2214-30SLQTA

2214-30SLQTA

由于电动机工作频率范围宽，转速变化范围大，各种电磁力波的频率很难避开电动机的各构件的固有震动频率。当电磁力波的频率和电动机机体的固有振动频率一致或接近时，将产生共振现象，从而加大噪声。
4、电动机绝缘强度
目前中小型变频器，不少是采用PWM的控制方式。载波频率约为几千到十几千赫，这就使得电动机定子绕组要承受很高的电压上升率，相当于对电动机施加陡度很大的冲击电压，使电动机的匝间绝缘承受较为严酷的考验。
另外，由PWM变频器产生的矩形斩波冲击电压叠加在电动机运行电压上，会对电动机对地绝缘构成威胁，对地绝缘在高压的反复冲击下会加速老化。
5、电动机的效率和温升
不论那种形式的变频器，在运行中均产生不同程度的谐波电压和电流，使电动机在非正弦电压、电流下运行。
以目前普遍使用的正弦波PWM型变频器为例，其低次谐波基本为零，剩下的比载波频率大一倍左右的高次谐波分量为：2u+1(u为调制比)。高次谐波会引起电动机定子铜耗、转子铜(铝)耗、铁耗及附加损耗的增加，最为显着的是转子铜(铝)耗。
因为异步电动机是以接近于基波频率所对应的同步转速旋转的，因此，高次谐波电压以较大的转差切割转子导条后，便会产生很大的转子损耗。
除此之外，还需考虑因集肤效应所产生的附加铜耗。这些损耗都会使电动机额外发热，效率降低，输出功率减小，如将普通三相异步电动机运行于变频器输出的非正弦电源条件下，其温升一般要增加10%–20%。
 
随着变频器技术的快速发展，变频调速技术在各种电机应用方案中已成主流。通用变频器在工业领域的应用为企业大大的节约了资源，降低了企业的成本，保护了生产设备。那么企业该怎么选择合适的通用变频器的呢？下面变频器厂家就详细的介绍一下：
正确选用变频器对于机械设备的传动控制系统的正常运行时非常重要的，避免因选型错误，引发设备故障，造成不必要的损失。首先应明确选用变频器的目的，其次在根据设备类型、负载特性、调速范围、控制方式、使用环境、防护结构等要求来选择合适的变频器。以此，来达到既满足生产工艺，又实现经济效益的目的。






 
 
 
 
DODGE APG GEAR MOTOR REDUCER, RELIANCE ELECTRIC INDUSTRIAL, CO. #P21G1010M
 
 
 
Reliance 0-51862-1
 
 
 
Reliance 0-51862-1
 
 
 
RELIANCE ELECTRIC H4050PH00AA  H4050PH00AA
 
 
 
 
RELIANCE ELECTRIC D3940-026 NSPP D3940026
 
 
 
Reliance Electric PF-CONSOLE PFCONSOLE Programing Console
 
 
 
 
RELIANCE ELECTRIC 0-58704  058704
 
 
 
Reliance Electric 57406-K 57406K Drive Controller
 
 
 
 
RELIANCE ELECTRIC 0-51890-6  0518906
 
 
 
RELIANCE ELECTRIC 0-54349-2  0543492
 
 
 
RELIANCE ELECTRIC 0-52012 NSFP 052012
 
 
 
 
RELIANCE ELECTRIC 69089-2A NSFP 690892A
 
 
 
 
RELIANCE ELECTRIC 3DM4000 NSFP 3DM4000
 
 
 
 
RELIANCE ELECTRIC 01K1508857-LBT1 RPM AC MOTOR, FRAME L2153C 20 HP,
 
 
 
 
1 NIB RELIANCE ELECTRIC 57C415 0-57415-A DIGITAL INPUT 12 - 24 V AC/DC
 
 
 
 
RELIANCE DISTRIBUTED SYSTEM POWER MODULE 803610-RB
 
 
 
RELIANCE ELECTRIC 5VU4110 100 HP VARIABLE TORQUE AC DRIVE ,USED
 
 
 
RELIANCE GP2000 VS DRIVE 20HP MOTOR DRIVE CONTROL
 
 
 
Dodge 350 Tigear Speed Reducer Gear Box 1.5 horse power Reliance Electric Motor
 
 
 
 
RELIANCE ELECTRIC CARDPAK D-49011-6A DRIVER
 
 
 
 
RELIANCE BSA-15 SERVO AMPLIFIER 9106-0001 Rev R
 
 
 
 
RELIANCE BSA-15 SERVO AMPLIFIER 9106-0001 REV K
 
 
 
 
Reliance Electric 846664-R UCC1 Card 846664R
 
 
 
reliance electric automate 4 ch. input module 61C345
 
 
 
 
Reliance Electric DC motor T18R1119B 1.5 hp 7/8" shaft
 
 
 
 
Reliance PC Board 0-51831-7 0518317 518317 51831-7
 
 
 
Reliance Electric 57407-4F 68000 CPU Module 574074F
 
 
 
Reliance Electric 20hp 3 Phase Duty Master XEX ID#: 6837855-EH T1 Motor  P2
 
 
 
 
 
 
RELIANCE ELECTRIC 0-57411-2F
 

 
 
0-49008-4 RELIANCE
 
 
 

0-49001-6 RELIANCE
 
 
 
Reliance 25 HP, AC Electric Motor, 324T FR, TEFC ENCL
 
 
 
 
RELIANCE PROCESSOR MODULE 57407-4C
 
 
 
 
RELIANCE ELECTRIC 0-57160-L
 
 
 
 
 
Reliance Electric Duty Master 10hp Motor
 
 
 
 
RELIANCE ELECTRIC 57407-4C
 
 
 
 
Reliance 01KL518649 7.5 HP Electric Motor 3545 RPM 230/460 VAC 60/120 Hz N.I.B.
 
 
 
 
 
*Reliance Electric Industrial dutymaster AC Motor 10HP*
 
 
 
 
 
Reliance GP2000 VS Drive 30 Hp
 
 
 
 
Reliance Electric Printed Circuit P/N 0-48680-116 (NIB)
 
 
 
 
Applied Materials/Relia​nce Electric XBR-2310 1843623012 with 60 day
 
 
 
 
RELIANCE ELECTRIC FLEXPACK 14C 109V
 
 
 
 
RELIANCE ELECTRIC 3HP SUMP PUMP
 
 
 
 
Reliance 45C380 Register Input Module 45380 (UVG)
 
 
 
 
DODGE / RELIANCE APG GEAR MOTOR
 
 
 
 
RELIANCE ELECTRIC SP500 DRIVE 1SU41007 7.5hp 460V
 
 
 
 
RELIANCE ELECTRIC 0-52859-2 DRIVE BOARD 0528592  IN FS STATIC BAG
 
 
 
 
Reliance Electric 60 Horsepower Motor
 
 
 
 
 RELIANCE SUPER RPM MOTOR 1/.5 HP 3500RPM
 
 
 
Reliance 57411-2G Resolver Input Module
 
 
 
 
Reliance Frequency to Voltage Converter, 920-01-014, RD61
 
 
 
 
Reliance 50-Gallon 40,000-BTU Energy Star Natural Gas Water Heater

 
 
 
 
NIB Reliance Base Driver Control 0-55325-24
 
 
 
 
 Reliance Elec. Y Servo motor Y-3023-2-H00A #9401LR
 
 
 
 
RELIANCE 0-51903 NIB 051903
 
 
 
 
RELIANCE ELECTRIC 0-109055-001R  0109055001R
 
 
 
 
RELIANCE ELECTRIC 0-52711-15  05271115
 
 
 
 
RELIANCE ELECTRIC 0-52711-4  0527114
 
 
 
 
RELIANCE ELECTRIC 0-54214-1  0542141
 
 
 
 
RELIANCE ELECTRIC 52711-4  527114
 
 
 
 
RELIANCE ELECTRIC 864741R  864741R
 
 
 
 
RELIANCE ELECTRIC 422013-2A NSFP 4220132A
 
 
 
 
Reliance 0-52840-57
 
 
 
Reliance 0-51847-1
 
 
 
Reliance 69 HP Submersible Wet Pit Electric Motor
 
 
 
RELIANCE ELECTRIC T56S1707A-CF NSFP T56S1707ACF
 
 
 
 
Reliance 0-57408-B
 
 
 
 
RELIANCE ELECTRIC 847143-RG  847143RG
 
 
 
 
 
RELIANCE SERVO DRIVE ELECTRO-CRAFT MAX 400 20-85VAC 15A
 
 
 
 
 
701819-27AWK RELIANCE POWER CUBE KIT WITH K-3 CUBES
 
 
 
 
 
B76R5693 RELIANCE 3/4HP 1425RPM 3/50/220 SXTF MOTOR
 
 
 
 
 
RELIANCE LCL-3000 3000A 600V CURRENT LIMITING FUSE
 
 
 
 
Reliance Electric / Electro-Craft Model: Y-1002-1-H00AA Servo Motor
 
 
 
 
 
RELIANCE ELECTRIC 1SU21005  1SU21005
 
 
 
 
 
Reliance Electric 0-51893-4/01589​34 FCCE
 
 
 
 
 
Reliance 0-52875-1/ 0528751/528751
 
 
 
 
 
Reliance Electric 57407-4F/57407/​0-57407-4F/0574​07
 
 
 
 
 
Reliance Electric 45C-201C/45C201​C I/O Processor
 
 
 
 
 
 RELIANCE Explosion Proof Motor 40 HP 324TS Frame 3345 RPM TEFC 230/460 V
 
 
 
 
 
Reliance 140,000-BTU Liquid Propane Gas Tankless Water Heater
 
 
 
Reliance 140,000-BTU Natural Gas Tankless Water Heater Energy Star
 
 
 
 
RELIANCE ELECTRIC A76T1077  A76T1077
 
 
 
 
 
RELIANCE ELECTRIC 801414-4A  8014144A
 
 
 
 
 
RELIANCE ELECTRIC 801414-88  80141488
 
 
 
 
 
RELIANCE ELECTRIC 797921-R  797921R
 
 
 
 
 
RELIANCE ELECTRIC 49001  49001
 
 
 
 
RELIANCE ELECTRIC 847224-RD  847224RD
 
 
 
 
 
RELIANCE ELECTRIC 385C500  385C500
 
 
 
 
 
RELIANCE ELECTRIC 797939-R  797939R
 
 
 
 
 
RELIANCE ELECTRIC 14C-103-1U  14C1031U
 
 
 
 
RELIANCE ELECTRIC 705330031P  705330031P
 
 
 
 
 
RELIANCE ELECTRIC 600686-20WE NSPP 60068620WE
 
 
 
 
 
Reliance 0-49005-4
 
 
 
RELIANCE ELECTRIC 0-54122-15  05412215
 
 
 
 
 
RELIANCE ELECTRIC 0-54220  054220
 
 
 
 
 
RELIANCE ELECTRIC 0-54220-1  0542201
 
 
 
 
 
RELIANCE ELECTRIC 0-54220-2  0542202
 
 
 
 
 
RELIANCE ELECTRIC 0-52712-3  0527123
 
 
 
 
 
RELIANCE ELECTRIC 0-54390  054390
 
 
 
 
 RELIANCE MOTOR 1/2HP 1750RPM 56C 01KA505500
 
 
 
RELIANCE ELECTRIC 0-574041-D  0574041D
 
 
 
RELIANCE ELECTRIC 847143-RP  847143RP
 
 
 
RELIANCE ELECTRIC 86474-1S  864741S
 
 
 
RELIANCE ELECTRIC 0-54215  054215
 
 
 
RELIANCE ELECTRIC 0-847394-2R  08473942R
 
 
 
RELIANCE ELECTRIC 78091-R NSFP 78091R
 
 
 
Reliance Electric 57C414 Modbus interface module 0-57414-1R Sealed
 
 
 
RELIANCE ELECTRIC 0-52013 NSPP 052013
 
 
 
Reliance 2V4140
 
 
 
RELIANCE ELECTRIC 45C-1A NSPP 45C1A
 
 
 
RELIANCE ELECTRIC 809.5400  8095400
 
 
 
Reliance 0-52840-480
 
 
 
Reliance 0-52860-2
 
 
 
RELIANCE ELECTRIC 65241-33A NSFP 6524133A
 
 
 
Reliance 0-52862
 
 
 
 
RELIANCE ELECTRIC 0-51881-1 NSPP 0518811
 
 
 
Reliance 0-52002-3
 
 
 
Reliance 0-52002-3
 
 
 
Reliance Electric Company 0-52808 Circuit Board
 
 
RELIANCE ELECTRIC SP500-1SU44001 EASY CLEAN PLUS VS DRIVE, AC MOTOR DRIVE, 380-4
 
 
 
 
RELIANCE ELECTRIC 14C-42U  14C42U
 
 
 
RELIANCE ELECTRIC 14C-42U-MOD  14C42UMOD
 
 
 
RELIANCE ELECTRIC R45C1000M-R  R45C1000MR
 
 
 
RELIANCE ELECTRIC R45G1000M-SM  R45G1000MSM
 
 
 
RELIANCE ELECTRIC R45G1000M-UG  R45G1000MUG
 
 
 
RELIANCE ELECTRIC 0-52876 NSPP 052876