模块KL1408

模块KL1408

无论哪种形式的电机变频器在运行中产生不同程度的谐波电压和电流，使电机处于非正弦电压。电流下运行。根据数据介绍，以目前为例

　　常用的正弦波PWM以型变频器为例，其低谐波基本为零，其余高谐波分量约为载波频率的两倍u+1（u为调制比）。

　　高谐波会导致电机定子铜的消耗。转子铜（铝）消耗。铁耗及附加损耗的增加，为显着的是转子铜（铝）消耗。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。这些损耗都会使电机电动机额外发热，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%。

VIASYS Mainboard 52130A PCBA MAIN VELA Critical care

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RAYTHEON Modulation and Monitoring PEC 808415/001/006

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WATLOW ANAFAZE CLS208  Spare Part

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Agilent 880957-809 ZORBAX PSM 3000 Analytical 

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LINCOLN 82050 Barrel Grease Pump 

Agilent 301-211-HSP Transfer Line, 1m ss deactivated AA

SIEMENS 6ES7 151-7AA20-0AB0 ET 200S IM151-7 CPU 

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ABB 3BSE040360R41 Compact Control Builder CD license

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Alcatel 3BA23241AA GPA2 Board 

TECTROL TC93M-1458 Power Supply Module 

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Agilent 1100 Series 5064-8201 Solvent Cabinet 1 bottle

B&R Power Panel Controller PP210 4PP210.0000-95 & IF797

Lot 46 ESY-LUX Protector Rauchmelder 230V Smoke detect

TAKIKAWA COUNTING EVENT PRINTER AD-50  Surplus

SIMATIC BOX PC 820 6ES7647-3DC00-0DX0 USED

Altivar IMC Drive controller HMI VX4A61101Y ATV61 160KW

Ferraz Shawmut PC123UC20C630TF J220371 2000V 630A FUSE

Agilent 5183-4779-P Flow Tracker 1000 Flowmeter 

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