描述

1764-LRP

在6～35kV的中性點非有效接地系統(tǒng)中，由于變壓器、電壓互感器、消弧線圈等設(shè)備鐵心電感的磁路飽和作用，激發(fā)產(chǎn)生持續(xù)的較高幅值的鐵磁諧振過電壓。鐵磁諧振可以是基波諧振、高次諧波諧振、分次諧波諧振。這種諧振產(chǎn)生的過電壓的幅值雖然不高，但因過電壓頻率往往遠(yuǎn)低于額定頻率，鐵心處于高度飽和狀態(tài)，其表現(xiàn)形式可能是相對地電壓升高，勵磁電流過大，或以低頻擺動，引起絕緣閃絡(luò)、避雷器炸裂、高值零序電壓分量產(chǎn)生、虛幻接地現(xiàn)象出現(xiàn)和不正確的接地指示。嚴(yán)重時還可能誘發(fā)保護(hù)誤動作或在電壓互感器中出現(xiàn)過電流引起PT燒壞。1故障現(xiàn)象及相關(guān)數(shù)據(jù)6kV系統(tǒng)共有八段，采用的是上海華通開關(guān)廠生產(chǎn)的電氣組合柜，該廠設(shè)備自投產(chǎn)以來，主部件未發(fā)生大的缺陷，但其輔助測量PT發(fā)生了8臺次損壞，現(xiàn)象表現(xiàn)為本體炸裂、內(nèi)部絕緣物質(zhì)噴出故障，致使6kV系統(tǒng)的相關(guān)保護(hù)不能投運，部分自動功能無法實現(xiàn)。這給廠用系統(tǒng)的安全穩(wěn)定運行帶來了極大的隱患。2故障原因初探根據(jù)故障現(xiàn)象，經(jīng)過初步判斷，估計是由于下述的幾個原因所致。1)產(chǎn)品質(zhì)量不好：如果由于產(chǎn)品本身絕緣、鐵心疊片及繞制工藝不過關(guān)等，均可能致使電壓互感器發(fā)熱過量使絕緣長期處于高溫下運行，從而導(dǎo)致絕緣加速老化，出現(xiàn)擊穿。該類型的電壓互感器一次側(cè)繞組發(fā)生匝間短路，這樣電流會迅速增大，鐵磁也將迅速飽和從而導(dǎo)致諧振過電壓，使絕緣擊穿，高壓熔斷器被熔斷。2)電壓互感器二次負(fù)荷偏重，一、二次電流較大，使二次側(cè)負(fù)載電流的總和超過額定值，造成PT內(nèi)部繞組發(fā)熱增加，尤其是在電壓高于PT額定電壓(6kV)情況下，PT內(nèi)部發(fā)熱更加嚴(yán)重；再者，該系統(tǒng)屬于中性點非有效接地系統(tǒng)，故一次側(cè)電壓在運行中容易發(fā)生偏斜，當(dāng)某相出現(xiàn)高電壓時，該相PT更加容易發(fā)生熱膨脹爆裂。表1故障統(tǒng)計編號電壓互感器型號現(xiàn)象備注

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
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家

Samco DP-200D Diamond Like Carbon (DLC) PECVD & Etch

STS Multiplex ICP chamber, Plasma Source, good parts

Orion Reticle Photomask Inspection with Aludra system

Ultratech Stepper Model 2700, used for Parts or rebuilt

ADVANCED ENERGY MDX-10K and MDX-20K, lots of 16, used

2 Zygo KMS400 Inspection equipment, Objectives, stages

POWER SUPPLY RF Generators, LOT OF 9 USED

TEL ETCH RF generator rack and Turbo controller rack

ADVANCED ENERGY DC Power Supply lots of 10, used, a

Brooks 001-7600-02 VacuTran 5 VTR5 Transfer Robot Drive

Nicolet ECO-8S FTIR Spectrometer

JEOL JSM-6400 F SEM, scanning electron microscope

Varian Portatest II model 956 leak checker, Tested

Advanced Energy VHF 2060 RF GENERATOR AMAT 0920-00056

CTI IS 1000 Cryo Compressor 8135921G001 AMAT3620-00317

4 used AE Advanced Energy HFV 8000 RF Generator

2 NEW AMAT 0100-76181 WIRING DISTRIBUTION PCB CVD 5000

30 STEC MFC SEC-4400M, WF6, SiH4, SiF4, Used

NANOMETRICS NANOLINE IV line width measuring system

Semitool WST-306M Solvent Spray, 5 or 6 inch wafer,used

MECS Transfer Robot Track YC505, MECS CS7000 controller

Veeco XRF-2000AT X-Ray Measurement System

Novellus Sequel HDP Speed chamber body

APPLIED MATERIALS, AMAT 0010-21668 PVD magnet. New

YES-RCM3, Yield Engineering System

RFPP 7520581010, RFPP AE RF50S 5KW RF power products

AE APEX 1513, 1.5 K HALO A3L5L000BA140D1?11A, 0920-00067

AE 3156110-014 APEX 1513, 1.5KW A8L2A000BA140L0?11A, New

Advanced Energy PDX 5000 RF GENERATOR 3156043-207 A

AMAT 0010-37163 Throttle valve assy 2 phase chamber

AMAT 0010-37163 assy, DPS Chamber throttle valve NEW

New Applied Material 0010-37163 DPS Cham throttle valve

AMAT 0010-70264 & AMAT 0010-70149 HP Robot Driver

NEW FOCUS, AFOP MODEL GYCW-3 FIBER OPTIC Work Station

Leybold/Oerliko?n TMP 1100C turbo pump, look very clean

2 unit AE Apex 4000-27 RF Generator, 4000 W, 27.12 MHz

NEW FOCUS, AFOP MODEL GYCW-4 FIBER OPTIC Work Station

NEW AE MDX-L6 POWER SUPPLY 3152343-000B, 0190-76190-001

AE Navigator RF MATCH 3155132-002 C, AMAT 0920-00004

AE Navigator RF MATCH 3155132-001 D, AMAT 0190-15168

COMDEL CLX2500 RF GENERATOR AMAT 0190-01370W CALIBRATED

Osaka Turbo pump TS 443CW and Turbo Controller TD360

Tokyo Electron TEL Fujikin WVG Water Vapor Generator

Advanced Energy RFG 3000 3155038-000 E Power supply

Advanced Energy RFG 1250 RF Generator AE 3155027-000 S

Comdel CLF-5000 RF Generator, Novellus 27-10140-00,

TWO CTI CRYOGENICS 8107813G001, 8F cryopump, used

TECHWARE PROCESS CONTROLLER TC 3P-DX, looks very clean.

NEW Advanced Energy Navigator RF MATCH 3155132-001 D

Unit 8560 Series DeviceNet UFC-8565 O2 He Lot’s of 8

REICHERT EPISTAR MICROSCOPE 2571 Lots of 5

Trazar Corp. RF Match AMU10E-2, REV.A, P/N 27-118072-00

BOC EDWARDS QDP80 DRY VACUUM PUMP WITH AMAT CONTROLLER

STEC LSC- 8410B, Liquid Source Controller, Looks clean

KOMATSU ELECTRONICS DW621 NEW IN BOX

AE ADVANCED ENERGY PLASMA 3151802-003 AMAT 0920-00124

AMAT HEAT EXCHANGER AMAT 0 ENDURA SYSTEM P544

CTI-CRYOGENICS 8300 compressor, 8001 controller

CTI-CRYOGENICS 8300 compressor, 8004 controller

Seiko Seiki Turbo Controller unit STP-H1000C lots of 2

CTI CRYOGENICS 8033165 CRYO PUMP 8, looks very clean

18 used Tylan FC-260 MFC, H2, O2, HCl, Cl2, WF6

EDWARDS QDP80 DRY VACUUM PUMP + AMAT CONTROLLER BOX

EDWARDS QDP80 DRY VACUUM PUMP with controller box

BOC EDWARDS QDP80 DRY VACUUM PUMP 208V + CONTROLLER BOX

Lot of 10 MFC, UNIT UFC-1660, N2, He, Unit MFC

Lot of 10 MFC, UNIT UFC-1660, N2, Cl2, O2 Unit MFC

BOC Edwards Dry Vacuum Pump QDP80, and Blower, untested

ENI Genesis GW5002MA-F1H131?-A3 3000W RF Generator W/Cal

ADVANCED ENERGY MDX DC power supply, lots of 7

Applied Materials AMAT 0010-21751 Resonator, 300 mm

GALIL DMC-1580 motion controller and power supply, rack

ADVANCED ENERGY Navigator RF Bias Match 3155126-008A

alcatel pump 2033, leybold D90A, leybold D30A, Vac pump

AE Advanced Energy HFV 8000 RF Generator 3155083-109

ENI OEM-12B-07 RF Generator AMAT 0190-76048 calibrated

Thermonics T-2500 Precision Temperature Forcing System

Trazar Corp. RF Match RFDS-1, REV 3, P/N 553-07491-00

SEIKO SEIKI STP-H1301L1B Turbo cont LAM 796-360188-001

ENI MWD-25LD-02 RF MATCH

CTI Cryo pump 8, Model # 8033165, surplus item

BOC EDWARDS QDP 40 vacuum pump with Module, untested

COMDEL CLX-1250 2 MHz RF generator P/N FP1215R2

AE RF MATCH BOX NOVELLUS 19-111025-00 , used

RF SERVICES, MODEL RFS 716 P/N 233110-01A REV: A

RF SERVICES, MODEL RFS 716 P/N 233110-01 REV: A

Nova NovaScan 420 Controller new 210-48000-01

Genmark, precision automated transfer systems, 5064340

Novellus 02-103960-00 Controller Platform P166/64

COMDEL CLX-1250 RF Generator 1.75-2.15 MHz

Novellus Match 02-282128-00, used

ACL C13170 1.25kW Microwave power source

Novellus System 02-321899-00 REV.A Module controller

MKS ENI GMW-50 RF Generator, untested

Novellus 02-103970-00 ASSY,MOD CONT,P166/64 controller

BOC EDWARDS QDP 40 vacuum pump with Silencer, untested

BOC EDWARDS QDP 40 vacuum pump with Silencer, untested

BOC EDWARDS QDP 40 vacuum pump with Silencer, untested

BOC EDWARDS QDP 40 vacuum pump with Silencer, untested

ENI DPGS-10 DC Generator, AMAT 0190-36274, OEM BOX

7 STEC MFC SEC-4400M, O2, SiH4, Ar, BCl3, Cl2, used

Thermo Neslab M25 chiller, used, as is

Novellus 02-105005-00 ASSY,MC,P166,W/?8 RS232 controller

EDWARDS DP80 Dry Vacuum Pump, used, as is

ENI OEM-25A-21091-5?1 RF Generator, 2500 W, 13.56 MHz,

RFPP RF Generator ICP-20P Model# 8511139050, 2000 W

Advanced Energy PDW 600, AE 3156014 Lam # 853-15516-003

ENI OEM-12B-07 RF Generator, 1200W at 13.56 MHz

Lot of 6 MFC, UNIT UFC-1660, N2, Cl2, He Unit MFC

Lot of 6 MFC, UNIT UFC-1660, O2, Cl2, Unit MFC

ENI OEM-12B-02 RF Generator, 1250W at 13.56 MHz, used

ENI OEM-12B-02 RF Generator, 1250W at 13.56 MHz, used

ENI GHW-12Z Genesis RF Generator 1250W, AMAT 0190-09832

ROLLER BRUSH CELL HDSIOC NOVELLUS 02-336512-00 REV. 1

HDSIOC ROLLER BRUSH NOVELLUS 02-308058-00 VERSION 4.72

XCEDA FAC HDSIOC NOVELLUS 02-309772-00 VERSION 4.72

ISOC HI-LO TRANSFER NOVELLUS 02-131736-00 REV. A

PDL OXIDE HDSIOC 3 NOVELLUS 02-273741-00 VERSION 4.72

ISIOC DAMA CLEAN BB-DFE DIGITAL DYNAMICS G19-10000-00

APPLIED ENERGIES 750V 3153110-001

Pfeiffer TCP 600 Turbo pump Controller

ENI DCG-200 DC Plasma Generator, AMAT 0190-08033

AE Advanced Energy MDX-20K Master 3152223-003-Y, used

AE Advanced Energy MDX-20K Master, AE Model 3152223-003

AE Advanced Energy MDX-10K Master, AE Model 3152012-041

LAM 852-014681-583 RF Generator ENI OEM-6A-11491-52

Advanced energy 2026-000-D, ASM LDM PLASMA Generator

VARIAN Turbo-V 250 MACRO TORR turbo pump 969-9007S004

AE RFPP LF-5 RF Generator and RFPP ATL-100RA RF Match

ENI OEM-12A-21041-5??1 RF Generator, 1250W at 13.56 MHz

ENI OEM-12B-01 RF Generator, 1250W at 13.56 MHz, used

ENI OEM-12B-1 RF Generator, 1250W at 13.56 MHz, used

8 used Tylan FC-261 N2, H2, O2

ENI RF Generator OEM-12A, 1250W at 13.56 MHz

New MKS 655AD2N Pressure controller, manual MKS 600

Kinetics Thermal systems RC152ZLAM Chiller, Used

6 STEC MFC SEC-4400M, CL2, O2, SiF4, Used

6 STEC MFC SEC-4400M, NH3, CF4, CHF3, used

NEW VAT PM-5 Adaptive Pressure Cont, LAM 796-093088-004

NEW VAT PM-5 Adaptive Pressure Controller With manual

ENI OEM-6 RF Generator, ENI OEM-6AM-1B-2125?1, 750 Watt

ENI OEM-650A RF Generator, ENI OEM-6A-11491-52?, 750 W

PCB Board OPTO22 LC4 001836L 94V-0, OPTO 22 EX2 001840D

STEC MFC SEC-4400MC, N2 and O2 TOTAL of 5 units

Leybold Turbo Controller NT 340M and NT 450, lot’s of 4

Advanced Energy MDX-10K Slave, AE Model 3152012-043 X

Asyst Hine Design Process Chamber Elevator 04290-201

ENI AP-400BM1 Power Amplifer/Genera?tor AP-400

TWO Luxtron 100C M-100 Temperature Control 0190-35236

ENI OEM-6 RF Generator, OEM-6AM-1, 13.56 MHz,used

ENI LPG-6A RF Generator, Low Frequency

ALD HDSIOC 0 NOVELLUS 02-295367-00 VERSION 5.0 REV. A

MKS 649A11T11CAVR N2 10 SCCM, 10 torr, lot of 6

CYBOR PUMP CONTROL MODULE MODEL 505E, 505C2

CYBOR CONTROL MODULE 00506-05 18 VDC 10.5 AMPS

ENI RF Generator LPG-6A , Low Frequency, used, as is

Comdel CPS500AS RF Generator, AMAT 0190-13320

3 Unit 3000 Series DeviceNet UFC-3165, AMAT 3030-03330

Osaka TD2001 Turbo controller

NOVELLUS 27-156710-00 CONTROLLER I/O DUALCAP VERS. 4.8

SIOC wts-vh sioc 1 NOVELLUS 02-123968-00 REV. 2

SEREN I1600 ICP Generator

vacuum chamber Flange, Cryo Turbo, Gate valve interface

ISIOC RF HCM PVD-PVD RACK NOVELLUS 02-124572-00 REV. 1

ISIOC HCM APVD NOVELLUS 02-276954-00 REV. 1

ISIOC HI-LO TRANSFER NOVELLUS 02-131736-00 REV.A

SIOC WTS-HV SIOC 0 NOVELLUS 02-123962-00 REV. A

5 STEC MFC SEC-4400M C3F6, WF6, SiH4, used

Pfeiffer Balzers TPH 170 Turbo Pumps, PMP01210D619

MFC Mykrolis FC-2902MEP5-T, 5 SLPM, Gas N2 NEW lot of 2

MKS Foreline Heated Jacket, 2 Straight Line, 1 Elbow

Aligner up/down transmission #7458, 233435333

VME MOTOROLA 2304-900

2 NEW AMAT 0021-09552 Plunger throttle valve DPS cham

ENI OEM-650A RF Generator, ENI OEM-6A-11491-52?, 750 W

EXFO Acticure A4000, Spot curing system, see pictures

4 Unit 8560 series UFC-8561C H2 HCL, AMAT 3030-12306

2 NEW AMAT 0021-09550 chassis plate throttle 5 phase

AMAT 0190-13407 AE PDX RF Generator 500W, 325-375 KHz

HAMAMATSU UV SPOT LIGHT SOURCE L8269-01

EFOS Novacure UV light source N2000

EFOS Novacure UV light source N2001-A1

EFOS Novacure UV light source N2001-A1, 4.0 AMP, 250V

EXFO Novacure Spot curing system N2100, 4.0 AMP, 250V

BOC EDWARDS Active gauge controller, 2 APG-L-NW16, more

HP DESC BOARD 05372-60006

HAMAMATSU UV SPOT LIGHT SOURCE L5662

MKS 653B-10-250-B THROTTLE VALVE

vacuum components, parts, valves lot’s of 13

AE RFPP LF-5 500 Watts RF Generator, AE 3150012

Asyst OFH000Q Wafer Orientor

NEW NSK Precision products XY-FR-E067001 Lot’s of 6

4 STEC MFC SEC-4400M Cl2, HBr, used

MKS BARATRON 531A11TBEH3, 1.333 KPa

Unit 9000 Series UFM-9660 He 6L Lot’s of 3

TYLAN GENERAL, MDVX-100B, motor driven throttle valve

WILLIAMS advanced materials thin film products

2 NEW AMAT 0021-09549 Housing throttlevalve 5 phase DPS

UNIT MFC UFC-1100A, Ar, O2, He, Hcl, lots of 10 used

Afinity Lydall chiller FWA, 208V, 3 phase

HEWLETT PACKARD 54504A DIGITIZING OSCILLOSCOPE 400MHz

RGA AMETEK Dycore M100 P/S, M100FG equipment Monitor

STEC LF-410A-EVD, TEPO 7.0 g/min Liquid Flow Controller

Shimadzu Turbo pump Controller EI-3203MD-A1, TMP-3203

Hine Design Process Chamber Elevator P/N 94-1118

2 Applied materials 0100-00423 GPLIS seriplex I/O Dist

NEW CTI-CRYOGENICS ADSORBER COMPRESSOR 8500, 8510, 9600

STEC 0.2g/min TEPO LFC LF-310A-EVD, calibration sheet

Advanced energy 2279-002-A

MFC Brooks 5866 N2 RT series, For Novellus gas box

vacuum chamber interface Flange, look very clean

STEC Inc MFT-20

Tylan 2900 MFC FC-2900M, CF4, He, CF4, CL2, lot’s of 4

3 THORNTON DOT TWO RESISTIVITY INDICATOR CONTROLLER

AMAT 0010-75005 Centura load lock chamber

VARIAN PPM 992622, 87-195861, PCB, 40MHZ, DM992622-00

PORTER Liquid flow controller, P2000IBC010&P20?00I-C020

LUMONICS EXTENDER BOARD 6050011 REV A

Swagelok 6LVV-DPVVR4-P-C?, NEW in the box, lots of 8

STEC LF-310A, TEPO 0.25 g/min Liquid Flow Controller

STEC Liquid flow controller, LF-410A, TEOS, 4.0g/min

STEC LF-410A-EVD, TEB 2.0 g/min, TiCl4 2.0g/min , LFC

MKS Spectra vacuum controller LM59, lot’s of 3

STEC LF-410A, TEPO 4.0 g/min Liquid Flow Controller

Tylan MFC FC-280, PC-580, N2O,N2,NH3,HE lots of 4

Neslab Chiller HX-75A, LAM 778-250779-00, No Compressor

Neslab Chiller HX-75A, TU-1 pump, No Compressor

UNIT UFC-1660, N2, SF6, Ar, lots of 3 used, as is

Leybold Quadruvac Q100 mass spectrometer, with cables

MITSUBISHI PLC A1S62PN, A1SHCPU, A1SX41, A1SX81, A1SY10

MOTOROLA MVME 2304-900, 147-011 84-W8964B01G, PCB

AMAT 0226-97904 Throttle valve for Etch Chamber, New

3 SMC NP420-DN1 SERIAL INTERFACE UNIT, SMC Manifold

GE FANUC SERIES 90-30 PROGRAMMABLE CONTROLLER, GE PLC

MISSING PULSE VME ELAS 016763 FB-B94V-0 PCB

MVME 2301-900 MOTOROLA 01-W3345F, PCB

LAM ceramic ring 716-011830-006

ICS ADVENT OEMC-06-06 module controller

CTI CRYOGENICS NETWORK INTERFACE, CTI MODEL 8113020G001

3 STEC MFC SEC-4400M BCl3 100 SCCM, used

New MRC AlCu Target from Williams Advanced Materials

STEC 4400, MFC, Ar, 2 SLM, Calibration sheet.

STEC MFC SEC-4400, Ar, 1 SLM WITH CALABRATION.

專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

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

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家