MX213

技術(shù)肯定是有的，性價(jià)比是真的不高。技術(shù)含量不高，但這東西的成本卻真的很難降下來。軟起動(dòng)要調(diào)幅控制，采用雙向可控硅，加上電源電路，主控板，顯示接口，等等，這樣算下來硬件成本其實(shí)并不低。其中可控硅值錢，有廠商就在這上面節(jié)約成本。市場(chǎng)上便宜的軟起動(dòng)，三個(gè)可控硅改用兩個(gè)，中間一相用一條鋁排穿過去就行。

軟起動(dòng)雖然功能有限，啟動(dòng)電流還大，工作也是工頻狀態(tài)，無法能調(diào)速節(jié)能，市場(chǎng)上還有那么多用戶在用，就沒有優(yōu)點(diǎn)！倒也不是，這東西方便大規(guī)模集中控制，順序啟動(dòng)，且穩(wěn)定性比變頻器還高，在一些不需要調(diào)速的場(chǎng)合，優(yōu)勢(shì)明顯。大品牌如美國(guó)AB羅克韋爾，瑞士ABB，法國(guó)施耐德，德國(guó)萬高，伊頓.金鐘默勒……不管是控制電路還是軟件功能，都下了功夫去研究過軟起動(dòng)器。功能分：電壓線性啟動(dòng)，恒轉(zhuǎn)矩啟動(dòng)。那么，作為干工控維修的我們應(yīng)該怎樣的認(rèn)識(shí)軟起動(dòng)呢？

MX213

3COM SWITCH 4500 POE ETHERNET 3CR17572-91-US

3COM COREBUILDER 9000 FDDI (6)SC MODULE 3CB9RD6MC

 3Com Switch 4500 PWR 50-Port 3CR17572-91-US

3COM MODULE FOR 5500G-EI ETHERNET 1000MBPS 3C17261US

3COM 4070 24-PORTS SWITCH 1000BASE-SX 1000BASE 3C17707

3Com 3CRWX220095A Wireless LAN Controller WX2200 

 3COM 3C0EP100092 EPICCenter Contact Center

3COM 3CR15800 Intelligent Management Enterprise v3.2

3COM Wireless Lan Switch & Controller WX4400  24 MAP

3COM SWITCH 4500G 24-PORT ETHERNET SWITCH 3CR17761-91

 3COM 0231A56F Router 4-Port T1 IMA Interface Module

3COM ONCORE SWITCHING HUB 90-0958-1C

 3COM 3C13774 Router 1-Port 10/100/1000 Module MIM

3COM 3CR17280-72 Switch 5500G Open Services Module OSM

3COM 3CRVH701696C V7310 Series IP Server 7.1 Hard Drive

3COM 3CRVH701696C V7310 Series IP Server 7.1 HDD

 3COM 3CR15500 Network Director HUGE SALE!!

3com 3C10600A Nbx V3000 Ip Telephony Solutions W V5.x

 3COM 3CR14870-72 Router Networking Module FIC

3Com NBX V3000 IP Telephony System VOIP 3C10600A +Extra

 3COM 3CRS42G-48-91 Switch 4210G 48-Port 10/100/1000

3Com NBX V3000 IP Telephony System VOIP 3C10600A +Extra

3COM 3C168916 Switch 7750/7700 12-port 10/100/1000

3COM 3CWXM10A 3COM WIRELESS SWITCH MANAGER 3WXM

 3Com Switch 8800 24-Port 10/100/1000 Module 3C17516

3COM 3CR15810 Intelligent Management Cntr Standard v3.x

3Com TippingPoint 10 Intrusion Prevention System LOWER$

HD SSTEEL 3 COM SINK WITH IN SINK ERATOR FOR BAKERY PAN

3COM SWITCH SUPERSTACK III 4400 ETHERNET 3C17204

3Com TippingPoint 200 UNITY ONE IPS2 Firewall WARRANTY

3COM MODULE ETHERNET 10MBPS 8-PORTS 3C201200

3COM SWITCH 5500-EI ETHERNET 10/100MBPS 3CR1716291US

3COM 3C10602A NBX V3001R Platform IP telephony solution

3COM MODULE ETHERNET 10MBPS 1-PORT 3C6023A

3COM 3C17527 Switch 8800 2-Port Advanced Module SALE!

3COM 3CWXUPAGS24 Prevention System Upgrade License

3COM SWITCH 5500EI 48PT 10/100 + 4 SFP 3CR17162-91-US

3Com H3C Vapel Switching Power Supply 0231A820

3COM 3C16886 7750 96 Gbps Switch Fabric Mod with 4 SFP 

3Com NBX V3000 IP Telephony System VOIP 3C10600A +Extra

3Com Switch 5500G-EI 24-Port SFP 3CR17258-91

3COM MODULE ETHERNET 10/100MBPS 36-PORTS 3CB9LF36T

3Com NBX V3000 Telephony System Analog 3C10600B +Extra

3COM 3CR10801A NBX V3001 BRI-ST Platform GREAT DEAL!!!

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3COM 3CXENPAK94 10GBASE-SR XENPAK SC Connector SALE!

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 3COM 3CR10842A NBX V3001 BRI Chassis FRU SALE

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3Com SuperStack 4 5500G-EI Gigabit Switch 3CR17259-91

Includes 3C17266 PSU

3Com Router 3C13805 Module for 6040 Chassis

3Com? Switch 5500G-EI 24-Port Gigabit +4SFP 3CR17250-91

Expedited shipping available

3COM 3CR17671-91 Switch 4200G PWR 24-Port

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3COM 3CRUS2475 Unified Gigabit Wireless PoE Switch 24

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3COM Total Control 1000 4 E1 120, wrnty (Cisco AS5300)

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3Com SuperStack 4 5500G-EI Gigabit Switch 3CR17254-91

Includes 3C17266 PSU & 3C17260 8 Port SFP Modules

3COM 5500G-EI 24 port Gig Switch 3CR17250-91 HP JE088A

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 3COM 3C13866 Router 4-Port Interface Card FIC SALE

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3COM 3C17526 Switch 8800 4-Port 10GBASE-X Module

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Agilestar - 0231A0A8 - For use in 3Com -  in Box

 3COM 3CR10841A NBX V3001 Family Replacement Chassis

3COM 3C17205TAA 

 3COM 3CR17662-91 Switch 4200G 48-Port 10/100/1000

One-day shipping available

Lot-75 3Com Network Switch hub 3C39036 3C39024 3C93012

3COM 3C17261 , GENUINE **(  )**

3COM MODULE ETHERNET 10MBPS 1-PORT 3C16820US

3COM SWITCH PLUG-IN MODULE WAN 1-PORT 3C16857

3COM INTL NBX E1 PRI TRUNK MODULE 3C10165C

3COM MODULE FOR SWITCH 4005 ETHERNET 1000MBPS 3C16842

 3COM 3C15500 Network Director V1.0

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3COM 3C13877 ROUTER 1-PORT T3 ATM FLEXIBLE INTERFACE CA

3Com 3C16862A 7700 20-port 1000BASE-X Module SFP Ports

3COM SUPERSTACK III SWITCH 4400 UPLINK MODULE 3C17229

3COM 4070 24-PORTS SWITCH 1000BASE-SX 1000BASE 3C17707

3COM COREBUILDER 9000 930 AC POWER SUPPLY 3CB9EP9US

 3Com SuperStack 3 Switch 4400 48-Port. 3C17204-US 

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 3COM 3C13805 Router 6000 Router Processing Unit 2 

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 3COM 3C13878 Router 2-Port Flexible Interface Card

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3COM 3C13882 Router 1-Port Flexible Interface Card

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3COM 3C13766A Router 4-Port Interface Module MIM SALE

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3COM 3C16886 Switch 7750 96 Gbps Switch Fabric 4 SFP 

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 3COM 3C13877A Router 1-Port T3 ATM FIC MODULE

 3COM 3C15500U Upgrade Network Director V1.0

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3COM 3CR15800A Intelligent Management Center License

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3COM 3CRVH701896A V7005 Series 80 Gig SATA Drive Spare

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3COM 3CRVG71225-07 VCX V6100 Four Spans Digital Gateway

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3Com Switch 7700 8-Slot AC 64G Kit 3c16852

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3COM 3CRTPZP0096C TippingPoint Zero Power Bypass Unit 5

 3COM 3C13864 Router 8-Port Interface Card FIC SALE

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3Com 3C16890 48-Port Switch Module PoE 7750

3COM 3CRVH701497 NBX IP Conferencing Replacement HDD

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3COM 3CRUWX301075 Wireless LAN Controller WX3010

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3COM 3C10428A PBX Integration Media Gateway 8 PBX Ports

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3COM 3CRTPX5-U-96 X5 Unified Security Platform 10/100

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3COM NBX V3000 VOIP TELEPHONE SYSTEM W/ 31 PHONES

3COM 3C10602A NBX V3001R Version R6-0-31

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3COM Total Control 1000 14 T1 336 data w/2AC, 2Arc, NMC

 3COM 3C15710 Integration Kit for IBM Tivoli Netview

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TIPPINGPOINT 3COM Tipping Point 50 Mulit-zone Unityone

SBASY0000000271 PKASY0000000045 3CRTP0050C96C

3COM SWITCH SUPERSTACK III 3824 ETHERNET 3C17400

3COM SOFTWARE CB 9000 ATM BASE SOFTWARE 3CB9SAB

3COM MODULE ETHERNET 10/100MBPS 16-PORTS 3C37601

HP JE049A Expansion Module for 3Com E4500G, E4800G

3Com NBX V3000 IP Telephony System VOIP 3C10600A +Extra

3C10412 14 + 3C10280 CASX1 3C10328 VTL 2-PORTS

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3COM 3C17529 ,GENUINE **(  )**

3COM 3C0VH722296B VCX V7205 146GB SAS 300 Internal HDD

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 3COM 3C17708 US Switch 4050 12 10/100/1000 ports

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3COM SWITCH 5500-SI ETHERNET 10/100MBPS 3CR1715291US

3COM SUPERSTACK 3 FIREWALL EN FAST EN 3CR16110-95-US

3COM EMAIL FIREWALL FIREWALL EN FAST EN 1 U 3CR3MFA92

3COM 3CR17172-91 Switch 5500-EI PWR 52-Port 10/100 SFP

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