Abstract - The test of low-voltage switchgear (contactor,relay, breaker etc.) includes electric longevity and electriccharacters of turn on-off. The fast calculation and analysis methods for electric parameters were investigated. Muchattention has been paid to the effect of performance in lowvoltage switchgear caused by arcing time, over-voltage of contact, power factor and harmonic. On the base of studyingcharacter of test, such as more measured signals, severity of disturbance from strong electromagnetism, shorter interval and vast data in test, an efficient testing system has been designed with the function of data acquisition and processing. This system possesses six channels of voltage signal and three channels of current signal. The frequency of data collecting in every channel is 1MS/s and the isolation voltage exceeds 2500V. The results show that all requirements in test have been implemented

摘要 - 低電壓開關設備的測試 (電流接觸器，繼電器, 斷路器等)旋轉(zhuǎn)開關包括的使用壽命和電路特性。 電路參數(shù)的快速計算和分析方法的選取。應該更多注意對由燃弧時間引起的低電壓開關設備中的性能效果,連接線路通過的高電壓,激勵因數(shù)和諧波。在了解測試特性的基礎上,例如在測試中的比較多的測量信號, 來自強大電磁的強烈干擾，比較短間隔和大量的數(shù)據(jù), 設計一個有效的測試系統(tǒng)用來進行數(shù)據(jù)獲取和處理。 這個系統(tǒng)包括六個電壓信號通道和三個電流通道。在每個通道中數(shù)據(jù)收集的頻率是 1MS/ s ，絕緣電壓超過 2500V 。結果要求測試中的所有需求都要全部實現(xiàn)。
索引術語 - 低電壓裝置;測試;電路的參數(shù)分析;諧波的測量。