6ES7902-2AC00-0AA0
6ES7902-2AC00-0AA0
6ES7902-2AC00-0AA0
———偏门的备品备件联系我们——————
———冷门的备品备件联系我们——————
———停产的备品备件联系我们——————
福建光沃自动化设备有限公司
联系人 ：欧工（销售经理）
手机 ：18030229053
电话 ：0592-5709825
QQ ：2479261344
邮箱 ：2479261344@qq.com
传真 ：0592-5917519
信用=财富 诚信=财富 共赢=财富
当较高频率的电流注入到变压器时，将产生趋肤效应和邻近效应，在变压器绕组中引起附加损耗，与变压器铁芯有关的铁损亦会增加。变压器将产生过热现象。
谐波电压还会使变压器激磁电流增大、效率降低，功率因数下降，当谐波电压长期存在且较为严重时，将会危及变压器绝缘层。
2、谐波对电力电容器的影响
当电容器组回路阻抗呈容性时，并联电容器对谐波电流起放大作用，特别是当系统等值感抗和电容器组回路容抗构成谐振条件，产生电流谐振时，即使较小的谐波电流也会放大若干倍，致使电容器的损耗急剧增加引起电容器过热或损坏；
另外，谐波电压值增高使电容器的损坏系数和附加损耗增加，导致容易发生故障和缩短电容器的使用寿命。
3、谐波对电力线路及用电设备的影响
当谐波电流通过架空线时，可能产生串联谐振，甚至造成危险的过电压。电力电缆在谐波电压作用下，绝缘强度降低，泄漏电流增大，使寿命缩短。
此外，谐波还会对旋转电机、继电保护和自动装置工作的可靠性、测量和计量仪器的准确性产生严重的不利影响。
NATIONAL INSTRUMENT SCXI-1102 USPP SCXI1102
National Instruments type X2 763507-03 cable NEW
NATIONAL INSTRUMENT SCXI-1326 USPP SCXI1326
NATIONAL INSTRUMENT SCXI-1300 USPP SCXI1300
NATIONAL INSTRUMENT FP-TB-01 USPP FPTB01
National instruments PCI-6071E 1.25 MS/s, 12-Bit Tested
NEW NATIONAL INSTRUMENTS PXI-6533 DAQ CARD 2 Mhz 32HS
NATIONAL INSTRUMENT SCXI-1162 USPP SCXI1162
NATIONAL INSTRUMENT SCXI-1163 USPP SCXI1163
NATIONAL INSTRUMENT SCXI-1001 USPP SCXI1001
NATIONAL INSTRUMENT SCXI-1100 NSPP SCXI1100
National Instruments NI-488.2 for Windows Software CD
NATIONAL INSTRUMENT SCXI-1303 USPP SCXI1303
NATIONAL INSTRUMENT 185183G-01 CARD *NEW*
National Instruments NI-488.2M for Win 32 Manual
NATIONAL INSTRUMENT SCXI-1302 USPP SCXI1302
National Instruments NI-488.2 Users Manual for DOS
National Instruments NI-488.2 Users Manual for Windows
National instruments PCI-6036E 200 kS/s, 16-Bit Tested
National Instruments SH48-48-A Shielded Cable 183229-01
NATIONAL INSTRUMENTS AT-GPIB/TNT PLUG N PLAY 183663C-01
National Instruments NI PCMCIA GPIB Card&2M Cable, Test
National Instruments AT-GPIB 488.2 ISA Card 181060-01
National Instruments 179056-01 Rev G GPIB MODULE
National Instruments PCI-6534 PCI Parallel Digital I/O
National Instruments NI SCB-68 IO Connector Block
Uzbek national musical instrument Qashgari RUBOB Guitar
National Instruments CB-68LPR
NATIONAL INSTRUMENTS NI PCI-GPIB IEEE 488.2 183617G-01
3 BNC to 68 Pin for NI National Instruments 'E' Series
NATIONAL INSTRUMENTS P/N 778926-01 IEEE 1394 BOARD
National Instruments GPIB-SCSI-A IEEE-488 SCSI
NATIONAL INSTRUMENT AT-MIO-16E-2 USPP ATMIO16E2
TEKTRONIX iVIEW CABLES NATIONAL INSTRUMENTS GPIB-USB #2
National Instruments MKI-2/M2 777164-02 Cable; 2 Meter
National Instruments MXI Type M1 Bus Cable 180758-02
National Instruments AT-GPIB/TNT 181830E-01
NATIONAL INSTRUMENTS MICRO GPIB CABLE
NATIONAL INSTRUMENTS NI AT-GPIB 181830E-01
National Instruments PCI1200 multifunctional DAQ board
National Instruments NI DAQ PCI-MIO-16XE-50 Free Ship
National instruments PCI-1200 Legacy DAQ Board for PCI
NATIONAL INSTRUMENTS PCMCIA GPIB CARD & 2M CABLE
National Instruments PCI-7314 Stepper Controller 4-Axis
National Instruments AMUX-64T Analog Multiplexer
Learning With Labview 8 by Inc National Instruments,...
National Instruments GPIB-PC IEEE-488
National Instruments AT-GPIB/TNT Plug & Play IEEE Card
Serial Port w/ 68 PinCon PCI-232/8 National Instruments
National Instruments 182419C-02 SH6868 Cable 2 m
National Instruments NI PCIe-GPIB IEEE 488.2
NI National Instruments PCI-GPIB IEEE 488.2 183617J-01
NATIONAL INSTRUMENTS BUS EXPANDER / ISOLATOR GPIB-120A
National Instruments PCI-IMAQ-1408 Frame Grabber Card
NATIONAL INSTRUMENTS NI PCI-DIO-96 Digital DAQ Board
LOT NATIONAL INSTRUMENTS 4-AXIS MOTION CONTROL MODULES
NATIONAL INSTRUMENTS 4-AXIS STEPPER CONTROLLER / CABLES
NATIONAL INSTRUMENTS * TBX-1329 * TERMINAL BLOCK
for National Instruments 68 Pin M w/ 3 BNC Cables +Conn
NATIONAL INSTRUMENTS NI PMC-GPIB PMC GPIB IEEE 488.2
NATIONAL INSTRUMENT VXI-MXI-2 USPP VXIMXI2
Misc DAQ 68 Pin Stuff for NI National Instruments NEW
NATIONAL INSTRUMENTS AT-GPIB/TNT ASSY181830E ,IEEE488.2
National Instruments NB-M10-16 I/O Board
NI NATIONAL INSTRUMENTS BNC-2090 DATA CONTROLLER PLC
National Instruments PCI-6031E high speed DAQ card
National Instruments AT- GPIB/ TNT Card
National Instruments VXI-1500 Mainframe Used
National Instruments 182419C-02 w/ Lead Free PCB
National Instruments 182419B-02 w/ Lead Free PCB
National Instruments NI PXI-7350 Motion Controller
MODCOMP IEEE488 National Instruments NI GPIB-1014 VME
NATIONAL INSTRUMENTS MODEL# GPIB-SCSI-A SWITCH BOX!
National Instruments AMUX-64T Analog Multiplexer
NATIONAL INSTRUMENTS NI AT-MIO-64E-3 Multifunction DAQ
National Instruments NI PXI-8176 Embedded Controller
NATIONAL INSTRUMENTS 179056-01 NATIONAL INSTRUM. GPIB M
NATIONAL INSTRUMENTS NI PCI-GPIB IEEE 488.2 183617F-01
NATIONAL INSTRUMENTS nuDRIVE-4SX-411 MOTOR DRIVE 4-AXIS
National Instrument Model Fus10 Piston
NATIONAL INSTRUMENTS VXI-MXI-2 VXIBUS C-SIZE MODULE.
National Instruments Extender Card VXI-MXI-2
National Instruments 777421L-04 Software for WIN NT/98
National Instruments X13 Micro-DB to GPIB 2M 6Ft Cable
DB25 Fem Mini Screw Terminal for NATIONAL INSTRUMENTS
NATIONAL INSTRUMENTS nuDRIVE DRIVER 4-AXIS MOTOR DRIVE
NATIONAL INSTRUMENTS GPIB-120A BUS EXPANDER/ISOLAT?OR
National Instruments NB-DIO-24 Digital I/O 180525-01
NATIONAL INSTRUMENTS PCI STEP X-Y-Z STEPPER CONTROLLER
National Instruments GPIB-PCII/IIA IEEE 488 Interface
National Instruments 777601-01 Vertical PWB Mounting
National Instruments 320094-01 Digital I/O for the Maci
Bloodletting Instruments in the National Museum of Hist
National Instruments NI PXI-6508 Digital I/O Module
National Instruments VXI-MXI-2 Module Users Manual
NATIONAL INSTRUMENTS nuDRIVE MOTION CONTROLLER / CABLES
National Instruments NI PXI-2590 Card TESTED
NATIONAL INSTRUMENTS PCI-1200 Card NI
National Instruments NB-AO-6 Digital-to-Anal?og Converte
NATIONAL INSTRUMENTS AT-GPIB/TNT PLUG N PLAY IEEE488.2
New Instruments of Environmental Governance?: National
Grand Eagle - Great books, Great prices, Great service.
763061-03 National Instruments GPIB Cable **NEW**
National Instruments PCI-6503 185183A-01 *NEW*
763061-005 National Instruments GPIB Cable **NEW**
National instruments FP-AI-110 & FP-TB-1
National Instruments 777779-01 Vertical PWB Mounting
LabVIEW 8 Student Edition by n National Instruments Inc
NATIONAL INSTRUMENTS NI-VXI DOS UTILITIES REFERENCE
NATIONAL INSTRUMENTS NI X2 2-METERS HPIB GPIB Cable
National Instruments PCI-GPIB IEEE 488.2 Card +Cable
National Instruments VXI-1500 Mainframe Used
NEW NATIONAL INSTRUMENTS CB-37FH 37-PIN 778673-01 NI
NATIONAL INSTRUMENTS NI-VXI SOFTWARE REFERENCE MANUAL C
National Instruments NI PXI-6711 Card TESTED
LEARNING LABVIEW 8-NATIONAL INSTRUMENTS-ROB?ERT H.BISHOP
National Instruments 178009-01
NATIONAL INSTRUMENTS NI-VXI TEXT UTILI REFERENCE MANUAL
LOT 5 NATIONAL INSTRUMENTS SCB-100 CB-50LP PXI BLOCKERS
NATIONAL INSTRUMENTS NI PCI-DIO-96 Board 182920D-01
National Instruments NI-VXI Programmer Reference Manual
National Instruments PCIE-8361 for Remote Interface
NATIONAL INSTRUMENTS NI-VXI SOFTWARE REFERENCE MANUAL
NATIONAL INSTRUMENTS NI X2 2.1-METERS HPIB GPIB Cable
National Instruments: 763061-02X2 GPIB Cable NEW
NI National Instruments DIO Card ISA PC-DIO-96/PnP
NATIONAL INSTRUMENTS NI PCI-8335 MXI-3 PXI INTERFACE
National instruments PCI-6527 interface card 185681C-01
NATIONAL INSTRUMENTS NI PCI Serial RS-232-485 2 port
NATIONAL INSTRUMENTS NI-VXI REFERENCE MANUAL FOR BASIC
NATIONAL INSTRUMENTS NI X2 4.1-METERS HPIB GPIB Cable
NATIONAL INSTRUMENTS AT-DIO-32F USER MANUAL
National Instruments MXI2/2 8-meter cable 182802A-008
Surveying instruments (National Council of Teachers of
NI, NATIONAL INSTRUMENTS AT ISA GPIB TNT LOT OF 4
National Instruments 5938 185185A-01 PCI Card
Q-Bus National Instruments 179056-01 GPIB Module Qbus
National Instruments MXI2/2 1-meter cable 182802A-001
NATIONAL INSTRUMENTS NI PC-DIO-24/PNP ISA 183873B-01
NI National Instruments PC-DIO-96/PnP ISA 183549D-02
History & Artistry National Resonator Instruments Book
National Instruments NI PCI RS-232 2Ch
National Instruments RS-232/485 PCI 4-port 185729D-01
National Instruments PCI-6503 NI DAQ 185183C-01Card
763061-01 National Instruments GPIB Cable **NEW**
NATIONAL INSTRUMENTS AT-GPIB-TNT NATIONAL INST. INTERFA
National Instruments PCI-232/485, 2CH
National Instruments LabVIEW User Manual for Windows
National Instruments NI PCMCIA GPIB Card
National Instruments 182845-01 S8 Serial Cable
NATIONAL INSTRUMENTS AT-MIO-64E-3 DAQ CARD WARRANTY!!!
National Instruments SB-MXI SBUS Interface 181155A-50
NATIONAL INSTRUMENTS VXI-AT200 NI-VXI GETTING STARTED
National Instruments NB-MIO-16X Nubus Digital I/O Board
LOT 2 NATIONAL INSTRUMENTS NULOGIC MOTION CONTROLLER NI
National Instruments 5938 185183B-01 PCI Card 50-Pin
National Instruments NI PCI RS-232 2Ch
National Instruments NI PCI RS-232 2Ch
National Resonator Instruments The History Of Book NEW!
National Instruments 180524-10 CABLE ASSY 50P, FLAT, NB
National Instruments 185652A-01 PCI Card
NATIONAL INSTRUMENTS DAQ 6601-6602 USER GUIDE
NATIONAL INSTRUMENTS NI 185205A-01 CABLE PSH32-4DB9
National Instruments NB-TIO-10 Nubus Card 181380-01
2 NATIONAL INSTRUMENTS FP-1001 RS-485 NETWORK INTERFACE
