1756-OW16I 1756-OW16I
1756-OW16I1756-OW16I
光纖縱聯(lián)電流差動(dòng)保護(hù):
光纖通道的大容量、較高的抗干擾能力,為縱聯(lián)電流差動(dòng)的應(yīng)用提供了可能。首先得到應(yīng)用的是模擬式的光纖縱聯(lián)電流差動(dòng),當(dāng)前已很少采用。隨著大規(guī)模集成電路的應(yīng)用,數(shù)字式電流差動(dòng)廣泛應(yīng)用開(kāi)來(lái)。目前,在華北網(wǎng)運(yùn)行的縱聯(lián)電流差動(dòng)保護(hù)有:REL-561(ABB)、LFCB-102(GEC)、MCD(三菱)、LFP-943(南瑞)、7SD511(西門(mén)子)等保護(hù)裝置。采用的通道方式有復(fù)用光纖方式和專(zhuān)用光纖方式。
因?qū)S?或復(fù)用)光纖保護(hù)主要的區(qū)別就是通道形式不一樣,但構(gòu)成縱聯(lián)的原理與常規(guī)保護(hù)沒(méi)有區(qū)別,所以,不再進(jìn)一步分析。鑒于光纖縱聯(lián)電流差動(dòng)保護(hù)原理簡(jiǎn)單,應(yīng)用前景廣泛,對(duì)通道依賴性強(qiáng),下面主要對(duì)縱聯(lián)電流差動(dòng)保護(hù)的應(yīng)用進(jìn)行分析、討論。
【公 司】: 廈門(mén)泰尼電氣有限公司
【主 營(yíng)】: AB、GE、施耐德等各類(lèi)PLC產(chǎn)品
【價(jià) 格】: 電議
【發(fā)布人】: 張亮
【電 話】: 18030028083
【所在地】: 福建 - 廈門(mén)
【座 機(jī)】: 0592-6809819
【來(lái) 源】: 供應(yīng)信息 > 電工、電氣 > PLC
【Q Q】: 2314094943
Lot 2 Coherent Cube Laser Control Box Modulation wi
Nidek / Hioki Power Supply 0-20V Single Output Adjustab
JDSU 5411-G1 Laser Diode 100mW 810nm Single Mode JD
Lot 5 Dell EMC 2-Meter HSSDC SFP Direct Connect Cable 0
Ophir Spiricon LBA-100A Laser Beam Analyzer / Damaged B
Cavro Tecan/ Kloehn Glass Syringe 0-25mL Liquid Han
Lot 9 Robbins Replacement Barrel 100uL Syringe Liquid H
Futurestar Flowmeter Pathfinder 500 CC/Min Teflon F
Pair JA Audio 6.5" In-Wall/Ceiling 2-Way Speaker 100W H
Enterasys MGBIC-Stack Gigabit GBIC Stacking Module
Genuine Xerox Printer 8R3993 Fuser Agent II /008R12990
Lot 2 Genuine Ricoh AE01-1044 / AE01-0099 Fuser Roller
EBR-500K Orange Filter Lens For MultiImage Light Ca
Coherent 201 Laser Power / Energy Meter 300nm-30um / 1W
Lot 3 Genuine Ricoh D014-2368 / D014-2352 Cleaning Blad
EUROTHERM 8533 THYRISTOR POWER CONTROLLER MOUNT/ MODULE
Harmonic NOM-3121A-42 PWRBlazer Scalable 1-GHz Optical
Lot 3 Aastra Powertouch 390 VoIP Screen-Phone IP CID Ch
Lot 2 Tri-Tronics BSDLG Visioneye Sensor Processor Opti
Advanced Pneumatic Regulator Teflon Chemical Dainip
Toyoko Kagaku RS-2000CA Optical Liquid Leak Sensor
Lot 10 HAMMOND NIBCO BRASS BALL VALVE 600 WOG 250 PSI
LOT LASER POWER SUPPLY /DRIVER/ CURRENT MONITOR CONTROL
LOT 4 GE SQUARE-D TERMINAL CORE COIL TRANSFORMER/
Yamaichi IC Test Burn-In Socket Adapter 25 Pin IC44
VWR Scientific Digital Dual Channel Thermometer with Tw
AMAT UE Precision E36W-L30 High Purity Absolute Pre
Lot 6 Applied Medical 8.5-13mm Cannula Seal Endoscope S
Vickers Instruments Microscope Transmitter Assembly Acc
AGILENT 883952-705 ZORBAX CN HPLC COLUMN 5-um 4.6x150mm
18GB Hynix 18X 1GB HYMP512R724-E3 DDR2 PC2-3200R SDRAM
Lot 2 EOS VLT100-1004 Switching Power Supply 100W 48V 2
MKS Baratron 621C Absolute Pressure Transducer Signal C