DI802检测仪盘

DI802检测仪盘
高压软起动
社会发展是有阶段性的。在不同阶段，人们的生产手段、生产工具和生活用品都有很大的不同。上世纪80～90年代，的经济实力尚较薄弱，当时的小水泥和小钢铁发展很快，1000kW～4000kW电机的应用增长很快，与当时的经济基础相适应的液态起动装置出现，它经济实用，解决了电机起动中的一些问题。对当时的经济发展起到了的作用。到世纪之交时期，经济实力已有较大的发展，生产手段和生产工具亦有了较大发展，电机容量也有了很大增长，人们开始不满足液态起动装置的低性能，于是晶闸管串联式（固态）软起动装置的应用开始增加，继而又出现了开关变压器式软起动装置和磁饱和电抗器式（磁控）起动装置，变频装置用于电机软起动的情况也越来越多，当前这四种产品是大型电机起动市场的主品，液态起动装置则应用在小型（5000kW以下）电机上较多。另外，两种老式起动方法（自耦变压器和变压器-电动机组）也常常出现在20000kW以下电机的起动上。
大型电机驱动的设备一般都是企业的核心设备，直接影响企业的生产状况，因此人们应该对其起动给予特别的关注，合理的选择起动装置将给企业带来很大的经济效益。但是电机起动技术毕竟不是一个企业的核心技术，许多企业的电气工作者很少有时间来研究起动方法之间的差别，往往会造成不恰当的选择，有时甚至不得不做出第二次选择，给企业造成不应有的损失。因此，如实地说明起动方法的性能及其差别是非常重要的。为此我们在这方面做抛砖之尝试，如有不完善和不妥之处，望不吝添金加玉。
引起电网电压波动，影响同电网其它设备的运行
交流电动机在全压直接起动时，起动电流会达到额定电流的4~7倍，当电机的容量相对较大时，该起动电流会引起电网电压的急剧下降，影响同电网其它设备的正常运行。
软起动时，起动电流一般为额定电流的2~3倍，电网电压波动率一般在10%以内，对其它设备的影响非常小。
⒉对电网的影响
对电网的影响主要表现在两个方面：
①超大型电机直接起动的大电流对电网的冲击几乎类似于三相短路对电网的冲击，常常会引发功率振荡，使电网失去稳定。
②起动电流中含有大量的高次谐波，会与电网电路参数引起高频谐振，造成继电保护误动作、自动控制失灵等故障。
软起动时起动电流大幅度降低，以上影响可免除。

M9120-E 512 LPUF Matrox M9120 Plus Graphics Card 512 MB DDR2 ~ D ~
M9120-E512F Matrox M9120 Graphics Card 512 MB DDR2 ~ D ~
M9128-E1024LAF Matrox M9128 LP Graphics Card 1GB DDR2 ~ D ~
M9138-E1024LAF Matrox M9138 Graphics Card 1GB PCIe x16 Low Profile ~ D ~
M9140-E512LAF Matrox M9140 512MB GDDR2 PCI Express x16 (no cables)
M9140-E512LAF Matrox M9140 512MB GDDR2 PCI Express x16 4x DVI Workstation Video
M9140-E512LAF Matrox M9140 512MB GDDR2 PCI Express x16 4x DVI Workstation Video
M9140-E512LAF Matrox M9140 Graphics Card 512 MB DDR2 ~ D ~
M9148-E1024LAF Matrox M9148 Graphics Card 1GB PCIe x16 Low Profile ~ D ~
m9188-e2048f m9188 graphic card - 2 gb - pci express x16 (open box)
MAG-MIL/2/IG2 INTERGRAPH PCI VIDEO CARD MATROX MGA TVP3026
Magnenite in the matrox collectible piece
Martox Rainbow Runner Installation CD only For Millenium II Video Card
Martox Rainbow Runner Studio Upgrade - NEW/SEALED - For Millenium II Video Card
Marvel 2 Matrox PCB 521-0201 Rev C Circuit Board KLA-Tencor AIT I Used Working
MARVEL_2 MATROX 521-0201 MRV2/VID.
MASONEILAN DRESSER VARIPAK 1" PNEUMATIC CONTROL VALVE 316L
Matrix D2G-A2A-IF DualHead2Go Analog External Graphics eXpansion module
MATROX 703-00 REV : A PCI VGA CARD
MATROX D2G-DP-IF DualHead2Go Digital Edition
MATROX   MGI G4+MDHA16G DUALVGA AGP VIDEO CARD 906-01
MATROX  / PULSAR  586-03  REV  : B       / USED
matrox  644-03 copyright
matrox  7003-0301 REV A  video card vga  dvi 00P5758 G45FMDVP32DOE3D
Matrox  8MB G200 VIDEO CARD COMPAQ SP # 167033-001 356018002
MATROX  AGP SLOT MGI G45+MDHA32DR DUAL MONITOR VIDEO CARD
MATROX  BOARD  Y7139-0101 NEW FREE SHIP
Matrox  Breakout cable Y16171-00 25 PIN TO 12 BNC
Matrox  CronosPlus Y7141_0001 REV.A
Matrox  DSXFX 7131-02-Rev-A
Matrox  DSXI0/1500 7134-03-Rev-A
MATROX - DUAL HEAD2GO DP EDITION
Matrox  G2+ MSDA16B/20D 870-01 rev.A video card
MATROX  G4+MA16G  891-04 REV A
MATROX  GEN/X/00/8/STD Frame Graber  &  Gen Dig BRD /R / P   With cable.
Matrox  Helios XCL HEL2MSFCL Odyssey PCIx Camera Link 7108-01 A
MATROX - METEOR II - Camera Link Cable Adaptor- 7044_00
MATROX - METEOR II - Camera Link Cable Adaptor- 7044_00
MATROX  METEOR2-MC/4* Y751_0301 REV:B WORKING FREESHIP
Matrox  MGI PH-A128B 128MB DDR Graphics card, 2xDVI connection, up to 3 monitors
Matrox  Millennium G550 X1 G55-MDDE32LPDF Video Graphics Card Dual Monitor
MATROX  MOR2VDE M016960, Description as photo, sn:8475, Promotion.
MATROX  MOR2VDE P/N 63039621378 Ver.1, Video Card as photo, sn:5299.
Matrox  MORPHIS Y7142-03 REV A MOR/2VD
MATROX - P/N: 871-01 - Rev. A - AGP Video Card
Matrox  Pulsar 586-03 Board w/ Breakage
Matrox  RTX-100 Video Capture and Editing Board
MATROX  SOL2MEVCLB BOARD SOLIOS eV-CL Y7367-00 REV:B  WORKING FREE SHIP
MATROX  SOL6MCLB BOARD SOLIOS XCL-B Y7285-01 REV:A  WORKING FREE SHIP
Matrox  T2G-DP3D-IF TripleHead2Go Digital SE MultiView- DP-DVI-USB w/Cables
MATROX - TRIPLEHEAD2GO
MATROX  XLNKHD/CBL VIDEO CABLE
MATROX  XLNKHD/CBL VIDEO CABLE ((IN7S1B4)
Matrox (1024 MB) (M9148) Graphics Card
Matrox (1024 MB) (M9148) Graphics Card BNIN
Matrox (COMPAQ) G200 AGP 8mb G2+/MILA/8D/CPQ Millennium G200 Graphics Card
MATROX (DSDI/CBL) CABLE
Matrox (G55-MDDE32LPDF) Millennium G550 LP Graphics Card
matrox /  METEOR2-CL/32   USED
Matrox / Brooks BM18251 PCB MTR CONT AUTOI/OD2
matrox / CronosPlus 7141_0001 REV_A  / Frame Grabber Card / USED
matrox / CronosPlus 7141_0001 REV_A / Frame Grabber Card / USED
Matrox / Hel2Mdbcl / 63039620649 M012150 60Days Warranty
Matrox / Met2-Dig/4/L50 / 752-03 / Met2 Dig 4 L50 / 752 03
matrox / METEOR2-CL/32 USED
MATROX / METEOR2-DIG/4/L  752-0202 REV.A / Board / USED
MATROX / METEOR2-DIG/4/L 752-0202 REV.A / Board / USED
Matrox / Mrvm/Vid / Mrvm Vid
MATROX / PULSAR 586-03 REV : B / USED
matrox / SOL6MCL  SOLIOS XCL  7184-01 REV.A / Board / USED
matrox / SOL6MCL SOLIOS XCL 7184-01 REV.A / Board / USED
matrox / Y7367-00  REV.B  SOL2MEVCLB* / Board  / USED
matrox / Y7367-00 REV.B SOL2MEVCLB* / Board / USED
MATROX 010G5MDBCL ODYSSEY XCL PCI-X CAMERA LINK FRAME GRABBER CARD - 63039621387
MATROX 010G5MSFCL 63039620677 HELIOS XCL/ Odyssey xcl Y7108-01 REV.A
MATROX 010G5MSFCL 63039621347 HELIOS XCL/ Odyssey XCL Y7108-04REV.A
Matrox 0367-06-02 ASD-1280 , IM-1280/AT 384-03 , RTP-1280 0376-06-01 BOARD
MATROX 0382-0302 REV.B PC Board
Matrox 05-18347 1632SL Pcb Circuit Board
Matrox 10N7756 F7229-00 Rev A 32mb Memory Dual Display
MATROX 12P-02S, METEOR2/4 750-03 Meteor-II 750-0203 cable as photo, Type A.
MATROX 12P-02S, METEOR2/4 750-03 Meteor-II 750-0203 cable as photo, Type B.
Matrox 136-C06-3 PCB STD-2480 Board
Matrox 15124-00
MATROX 15350-00050 / 1535000050 (USED TESTED CLEANED)
MATROX 158-D06-02 UNMP
MATROX 158-D06-05A / 158D0605A (USED TESTED CLEANED)
MATROX 158-D06-05A USED BW-ALPHA CIRCUIT BOARD 158D0605A
MATROX 158-D06-05B / 158D0605B (REPAIR EVALUATION ONLY)
Matrox 158-D06-05B 158D0605B Video Monitor Board Card
MATROX 158-D06-05B UNMP
Matrox 158-D06-05B Video Monitor Board Card
MATROX 158D064 BOARD NEW
MATROX 158-D06-4 UNMP
MATROX 15912-01  VIDEO CABLE ((IN7S3B4)
MATROX 15912-01 SPLITTER LFH60 TO DUAL VGA AND VIDEO
MATROX 15912-01 VIDEO CABLE ((IN7S3B4)
MATROX 15941-00 / 1594100 (NEW NO BOX)
Matrox 15941-00 DMS-60 LFH60 to Dual VGA 15 Pin Female Splitter Cable
Matrox 15941-00 LFH-60pin to Dual VGA Female Splitter Cable
MATROX 15941-00 SPLITTER CABLE 2/PK (R1S7.3)
Matrox 15942-02 Quad DVI DMS-59 Cable 60pin 2x LFH60 4x 25pin DVI-D Dual Link
MATROX 15953-02 / 1595302 (USED TESTED CLEANED)
Matrox 15963-02 DVI-I Dual Link Cable to 2 x VGA to 2 monitors, MINT
MATROX 159-C06-06 / 159C0606 (NEW IN BOX)
MATROX 159-C06-06 / 159C0606 (REPAIR EVALUATION ONLY)
MATROX 159-C06-06 / 159C0606 (USED TESTED CLEANED)
Matrox 159-C06-06 Circuit Board
Matrox 159-C06-06 Circuit Board Rev.6 Display STD-Alpha NEW
Matrox 159-C06-06 STD-Alpha PC Circuit Board Card
Matrox 16029-01 Dual Link Cable DMS-60-auf-2 DVI-I for 2 monitors, MINT
MATROX 16029-01 LFH60 TO DUAL DVI CABLE WITH DVI TO VGA ADAPTERS
MATROX 16029-01 LFH60 TO DUAL DVI SPLITTER CABLE
Matrox 16029-02 LFH60 to Dual DVI Cable with DVI to VGA Adapter
MATROX 16029-02 LFH60 TO DUAL DVI CABLE WITH DVI TO VGA ADAPTERS
MATROX 16029-02 LFH60 TO DUAL DVI SPLITTER CABLE
Matrox 16029-02 Video Card Splitter Cable - Lot of 5
Matrox 16123-00 Dual Link Cable DMS-60-auf-2 DVI-I for 2 monitors, MINT
MATROX 1909-001 / 1909001 (USED TESTED CLEANED)
MATROX 1909-001 / 1909001 (USED)
MATROX 1980 STD-ALPHA A5 159-C06-04 CIRCUIT BOARD
MATROX 19KXR 9603 INTERFACE BRIDGE FOR VIDEO MALE TO FEMALE PC LINUX MAC VGA PCI
Matrox 1GB Epica T8 PCI Express x16 4x Mini Displayports EPI-T8ELAF
Matrox 1GB Epica T8 PCI Express x16 4x Mini Displayports EPI-T8ELAF GRA4/29
Matrox 1GB PCI-E x16 Quad Mini DisplayPort Video Graphics Card M9148-E1024LAF
Matrox 1pcs used Y7347-01 REV.B PCIE/ADP
MATROX 1X0-0247-007 / 1X00247007 (USED TESTED CL