变频器的结构和电抗器的使用,是说两个不同的问题,他们都与功率因数连在一起,这也许是一种技术与商业挂钩的一种炒作。反正电力电子电路的原理在那摆着,怎么有利怎么联系呗。
谐波的产生以及谐波对功率因数的影响,是多方面的,与具体体统的结构、技术路线、安装等等都有关联,真要是分析谐波和产生以及消除的问题,一定要联系现场的实际来谈,才能有的放矢。当然,大型系统不允许不加输入电抗器的。这点是肯定的。
GE CR22D135G463 Renewal Coil, 200V DC NOS
GE CR22D135G108 Renewal Coil 220V 50Hz 265V 60Hz NOS
GE CR104PBL11R1S8 Illuminated Pushbutton Switch, NOS
RO Power Supply 325JP In:110/220VAC O:5VDC @25A
GE CR22D151G42 Renewal Coil NOS
HP50-22 Coil 230VAC NOS Vintage 7@ Lot
GE CR22D165G130 Renewal Coil NOS
GE GL 1520 Single Locking Receptacle, 3P, 4W,NOS
Napa ST26 NAST26 Echlin starter switch new
Pneutronics 990-004765-015 Valve Control Module,Used
Reliance DC Drive DC3N DC3N-12D-4C-010?-AI
Siemens P30KB51 Modification Kit Pushbutton Start Stop
Rees Rope Operated Switch 03275-500 Heavy Duty 600VAC
GE CR22D151G2 Renewal Coil NOS
Idec SR3P-05 Base for Relay Module Plug In 8@ Lot New
AB Allen Bradley 1771-IAD Input Module Refurbished
Numatics MVT42N08Y Slo-Start Exhaust Dump Valve NOS New
Notifier Emhart LFS New NOS Vintage Plug In Module
Mitsubishi Transistor Terminal QM300HA-24
GracePort interface P-R1-H3R3 new
Reliance Current Transformer 64670-6-R 300:1 600