IC697CMM741

电压型与电流型有什么不同？ 变频器的主电路大体上可分为两类：电压型是将电压源的直流变换为交流的变频器，直流回路的滤波是电容；电流型是将电流源的直流变换为交流的变频器，其直流回路滤波石电感。 为什么变频器的电压与电流成比例的改变？ 异步电动机的转矩是电机的磁通与转子内流过电流之间相互作用而产生的，在额定频率下，如果电压而只降低频率，那么磁通就过大，磁回路饱和，严重时将烧毁电机。因此，频率与电压要成比例地改变，即改变频率的同时控制变频器输出电压，使电动机的磁通保持，避免弱磁和磁饱和现象的产生。这种控制方式多用于风机、泵类节能型变频器。

listedREXNORD REX 234R TRIPLE 3 STRAND 1/2IN 10FT ROLLER CHAIN D203609

listedTSUBAKI SINGLE STRAND 1 IN 35-3/8 IN ROLLER CHAIN B282401

listedREXNORD 08B-1 10FT SINGLE STRAND ROLLER CHAIN D394663

REXNORD WH-78 SINGLE STRAND 2-5/8IN PITCH 26-1/4IN ROLLER CHAIN D297815

25 1/4 IN 2FT SINGLE STRAND RIVETED ROLLER CHAIN D474213

listedREXNORD C2060 SINGLE STRAND 1-1/2 IN 10FT ROLLER CHAIN D241587

TSUBAKI S50 5/8 IN 10FT ROLLER CHAIN D398933

listedSINGLE STRAND 1/2 IN PITCH 148 IN LENGTH ROLLER CHAIN B311520

listedREXNORD 882 TABLETOP SINGLE STRAND 9-3/8 IN ROLLER CHAIN D323860

TSUBAKI RF06B-2 DOUBLE STRANDS 3/8IN PITCH 10FT ROLLER CHAIN D333810

listedEK2040 SINGLE STRAND 1IN PITCH 19-1/2IN ROLLER CHAIN D341600

listed1-1/4 IN 10 IN SINGLE STRAND ROLLER CHAIN B387889

listedTSUBAKI R840 RIVETED SINGLE STRAND 1/2 IN 10FT ROLLER CHAIN B256668

listedAMETRIC ANSI 16FT ROLLER CHAIN 1/2IN PITCH D310852

listedREXNORD 863 3/4IN PITCH 10FT LENGTH SINGLE STRAND ROLLER CHAIN D402526

HITACHI RS40 SINGLE STRAND 1/2 IN PITCH 10FT ROLLER CHAIN D255156

TSUBAKI RF2080-S SINGLE STRAND 2 IN 10FT ROLLER CHAIN B257088

listedRENOLD C2120CB 3 IN 10FT SINGLE STRAND COTTERED ROLLER CHAIN D503453

REXNORD 35-2 RIV DOUBLE STRANDS 3/8IN PITCH 10FT ROLLER CHAIN B314372

listedPEER 5/8 IN SINGLE STRAND ROLLER CHAIN D434711

DIAMOND 41 SINGLE STRAND 1/2 IN 4FT ROLLER CHAIN D367015

TSUBAKI RF2040 1 IN 5-1/2FT SINGLE STRAND ROLLER CHAIN B381094

TSUBAKI B160001 RS40HP 1/2 IN 10 IN SINGLE HOLLOW PIN ROLLER CHAIN D504167

listedHITACHI C2060 SINGLE STRAND 1-1/2IN PITCH 80IN LENGTH ROLLER CHAIN D263460

STOCK DRIVE PRODUCTS A 6M 7-25ACE 1/4 IN PITCH 5FT ROLLER CHAIN D437111

TSUBAKI RF2050S SINGLE STRAND 1-1/4 IN 10FT ROLLER CHAIN D318403

listedWHITNEY C2060H 1-1/2IN PITCH 10FT SINGLE STRAND ROLLER CHAIN D385905

listedTSUBAKI 120-4 1-1/2 IN 10FT QUADRUPLE STRANDS RIVETED ROLLER CHAIN D498279

listedRENOLD ROLLER 1/2 IN 25FT SINGLE STRAND ROLLER CHAIN B436407

listedMORSE 2362069 25R 1/4 IN PITCH 10FT SINGLE STRAND ROLLER CHAIN D425887

STEEL SINGLE STRAND 2-3/4 IN 10FT ROLLER CHAIN D324890

1/4 IN NO. 25 10FT ROLLER CHAIN D398924

MORSE 127729 DOUBLE STRANDS 3/4 IN 8-1/2FT ROLLER CHAIN B267234

TSUBAKI RS40-3 RP STEEL TRIPLE STRANDS 1/2 IN 10FT ROLLER CHAIN D218648

PEER 40 1/2 IN PITCH 131 IN LONG SINGLE STRAND ROLLER CHAIN D456135

ANSI 40 SINGLE STRAND 1/2IN PITCH 10FT ROLLER CHAIN D287579

listedWIPPERMANN RF STAINLESS 2IN PITCH 62IN SINGLE STRAND ROLLER CHAIN D416409

MORSE SC-3 LINK 3/8 IN ROLLER CHAIN D300113

DIAMOND X-1503-R SINGLE STRAND 1/2 IN 10FT ROLLER CHAIN D342270

TSUBAKI 50K12LRB 5/8 IN 10FT SINGLE STRAND RIVETED ROLLER CHAIN D504199

1/2 IN PITCH 5FT 40 ANSE SINGLE STRAND ROLLER CHAIN D434756

HITACHI 1222088 80 N SINGLE STRAND 1IN PITCH 40IN LONG ROLLER CHAIN D324358

3/4IN PITCH 17-7/8IN LENGTH SINGLE STRAND ROLLER CHAIN D375983