描述
6ES5491-0LB11
發(fā)生操作過電壓常與斷路器的分、合閘速度，斷路器觸頭的滅弧性能有關(guān)。
斷路器滅弧能力不夠強，在開斷時觸頭間發(fā)生電弧重燃容易引起操作過電壓，特別是在開斷空載長線路時。
斷路器滅弧能力太強，在電流尚未過零時，強行將電弧截斷，會產(chǎn)生很高的感應(yīng)電動勢，從而形成很高的截流過電壓。在開斷變壓器、電抗器、高壓電機時可能發(fā)生強制滅?。ń亓鳎┻^電壓。
斷路器合閘速度慢，在合閘過程中，動、靜觸頭間產(chǎn)生高頻電弧放電，引起高頻振蕩過電壓波，沿著線路傳向遠(yuǎn)方擊穿變壓器，在國內(nèi)外都有文獻(xiàn)記載實例。
真空斷路器的動、靜觸頭呈平面對接，在合閘時產(chǎn)生平面接觸彈跳，引起高頻振蕩過電壓，而且由于真空斷路器滅弧性能極好，在觸頭彈跳時也可能出現(xiàn)截流過電壓。在切、合空載變壓器和切、和電容器時這類過電壓事故時有發(fā)生?？蛰d長線路在合閘時，電源電壓對線路電感、電容構(gòu)成的振蕩回路充電，有時在達(dá)到穩(wěn)態(tài)之前，要經(jīng)歷一個高頻振蕩過程，從而引起過電壓。
在中性點不接地系統(tǒng)中發(fā)生單相不穩(wěn)定電弧接地，接地點的電弧間隙性的熄滅和重燃，有可能在電網(wǎng)健全相和故障相產(chǎn)生過電壓，稱此為間隙性電弧接地過電壓，也屬于操作過電壓。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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APPLIED MATERIALS – 0200-35193 SUSC. MOR R3 ROTATION
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APPLIED MATERIALS – 0240-00636 KIT, 8300 GENERIC TOOL
APPLIED MATERIALS – 0240-00754 KIT, SHUTTLE 6″ W/DUAL P
APPLIED MATERIALS – 0240-00798 KIT, HIGH PWR AUTO RF
APPLIED MATERIALS – 0240-01693 KIT,SHLD CONS SPARE ELEC
APPLIED MATERIALS – 0240-09105 KIT, ETCH PER CHAMBER EL
APPLIED MATERIALS – 0240-12272 KIT, 200MM 8″ LOAD CUP
APPLIED MATERIALS – 0240-13406 BLADE, HYBRID 6 & 8″
APPLIED MATERIALS – 0240-15538 KIT, TOX/CORR GAS STICK
APPLIED MATERIALS – 0240-18459 KIT,ULTIMA 200MM CALIBRA
APPLIED MATERIALS – 0240-19130 KIT, CLEANCUP, REFLEXION
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APPLIED MATERIALS – 0240-25968 INTLK ROTATION RING
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ALCATEL 8220 Turbo Controller CONTROLLER
ALCATEL 8221 Turbo Controller CONTROLLER
ALCATEL 8222 Turbo Controller CONTROLLER
ALCATEL 8223 Turbo Controller CONTROLLER
AMAT AMAT-0 HEAT EXCHANGER
AMAT AMAT-1 HEAT EXCHANGER
AMAT 24V PS Assembley POWER SUPPLY
AMAT Dual Chiller/Heat Exchange
AMAT E-MAX-200MM
AMAT P5000 DC Power Supply
AMAT PHASE II HOT BOX
AMAT Wafer Handler
ANELVA M1G-820 IONIZATION GUAGE
APD CYROGENIC Tiger Compressor CRYO COMPRESSOR
ASMIL HTR – BOX HEATER BOX
BAY VOLTEX CHILLER HEAT EXCH CHILLER
CYMER EX MODULE STABILIZATION PN04-09075
EBARA CRYO COMPRESSOR
EDWARDS DP80 Dry Pump
EDWARDS DP80 PUMP/blower
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EDWARDS EH 250 BLOWER
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FTS SYSTEMS RC312ZBM1
LUXTRON OCCUFIBER MODEL 100C
APPLIED MATERIALS 0010-00019 ANALOG POWER-SPLY
APPLIED MATERIALS 0010-00298 RF MATCH
APPLIED MATERIALS 0010-09900 PEDESTAL 150MM
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EDWARDS IQDP80/QMB1200 CONTROL BOX
EDWARDS PUMP SILENCER CONT CONTROLLER
EDWARDS QDP40 DRY PUMP
EDWARDS QDP40-QMB250 PUMP PACKAGE
EDWARDS QDP80/QMB1200 CONTROL BOX
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EDWARDS 625 POWER SUPPLY POWER SUPPLY
EDWARDS A38060005 CONT CONTROLLER
EDWARDS A38128100 CONT CONTROLLER
EDWARDS A38131100 CONT CONTROLLER
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ENI OEM25 XL RF GENERATOR
FTS SYSTEMS RC100C012/ST RECIRCULATING CHILLER
FTS SYSTEMS RCD 151 CHILLER, RCD 151 PN 778-099694-001
GAST 4KCB-10-M413X COMPRESSOR
KOMATSU ELEC. SPA-1820B CHILLER
LEYBOLD 50B 50 B DRY PUMP
NESLAB HX-75 CHILLER
NESLAB HX-150 CHILLER
NESLAB CFT-25 CHILLER
NESLAB FTC-350 CHILLER
OSAKA TC 1000 POWER SUPPLY
OSAKA TC 530 POWER SUPPLY
OSAKA TC 550 POWER SUPPLY
OSAKA TD2210 TURBO CONTROLLER
OSAKA TD360 TURBO CONTROLLER
OSAKA TG 1000 TURBO PUMP
OSAKA TG 370M
OSAKA TG2203M TURBO PUMP
OSAKA TG2213M TURBO PUMP
OSAKA TG360M TURBO PUMP
SHIMADZU CORP TMP-2001-LME TURBO PUMP
SMC INR-244-602A NESLAB CHILLER
APPLIED MATERIALS – 0090-09259 ESC,195MM NOTCH SIMP
Prometrix FT 750 – File Thickness Mapping System
Fusion G03 – Ozone Asher
LAM 9600 SE – Metal Etcher
APPLIED MATERIALS – P5000 CVD Chamber
Novellus 02-270441-00 – Gas Box
LAM 9600SE – Metal Etcher
Horiba PLCA-520 Particle Counter
JEOL JWS 7700
LAM 4420 – Polysilicon Etcher
ADE – 780 MRT – Digital Measurement System
TEL Act 8 SOD Track Photolithograph
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BROOKS AUTOMATION – ROBOT
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EBARA – A30W
EDWARDS – IQDP 40 DRY PUMP
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M & W – RPC 28A-2BLP-SG-VK-?17
Kaiser Power Supply,Chassis
ADVANCED ENERGY 2194-0013-Q POWER-SPLY, DC, 10KW MASTER
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AKRION – SMS8-2ZQS – TANK, QUARTZ QDR
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APPLIED MATERIALS – 0010-00114 – BEZEL OPERATOR ASSY
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APPLIED MATERIALS – 0010-02570 – ASSEMBLY THROTTLE
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APPLIED MATERIALS -0010-04918 – ARM,PADCOND,P4
APPLIED MATERIALS -0010-05106 – P4 PAD COND BELTLESS
APPLIED MATERIALS – 0010-05289 – BRUSH MOUNT
APPLIED MATERIALS – 0010-08703 – ASSEMBLY, ROBOT BLADE
APPLIED MATERIALS – 0010-09054 – HELIUM PRESSURE CONTRO
APPLIED MATERIALS – 0010-09781 – 5000 PLATFORM TOCS
APPLIED MATERIALS – 0010-09940 – ASSY, LID, WSIX, 200M
APPLIED MATERIALS – 0010-10214 – SUSCEPTOR, ASSY 150-MM
APPLIED MATERIALS – 0010-10312 – ASSY, HTR, 8″, NHT
APPLIED MATERIALS – 0010-10419 – ASSY, TEOS AMPULE
APPLIED MATERIALS – 0010-10517 – ASSY, SUSCEPTOR, WSIX,
APPLIED MATERIALS – 0010-10892 – SUSCEPTOR, SHADOW RING
APPLIED MATERIALS – 0010-10957 – ASSY DRIVE FC WXZ
APPLIED MATERIALS – 0010-20001 – ASSY PWR SUPPLY 24V
APPLIED MATERIALS – 0010-20030 – TRANSFER ROBOT ASSY
APPLIED MATERIALS – 0010-20115 – LID ASY,SHIELD TREAT
APPLIED MATERIALS – 0010-20127 – LID ASSY, SHIELD TREAT
APPLIED MATERIALS – 0010-20127 – ASSY, HANDLER RIGHT
APPLIED MATERIALS – 0010-20127 – EQ MAGNET ASSY DURA
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PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
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