描述
電壓繼電器是一種常用的電磁式繼電器,電壓繼電器用于電力拖動系統(tǒng)的電壓保護(hù)和控制。其線圈并聯(lián)接入主電路,感測主電路的線路電壓;觸點(diǎn)接于控制電路,為執(zhí)行元件。按吸合電壓的大小,電壓繼電器可分為過電壓繼電器和欠電壓繼電器。過電壓繼電器(FV)用于線路的過電壓保護(hù),其吸合整定值為被保護(hù)線路額定電1.05~1.2倍。當(dāng)被保護(hù)的線路電壓正常時,銜鐵不動作;當(dāng)被保護(hù)線路的電壓高于額定值,達(dá)到過電壓繼電器的整定值時,銜鐵吸合,觸點(diǎn)機(jī)構(gòu)動作,控制電路失電,控制接觸器及時分?jǐn)啾槐Wo(hù)電路。欠電壓繼電器(KV)用于線路的欠電壓保護(hù),其釋放整定值為線路額定電壓的0.1~0.6倍。當(dāng)被保護(hù)線路電壓正常時,銜鐵可靠吸合;當(dāng)被保護(hù)線路電壓降至欠電壓繼電器的釋放整定值時,銜鐵釋放,觸點(diǎn)機(jī)構(gòu)復(fù)位,控制接觸器及時分?jǐn)啾槐Wo(hù)電路。零電壓繼電器是當(dāng)電路電壓降低到5%~25%UN時釋放,對電路實(shí)現(xiàn)零電壓保護(hù)。用于線路的失壓保護(hù)。中間繼電器實(shí)質(zhì)上是一種電壓繼電器。它的特點(diǎn)是觸點(diǎn)數(shù)目較多,電流容量可增大,起到中間放大(觸點(diǎn)數(shù)目和電流容量)的作用。
產(chǎn)品承
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢價格,大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門子,摩托羅拉,安川。力士樂。ACSO,橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
113 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Pump
112 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Pump
110 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Pump
114Sundstrand-S?auer-Danfoss Hydraulic Series 27 Pump
111 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Pump
NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 20 Pump
NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Pump
Sundstrand-Saue?r-Danfoss Hydraulic Series 26 Pump A20
Sundstrand-Saue?r-Danfoss Hydraulic Series 26 Pump A21
Sundstrand-Saue?r-Danfoss Hydraulic Series 25 Pump CU
Sundstrand-Saue?r-Danfoss Hydraulic Series 25 Pump DL
Sundstrand-Saue?r-Danfoss Hydraulic Series 25 Pump DD
NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 25 Pump
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 054
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 047
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 053
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 048
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 049
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 052
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 051
NEW Sundstrand-Saue?r-Danfoss Hydraulic 25 Pump 050
103 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Motor
102 Sundstrand-Saue?r-Danfoss Hydraulic Series 27 Motor
NEW Sundstrand-Saue?r-Danfoss Hydraulic Fixed Motor
DANFOSS 400 HP COMBINATION SOFT START
Enlarge
Sundstrand-Saue?r-Danfoss Hydraulic Series 26 Motor DR
Sundstrand-Saue?r-Danfoss Hydraulic Series 26 Motor DQ
Sundstrand-Saue?r-Danfoss Hydraulic Series 26 Motor DP
PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家