6GT2801-3AB10 亿佳购开心
电流型工作原理是整流电路将电网来的交流电转换成直流电;再经三相桥式逆变电路转变为频率可调的交流电,供给推进电动机,电流型变频器的直流中间环节,采用大电感滤波。
电压型变频器与电流型变频器同属于交一直一交变频器,也由整流器、滤波器、逆变器三部分组成。工作原理也是整流电路将电网来的交流电转换成直流电;再经三相桥式逆变电路转变为频率可调的交流电,供给推进电动机,电压型变频器的直流中间环节采用大电容。
软启动的电压由零慢慢提升到额定电压,这样电机在启动过程中的启动电流,就由过去过载冲击电流不可控制变成为可控制。并且可根据需要调节启动电流的大小。电机启动的全过程都不存在冲击转矩,而是平滑的启动运行。
软启动器(soft starter)是一种集电机软起动、软停车、多种保护功能于一体的新颖电机控制装置,国外称为Soft Starter。它的主要构成是串接于电源与被控电机之间的三相反并联晶闸管及其电子控制电路。运用不同的方法,控制三相反并联晶闸管的导通角,使被控电机的输入电压按不同的要求而变化,就可实现不同的功能。软起动器和变频器是两种不同用途的产品。变频器是用于需要调速的地方,其输出不但改变电压而且同时改变频率;软起动器实际上是个调压器,用于电机起动时,输出只改变电压并没有改变频率。变频器具备所有软起动器功能,但它的价格比软起动器贵得多,结构也复杂得多。电动机软起动器是运用串接于电源与被控电机之间的软启动器,控制其内部晶闸管的导通角,使电机输入电压从零以预设函数关系逐渐上升,直至启动结束,赋予电机全电压,即为软启动,在软起动过程中,电机起动转矩逐渐增加,转速也逐渐增加。
软启器采用三相反并联晶闸管作为调压器,将其接入电源和电动机定子之间。这种电路如三相全控桥式整流电路。使用软启动器启动电动机时,晶闸管的输出电压逐渐增加,电动机逐渐加速,直到晶闸管全导通,电动机工作在额定电压的机械特性上,实现平滑启动,降低启动电流,避免启动过流跳闸。待电机达到额定转速时,启动过程结束,软启动器自动用旁路接触器取代已完成任务的晶闸管,为电动机正常运转提供额 定电压,以降低晶闸管的热损耗,延长软启动器的使用寿命,其工作效率,又使电网避免了谐波污染。软启动器同时还提供软停车功能,软停车与软启动过程相反,电压逐渐降低,转速逐渐下降到零,避免自由停车引起的转矩冲击。
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Schneider/Telemecanique Push Button ZB2BW14C In Box !
Schneider/Telemecanique Push Button ZB2BW13C In Box ! QTY 20 Per Lot !
Schneider/Telemecanique Overload Relay LRD22 NIB!
Schneider/Telemecanique Overload Relay LRD12 In Box !
Schneider/Telemecanique Overload Relay LRD10 In Box !
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SCHNEIDER/TELEMECANIQUE INVERTER 200-240V ATV312H037M2
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Schneider/Telemecanique Contactor Time Delay LADR2 NIB !
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Schneider/Telemecanique Contactor LC1D32F7 In Box !
Schneider/Telemecanique Contactor LC1D18M7 In Box ! QTY 5 Per Lot !
Schneider/Telemecanique Contactor LC1D12F7 NIB !
Schneider/Telemecanique Contactor LC1D09BL In Box ! QTY 5 Per Lot !
Schneider/Telemecanique Contactor Block GVAE11 NIB !
Schneider/Telemecanique Breaker GV2ME05 NIB!
Schneider/Telemecanique Breaker Accessory GVAX385 In Box !
Schneider/Telemecanique Breaker Accessory GV2G454 NIB !
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Schneider, XAC-A03H7, Hoist Crane Push Button Pendant Station Telemecanique
Schneider TWDLCAA24DRF Telemecanique Modicon Twido PLC tested
Schneider TSX08ED12R8 Telemecanique MODICON TSX NESA Free Ship
Schneider TSX08CD12R8AS Telemecanique MODICON TSX NESA
SCHNEIDER TSX MICRO TELEMECANIQUE MODICON PLC TSX3721101 TSX 3721 101 DC
Schneider Telemecanique XBT-R400 magelis compact terminal HMI (M7)
Schneider Telemecanique XBTGT5330 Touchscreen Glass Free Ship
Schneider Telemecanique XBTGT4330 Touchscreen Glass and original
Schneider TELEMECANIQUE TSXSCP114 Free Ship #2
SCHNEIDER TELEMECANIQUE TSX17-10/20 TSX ASG 2000 --- 0% VAT INVOICE ---
Schneider Telemecanique TSX08RCOM MODICON NESA NIB
Schneider Telemecanique Touchscreen Glass XBTGT5230 XBTGT5330
Schneider Telemecanique TM2DDI16DT MODICON PLC in Box Free Ship
Schneider Telemecanique Terminal Block TSX BLK 1 24
Schneider Telemecanique SR3 XT141FU, PLC Expansion Module 14IO sn:0160
Schneider Telemecanique Relay RM4TR32 In Box #1554307
Schneider Telemecanique Relay RM4TR32 In Box
Schneider Telemecanique Relay RM4TR32
Schneider Telemecanique PLC Zelio Relay SR3B261FU Expansion module SR3XT141FU
SCHNEIDER TELEMECANIQUE PENDANT STATION SWITCH 600VAC 10A w/50' Cable
Schneider Telemecanique Motor Circuit Breaker GV3ME63 40-63A Original in Box
Schneider Telemecanique Motor Circuit Breaker 56-80A GV3ME80 Original in box
Schneider Telemecanique LC1D65A 65A 3 Pole Contactor Motor Starter w/Over Load
Schneider Telemecanique LC1D18BD IEC Contactor W/Relay LRD16C LRD16 9-13A
Schneider Telemecanique LC1D115 3-Pole Contactor Starter LA9 D 115603/604
Schneider Telemecanique Inverter ATV31H037M2A 0.37KW/0.5HP 200-240/60/1
Schneider Telemecanique Inverter ATV11HU18M2A 220v 0.75KW for industry use
Schneider Telemecanique Inverter ATV11HU18M2A 220v 0.75KW
SCHNEIDER TELEMECANIQUE GV2ME21 MOTOR CIRCUIT BREAKER
SCHNEIDER TELEMECANIQUE GV2ME10 4-6.3A CIRCUIT BRAKER
SCHNEIDER TELEMECANIQUE GV2ME08 2.5-4A CIRCUIT BRAKER
SCHNEIDER TELEMECANIQUE GV2ME07 1.6-2.5A CIRCUIT BRAKER
Schneider Telemecanique ATV58 Inverter Operator Panel Free Ship
Schneider Telemecanique ATV312 Membrane Keypad ATV312 #H410 YD
Schneider Electric/Telemecanique ABL8REM24030 Power
Schneider Electric/Telemecanique ABL7 RE2402 POWER SUPPLY
SCHNEIDER ELECTRIC TWIDO 2 CH ANALOG INPUT MODULE - TWDAMI2HT
Schneider Electric TWDAV02HT Analog Out Twido Telemecanique C
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Schneider Electric Telemecanique Contactor LC1F400. 500A. 1000V.MAX.COIL220.
Schneider Electric Telemecanique Contactor LC1D115 ~ 600V ~ Very nice condition!
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Schneider Electric LC2D09G7 **GENUINE** Telemecanique
Schneider Electric LC1D50AG7 **GENUINE** Telemecanique
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SCHNEIDER ELECTRIC AUTOMATION TELEMECANIQUE TSXDMF401 TSX DMF 401 17-10/20 PLC
SCHNEIDER ELECTRIC AUTOMATION TELEMECANIQUE TSX DST 8 82 TSXDST882 TSXDST 882
Schneider Elec. Telemecanique Power Supply 240VAC to 24VDC; Model: ABL7 RE2402
Schneider Contactor, LC1F1154, in box
Schneider Automation TELEMECANIQUE TSX P47-425 ( TSXP47425 ) V 5.60
SCHNEIDER AUTOMATION AEG TELEMECANIQUE TSX DST 16 12 TSXDST1612 24VDC 16 OUTPUTS
Schneider / Telemecanique, GV3P18, in box
Schneider / Telemecanique, GV2P22H7, in box
Revent 620 / 624 Telemecanique XCKL Door Limit Switch. 50223311.
QTY 8 TELEMECANIQUE LIMIT SWITCHESW/ OPERATING HEAD XCK-J/ZCK-E23
Qty 2~Telemecanique Indicator Safety Light Lamp Machine Tower Red-Amber Green
Pushbutton Station, 4 Unit, Open Close Stop Off/On Telemecanique NIB
PLC Power Supply Telemecanique TSXSUP702 in good working codition
ONE Schneider TWDLCAA24DRF Telemecanique MODICON TWIDO PLC
OMRON TELEMECANIQUE REVERSING CONTACTOR W/OVERLOAD ASSEMBLY MODEL LC2D099A65
OMRON TELEMECANIQUE REVERSING CONTACTOR ASSEMBLY MODEL LC2D099A65
Old Stock (4) Telemecanique LC1D186BL Motor Starter Contactor 7.5 HP
Old Stock (3) Telemecanique LC1D12BD Motor Starter Contactor 7.5 HP
NOS Telemecanique LC1-F500 Part (Only what is seen in picture)
NOS Square D Telemecanique Reversing Contactor LC2D40 3-pole 3-phase 600V 40A
NIBTELEMECANIQUE LC2D12B7 LC2-D12B7 REVERSING CONTACTOR
NIB TELEMECANIQUE XY2-CE1A196H7 XY2CE1A196H7 CABLE PULL SWITCH 10AMP 300V XY2CE
NIB TELEMECANIQUE XCS-A703 SAFETY LIMIT SWITCH XCSA703
NIB TELEMECANIQUE XCK-J5970H7 SAFTEY INTERLOCK SWITCH XCKJ5970H7
NIB TELEMECANIQUE VCD2 MAIN EMERG. SWITCH
NIB TELEMECANIQUE VCD0 MAIN EMERG. SWITCH
NIB Telemecanique Square D Contactor Part # LC1D32T7 480V 50/60Hz
NIB Telemecanique Schneider Multifunctional Control Unit LUCM18BL - 60 day wrnty
NIB TELEMECANIQUE MOTOR CIRCUT BREAKER GV2 P16H7, 9-14 AMPS
NIB TELEMECANIQUE LX1FJ110 COIL 110/120V 50/60Hz
NIB TELEMECANIQUE LP1 D6511BD CONTACTOR LP1D6511BD, 24V D.C.
NIB TELEMECANIQUE LC2D1210B7 REVERSING CONTACTOR
NIB .. Telemecanique Coil 415/480V Cat# LX1 FJ415 .. VH-37
! TELEMECANIQUE REVERSING CONTACTOR LC2D1201 LC2D1201F7 110 VOLT 50/60 HZ
! TELEMECANIQUE CABLE CONTROLLED EMERGENCY STOP SWITCH XY2CE2A290H7
XBTGT4330 and original for Schneider Telemecanique Touchscreen Glass
TELEMECANIQUE/SQUARE D LC2DREQ3512 CONTACTOR
TELEMECANIQUE XY2CH13150H7 PULL SWITCH
Telemecanique XY2-CE2A296H7 Emergency Stop Cable Rope Pull Switch Left
TELEMECANIQUE XY2-CE CABLE PULL SWITCH- NO BOX
TELEMECANIQUE XY2-CE CABLE PULL SWITCH
TELEMECANIQUE XY2 CE1A196H7 EMERGENCY STOP PULL SWITCH PUSHBUTTON D331538
TELEMECANIQUE XVBC9B AUDIBLE UNIT
Telemecanique XVAC921 Sounder for Light Stack 12 to 48VDC Intermittent Tone
Telemecanique XVA L76C024 Flashing Beacon Blue
Telemecanique XUMH15353R Photoelectric Sensor Free Shipping
TELEMECANIQUE XSAV12801 PROXIMITY SENSOR
TELEMECANIQUE XSAV02801 PROXIMITY SENSOR
TELEMECANIQUE XS2M30MA250 PROXIMITY SENSOR
Telemecanique XS1L06PA340LD20 Proximity Switch Free Shipping
Telemecanique XML - F040D2035 Dual Stage Electronic Pressure Switch
Telemecanique XCS Z05 Safty Interlock Key XCSZ05 BK
Telemecanique XBTOT5220 XBTOT5320 10.4" Touch Glass
TELEMECANIQUE VW3A66101,52012-648,52012-639-01 DRIVE KEYPAD 3M ATV66 CT , CS
TELEMECANIQUE UNIVERSAL PRESSURE SENSOR XML-F250D2026 0 — 3625 psi/250 bar
Telemecanique Type L Lox Limit - Switch # PL300WS NEMA A600