行標准DL/T845.4-2004，采用高頻開關電源技術和數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准推薦的直流100A。可在電流100A的情況下直接測得回路電阻，並用數字顯示出來。該儀器測量准確、性能穩定，符合電力、供電部門現場高壓開關維修和高壓開關廠回路電阻測試的要求。
特點：
1.大電流：采用新電源技術，能長時間連續輸出大電流，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.抗幹擾能力強：在嚴重幹擾條件下，液晶屏Z後一位數據能穩定在±1個字範圍內，讀數穩定，重複性好。
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jun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。

産品詳情

技術指標：
1、測量範圍：1～1999μΩ
2、分辨率：1μΩ
3、测试电流：DC 100A
4、測量精度：0.5%
5、显示方式：电流：三位半LCD
电阻：三位半LCD
6、工作电源：AC220V±10% 50Hz
7、工作环境：温度- 10℃～40℃ 湿度：≤80 %RH
8、体积：300×270×200 mm3
9、重量：5Kg（不含附件）

100A(100μΩ-20mΩ)±0.2%
10、報警電阻可滿量程設定

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