名稱:我國變頻器技術的發展現狀及應用
（一）變頻器的發展
隨著生產技術的不斷發展，直流拖動的薄弱環節逐步顯露出來。由于換向器的存，直流電機的維護量加大，單機容量、zui高轉速以及使用環境都受到限制。人們開始轉向結構簡單、運行可靠、維護方便、價格低廉的異步電動機。但異步電動機的調速性能難以滿足生產的需要。于是，從20世紀30年代開始，人們致力于交流調速技術的研究，然而進展緩慢。在相當長的時期內，直流調速一直以其優異的性能統治著電氣傳動領域。20世紀60年代以后，特別是70年代以來，電力電子技術、控制技術和微電子技術的飛速發展，使得交流調速性能可以與直流調速相媲美。目前，交流調速已進入逐步代替直流調速的時代。
（二）我國變頻器的應用
變頻器主要用于交流電動機（異步電機或同步電機）轉速的調節，是*的交流電動機、zui有前途的調速方案，除了具有的調速性能之外，變頻器還有顯著的節能作用，是企業技術改造和產品更新換代的理想調速裝置。自上世紀80年代被引進中國以來，變頻器作為節能應用與速度工藝控制中越來越重要的自動化設備，得到了快速發展和廣泛的應用。
1、變頻器與節能
變頻器產生的zui初用途是速度控制，但目前在國內應用較多的是節能。中國是能耗大國，能源利用率很低，而能源儲備不足。在 2003年的中國電力消耗中，60—70％為動力電，而在總容量為5．8億千瓦的電動機總容量中，只有不到 2000萬千瓦的電動機是帶變頻控制的。據分析，在中國，帶變動負載、具有節能潛力的電機至少有1．8億千瓦。因此國家大力提倡節能措施，并著重*了變頻調速技術。
應用變頻調速，可以大大提高電機轉速的控制精度，使電機在zui節能的轉速下運行。以風機水泵為例，根據流體力學原理，軸功率與轉速的三次方成正比。當所需風量減少，風機轉速降低時，其功率按轉速的三次方下降。因此，調速的節電效果非常可觀。與此類似，許多變動負載電機一般按zui大需求來生產電動機的容量，故設計裕量偏大。而在實際運行中，輕載運行的時間所占比例卻非常高。如采用變頻調速，可大大提高輕載運行時的工作效率。因此，變動負載的節能潛力巨大。
作為節能目的，變頻器廣泛應用于各行業。以電力行業為例，由于中國大面積缺電，電力投資將持續增長，同時，國家電改方案對電廠的成本控制提出了要求，降低內部電耗成為電廠關注焦點，因此變頻器在電力行業有著巨大的發展潛力，尤其是高壓變頻器和大功率變頻器。
2、變頻器與工藝控制（速度控制）
目前，中國的設備控制水平與發達國家相比還比較低，制造工藝和效率都不高，因此提高設備控制水平至關重要。由于變頻調速具有調速范圍廣、調速精度高、動態響應好等優點，在許多需要速度控制的應用中，變頻器正在發揮著提升工藝質量和生產效率的顯著作用。
3、變頻家電
除了工業相關行業，在普通家庭中，節約電費、提高家電性能、保護環境等受到越來越多的關注，變頻家電成為變頻器的另一個廣闊市場和應用趨勢。
帶有變頻控制的冰箱、洗衣機、家用空調等，在節電、減小電壓沖擊、降低噪音、提高控制精度等方面有很大的優勢。
國內變頻技術的現狀和發展前景
國內已經有較多的變頻器生產廠，但大部分的產品都是V／F控制和電壓空間矢量控制變頻器，使用在調速精度和動態性能要求不高的負載上應該沒有問題。工業應用中絕大部分都是這種負載，變頻器在這種場合應用zui重要的要求是可靠性，國產變頻器占國內*不高的主要原因是產品品質不過硬。V／F控制和電壓空間矢量控制變頻器比矢量控制變頻器從技術上來看要簡單得多，由于國內廠家大部分都是手工作坊式的生產，工藝欠佳，檢測手段有限，品質的一致性和穩定性難以保證。同樣是V／F控制的變頻器，國外的產品比國內的產品品質要好，這可能是生產工藝方面的差距。差距zui大的是半導體功率器件的制造業，至今在國內這仍是一個空白。
變頻器技術的另外一個層面是應用技術。多年來，國家經貿委一直會同國家有關部門致力于變頻器技術的開發及推廣應用，在技術開發及技術改造方面給予了重點扶持，組織了變頻調速技術的評測*工作，并把推廣應用變頻調速技術作為風機、水泵節能技改專項的重點投資方向，同時鼓勵單位開展同貸同還方式，抓開發、抓示范工程、抓推廣應用，還處理了風機、水泵節能中心，開展信息咨詢和培訓。 1995— 1997年，3年間我國風機、水泵變頻調速技術改造投入資金3．5億元，改造總容量達100萬千瓦，可年節電7億度，平均投資回收期約2年。據有關資料表明，我國變頻調速技術應用已經取得了相當大的成績，每年有數十億元的銷售額，說明我國的變頻器應用已非常廣泛。從簡單的手動控制到基于RS一485網絡的多機控制，與計算機和PLC聯網組成復雜的控制系統。在大型綜合自動化系統，*控制與優化技術，大型成套系統，如連鑄連軋生產線、高速造紙生產線、電纜光纖生產線、化纖生產線、建材生產線等，變頻器的作用是電氣傳動控制，其控制的復雜性、控制精度和動態響應都有很高的要求，已經*取代了直流調速技術。近年來，變頻器在功能上，利用*的控制理論，開發出了諸如卷娶提升、主從等控制功能，使應用系統的構成更加方便和容易，使變頻器的應用技術提高到一個新的水平。

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ADAPTEC 2258200-R 5405 4 channel SATA/sas 256mb pci express lp w/o cable sgl
ADAPTEC 2258200-R 5405 4 channel SATA/sas 256mb pci express lp w/o cable sgl
ADAPTEC 2258100-R 5405 4 channel SATA/sas 256mb pci express lp with cable
ADAPTEC 2258100-R 5405 4 channel SATA/sas 256mb pci express lp with cable
ADAPTEC 2258100-R 5405 4 channel SATA/sas 256mb pci express lp with cable
ADAPTEC 2258100-R 5405 4 channel SATA/sas 256mb pci express lp with cable
ADAPTEC 2244300-R 5805 8-channel pci express lp w/cable
ADAPTEC 2244300-R 5805 8-channel pci express lp w/cable
ADAPTEC 2244300-R 5805 8-channel pci express lp w/cable
ADAPTEC 2244300-R 5805 8-channel pci express lp w/cable
ADAPTEC 2244100-R 5805 8-channel pci express w/cable
ADAPTEC 2244100-R 5805 8-channel pci express w/cable
ADAPTEC 2244100-R 5805 8-channel pci express w/cable
ADAPTEC 2244100-R 5805 8-channel pci express w/cable
AD61 Mitsubishi PLC High Speed Counter Card
AD510A MSA1500 with MSA30 Enclosure Fibre Channel SAN
Active PA Speakers 8" inch cone 1.4" inch horn 2 way DXR8 YAMAHA 
Active PA Speakers 10" inch cone 1.4" inch horn 2 way DXR10 YAMAHA 
ACS-2901-RM-19 19 INCH RACK MOUNT KIT FOR CISCO 2901 ISR
ACS-2901-RM-19 19 INCH RACK MOUNT KIT FOR CISCO 2901 ISR
ACS-2821-51RM-?19 Rack Mount Kit for cisco 2821 2851 Fast Ship
Acramatic 900V2
ACMA 2535002024 NSFP 2535002024
Acer TravelMate TMP653-V-73528?G50Mikk 15.6" LED Notebook In Core i7-3520
Acer TravelMate TMP653-V-53324?G50Mikk 15.6" LED Notebook In Core i5-3320 8HR
Acer TravelMate TMP653-M-73528?G50Mikk 15.6" LED Notebook In Core i7-3520 8HR
Acer TravelMate TMP653-M-53214?G50Mikk 15.6" LED Notebook In Core i5-3210 8HR
Acer TravelMate TMP643-V-73528?G50Mikk 14" LED Notebook In Core i7-3520M HDMI
Acer TravelMate TM8573T-9627 NX.V4EAA.002 15.6" i7-2640M 2.80GHz 8GB 500GB Win7
Acer TravelMate TM8573T-72648G?50Mtkk 15.6" LED Notebook In Core i7 i7-2640M
Acer TravelMate TM8573T-72648G?50Mtkk 15.6" LED Notebook In Core i7 i7-2640M
Acer TravelMate TM8573T-6801 NX.V4EAA.001 15.6" i5-2450M 2.50GHz 4GB 320GB Win7
Acer TravelMate TM8573T-6801 NX.V4EAA.001 15.6" i5-2450M 2.50GHz 4GB 320GB Win7
Acer TravelMate TM8573T-6801 NX.V4EAA.001 15.6" i5-2450M 2.50GHz 4GB 320GB Win7
Acer TravelMate TM8573T-6801 NX.V4EAA.001 15.6" i5-2450M 2.50GHz 4GB 320GB Win7
Acer TravelMate TM8573T-6603 LX.V4E03.141 15.6" LED i3-2330M 2.20GHz 4GB 500GB
Acer TravelMate TM8573T-6603 LX.V4E03.141 15.6" LED i3-2330M 2.20GHz 4GB 500GB
Acer TravelMate TM8573T-6603 LX.V4E03.141 15.6" LED i3-2330M 2.20GHz 4GB 500GB
Acer TravelMate TM8573T-6603 LX.V4E03.141 15.6" LED i3-2330M 2.20GHz 4GB 500GB
Acer TravelMate TM8573T-6443 LX.V4E03.142 15.6" LED i5-2430M 2.40 GHz 4GB 750GB
Acer TravelMate TM6595T-6427 NX.V4BAA.001 15.6" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6595T-6427 NX.V4BAA.001 15.6" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6595T-6427 NX.V4BAA.001 15.6" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6595T-6427 NX.V4BAA.001 15.6" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6595T-52544G?50Mtkk 15.6" LED Notebook In Core i5 i5-2540M
Acer TravelMate TM6595T-2544G5?0Mikk 15.6" LED Notebook In Core i5 i5-2540M 
Acer TravelMate TM6495T-6653 NX.V48AA.001 14" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6495T-6653 NX.V48AA.001 14" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6495T-6653 NX.V48AA.001 14" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6495T-6653 NX.V48AA.001 14" i5-2540M 2.60GHz 4GB 500GB Win7
Acer TravelMate TM6495T-52544G?50Mtkk 14" LED Notebook In Core i5 i5-2540M 2
Acer TravelMate TM5760-2434G50?Misk 15.6" LED Notebook i5 NV GT450M LX.V4C03.003
Acer TravelMate TM5760-2434G50?Misk 15.6" LED Notebook i5 NV GT450M LX.V4C03.003
Acer TravelMate TM5760-2434G50?Misk 15.6" LED Notebook Core i5 HDMI LX.TXH03.042
Acer TPM653-V9892 Laptop i7-3520M 8GB RAM 500G HDD 15.6" DVDRW NX.V7GAA.002
Acer TPM653-V6499 Laptop i5-3320M 4GB RAM 500G HDD W7P 15.6" DVDRW NX.V7GAA.001
Acer TPM643-V6629 Laptop i5-3320M 4GB RAM 500G HDD 14" DVDRW W7P NX.V7KAA.001
Acer TPM643-M9820 Laptop i7-3520M 8GB RAM 500G HDD 14" W7P DVDRW NX.V7HAA.002
Acer TPM643-M9820 Laptop i7-3520M 8GB RAM 500G HDD 14" W7P DVDRW NX.V7HAA.002
Acer TMP653-M9802 Laptop i7-3520M 8GB RAM 500G HDD W7P 15.6" DVDRW NX.V7EAA.002
Acer TMP653-M9802 Laptop i7-3520M 8GB RAM 500G HDD W7P 15.6" DVDRW NX.V7EAA.002
Acer TMP653M Laptop i3-2370M 4GB RAM 320G HDD 15.6" DVDRW W7P NX.V7EAA.003
Acer TMP643M Laptop i3-2370M 4GB RAM 320G HDD W7P 14" DVDRW NX.V7HAA.003
Acer TM8573TG-2524G?50Mikk 15.6" LED Notebook i5 4G 500G
Acer TM8573T-2314G3?2Mikk 15.6" LED Notebook i3 4GB 320G
Acer TM8573-6446W7P Laptop i5-2520M 4GB 500G 15.6" Webcam LX.V4D03.002
Acer TM6595TG-2628G?50Mikk 15.6" LED Notebook i7 8G 500G
Acer TM6595-6680W7P Laptop i7-2620M 8GB 500G NV GT540 8HRs LX.V4C03.004
Acer TM6595-6680W7P Laptop i7-2620M 8GB 500G NV GT540 8HRs LX.V4C03.004
Acer TM6595-6453W7P Laptop i5-2520M 4GB 500G 15.6" 8HRs LX.V4C03.003
Acer TM6594-6600W7P Laptop i5-580M 4GB 500G W7P ATI 5650 15.6" Webcam
Acer TM6495TG-2524G?50Mikk 14" LED Laptop i5 4GB 500G W7
Acer TM6495-6818W7P Laptop i5-2520M 4GB 500G W7P Webcam 14" LX.V4M03.055
Acer Aspire 7720 17-inch Notebook PC 6307
Acer Aspire 7720 17-inch Notebook PC 6307
Acer AS7540-1493 AMDx2 4GB 320GB BluRay W7HP64 17.3 LED
Acer Altos S300 SCSI Ultra 320 storage cabinet
ACE-4710-K9 Cisco Application Control Engine- Application accelerator
ACE-4710-K9 Cisco Application Control Engine- Application accelerator
ACE20-MOD-K9 CISCO 6500 APP ENGINE ACE20MODK9ACE?20MOD W/1YR 
ACE20-MOD-K9 CISCO 6500 APP ENGINE ACE20MODK9ACE?20MOD W/1YR 
Accton ES4549 48 Port 44 10/100/1000 4/SFP L2 Giabit Ethernet Stackable Switch
Access Virus TI2 Desktop
Access Virus TI Desktop Synthesizer IMMACULATE
ABT 2711-B6C5X Allen Bradley Panelview 600 Touch Screen
Ablecom 600Watt Power Supply SP602-TS SP602-TS 
ABE7R16T111 MODICON I/O MODULE MP 250VAC EFAST 2 W/OPTIONS ABE7-R-16T111
ABB/PARAJUST DSQC 209/YB560103-A?L/YB 560 103-AL ANALOG I/O MODULE XLNT
ABB/PARAJUST DSQC 209/YB560103-A?L/YB 560 103-AL ANALOG I/O MODULE XLNT
ABB WACTHDOG  I/O MODULE NWIO-01 64168533
ABB SYSTEM 3BSE038415R1 -FS-
ABB SYSTEM 3BSE038415R1 -FS-
ABB PLC S900 AI950S I/O System Analog Input TI4-Ex Temperature Module 
ABB DSQC-239 YB560103-CH/10 REMOTE I/O BOARD DSQC239 
ABB DSQC 350 3HNE00025-1/13
ABB DSDX451 EXPANSION I/O MODULE 
ABB Control PLC 1SAP250100R000?1 AX5214 ANA.IN/OUT MOD 12 BIT 
ABB Control PLC 1SAP130100R000?1 PM571 CO 24 VDC 2X Serial FBP Display SD Slo
ABB Bailey DOT-100 PHBDOT10010000 Harmony Digital Output Module Block Infi 90
ABB AO890 S800 Analog intrinsic-safe?ty I/O for Modular AC 800M PLC
ABB Advant Station 520i w/ RTA Real-Time Accelerator
ABB ACH401B00932 A0AE0000 MOTOR SPEED DRIVE CONTROLLER
ABB ACH401B00632 A0AE0000 MOTOR SPEED DRIVE CONTROLLER
ABB 3HAC 3939-4 I/O MODULE 3HAC39394
Abb 3HAB 2214-1/2 ABB DSQC 315 Module Combination I/O 
Abb 3HAB 2214-1/1 ABB DSQC 315 Module Combination I/O 
AB REM I/O Comunications Module 1203-001 Ser A FRN
AB I/O chassis for 1746-A13 I/O modules
AB CompactLogix 1769-IF8 1769IF8 8 ch Analog Input 
AB Allen Bradley CompactLogix 1769-OF2 in factory box
A-B 845H-SJDZ24-CM?Y1 ENCODER OPTICAL INCREMENTAL 8-15VD
A-B 700DC-PK800Z24 CONTACTOR 24VDC 8 N.O 10A 600VDC 
A-B 700DC-PK400Z24 CONTACTOR 24VDC 4 N.O 10A 600VDC 
A-B 2755-L7SX5 LASER SCAN HEAD 2755-P/L/JVR28?2/06 REFU
A-B 2755-L5RBA LASER SCAN HEAD ENHANCED MEDIUM SPEED RE
A-B 1791-0A32 PLC I/O MODULE 32 POINT 120VAC .3A OUTPUT
AB 1747-SN scanner module of the remote input and output
AA986A HP Compaq MSA1500 Modular Smart Array Shelf
A3700A Model 12H AutoRAID Disk Array HP-UX MPE/iX RAID
A3700A Model 12H AutoRAID Disk Array HP-UX MPE/iX RAID
A1S-Y71 Mitsubishi PLC Output Module Module A1SY71
A1S-Y22 Mitsubishi PLC Triac Output Module A1SY22
A1SX42-S2 Mitsubishi PLC 64 Pt DC Input A1SX42S2
A1SJ61BT11 A1SX41 A1SY41
A1SD62 Mitsubishi PLC High Speed Counter Input 100KHz
A1S64AD Mitsubishi PLC Analog Input Module A1S-64AD
A1S-63ADA Mitsubishi PLC Analog Module A1S63ADA
A1S62RD4N Mitsubishi PLC RTD Input A1S-62RD4N
A/B SCANPORT MODULE  1203-SM1 COMMUNICATION MODULE 
8030-PS25 SYMAX POWER SUPPLY MODULE 
8030CRM275 MODICON SQUARE D SYMAX Passport Module 8030-CRM-275
8000 ex VAT 2 x Controllers 12 months 
777823X IBM BladeCenter JS23 JS43 2x IBM Power 6 4.2GHz16GB 1x 73GB SAS
7604-S323B-8G-?P CISCO 
7604-S323B-8G-?P CISCO 
7600-SIP-600 CISCO SPA PROCESSOR SIP600 7600SIP600 W/1 YR 
7600-SIP-400 Cisco 7600 Series SPA Interface Processor
7600-SIP-400 Cisco 7600 Series SPA Interface Processor
7600-SIP-400 CISCO 7600 SERIES PROCESSOR W/ 1YEAR 
7600-SIP-400 CISCO 7600 SERIES PROCESSOR W/ 1YEAR 
750-830 Wago Bacnet/IP programmable fieldbus controller
750-830 Wago Bacnet/IP programmable fieldbus controller
750-370 Wago PROFINET io fieldbus coupler 100 mBit 2-port digital and analog sig
750-354 Wago EtherCAT Fieldbus Coupler 100 mBit digital and analog signals
750-351 Wago SERCOS iii fieldbus coupler 100 mBit 2-port digital analog signal
750-348 Wago CANopen ECO fieldbus coupler D-SUB 10 kbaud 1 mBaud digital and a
750-347 Wago CANopen ECO fieldbus coupler mss 10 kbaud 1 mBaud digital analog
750-342 Wago Ethernet TCP/IP fieldbus coupler 10 mBit/s digital analog signals
750-340 Wago PROFINET io fieldbus coupler 100 mBit digital and analog signals.
750-338 Wago CANopen fieldbus coupler D-SUB 10 kbaud 1 mBaud digital and analo
750-337 Wago CANopen fieldbus coupler mss 10 kbaud 1 mBaud digital and analog 
750-334 Wago INTERBUS fieldbus coupler digital and analog signals LWL-connection
750-331Wago PROFIBUS DP fieldbus coupler 15 mBaud digital analog signals LWL
750-320 Wago II/O-lightbus fieldbus coupler 2.5 mBaud digital signals
750-319 Wago Lonworks® fieldbus coupler 78 kbps digital and analog signals.
750-316 Wago MODBUS fieldbus coupler RS 232 / 12 1152 kBaud digital analog
750-310 Wago fieldbus coupler CC-Link 156 kBaud 10 mBaud digital and analog 
750-307 Wago CANopen fieldbus coupler 10 kbaud 1 mBaud digital and analog 
750-305 Wago CAL fieldbus coupler 10 kbaud 1 mBaud digital and analog signals
750-300 Wago II/O-lightbus fieldbus coupler 2.5 mBaud digital and analog signals
750 ex VAT Free UK and EU Delivery Good condition
7304-NPE-G100 Cisco Network Engine1GB D/256MB F NPEG100 W/1YR 
7304-NPE-G100 Cisco Network Engine1GB D/256MB F NPEG100 W/1YR 
7300-PWR-AC CISCO 7304 AC POWER SUPPLY SPARE
7300-2OC12POS-?SMI 2 PORT OC12 POS LINE CARD FOR CISCO 7304
7300-1OC12POS-?SMI 1PORT OC12 POS LINE CARD FOR CISCO 7304 W/ SINGLE MODE
7300-1OC12POS-?SMI 1PORT OC12 POS LINE CARD FOR CISCO 7304 W/ SINGLE MODE
7206VXR/NPE-G1 ROUTER 1GB/512F Dual AC 1yr  CISCO NPEG1
7204VXR/400 CISCO ROUTER W/NPE-400 2FE DUAL AC NPE400 W/1YR 
7204VXR/400 CISCO ROUTER W/NPE-400 2FE DUAL AC NPE400 W/1YR 
7204VXR/400 CISCO ROUTER W/NPE-400 2FE DUAL AC NPE400 W/1YR 
72 stereo channels  30 mono channels  power supply
6ES7315-2EH14-?0AB0 SIMATIC S7-300 CPU 315-2 PN/DP CENTRAL PROCESSING UNIT
6ES7315-2AH14-?0AB0 SIMATIC S7-300 CPU 315-2DP CPU WITH MPI INTERFACE 
6ES7314-6CH04-?0AB0 SIMATIC S7-300 CPU 314C-2 DP COMPACT CPU WITH MPI
6ES7314-6BH04-?0AB0 SIMATIC S7-300 CPU 314C-2 PTP COMPACT CPU WITH MPI
6ES7313-6BG04-?0AB0 SIMATIC S7-300 CPU 313C-2 PTP COMPACT CPU WITH MPI
6ES7313-5BG04-?0AB0 SIMATIC S7-300 CPU 313C COMPACT CPU WITH MPI
6ES7313-5BG04-?0AB0 SIMATIC S7-300 CPU 313C COMPACT CPU WITH MPI
6ES7312-5BF04-?0AB0 SIMATIC S7-300 CPU 312C COMPACT CPU WITH MPI
6ES7312-1AE14-?0AB0 SIMATIC S7-300 CPU 312 CPU WITH MPI INTERFACE
6ES7-215-2BD00?-0XB0 Siemens 6ES72152BD000X?B0 N320
6ES7214-1HE30-?0XB0 SIMATIC S7-1200 CPU 1214C DC/DC Relay
6ES7214-1BE30-?0XB0 SIMATIC S7-1200 CPU 1214C AC/DC Relay
6ES7212-1BD30-?0XB0 Simatic S7-1200 Relay
6ES7212-1AD30-?0XB0 SIMATIC Simatic S7-1200 Relay
6ES7211-1BD30-?0XB0 CPU 1211C Simatic S7
6ES7211-1AD30-?0XB0 CPU 1211C Simatic S7
6ES7158-0AD00-?0XA0 COUPLER DP/DP DISTRIBUTED I/O
6ES7 132-0HH01-0XB0 MODULE 16RO 120/230VAC 2/4A ET200B
6ES5470-4UA13 SIEMENS NIB 1 YEAR GUARANTEE
6ES5431-7LA11 6ES54317LA11  1 YEAR 
6ES5420-4UA14 Siemens 6ES5-420-4UA14 N13
69Y1909 IBM Brocade Converged 10GbE Switch Module
6947 -No Box Marel MC88-B Control Module
680TVL 592X Power Zoom WDR IP66 Indoor  Outdoor 24V Built-in Fan and Heater
680TVL 592X Power Zoom WDR IP66 Indoor  Outdoor 24V Built-in Fan and Heater
680TVL 592X Power Zoom WDR Indoor  Outdoor 6" Outdoor High Speed Dome Camera
6000 ex VAT Free UK/EU UPS delivery Good condition
600 excluding VAT Free FAST UK delivery
600  VAT FAST Worldwide UPS delivery
60 HP AC Tech Variable Frequency Inverter 400-480 V 3 Phase 77 Amp Made In USA
571956-B21 HP Virtual Connect FlexFabric 10Gb/24-Port 4 c-Class Blade HP RE
5643  Omron C200H-DA002 Analog I/O Module
538113-B21 HP 10GbE Ethernet Pass-Thru Module for c-Class BladeSys 504624-B21
530TVL SONY Original Module 432X WDR   Night 12pcs IR LEDs up to 330ft OSD
530TVL SONY Original Module 432X WDR   Night 12pcs IR LEDs up to 330ft OSD
520VE-EOD Allen Bradley size 4 multi speed contactor 502VEEOD F334
5150-RS 5150RS SERIES A SCANNER NIB 1 YEAR WARANTY
5150-RS 5150-MRS SERIES A  1 YEAR WARANTY
50pcs USB to 2 CH Audio box with line in  out aux in
50pcs USB to 2 CH Audio box with line in  out aux in
507017-B21 HP BLc7000 Enclosure 3Phas 6PS 10Fan license HP RE3yr Warr
505-7038 Texas Instruments/Si?emens TI 5057038 R33
505-2555 Texas Instruments/Si?emens TI 5052555 R5
501-6955 SUN T2000 I/O MODULE NON-ROHS PKX/NH-B2N5-1C
500-5056 Texas Instruments Siemens TI 32 pt output module 5005056 N170
500-5056 Texas Instruments Siemens TI 32 pt output module 5005056 N110
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 Year Next Business   on All NetApp
5 inch TFT LCD WiFi Laptop Tablet Touchpad MID UMPC
4x LONGLINE GLC-SX-MM for Cisco SFP1000 Base
4X GLC-T for Cisco SFP Gigabit Transceiver 
4PIN ROSENBERG BMW PAS VIDEO INTERFACE
499NES18100 Modicon / Schneider ConneXium 8TX 10/100 Switch 499-NES-181-00
499NES18100 BRAND Modicon ConneXium 8TX 10/100 Switch 499-NES-181-00
48 10/100/1000Bas?e-T WS-C3750X-48T-?S
48 10/100/1000Bas?e-T 4 x SFP mini-GBIC 1 x Stacking Module WS-C2960S-48LP
48 10/100/1000Bas?e-T 4 x SFP mini-GBIC 1 x Stacking Module WS-C2960S-48FP
48 10/100/1000Bas?e-T 2 x XFP 1 x Stacking Module WS-C2960S-48TD?-L
48 10/100/1000Bas?e-T 2 x XFP 1 x Stacking Module WS-C2960S-48LP?D-L
48 10/100/1000Bas?e-T 1 x Stacking Module 2 x XFP WS-C2960S-48FP?D-L
46TB of Dell JBOD SAS Storage in Only 2U of Rack-space
46M6181 IBM BladeCenter 10Gb Ethernet Pass-Thru Module 
46M6071 IBM Cisco Nexus 4001I Switch Module 46M6072 
46C7191 IBM BNT VIRTUAL FABRIC 10GB SWITCH MODULE 
455880-B21 HP Virtual Connect Flex-10 Switch C-Class BladeSystem HP RESeald
455880-B21 456095-001 HP VIRTUAL CONNECT 10GB ETHERNET 
451439-B21 HP BLc Cisco Catalyst 1/10GbE 3120X Blade Switch HP Re
44X1921 IBM Brocade 8Gb 10-Port SAN Switch Module 
44X1920 IBM Brocade 8Gb 20-Port San Switch Module 
44X1920 IBM Brocade 8Gb 20-Port San Switch Module 
44W4404 IBM BNT 1/10GB UPLINK ETHERNET SWITCH MODULE 
44W4404 IBM BNT 1/10GB UPLINK ETHERNET SWITCH MODULE
43W4395 Cisco Catalyst Switch Module 3012 for IBM BladeCenter FRU 43W4404
43W3584 IBM BladeCenter S SAS Raid Controller Module
42C1828 IBM Brocade 8Gb Enterprise 20-port San Switch 
42C1828 IBM Brocade 8Gb Enterprise 20-port San Switch 
4200992L1 Adtran NetVanta 5305 Access Router With T3 Wide Module 2 x 10/100B
411085-001 HP DUAL PORT U320 SCSI I/O MODULE FOR MSA30
4100-234 ALLEN BRADLEY IMC S CLASS COMPACT 4 AXIS MOTION CONTROLLER
400 ex VAT WITH 16 x SFP GBICS FAST UPS DELIVERY
400 ex VAT In HP StorageWorks 5300 Tape Array
400 ex VAT Free UK and EU Delivery Good condition
4 x WS-G5486 1000BASE-LX/LH LONG HAUL GBIC FOR CISCO S.MODE OR M.MODE
4 x SFP mini-GBIC 2 x XFP 48 x 10/100/1000Bas?e-T GSM7352S-200NA?S
4 x SFP mini-GBIC 2 x XFP 24 x 10/100/1000Bas?e-T GSM7328S-200NA?S
3X-KFMHA-AA Add on I/O module for high performance I/
3Ware LSI00251 9750-24i4e SGL SAS 24 int. 4 ext. RAID
3Ware LSI00251 9750-24i4e SGL SAS 24 int. 4 ext. RAID
3Ware LSI00251 9750-24i4e SGL SAS 24 int. 4 ext. RAID
3Ware LSI00251 9750-24i4e SGL SAS 24 int. 4 ext. RAID
3G2-IM211-E OR B500-IM211-E OMRON 3G2IM211E
3G2S6-CPU35 Omron PLC CPU 3G2S6CPU35 
3G2C7-MC224 Omron PLC Expansion C20-MC224
3G2A5-RM001-E Omron PLC Remote I/O Master 3G2A5RM001E
3G2A5-OD411A Omron PLC DC Output 3G2A5OD411A
3G2A5-DA001 Omron PLC Analog Output 3G2A5DA001
3CSFP91 1000BASE-SX SFP FOR 3COM 850NM TRANSMITTER WAVELENGTH UP
3COM SWITCH 8810 STARTER KIT 3C17501A
3COM SWITCH 4060 SWITCH 18-PORTS EN FAST EN GIGABIT EN 10BASE-T 3C17709US
3Com SuperStack 4 Switch 5500G-EI SFP 24 -Port 3CR17259-91 /3CR17258-91
3COM NBX V3000 Analog 4-Port IP Phone System 3C10600A SEE DESCRIPTION
3COM 3CS7910E Switch S7910E Chassis Kit
3com 0231A76V S7500E 24-1000BASE T10GBASE-XJD?206a
3C17502 HP SW8807 STARTER KIT
3500 excluding VAT Tested Free Worldwide delivery
3-424-1890A Cincinnati Milacron I/O Chassis 3-531-3849A
335921-B21 HP StorageWorks MSA20 Smart Array
32R1783-Nor 10 Gigabit Uplink Ethernet Switch Module
32R1783-Nor 10 Gb Uplink Ethernet Switch Mod 32R1785
32R1783-Nor 10 Gb Uplink Ethernet Switch Mod 32R1785
3200 ex VAT Good Condition Fast UPS delivery
32 Channel Digital Console
31542  Allen Bradley 1746-NI041 I/O Module 8 Point Relay
30106  Allen Bradley SLC500MCR Remote I/O Adapter Module
3000 exVATDell 24/7 365 Pro-Support on-site 
3.6GHz Quad Core 1TB 8GB RAM Alame Galaxy II Home/Media Desktop Computer PC
3 Year Next Business 
3 YEAR MANUFACTURE  INCLUDED IN ORIGINAL BOX
3 axis driver kit CNC Stepper Motor Driver 24-55VAC 2-6A Mircostepping 
2xVC HP 1/10Gb 2xVC 4Gb VC Fibre Channel-120Vor 240V
2x QSC KW122 Powered 12" Speakers KW 122 BBE 882i Sonic Maximizer Stands Cables
2x QSC K12 Powered 12" Speakers K-12 BBE 882i Sonic Maximizer Stands Cables 
2x QSC K10 Powered 10" Speaker and BBE 482i Sonic Maximizer Audio Enhancer K 10
2U Storage Server NM46X 2x AMD Opteron 2214 Dual Core 2.2Ghz 32GB RAM 250GB 191W
2U Storage Rackmount Server 2x AMD Opteron 2220 Dual Core 16GB RAID 4x 250GB
2U Storage Rackable Server NM46X 2x AMD Quad Core 2356 16GB 1x 250GB 207W Power
2U Server NM46X 2x AMD Opteron 2356 2.3Ghz Quad Core 32GB RAM 250GB NM46X V1.10
2U Server NM46X 2x AMD Opteron 2356 2.3Ghz Quad Core 16GB RAM 250GB NM46X V1.10
2U Server 2x AMD Opteron 2214 Dual Core 16GB RAM 2x 250GB RAID NM46X 191W
2U Rackmount Rackable Server 2x AMD Opteron 2356 Quad Core NM46X 16GB 4x 250GB
2U Rackable VMWare ESX Server NM46X 2x AMD Opteron 2214 16GB 2x 250GB 191W
2U NM46X Server 2x AMD Opteron 2356 Quad Core 32GB RAM 2x 250GB SATA Hard Drive
2Port E1/T1 Hardware Echo Cancellation Asterisk trixbox
29H4371 IBM 1-Port ATM I/O Module
29H4370 IBM 1-Port ATM I/O Module for 8260
2803-VIM2 SERIES A REV A 1 YEAR GUARANTEE
2803-CSM1 SERIES A REV A  1 YEAR 
2803-CM SERIES A REV A  1 YEAR   NIB
2711E-K14C6X Allen-Bradley AB PanelView 1400e Terminal Ser. E Frm 5.14 
26L0400 IBM WAN Module
26K654725R539?1 Cisco Fiber Inligent Switch Module
25 x 900GB 10K 2.5" SAS  3 YEARS  
24V Built-in Fan and Heater 680TVL 592X Power Zoom WDR IP66 Indoor  Outdoor
24P8224-1722-8?850-IBM DS4300 16 to 64 Partition License
24P8222- 1722-8863 / 8864- IBM DS4300 8 to 64 Partition
24P8219-1722-7?354-IBM DS4300/FASTt60?0 FLASH/VOLUME COPY
24P82171722-7?351- IBM DS4300/FASTt60?0 FlashCopy Option
24P8151- 1722-7362 -IBM DS4300 2nd EXP700/EXP710/?EXP810
2400 ANSI LUMENS .with I/O Module
240  VAT Tested
24 10/100/1000Bas?e-T 4 x SFP mini-GBIC 2 x SFP 2 x I/O Module GSM7228PS
24 10/100/1000Bas?e-T 4 x SFP mini-GBIC 1 x Stacking Module WS-C2960S-24TS
24 10/100/1000Bas?e-T 1 x Stacking Module 4 x SFP mini-GBIC WS-C2960S-24PS
24 10/100/1000Bas?e-T 1 x Stacking Module 2 x XFP WS-C2960S-24PD?-L
24 10/100/1000Bas?e-T 1 x Network Module WS-C3750X-24T-?L
220 Mhz Repeater or 220 Base Station will do both
220 Mhz Repeater 20 Watts
20280 -No Box Allen-Bradley 1769-SDN Compact I/O Module
2011date Allen Bradley 1756-EN2F/B ControlLogix EtherNet/IP Fiber Bridge
2011 mfg date 1794-IE8 Allen Bradley FlexLogix Analog input 1794IE8 N356
2011 date Allen Bradley 1769-PA4 Compact I/O Power Supply
2011 Allen Bradley AB 1756-EN2T / C ControlLogix EtherNet/IP Bridge
2010 Model with Dual Core [Offer 55 for 4GB RAM]
2010 date Mitsubishi QY81P Q-Series 32 points Transistor Output Module
2010 date Allen Bradley 1746-OW16 Series D SLC500 Output 
2010 Allen-Bradley 1794-IF2XOF2I Isolated Analog 1794-1F2X0F21
2010 Allen Bradley AB 1756-EN2T / C ControlLogix EtherNet/IP 10/100 Bridge
2008 mfg date 1794-IE8 Allen Bradley FlexLogix Analog input 1794IE8 N314
2007 mfg in LNC 1746-NO4V Allen Bradley SLC 500 1746NO4V N305
2007 mfg 1746-NIO4V Allen bradley 1746NIO4V D102
2000 ex VAT Good condition tested free FAST UK del
20 x GLC-SX-MM for Cisco SFP LONGLINE
20 x GLC-SX-MM for Cisco SFP LONGLINE
2 x HWIC 1 x Services Module 2 x CompactFlash CF Card 2 x 10/100/1000Bas?e-
2 x HWIC 1 x Services Module 2 x CompactFlash CF Card 2 x 10/100/1000Bas?e-
2 FANUC A03B-0405-B001  A16B-1500-0021 Servo CPU Cards
1-Year  
1U Supermicro Barebone Server CSE-811T-260B M2N-LR MB
1U Server Dual Xeon 4-Core 2.4GHz 64GB RAM 1.5TB HDD
1U Server 2.66GHz 2x 4-core Xeon 8x 300GB SATA 48GB RAM
1U Server 2.4GHz 2x 4-core Xeon 2x 500GB SATA 12GB RAM
1U 10 Drives 2.5" SFF SATA to Fibre RAID Hard Disk Drive Array with controller 
1U 10 Drives 2.5" SATA/SSD to Fibre RAID Storage Array External Enclosure 
1Ghz HP Compaq t5700 Thin Client Windows XP PXE IE 12 available
19811 Modicon 110CPU51201 CPU Module AC I/O 115V
1900 ex VATdual 4Gb FC controller which supports SATA
19" 4U CompactPCI In NetStructure 8  cPCI Chassis MPCHC5091 Enclosure
1800 ex VAT Free UK/EU Delivery
1797-OE8 Allen Bradley FlexLogix 1797OE8 N383
1797-IRT8 Allen Bradley FlexLogix 1797IRT8 N375
1794-OF4I Allen Bradley Flex I/O 1794OF4I 2009 mfg date N315
1794-IT8 1794IT8 SERIES A 1 YEAR GUARANTEE NIB
1791-OA32/ B Allen Bradley 1791OA32 F285
1791-NDV Allen Bradley 1791NDV N12
1791-IOBX Allen Bradley 1791IOBX G-380
1791-IOBW SERIES A FACTORY REFERBISHED 1 YEAR 
1791-IOBW SERIES A  1 YEAR 
1791-24BR series B Allen Bradley 179124BR N905 
1791-24BR series B Allen Bradley 179124BR N80 
1791-24B8 Allen Bradley Block I/O 179124B8 N829
1791-0B16 17910B16  1791-OB16 1 YEAR GUARANTEE
1786-RPFRL/B Allen Bradley FlexLogix 1786RPFRL N979
1786-RPA series B Allen Bradley Flex I/O ControlNet Repeater 1786RPA N70
1774-TL2 SERIES C FIRMWARE REV C  60  GUARANTEE
1774-SR SERIES B 1774SR I/O SCANNER MODULE REMOTE  1 YR RETURN POLICY
1772-LN1 SERIES B FIRMWARE REV 1  1 YEAR  
1772-LN1 SERIES A FIRMWARE REV E 1772LN1 1 YEAR RETURN POLICY 
1771-SN SERIES A REV D WIRING TERMINAL INCLUDED  1 YEAR  
1771-SN SERIES A REV D NIB 1 YEAR  
1771-SDN/C Allen Bradley PLC 5 DeviceNet Scanner 1771SDN S19
1771-QI/B Allen Bradley Coinject Module 1771QI N760
1771-QH SERIES A FIRMWARE REV B  1 YEAR WARANTY 
1771-QH SERIES A FIRMWARE REV A  1 YEAR WARANTY 
1771-QH Allen Bradley PLC 5 1771QH N220
1771-QDC SERIES B REV C WITH ARM 1 YEAR  
1771-QDC ALLEN BRADLEY MODULE SERIES C REV C WITH ARM  1 YR 
1771-NT1 SERIES A FIRMWARE REV C ALLEN BRADLEY 1 YEAR 
1771-M3 1771M3- SERIES B REV D  1 YEAR 
1771-LI SERIES A REV E 1 YEAR   1771LI
1771-ISC SERIES A REV 2 1 YEAR   1771ISC
1771-IR/B Allen Bradley RTD Input Module 1771IR N997
1771-IR Allen Bradley PLC 5 RTD Input 1771IR N755
1771-IQC NIB 1 YEAR  ALLEN BRADLEY
1771-IKC SERIES A REV E W/WIRING ARMS 1 YEAR 
1771-IKC Allen Bradley PLC 5 Encoder 1771IKC
1771-IKC 1771 IKC SER.A REV. G MODULE W/ WIRING ARMS 1 YEAR  
1771-IJC SER A  FIRMWARE REV G 1 YEAR GUARANTEE
1771-IJ SER A FIRMWARE REV H INCLUDES MANUAL 1 YEAR  
1771-IE04 SERIES A REV D WITH ARM 1 YEAR 
1771-IE01 SERIES A REV D  1 YEAR 
1771-IAN Allen Bradley AC Input module 1771IAN N772
1771-HS3A SERIES A  FW REV 1.00 1 YEAR 
1771-HS3A SERIES A  FW REV 03.00/1.22 includes 1771-HM3A 1 YEAR  NIB
1771-HRA 1771HRA IMC-120/123  1 YEAR