6ES7290-6AA20-0XA0 卡件就亿佳
三相绕线形异步电动机转子中有三相绕组，可以通过滑环和电刷串接外加电阻。适当增加转子串接电阻，可以减小启动电流并电动机的启动转矩。按照绕线形异步电动机启动过程中转子串接装置的不同，有串电阻启动和串频敏电阻器启动两种方法。
缓冲启动器（motor softstarter）是配合交流电动机使用的设备，在马达启动时可以暂时减少其负载及力矩，也降低启动时的涌浪电流。可以减少启动时马达及轴上的机械应力，也减少配电系统及电缆线上的电磁应力，延长系统的寿命。
马达缓冲启动器有机械式的、电子式的，也有混合式的
1)机械式的马达缓冲启动器包括了离合器以及不同种类，可以传递力矩的联轴器（例如液力耦合器、磁力耦合器或是用金属球等），类似扭矩限制器。
2)电子式的马达缓冲启动器是可以用降低输入电压或是电流来暂时降低力矩的设备，也可以是暂时性调整马达电路接线方式的设备。
感应马达在启动时的突入电流会是额定电流的7至10倍，启动转矩会是额定电流的三倍。增加的力矩会使机械产生突然的应力，会减少设备的寿命。高突入电流也会给电源带来应力，可能造成电压骤降，会让一些敏感设备的寿命下降。
缓冲启动器可以避免这些副作用，已发展出许多不同控制的方式，有些是控制电压，有时则是用像离合器之类的机械设备。缓冲启动器的型录会列出其个自的电流及转矩特性。若是高突入转矩，会使设备有高机械应力，会增加维修成本及磨损。而高电流及高电流峰值则会电费（依电流峰值计算），会增加电源及发电机需要提供的电力。
缓冲启动器在马达启动过程中，会持续控制马达的电压。可以调整马达，设法符合机械的特性，可以让机械平顺的加速，可以延长设备寿命、提升运作性能，可以让运作比较平顺。电子式的缓冲启动器可以是控制马达电压及电流的固态电子器件设备。缓冲启动器可以串接在电源和马达之间，或是连接到在Δ接马达的Δ回路内，控制每一个绕组的电压。固态电子缓冲启动器可以控制马达的一相或是多相，以达到缓冲启动的效果。一般而言，电压是由反并联连接的硅控整流器（晶闸管），在一些三相控制的场合内，控制元件可以改为反并联连接的硅控整流器及二极管。
另一种限制启动电流的方式是串联电抗器。若使用无铁心的电抗器作为串联电抗器。可以设计高效且可靠缓冲启动器，可以适合功率/电压从25kW 415 V到30 MW 11kV的各种三相马达。在泵、压缩机、风扇等应用中，常常使用无铁心电抗器的缓冲启动器。若需要高启动转矩的应用，会使用其他的方法。
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1PC YOKOGAWA DCS NC4* B Nest CommonCard
1PC YOKOGAWA DCS PS32*A
1PC YOKOGAWA DCS SB401-10 S1
1PC YOKOGAWA DCS SI11*B
1PC YOKOGAWA DCS SI11*B YIWX
1PC YOKOGAWA DCS ST6 *A MultipointStatus Input
1PC YOKOGAWA DCS ST6 *A MULTIPOINTSTATUS INPUT 2RTJ
1PC Yokogawa DX112-1-2 6 channelsDigital Recorder
1PC YOKOGAWA EA1*A
1PC YOKOGAWA ECO*A / EC0*A
1PC YOKOGAWA ER5*B RTD input card
1PC YOKOGAWA ER5*B RTD INPUT CARDAF65
1PC YOKOGAWA F3WD64-3P PLC
1PC YOKOGAWA PLC module F3YD14F3YD14-5A
1PC YOKOGAWA PLC module F3YD64-1F
1PC YOKOGAWA Yokogawa ADM11
1PC YOKOGAWA YokogawaEJA210A-DHSG4F5B-90NN Transmitter
1pc of YOKOGAWA PS-033-0101 Power Supply Circuit Board
1PC PW482-10 YOKOGAWA DCS 60 days warranty
1PC sed Yokogawa CPU F3LC11
1pc UR10000 436106 YOKOGAWA Chart Recorder
1pc UR10000 436106 YOKOGAWA Chart Recorder PLC S5
1PC UR10000 436106 YOKOGAWA Chart Recorder xhg12
1PC F3SP76-7S YOKOGAWA CPU
1PC F3SP76-7S YOKOGAWA CPU 0RV0
1PC YOKOGAWA AAP135-S00
1PC YOKOGAWA AAT145-S00
1PC YOKOGAWA ADM12
1PC YOKOGAWA ADM12 #ZL02
1PC YOKOGAWA ADM52
1PC YOKOGAWA ADM52 #ZL02
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1PC YOKOGAWA ADM52C #ZL02
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1PC YOKOGAWA AMM32 #ZL02
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1PC Yokogawa ATD5D-00 connector
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1PC YOKOGAW Yokogawa Servo UD1006B0AA -1SAN /01S0680 xhg33
1PC Yokogawa /YOKOGAWA VJA1-016-A6N0 xhg61
1PC YOKOGAWA 15W/220V RM-H7C15ZM 7RH1-Z25 xhg33
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1PC YOKOGAWA AAI543 -S00 S1 xhg54
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1pc YOKOGAWA BARD -400*A I3AGF5 DCS GY01004
1PC Yokogawa Controller UD1BG3-004N-1AB-1SB-N-CN
1PC YOKOGAWA CONTROLLER UD1BG3-004N-1AB-1SB-N-CN 9S8C
1PC YOKOGAWA CP11*C
1pc Yokogawa CPU F3LC11-1F
1PC Yokogawa CPU F3PP08 xhg19
1pc Yokogawa CPU F3SP25
1PC Yokogawa CPU F3VP35-5N xhg19
1PC Yokogawa CPU F3VP35-5N/A xhg19
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1PC Yokogawa CPW xhg19
1PC YOKOGAWA CS3000 DCS system module AAP135-S00
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1PC YOKOGAWA CS3000 DCS System Module AAP135-S00
1PC YOKOGAWA CS3000 DCS SYSTEM MODULE AAP135-S00 BGMB
1PC YOKOGAWA CS3000 DCS system module AAP135-S00 HOI8
1PC YOKOGAWA DCS AAI143-S00 xhg54
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1pc YOKOGAWA DCS AAI143-S00+ATK4A-00 Free Ship
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1PC YOKOGAWA DCS AAI543-H00 S1
1PC YOKOGAWA DCS AAI543-H00 S1
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1PC YOKOGAWA DCS AAI543-H00 S1 4ZA0
1PC YOKOGAWA DCS AAI543-H00 S1 SWCV
1PC YOKOGAWA DCS AAM10 Analogue input module
1PC YOKOGAWA DCS AAM50 Analog output module
1PC YOKOGAWA DCS AAR145-S00 (RTD/POT Input Module 16channels)
1PC YOKOGAWA DCS AAR145-S00 (RTD/POT INPUT MODULE 16 CHANNELS)MHLM
1PC YOKOGAWA DCS AD5*D
1PC YOKOGAWA DCS AD5*D PZPM
1PC YOKOGAWA DCS ADM12C
1PC YOKOGAWA DCS ADM12C Z1F9
1PC YOKOGAWA DCS ADV551-P00/D5A00
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1PC YOKOGAWA DCS CENTUM-XL data acquisition card
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1PC YOKOGAWA DCS EB501-10
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1pc YOKOGAWA DCS EC401-10 s2 FreeShip
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1PC YOKOGAWA DCS EC401-10 S2 FREE SHIPPFQM
1PC YOKOGAWA DCS ESB BUS,ADDRESS PLC
1PC YOKOGAWA DCS ESB BUS,ADDRESS PLC Z1SJ
1PC YOKOGAWA DCS MAC2*B
1PC YOKOGAWA DCS MAC2*B #ZL02
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1PC YOKOGAWA DCS NP54*C Enhanced MFCU Processor Card #ZL02
1PC YOKOGAWA DCS PW482-10