描述

象限變頻器的典型應(yīng)用是具有位勢負載特性的場合，例如提升機，機車牽引，油田磕頭機，離心機等。在一些大功率的應(yīng)用中，也需要四象限變頻器以減小對電網(wǎng)的諧波污染。以提升機的應(yīng)用為例，當(dāng)提升重物時，四象限變頻器拖動電機克服重力做工，電動機處于電動狀態(tài)。當(dāng)下放重物時，逆變側(cè)產(chǎn)生勵磁電流，重力牽引電機發(fā)電，電動機處于發(fā)電狀態(tài)。勢能轉(zhuǎn)化為電能通過整流側(cè)回饋的電網(wǎng)。采用帶有PWM控制整流器變頻器具有四象限運行的功能，能滿足各種位勢負載的調(diào)速要求，可就電機的再生能量轉(zhuǎn)化為電能送回電網(wǎng)，達到最大限度的節(jié)能的目的。不僅如此，它還可減少電源的諧波污染，功率因數(shù)可接近于1，是一種真正的“綠色”變頻器

我們這里有您急需的停產(chǎn)備件，

優(yōu)勢現(xiàn)貨，詢不到的，買不到的，請聯(lián)系我們！

絕 對優(yōu)勢，絕 對低價！絕 對正品，優(yōu)質(zhì)的產(chǎn)品，一流的服務(wù)，充足的庫存，

歡迎來電詢價，我們將會給您最優(yōu)惠的價格！

主營：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅(qū)動模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

Square D JJA36175 3pole 175amp 600v circuit breaker new

Cutler Hammer dry type Transformer 75kva 480 – 480Y/277

FPE Federal Pacific circuit breaker fusematic XF 100amp

ITE KMB3F800 3pole 800amp 600v circuit breaker

GE SKDA36AN0800 3p 800amp 600v circuit breaker switch

Siemens ITE HJD63F400 circuit breaker 3pole 400amp

Cutler Hammer HJD3250F circuit breaker 200a shunt trip

Square D HJA36125 3pole 125amp 600v circuit breaker new

ACME dry type Transformer 112.5 kva 480 – 208y/120

GE TLB434300 circuit breaker 3pole 300amp 600v

GE TLB434350 circuit breaker 3pole 350amp 600v

Cutler Hammer HKD3400F 3 pole 600v circuit breaker 400a

Cutler Hammer HKD3400F 3 pole 600v circuit breaker 100a

Siemens 300amp or 250amp N3R circuit breaker disconnect

Siemens JXD63B400 3pole 400amp 600v circuit breaker New

Square D MHL3660033DC168?0 circuit breaker aux & UV trip

Square D LA36400 3pole 400amp 600v circuit breaker

Square D LA36300 3pole 300amp 600v circuit breaker

Cutler Hammer HFD3125 circuit breaker 3pole 125amp NEW!

GE Spectra SB364RG bus plug disconnect 200amp 600v

Square D LC36400 3pole 400amp circuit breaker warranty!

Siemens ITE HFD63F250 circuit breaker 3pole 150amp

GE SKHA36AT0800 3pole 800amp 600v circuit breaker

Siemens ITE J6N3R circuit breaker enclosure Nema 3R N3R

Cutler Hammer 200amp 208v circuit breaker panel N3R/N12

Cutler Hammer HFD3150 circuit breaker 3pole 150amp NEW!

Square D KA36250 3pole 250amp 600v circuit breaker new

Square D KC34125 3pole 125amp circuit breaker warranty!

Square D KC34175 3pole 175amp circuit breaker warranty!

Square D KC34200 3pole 200amp circuit breaker warranty!

Square D KC34225 3pole 225amp circuit breaker warranty!

Cutler Hammer 400amp main circuit breaker panelboard

Cutler Hammer 600amp circuit breaker panelboard 480/277

GE SL363RGR bus plug 100amp 600v switch disconnect NEW!

Square D 400amp 4wire MLO circuit breaker panelboard

Siemens 225amp 600v N3R circuit breaker disconnect New

ITE 600 amp Main circuit breaker panelboard 208y/120

Siemens ITE MD63T800 circuit breaker trip unit 800amp

Siemens 400amp 350amp 250amp circuit breaker disconnect

10 Siemens ITE BF120 circuit breaker 1p 20amp type BLF

Siemens ITE FXD63B250 circuit breaker 3pole 250amp new

Siemens JXD63B350 3pole 350amp 600v circuit breaker New

Cutler Hammer KD3400F circuit breaker 3pole 400amp

GE dry type electrical Transformer 34kva 460v – 460/266

Siemens JXD63B400 3pole 400amp 600v circuit breaker

GE TJK636F000 circuit breaker 3pole 500amp 600v

Siemens Connecting Strap kit SMND circuit breaker panel

Siemens Connect Strap kit SLM1D circuit breaker panel

Siemens 300amp circuit breaker disconnect switch Nema1

Westinghouse LC3600WK breaker molded case switch 600amp

Siemens 200amp 600v N3R circuit breaker disconnect New

Siemens 600amp 240v fused disconnect switch with fuses

Square D H325N Fused disconnect switch 400a 240v 4w NEW

Square D KA36110 3pole 110amp 600v circuit breaker new

Siemens ITE QJ23B100H00s01 circuit breaker 3pole shunt

GE AMC3KM spectra mounting module circuit breaker

Cutler Hammer FD3225 circuit breaker 3pole 225amp NEW!

ITE Siemens BOS14354 3ph 3w 200amp 600v bus duct plug

Cutler Hammer KES3400LSI circuit breaker trip unit

Cutler Hammer KES3250LSI circuit breaker trip unit

Square D EDB34110 3pole 110amp 480v circuit breaker New

Square D PQ4620 bus plug disconnect 200amp 480v 3ph 4w

Siemens ITE LMD1 circuit breaker enclosure Nema1

Square D PQ4620 bus plug 200amp switch disconnect 480v

Siemens HED43B125 3pole 125amp 480v circuit breaker New

Siemens JXD63B250 3pole 250amp 600v circuit breaker

Westinghouse LA3400F circuit breaker 3p 350amp 600volt

Square D KA36150 3pole 150amp 600v circuit breaker new

GE SGDA32AT0400 circuit breaker 3p 400amp 240v Spectra

Westinghouse LC3600WK breaker molded case switch 600amp

Square D QDA32200 3pole 200amp 240v circuit breaker new

Square D KAL36150 3pole 150amp 600v circuit breaker New

Square D KAL36200 3pole 200amp 600v circuit breaker New

Cutler Hammer FD3225 circuit breaker 3pole 225amp

Siemens ITE FXD63B225 circuit breaker 3pole 225amp new

Siemens ITE FXD63B200 circuit breaker 3pole 200amp new

Siemens ITE FXD63B150 circuit breaker 3pole 150amp new