描述

對(duì)斷相故障信號(hào)的采樣。如上所述，電動(dòng)機(jī)的斷相故障表現(xiàn)為電源缺相、電動(dòng)機(jī)電纜斷路、電動(dòng)機(jī)繞組斷路等不同故障內(nèi)容，若采用對(duì)三相電源電壓進(jìn)行采樣的方法，僅能對(duì)電源缺相故障進(jìn)行保護(hù)，無(wú)法完成對(duì)后兩種缺相故障的檢測(cè)，是不究竟的一個(gè)方法。根本的方法，是采用對(duì)三相電流進(jìn)行采樣來(lái)判斷缺相故障的方法，對(duì)三種缺相故障都能做出準(zhǔn)確反應(yīng)，采取相應(yīng)的技術(shù)措施，還能對(duì)三相電流不平衡作出判斷。

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主營(yíng)：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國(guó)西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（福克斯波羅）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場(chǎng)輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂(lè)）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

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