描述
對(duì)變壓器高壓側(cè)中性點(diǎn)直接接地的自耦變壓器和三繞組變壓器采用零序過(guò)電流保護(hù),取自變壓器中性點(diǎn)的零序CT安裝無(wú)方向零序保護(hù),在主變兩側(cè)分別裝上零序保護(hù),了為滿足選擇性可增設(shè)零序方向元件。方向元件用各斷路器側(cè)CT的自產(chǎn)零序電流。主變中性點(diǎn)零序電流互感器的極性接線可以將中性點(diǎn)零序電流保護(hù)指向本側(cè)母線或主變側(cè)。采用斷路器處的零序電流保護(hù),和一般高中壓側(cè)方向指向各自的母線,但當(dāng)中壓側(cè)不無(wú)源時(shí),高壓側(cè)零序方向可指向主變。指向母線保護(hù)的范圍以為斷路器電流互感器安裝處開始,需要與線路零序保護(hù)配合。指向主變變壓器,需要主變壓器另一側(cè)出線的接地保護(hù)相配合。采用主變中性點(diǎn)處地零序電流保護(hù),則保護(hù)范圍比斷路器處零序電流保護(hù)比要寬一些。小浪底目前運(yùn)行的主變中性點(diǎn)零序電流保護(hù)無(wú)方向,這樣的整定配合比較清晰方便,一是限制跳開母聯(lián)斷路器,二是限制跳開本側(cè)開關(guān)。
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主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂(lè)):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
AMAT ADAPTER,H2O INLET ASSY 215-10025-00
AMAT FILTER,DRYER,12 ORIFICE,8.0SCFM 6100-0211-000
EBARA MITSUBISHI POWER SUPPLY C-5120-057-0001 Q64P
DNS DISK,EEW CHUCK 2-F3-F8336
ESEC USA PCB,W/COMP PSD CONNECTION E2 888.0904
USHIO CONTROLLER,ROBOT&SIO 9612073
AMPRO COMPUTERS BRAIN,PCB(979&947)A60702
KLA-TENCOR PCB,I/O MECHANICAL 54-0049 36-0194
NOVELLUS MKS VALVE,THROTTLE 60-125751-00 253B-15415
FUJI AC SERVO MOTOR 0380-0126 GRA 1200 200W 94V
ASTEC POWER SUPPLY,24VDC 250W LPS355
AMAT TOP RING,SILICON,150MM 0200-00435
EURESYS GRABLINK VALUE FRAME GRABBER GP 1191 A1_0
AMAT BAFFLE PURGE QUARTZ SIMPLEX 0200-14030
SANYO DENKI BL SUPER PV SERVO DRIVE PV1A015SM91P50
AMAT ISOLATOR,CERAMIC,BLOK-CUST SPECIFIED,0200-?04118
KOMATSU ELECTRONICS CTE-52WS-A CIRCULATOR(DNS)
DNS PCB,EDGE BEAD EXPOSURE UNIT 2-VC-37635 2-VC-39829
AMAT RING,INSULATOR STEPPED PR 0200-02542
YASKAWA AC SERVO MOTOR SIGMA II 50 WATT SGMAH-A5A1F41
VARIAN ASSY,TOUCH SCREEN(979)R1437301
Enlarge
NOVELLUS CABLE,FIBER OPTIC ATM RBT 40-151998-00 BROOKS
TAMAGAWA SERVO DRIVER UF2008A-X-AXIS TA81100N2121E91?7
TAMAGAWA SERVO DRIVER UF200SA Y-AXIS TA8110N2121E918
SANYO DENKI BL SUPER P5 SERVO MOTOR P50C08075HXS21
DNS HUMIDITY SENSOR 2-39-66527 RHU-E61101328
VARIAN SHIELD,ALPS+8 0021-04644
YASKAWA SERVOPACK SGDA-01APY126 MOTOR DRIVER-NEW
EDWARDS VACUUM HEAD ASSY,QUADRANTS Y05201002-NEW
NOVELLUS DIFFUSER,BASE GAMMA 2130 15-173604-00
TEL INSULATION,SHOWER 2 MB3M10-202738-1?3
AMAT OPTION,RETICLE,?VERSAPORT ASYST 9700-6 010240-A2150
ALICAT CONTROLLER,PRESSURE SOD W/S PCD-5PSIG-D-SV-?MT
AMAT ASSY,HV ESC,DUAL ZONE,ESC,DPS 0090-00208
EATON WAFER CLAMPER BELLOWS 1910680
VARIAN SMC MEMBRANE,AIR DRYER E30000168
AMAT ASSY RH PIVOT&BEARING 300MM ROBOT WRIST 0010-17407
AMAT ASSY,LH PIVOT&BEARING 300MM RO 0010-17406
AMAT BONNET W/CAP BOLT,350MM NOR GATE VAL 3870-03609
PITTMAN SERVO MOTOR GM14902D347-R4
AMAT PCB,TEOS HEATER CONT.BD 0100-38019
VARIAN BUSHING,HOUSING ASSEMBLY BALL E11087460
GENERIC POWER PCB,GP DAC VERSION 3.0 FA9002
GSI LUMONICS PCB,IMBALLANCE INDICATOR S710205 S71-02
GSI LUMONICS APM,I/O CIO-DAS08-PGA
EBARA REGULATOR,SLURRY FLOW C-2250-019-0001 PMM20-XD48
ADVANTEST PCB,PCLD 4540410
DNS ELECTRONICS LLC PUMP,VACUUM VLT25-102219-01?10
DISCO EAUA–72360 PC,ALU UNIT 2
SCP VTEMP CONTROLLER,TEMPERATURE 00048850-00 613718
MIT LIGHTING,RED COAXIAL LED-GPOA70-228T?R
AMAT PORT,EXHAUST,PM?S,WXS 0020-42039
TEL BOARD,LOAD PORT ADD ON TOB1007 CT2980-091450-1?1
TEL INSULATOR,LOWER(G1)OUT ES3D10-101007-1?2
AMAT UHP Pressure Regulator 3800-A0200
RICHMOND POWER SUPPLY,CONTROLLER A/B AB900-1/115
AMAT FLANGE CONNECTING 0020-96176
TEL INSULATOR,LOWER(G1)IN ES3D10-101004-1?3
AMAT Half Wafe Plate ASSY 0010-C0240














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