1C31164G02
自备电厂有大量风机和水泵，系统处于低负荷运行时，通过关小挡板或阀门来调整风量及流量。此时，电动机输出功率大量的能源消耗在挡板上，节流损失很大。异步电动机在直接启动时，启动电流一般达到电动机额定电流的5-7倍，启动电流过大将造成电网电压波动，影响其他电气设备的正常运行，而高压变频器调速装置可以实现电机的软启动，通过调整频率来改变电机转速，满足不同负载的工艺要求，节能效果显著。 1、引言 包头希望铝业热电厂总装机容量1320MW，电厂一期4*155MW机组、二期2*350MW机组已全部并网发电。电厂现有2台155MW凝汽式发电机机组运行，随着电网内大机组的相继投产，该厂的调峰任务越来越重，峰谷差日益增大，根据现场运行资料统计，155MW机组每日的负荷一般在73.6MW左右。系统处于低负荷运行时，系统相关设备也要随着负荷的变化作相应的调整，必须通过关小挡板或阀门来调整风量及流量。此时，电动机输出功率大量的能源消耗在挡板上，节流损失很大。异步电动机在直接启动时，启动电流一般达到电动机额定电流的5-7倍，启动电流过大将造成电网电压波动，影响其他电气设备的正常运行，同时电动机自身绕组严重发热，加速绝缘老化，缩短使用寿命。而高压变频器调速装置可以实现电机的软启动，通过调整频率来改变电机转速，满足不同负载的工艺要求，是解决以上矛盾的有效手段。 2、高压变频器调速节能原理 2.1 高压变频器工作原理 高压变频器是利用电力半导体器件的通断作用将工频电源变换为另一频率的电能控制装置。它是按一定规律改变脉冲列的脉冲宽度或幅度，以调节输出量和波形的，从而实现电动机电压和频率的平滑变化。 1C31164G02
1C31164G02
_________________________________________ 〖厦门光沃自动化设备有限公司 竭诚为您服务〗 〖联系人：欧先生 〗 〖手机：18030229053(微信同号) 〗 〖QQ: 2479261344 〗 〖传真：0592-5709825 【价格】如此低价,仅此一家 【货期】大量现货,下单后即可发货 【质量】全新原装,进口*** 【保障】产品经过专业检测，质保一年,15天包退换 【品牌】Allen-Bradley罗克韦尔、ABB、本特利Bently 3500系统卡件、GE、艾默生西屋等模块卡件 ______________________________________________
DYNAX Atoms DMC-2X DNX1312 Drive NEW SPARE
POLE STAR DSAS-L Ship Security Alert SKYWAVE DMR-200
New G-SCAN KIA MOTORS Automobile Diagnostic General
KROM SCHRODER FLAME DETECTOR IFS110IM-10/1/1 NEW
Nortel I2004 IP Phone NTDU82ba EtherGray NEW
LUCENT PCBR850-Predist?ortionCDMA Baseband RADIO 44WR87
Thrane & Thrane DC AC Battery Alarm module 51564 24 97
DLPCinema 1.45-2.05:1 High Brightness Len 108-335102-01
DLPCinema 1.25-1.45:1 High Brightness Len 108-274101-01
STULZ Cosmotec Industrial Cooling EHE2800220Z000K 220V
Lot 1000 HP touch screen HPCR01
New SIEMENS 5WG1 263-1EB11 BINARY INPUT DEVICE
USED Messer Sesomat ALFA Controller 768.01030
Lot of 27 VITESSE VSC7153SS-02 chips 0736 NEW
Nippon MS Compact Motorized Ball Valve AM2MS205UUP NEW
ERICSSON ROF1377846/1 R1D ETB/ETP Board New
Maxatec DP1012.0100Z-R Printer new no accessories
Lot 3000 ST Micro electronics P0102BL5AA4 new $0.1/PC
Telemecanique ATV61HC16N4 160KW 250HP Burned for Parts
Boeing 65B03189-37 607XZO SEAL Fabric Covered Rubber
New OMRON S82J-05024D POWER SUPPLY
HP Agilent 05518-60003 Laser Control Reference Board
Lot 10 Bimetal thermostat PST3-RJ001 Pacific Controls
AIS-CTRX classe B transponder True Heading 20060701-1
Phoenix Contact IBS CT 24 IO GT-T IBSCT24IOGT-T InterBu
Lot 8 OMRON Relays MY4N 200/220vAC MY4N-D2 24VDC NEW
New OMRON H3CR-H8L 0.6M-12M Delay TIMER 24VDC/AC
New OMRON H3CR-H8L 0.6M-12M Delay TIMER DC100-125V
OMRON H3CR-H8L 0.6s-12s Power Off Delay TIMER AC120V
Lot 500 Tantalum Capacitor T496C106M016AS 10UF 16V 20% Honeywell DATAMATE 9303004 DM100PS1WG PressureTransmi?tt
Honeywell Model EA PressureTransdu?cer 9308308 0-300psig
Honeywell MLH150PSL01B *2 MLH016BSM01B *1 Sensors
Lot 3 Honeywell MLH700SCD1206 MLH Pressure Sensors
Lot 3 Honeywell MLH250PSP14A MLH Pressure Sensors
Lot 3 Honeywell MLH010BGD14E MLH Pressure Sensors
New HBM LOAD CELL S40/50KG 0.03%
NeoScale CryptoStor Tape 700 SC702R NEW
Gigahertz Solutions High Frequency Analyser HF 59B AsIs
OCCAM 6151-01 Lifeline POTS blade New
BW 118219 M5-PR-1 Motorized Pump Yellow GasAlertMicro 5
MITSUBISHI FX2N-16MR-ES/UL PLC Module & FX2N-232-BD NEW
Smema Interface Module 60.009.037 NEW
Lam RESEARCH Node Board 810-800256-005 Rev A New
Lot 3 Honeywell 04359FFFF-60 MLH Pressure Sensors
MITSUBISHI MELSEC NET/MINI-S3 A1SJ71PT32-S3 NEW surplus
MITSUBISHI MELSEC A/D CONVERTER UNIT A1S64AD NEWsurplus
Lot 3 Honeywell DG 9251325 9251316 9250908 PressureTran
MITSUBISHI MELSEC POWER SUPPLY A1S63P LikeNEW
Lot 3 Honeywell MLH250PSB01D Pressure Sensors
Lot 3 Honeywell MLH550BST12A MLH550BST10E MLH08KPST12A
HP 409303-001 FAN HEATSINK for DC5750 etc NEW
Honeywell ECLIPSE Pressure Transducer 9253540
Honeywell ABHP Pressure Transducer 9220106 0-6PSIG
Honeywell ABHP Pressure Transducer 9220706 0-25PSI
Honeywell ABHP Pressure Transducer 9222502 200PSIG
New Woodhead 5136-DNP-ISA SST DeviceNet Interface card
Lot 3 Honeywell ML025BS2PG ML025PG1PG ML250BS2PR10
Lot 3 Honeywell 19C050PA1K/SZ75?94 Pressure Sensors
Lot 3 Honeywell 19C010PG5K Pressure Sensors
Lot 3 Honeywell 19C050PG3K Pressure Sensors
VersaCAT TEST SYSTEM 3M Austin Metrology LAB
SIEMENS CPB2 PROFIBUS 6ES7090-0XX84-0?FF5 new
Honeywell Pressure Instrument Druck DPI 701 installed
Lot 450 W3008H W3008 H90-OY805-F09P0?2 PULSE Rev 0.3
DASA TECH IROBO 4 axis robot controller Used For Farts
Lot 200 CRYSTAL 7.3728MHZ 20PF FOXSLF/073-20 0.15/pc
dSPACE ds1103-06 PPC controller board USED Spare
Danfoss MBT 153 084Z6036 cable Temp Sensor & 084Z6051
Danfoss MBT 5111-1101-0315-?111 Temp Sensor
Danfoss MBV 5000-2211 061B7005 Test Block Valve
Danfoss MBV 5000-1211 061B7001 Test Block Valve
Danfoss MBV 5000-1111 061B7000 Test Block Valve
Danfoss MBC 5100 1011-1DB04 061B000566 Pressure Control
Danfoss MBC 5100 1211-1DB04 061B005866 Pressure Control
Danfoss MBS 5100-2011-1DB04 Pressure transmitter
Danfoss MBS 3100 060G1464 with a 10bar Pressure Gauge
Danfoss MBS 3100 060G1464 Pressure Sensor
Danfoss MBS 33M 060G3124 Pressure Transmitter Sensor
Danfoss MBV 3000 061B6100 Test Block Valve
SKC AirChek 52 224-52 & Charger Power Flex 223-2000
TER Wire Controller 52312604 NEW
Used Thrane & Thrane TT-3022D 403022D & TT-3005M Antena
T46 Year of the monkey 1980 USED Fixed No.7
T46 Year of the monkey 1980 USED good No.4
T46 Year of the monkey 1980 USED Perfect No.1
T46 Year of the monkey 1980 USED Fixed No.6
T46 Year of the monkey 1980 USED good No.3
T46 Year of the monkey 1980 USED Perfect No.5
T46 Year of the monkey 1980 USED Perfect No.2 Lot of 2 AD2S80ATE chips ADI Analog Device
Lot of 2 AD2S80ABD chips ADI Analog Device
AD677BD ADI Analog Device & 2 ADM561JR & 2 ADM561JRZ
S41 Great Hall S42 Railway Station S45 Miltary Musem
S67 1964 Scott#799-803 Petroleum industry Canceled
C88 1961 40th Anni of CPC Canceled
Lot of 200 chips hiFn 7711PT6/3 7711PT6 New
lot of 2500 LINEAR LTC1430CS#TR Voltage Regulator chips
500 Tyco Raychem TR600-160-B-0.5?-0.235 Resettable Fuses
PMC-SIERRA PM7366-RI $15/pc date:0034
Lot of 450pcs Xilinx XC4005XL-09VQ10?0C
lot of 1600 SAMTEC 62549-01-S Connetors
IFC200-45B 200W KODAK POWER SUPPLY 3E1747
2880PCS ITT Cannon KSS Tactile Switches SPST-NO KSS221G
Agilent GMT-2-HP 100CC NEW
Agilent BOT-2 750CC Big Oxygen Trap 1/8
Lot of 50 Xilinx XC17128XVC 17128XVC XC17128 $1.5/PC
Agilent RMSH-2 Big Universal Trap 1/8" fittings NEW
Agilent BMT-2 Trap Big H2O 1/8" New
Lot of 1000 MICRON MT48LC2M8A1TG-8?B 2M sdram chips
Agilent Trap BHT-2 750cc 1/8"
Agilent G1999-80410 Chemical Ionization Gas Purifier
Agilent IOT-2-HP Indicating O2 Trap
Refurb Agilent 8648C Synthesized RF Signal Generator
HOMMEL-MOVOMATI?C DM205 & Controller 15343.8030 ETAMIC
VAT 07512-VA24-AAZ2?/0693 Rectangular Door L Slit Valve
B&R Acopos 1045 Servo drive USED AC110 AC122 AC123 inst
New EUCHNER RIEGEL NZ-A Safety Bolt 057734
New EUCHNER RGBF06D12-502-M Limit Switch 082316
New EUCHNER GSBF03R12-502-M Limit Switch 085920
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