1756-OA16I
1756-OA16I瞬時(shí)停電保護(hù)。對(duì)于數(shù)毫秒以內(nèi)的瞬時(shí)停電,控制電路工作正常。但瞬時(shí)停電時(shí)間在10s以上時(shí),通常會(huì)使控制電路誤動(dòng)作,主電路也不能供電,所以檢出后使逆變器停止工作。
接地過(guò)電流保護(hù)。逆變器負(fù)載側(cè)接地設(shè)計(jì),為了保護(hù)逆變器,有時(shí)要有接地過(guò)電流保護(hù)功能。但為了確保人身安全,需要裝設(shè)漏電斷路器。冷卻風(fēng)機(jī)異常。有冷卻風(fēng)機(jī)的裝置,當(dāng)風(fēng)機(jī)異常時(shí)裝置內(nèi)的溫度將上升。因此采用風(fēng)機(jī)熱繼電器或器件散熱片傳感器,檢出異常后停止逆變器。
瞬時(shí)過(guò)電流保護(hù)。由于逆變器負(fù)載側(cè)短路等,流過(guò)逆變器器件的電流達(dá)到異常值(超過(guò)容許值)時(shí),瞬時(shí)停止逆變器運(yùn)轉(zhuǎn),切斷電流。變流器的輸出電流達(dá)到異常值,也同樣停止逆變器運(yùn)轉(zhuǎn)。
過(guò)載保護(hù)。逆變器輸出電流超過(guò)額定值,且持續(xù)通達(dá)規(guī)定的時(shí)間以上,為了防止逆變器期間、線路等損壞要停止運(yùn)轉(zhuǎn)。恰當(dāng)?shù)谋Wo(hù)需要反時(shí)限特性,采用熱繼電器或者電子熱保護(hù)(使用電子電路)。過(guò)負(fù)載是由于負(fù)載的GD(慣性)過(guò)大或因負(fù)載過(guò)大使電機(jī)堵轉(zhuǎn)而產(chǎn)生的。
再生過(guò)電壓保護(hù)。采用逆變器使電動(dòng)機(jī)快速時(shí),由于再生功率直流電路電壓將升高,有時(shí)超過(guò)容許值。可以采取停止逆變器運(yùn)轉(zhuǎn)或快速減速的辦法,防止過(guò)電壓。瞬時(shí)停電保護(hù)。對(duì)于數(shù)毫秒以內(nèi)的瞬時(shí)停電,控制電路工作正常。但瞬時(shí)停電時(shí)間在10s以上時(shí),通常會(huì)使控制電路誤動(dòng)作,主電路也不能供電,所以檢出后使逆變器停止工作。
接地過(guò)電流保護(hù)。逆變器負(fù)載側(cè)接地設(shè)計(jì),為了保護(hù)逆變器,有時(shí)要有接地過(guò)電流保護(hù)功能。但為了確保人身安全,需要裝設(shè)漏電斷路器。冷卻風(fēng)機(jī)異常。有冷卻風(fēng)機(jī)的裝置,當(dāng)風(fēng)機(jī)異常時(shí)裝置內(nèi)的溫度將上升。因此采用風(fēng)機(jī)熱繼電器或器件散熱片傳感器,檢出異常后停止逆變器。
Fu Zhou ZhuoKai Electric Co., Ltd.
公司簡(jiǎn)稱:卓凱電子
公司地址:福州市臺(tái)江區(qū)金融街萬(wàn)達(dá)廣場(chǎng)二期A2#寫字樓11層12室
公司聯(lián)絡(luò)人:李工(銷售工程師)
Tel:0591-62182520
Fax:0591-62032566
Phone:13696852881
商務(wù)QQ:1273632994
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