IC698PSD300
IC698PSD300
IC698PSD300
IC698PSD300
我国现行的火电设计规程SDJ-79规定，燃煤锅炉的送、引风机的风量裕度分别为5%和5%～10%，风压裕度分别为10%和10%～15%。这是因为在设计过程中，
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《邮@.com》很难准确地计算出管网的阻力，并考虑到长期运行过程中可能发生的各种问题，通常总是把系统的最大风量和风压富裕量作为选择风机型号的设计值。但风机的型号和系列是有限的，往往在选用不到合适的风机型号时，只好往大机号上靠。这样，电站锅炉送、引风机的风量和风压富裕度达20%～30%是比较常见的。锅炉送、引风机的用电量中，很大一部分是因风机的型号与管网系统的参数不匹配及调节方式不当而被调节门消耗掉的。同时，发电厂的负荷必须要跟随用户的使用状况而改变，发电机的负荷调节必然要求锅炉跟随而动，相应的送引风机等也必须进行调节，在调节的过程中又有大量的能量被浪费了。因此，改进离心风机的调节方式是提高风机效率，降低风机耗电量的最有效途径。
风机和水泵都是流体机械，由流体动力学可知，流量Q∝n，压力H∝n2，电机功耗N∝n3。当流量由额定值Q0降至Q1时，与额定功耗N0相比较，采用转速调节的电机的功耗为：
Nt=（n1/n0）3N0
如流量有下降到50%，则转速相应降到50%，压力降到25%，而电机功耗降到12.5%，也就是节约电能87.5 %。扣除节门调节时的功耗与额定功耗的差、转速下降可能会引起电机的效率下降等因素，节电效果也是非常显著的。
三、单元串联多重化电压源型变频器的基本原理
成都东方凯奇电气有限责任公司利用单元串联多重化技术，生产出功率为110kVA～7100kVA的无电网污染(DFCVERT-MV)高压变频器，无须输出变压器实现了直接3kV、6kV或10kV高压输出；国内首家在高压变频器中采用了先进的IGBT功率开关器件，达到了完美无谐波的输出波形，无须外加滤波器即可满足供电部门对谐波的严格要求；输入功率因数可达0.95以上，THD<1％，总体效率（包括输入隔离变压器在内）高达97％；对电机无附加硬力，将大大延长电机的使用寿命。
Tencor vacuum drv/sensor assy 181137
KLA-Tencor 200mm Finger Fork
KLA-Tencor 301 I-Line RF Bench 2
KLA-Tencor Tropel 15X Objective 29-0260
BERTAN HIGH VOLTAGE POWER SUPPLY 0-30KV HV KLA TENCOR
KLA-Tencor Cobra Shipping Filter Assy 0
KLA-Tencor M1 3XX-I Active Mirror 1 New
Tencor instruments TF1 analog/interface assy 104078
KLA-Tencor SLX Preamp Assy. 1
KLA-Tencor SLX RF Bench Assy. 1
KLA-Tencor AIT APS Tower/Center Block 0071149-001
KLA-Tencor 5300 AMS Assy 2
KLA-Tencor Dalsa CCD Camera
Tencor instruments power controls 105570
KLA-Tencor Asyst LinkManager 9700-8533-01
KLA-Tencor 3XX-I Reflected Light Detector760-321399-000
KLA-Tencor AMS Assembly 02
KLA TENCOR P11 Long Scan Surface Profiler
KLA-Tencor SM300 (SpectraMap) Thin Film Mapping Tool
KLA-Tencor Dual Needle Gun LD Head 0054362-000
KLA /TENCOR Wafer Handler for RS-55
KLA-Tencor 47 SMC Chiller INR-244-626B
KLA-Tencor 47 SMC Chiller INR-244-626B
KLA-Tencor Sharp 15" LCD Monitor 0095643-000
KLA-Tencor Transfer Arm Motor
KLA-Tencor SLX MAC Box Assy. 1
Tencor instruments 4 channel motor control assy 283762
KLA-Tencor Rotary Transfer Arm
KLA-Tencor Laser Mod 0 New
KLA-Tencor Preamp Assy. 0 untested
KLA-Tencor Left Cassette Nest, 5.2 0 New
KLA-Tencor 29-0259 Tropel 1X Lens
KLA-Tencor M2/M3 Servo Controller PCB
Tencor Sigmascan Profilometer Nice Condition
KLA-Tencor AIT2 CPM Power Assembly
KLA-Tencor MGF2 Analyzer Assembly
Tencor instruments 213780 PFE 4K MASK SFS7500
KLA-Tencor Comet Pneumatic Box 0
KLA-Tencor 5300 AMS Assembly 3
KLA-Tencor UV1XX0 Camera Used
KLA Tencor 200mm XY CONTROL X-Y STAGE CONTROLLER UNIT
KLA-Tencor Pac Sci Piezo Controller P-265
Tencor 80-0177 #4747
KLA-Tencor X-Scanner Assy.
Tencor instruments 4 chan PWM motor drive 113387
KLA-Tencor Spring Clamp Laser Servo Detect. 0
KLA Tencor CRS-3000 CRS3000 Confocal Review Stat. Parts
KLA-Tencor X-Scanner Assembly New
Tencor instruments I/O interface TF1B 238635
KLA Tencor Ultrapointe Laser Imaging System LIS-1010
KLA-Tencor SLX Reflected Light Assy 0
KLA-Tencor SLX Reflected Light Assy 0
Tencor instruments flat finder controller 264865
KLA-Tencor SP2 Filter Assy.
KLA-Tencor SLX Telescope Turret 1
Tencor ADC-PFE interface S76 assy 244163 rev. B
KLA-Tencor SLX Dog/Wag Assembly 1
KLA-Tencor Lower Octopole/Wein Lens
KLA-Tencor Lower Octopole/Wein Lens
KLA Tencor X/Y Interface 7 Rev B6
KLA-Tencor 3XX-Blue Cas Replacement 0
KLA-Tencor SLX Preamp Assy. 0
KLA-Tencor X Motor, Field Upgrade
KLA Tencor 7 Autofocus Board
KLA-Tencor AIT Laser Servo Detector Assy.
KLA-Tencor SLX Chirp Cell 0
KLA-Tencor Z Motion Assembly Used
KLA Tencor OmniMap Auto RS55/tc, resistivity monitor
KLA-Tencor Laser Servo Detector
KLA-Tencor 10KV Floodgun Assembly
KLA-Tencor AIT UV Laser Servo Detector New
KLA Tencor Extender Card 7
KLA-Tencor Stage CZ/FZ, SPL, FDC
KLA-Tencor F5X Disp Analyzer 0
KLA Tencor 0 Cable Assy
KLA-Tencor Ref. Light Preamp 0
KLA-Tencor 3XX-1 Image Rotator 0 New
KLA-Tencor LV Detector Assy.
KLA Tencor 7 Mechanical Drive Board
KLA-Tencor SLX Relay/M5 Assembly 1
KLA-Tencor Lower Octopole/Wein Lens
KLA-Tencor Lower Octopole/Wein Lens
KLA Tencor 7 Communication interface II
KLA-Tencor 3XX-I Refl. Light Detect.760-321399-000
KLA-Tencor CRS1010 Laser Power Board
KLA-Tencor Scintillator W/ Case
KLA Tencor Camera Timer 7
KLA-Tencor Tropel Lens Assy.
KLA-Tencor Tropel Lens Assy.
KLA-Tencor AIT UV Laser Servo Detector
KLA Tencor Illumination Control 7
KLA-Tencor CZ/FZ Stage Assembly Untested
KLA-Tencor AIT/UV Laser Servo Detector New
KLA Tencor Sensor Buffer Board 7
KLA - TENCOR - In-Line Electrical Measurement
KLA TENCOR 7700 WAFER INSPECTION SYSTEM WIS
KLA-Tencor 50 Tropel Lens
KLA Tencor Alpha Step 100
KLA-Tencor Tropel -5% Zoom Lens
KLA-Tencor Tropel NominalZoom Lens
KLA-Tencor Tropel NominalZoom Lens
KLA Tencor Cassette Controller Board 7
KLA-Tencor XP Objective Lens 0 Untested
KLA-Tencor SLX Objective Mount 0 Untested
KLA-Tencor SLX Objective Lens 0 Untested
KLA Tencor 7 Mechanical Drive Board
KLA-Tencor SLX UCO, COL Assembly 0 Used
KLA Tencor Instruments PN: 080810 PCB ASSY, SFS-4500
KLA Tencor P/N:
KLA Tencor 7 Mechanical Drive Board
Prometrix Tencor FT600 FT-600 Film Thickness Tool Parts
KLA Tencor Dual Fan Blower JDSU Laser Cooling
KLA Tencor 7 Mechanical Drive Board
KLA/Tencor/Tokyo Electron VIP Card Board TEL
KLA Tencor Shipping Energy Filter Assy AA
KLA Tencor PN: 0 Image Processor Board
COMDEL CPS SERIES RF GENERATOR KLA TENCOR POWER SUPPLY
KLA-Tencor VIP MOTOROLA VME SINGLE BOARD COMPUTER MVME
KLA Tencor ASSY, X-SCANNER
KLA Tencor 00 E84 Opto-Isolator board GOOD
KLA TENCOR DEFLECTION AMPLIFIER BOX
JDS UniphaseTA Laser, KLA-Tencor 0
KLA TENCOR CRS-1010S 200MM WAFR CONFOCAL REVIEW STATION
Tencor Alpha-Step 100 Profilometer/Surface Profiler
KLA-TENCOR IP I/O PCB INPUT /OUTPUT BOARD
KLA-Tencor Surfscan 6200 Wafer Surface Analysis System
KLA TENCOR LIS-1010 200MM WAFER LASER CONFOCAL IMAGING