DE69026186D1 - Verfahren zur Feststellung von Teilentladungen in der Isolation eines elektrischen Starkstromkabels - Google Patents

Verfahren zur Feststellung von Teilentladungen in der Isolation eines elektrischen Starkstromkabels

Info

Publication number
DE69026186D1
DE69026186D1 DE69026186T DE69026186T DE69026186D1 DE 69026186 D1 DE69026186 D1 DE 69026186D1 DE 69026186 T DE69026186 T DE 69026186T DE 69026186 T DE69026186 T DE 69026186T DE 69026186 D1 DE69026186 D1 DE 69026186D1
Authority
DE
Germany
Prior art keywords
insulation
electrical power
power cable
partial discharges
determining partial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69026186T
Other languages
English (en)
Other versions
DE69026186T2 (de
Inventor
Takeshi Endoh
Tomoaki Imai
Mikio Hagiya
Chuki Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1277928A external-priority patent/JPH068845B2/ja
Priority claimed from JP1309743A external-priority patent/JPH068846B2/ja
Priority claimed from JP30974489A external-priority patent/JPH068847B2/ja
Priority claimed from JP1314006A external-priority patent/JPH0833429B2/ja
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Application granted granted Critical
Publication of DE69026186D1 publication Critical patent/DE69026186D1/de
Publication of DE69026186T2 publication Critical patent/DE69026186T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58Testing of lines, cables or conductors
DE69026186T 1989-10-25 1990-01-31 Verfahren zur Feststellung von Teilentladungen in der Isolation eines elektrischen Starkstromkabels Expired - Fee Related DE69026186T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1277928A JPH068845B2 (ja) 1989-10-25 1989-10-25 部分放電測定方法
JP1309743A JPH068846B2 (ja) 1989-11-29 1989-11-29 部分放電測定方法
JP30974489A JPH068847B2 (ja) 1989-11-29 1989-11-29 ワイヤシールドケーブルの部分放電測定方法
JP1314006A JPH0833429B2 (ja) 1989-12-02 1989-12-02 長尺電力ケーブル線路の部分放電位置標定方法

Publications (2)

Publication Number Publication Date
DE69026186D1 true DE69026186D1 (de) 1996-05-02
DE69026186T2 DE69026186T2 (de) 1996-08-08

Family

ID=27479148

Family Applications (5)

Application Number Title Priority Date Filing Date
DE69033263T Expired - Fee Related DE69033263T2 (de) 1989-10-25 1990-01-31 Verfahren zum Vergleich von Frequenzspektren
DE69033279T Expired - Fee Related DE69033279T2 (de) 1989-10-25 1990-01-31 Verfahren zur Messung von Teilentladungen in einem Draht mit einer Detektionselektrode
DE69026186T Expired - Fee Related DE69026186T2 (de) 1989-10-25 1990-01-31 Verfahren zur Feststellung von Teilentladungen in der Isolation eines elektrischen Starkstromkabels
DE69032763T Expired - Fee Related DE69032763T2 (de) 1989-10-25 1990-01-31 Nutzung eines Magnetkerns für das Messen von Teilentladungen
DE69032808T Expired - Fee Related DE69032808T2 (de) 1989-10-25 1990-01-31 Verfahren zum Lokalisieren von Fehlern in elektrischen Leistungskabeln

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DE69033263T Expired - Fee Related DE69033263T2 (de) 1989-10-25 1990-01-31 Verfahren zum Vergleich von Frequenzspektren
DE69033279T Expired - Fee Related DE69033279T2 (de) 1989-10-25 1990-01-31 Verfahren zur Messung von Teilentladungen in einem Draht mit einer Detektionselektrode

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69032763T Expired - Fee Related DE69032763T2 (de) 1989-10-25 1990-01-31 Nutzung eines Magnetkerns für das Messen von Teilentladungen
DE69032808T Expired - Fee Related DE69032808T2 (de) 1989-10-25 1990-01-31 Verfahren zum Lokalisieren von Fehlern in elektrischen Leistungskabeln

Country Status (5)

Country Link
US (2) US5323117A (de)
EP (7) EP1310803A3 (de)
CA (1) CA2008898C (de)
DE (5) DE69033263T2 (de)
NO (2) NO302494B1 (de)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO302494B1 (no) * 1989-10-25 1998-03-09 Hitachi Cable Fremgangsmåte for deteksjon av en partiell utladning i en isolasjon av en elektrisk kraftkabel
NL9201944A (nl) * 1992-11-05 1994-06-01 Kema Nv Werkwijze voor het meten van partiële ontladingen in kabels.
JP2952737B2 (ja) * 1993-03-24 1999-09-27 日新電機株式会社 電力機器の部分放電検出装置
US5574378A (en) * 1994-12-15 1996-11-12 Square D Company Insulation monitoring system for insulated high voltage apparatus
EP0740159A1 (de) * 1995-04-21 1996-10-30 N.V. Kema Messanordnung für Teilentladungen
US5652521A (en) * 1995-12-19 1997-07-29 Square D Company Insulation monitoring system for insulated high voltage apparatus
US6313640B1 (en) * 1998-02-03 2001-11-06 Abb Power T & D Company, Inc. System and method for diagnosing and measuring partial discharge
DE19832387A1 (de) * 1998-07-18 2000-01-20 Asea Brown Boveri Verfahren zum Feststellen von Einbau- und/oder Kalibrierungsfehlern einer Mehrzahl von Signalauskopplungseinheiten eines oder mehrerer Teilentladungsmeßsysteme
AU1254400A (en) * 1998-11-23 2000-06-13 Harry E. Orton Method for diagnosing insulation degradation in underground cable
GB9900820D0 (en) * 1999-01-14 1999-03-03 Bicc Plc Testing cables and their joints
US6172862B1 (en) 1999-06-11 2001-01-09 Anthony J. Jonnatti Partial discharge relay and monitoring device
US6265880B1 (en) * 1999-06-15 2001-07-24 The United States Of America As Represented By The Secretary Of The Air Force Apparatus and method for detecting conduit chafing
JP2001194410A (ja) * 1999-07-21 2001-07-19 Sumitomo Electric Ind Ltd 直埋電力ケーブルの部分放電測定方法
GB0001923D0 (en) * 2000-01-27 2000-03-22 Bicc Gen Uk Cables Ltd Partial discharge detection test link,partial discharge detection system and methods for detecting partial discharge on a power cable
US6882158B2 (en) * 2001-01-24 2005-04-19 General Dynamics Ots (Aerospace) Inc. Series arc fault diagnostic for aircraft wiring
US6930610B2 (en) * 2002-05-03 2005-08-16 General Electric Company Monitoring system and method for wiring systems
DE10246557A1 (de) * 2002-10-05 2004-04-15 Alstom Verbindungsmuffe für eine Sammelschienenkupplung in einer gasisolierten Schaltanlage
AU2003267842A1 (en) * 2002-10-10 2004-05-04 Hanyang Hak Won Co., Ltd. Hybrid type sensor for detecting high frequency partial discharge
GB2422967B (en) * 2003-10-22 2007-06-06 Fujikura Ltd Insulation degradation diagnostic device
TWI280383B (en) * 2004-06-29 2007-05-01 Japan Ae Power Systems Corp Partial discharge detecting sensor, and detecting device, and gas insulated electric apparatus provided with a partial discharge detecting sensor
US7532012B2 (en) * 2006-07-07 2009-05-12 Ambient Corporation Detection and monitoring of partial discharge of a power line
US7579843B2 (en) * 2006-10-13 2009-08-25 General Electric Company Methods and apparatus for analyzing partial discharge in electrical machinery
EP2107384A1 (de) * 2008-03-31 2009-10-07 ABB Research Ltd. Bestimmung der degradierten Isolierfähigkeit und induktives Betriebselement
JP4949314B2 (ja) * 2008-04-18 2012-06-06 株式会社ジェイ・パワーシステムズ 部分放電測定方法
US8098072B2 (en) * 2008-09-24 2012-01-17 Siemens Energy, Inc. Partial discharge coupler for application on high voltage generator bus works
JP5238596B2 (ja) * 2009-04-27 2013-07-17 株式会社日本自動車部品総合研究所 回転電機の放電量測定装置および放電量測定方法
DE102009043339B4 (de) 2009-05-26 2013-06-13 Nkt Cables Gmbh Prüfverfahren und Anordnung zur Messung von Teilentladungen an einem Einleiterseekabelspleiß
IT1394479B1 (it) * 2009-05-29 2012-07-05 Techimp Technologies S A Ora Techimp Technologies S R L Strumento e procedimento di rilevazione di scariche elettriche parziali in un apparato elettrico.
JP5433392B2 (ja) * 2009-12-16 2014-03-05 日立オートモティブシステムズ株式会社 電動車両用回転電機、駆動制御装置および絶縁診断方法
EP2360486B1 (de) * 2010-02-24 2018-09-05 Omicron electronics GmbH Verfahren zur Kalibrierung einer Teilentladungsmesseinrichtung
IT1398250B1 (it) * 2010-03-10 2013-02-22 Techimp Technologies S A Ora Techimp Technologies S R L Strumento e procedimento per rilevare scariche elettriche parziali
EP2395364A1 (de) * 2010-06-14 2011-12-14 Alstom Technology Ltd Verfahren zur Detektion der in einem elektrischen System erzeugten Teilentladung und elektrisches System mit einer Vorrichtung zur Detektion der darin erzeugten Teilentladungen
WO2012003426A2 (en) * 2010-07-02 2012-01-05 Reynolds Brett S Apparatus for calibrated non-invasive measurement of electrical current
NL2005431C2 (en) * 2010-10-01 2012-04-03 Locamation B V Method and system for on-line measurement in power cables.
CA2815403C (en) * 2010-11-04 2016-06-21 Alstom Technology Ltd Partial discharge sensor for a high voltage insulation monitoring device
EP2887074B1 (de) * 2013-12-18 2020-11-25 3M Innovative Properties Company Spannungssensor
US10398465B2 (en) * 2014-04-29 2019-09-03 Misonix Incorporated Ultrasonic surgical instrument assembly, related accessory, and associated surgical method
FR3021410B1 (fr) * 2014-05-20 2016-05-13 Nexans Appareillage sec a haute tension equipe d’un dispositif de controle en continu
GB2531325A (en) * 2014-10-16 2016-04-20 Repl Internat Ltd Medium-Voltage cable joint
CN104483546B (zh) * 2014-12-09 2017-02-22 南京国睿安泰信科技股份有限公司 一种fpga数字逻辑信号的频谱分析方法
US11177055B2 (en) 2017-03-06 2021-11-16 Savannah River Nuclear Solutions, Llc Leading/lagging cable referencing platform for monitoring the health of underground cable networks
RU2639578C1 (ru) * 2017-04-20 2017-12-21 Илья Николаевич Джус Способ измерения частичных разрядов
RU2651641C1 (ru) * 2017-04-27 2018-04-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" Способ оценки качества кабеля
DE102017116613B3 (de) * 2017-07-24 2018-08-09 Maschinenfabrik Reinhausen Gmbh Verfahren und Prüfvorrichtung zur Messung von Teilentladungsimpulsen eines geschirmten Kabels
US11670930B2 (en) * 2018-09-10 2023-06-06 3M Innovative Properties Company Support structure for cable and cable accessory condition monitoring devices
WO2020055667A2 (en) 2018-09-10 2020-03-19 3M Innovative Properties Company Electrical power cable monitoring device including partial discharge sensor
WO2020055666A1 (en) 2018-09-10 2020-03-19 3M Innovative Properties Company Electrical power cable monitoring device using low side electrode and earth ground separation
CN109752634B (zh) * 2019-03-01 2024-02-27 浙江新图维电子科技有限公司 一种电缆接头谐振式互感局放检测装置及检测方法
CN113311291A (zh) * 2021-05-28 2021-08-27 国网江苏省电力有限公司无锡供电分公司 大段长高压电缆的局部放电检测灵敏度测试装置及方法
CN113884819A (zh) * 2021-11-01 2022-01-04 西南交通大学 一种牵引供电系统电缆接头故障定位系统及方法
CN114002553A (zh) * 2021-11-01 2022-02-01 西南交通大学 一种牵引供电27.5kV电缆接头故障识别方法
CN114114123A (zh) * 2021-11-29 2022-03-01 广东电网有限责任公司广州供电局 局部放电检测传感器的校验装置及方法

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832042A (en) * 1954-04-30 1958-04-22 Northern Electric Co Fault locating apparatus
US2792568A (en) * 1955-03-04 1957-05-14 Specialties Dev Corp Network for detecting the failure of the insulation of electrically conductive cables
US3252085A (en) * 1963-09-12 1966-05-17 Western Electric Co Method of locating coaxial cable arcing faults utilizing a magnetic blowout principle
US3346808A (en) * 1963-09-25 1967-10-10 Gen Cable Corp Apparatus including capacitance means for measuring ionization in high voltage cables under conditions of heavy external interference
US3370227A (en) * 1966-09-20 1968-02-20 Gen Cable Corp Apparatus to measure continuously corona inception and extinction voltages in movinginsulated cable cores
US3430137A (en) * 1967-07-10 1969-02-25 Gen Cable Corp Method and apparatus for automatic measurements of corona inception and extinction voltages
JPS4970183A (de) * 1972-11-10 1974-07-06
US4064454A (en) * 1973-02-14 1977-12-20 Matsushita Electric Industrial Co., Ltd. Corona discharge detecting device
US4001674A (en) * 1975-07-29 1977-01-04 General Electric Company Method of testing the voltage withstand ability of a high voltage d-c cable at a voltage higher than its normal operating voltage while carrying current
DE2605418C2 (de) * 1976-02-12 1982-05-19 Schaltbau Gesellschaft mbH, 8000 München Anordnung zur Prüfung der elektrischen Festigkeit von isolierten elektrischen Leitern
US4134061A (en) * 1977-02-02 1979-01-09 Gudgel Howard S Pipe current detector with plural magnetic flux detectors
GB2037060B (en) * 1978-10-02 1982-10-27 Texas Instruments Inc Electric power cables
JPS56157873A (en) * 1980-05-09 1981-12-05 Hitachi Ltd Partial discharge monitor device for dry type transformer
JPS57189074A (en) * 1981-05-18 1982-11-20 Showa Electric Wire & Cable Co Ltd Corona measuring method for power cable
DE3148735A1 (de) * 1981-12-09 1986-10-09 Fried. Krupp Gmbh, 4300 Essen Verfahren und vorrichtung zur frequenzanalyse
JPS58106473A (ja) * 1981-12-19 1983-06-24 Sumitomo Electric Ind Ltd ケ−ブルの銅テ−プ断線発見方法
US4446420A (en) * 1982-01-28 1984-05-01 Hydro Quebec Method and device for detecting and locating fault and/or partial discharges in a gas-insulated electrical equipment
JPS5991376A (ja) * 1982-11-16 1984-05-26 Kansai Electric Power Co Inc:The 電力ケ−ブルの絶縁劣化診断方法
DE3347275A1 (de) * 1983-12-28 1985-07-11 Messwandler-Bau Gmbh, 8600 Bamberg Messverfahren zur feststellung von teilentladungen und vorrichtung zur durchfuehrung dieses verfahrens
DE3569988D1 (en) * 1984-09-28 1989-06-08 Fuji Electric Co Ltd Partial discharge measuring device
GB8425761D0 (en) * 1984-10-11 1984-11-14 Raychem Sa Nv Remote measurement of conditions
JPS61108976A (ja) * 1984-11-01 1986-05-27 Mitsubishi Electric Corp ガス絶縁母線の故障位置検出装置
JPS6211177A (ja) * 1985-07-09 1987-01-20 Hitachi Cable Ltd ケ−ブルの部分放電測定方法
DE3610170A1 (de) * 1986-03-26 1987-10-01 Bosch Gmbh Robert Verfahren zum eichen einer messschaltung
DE3764009D1 (de) * 1986-04-14 1990-09-06 Siemens Ag Verfahren und vorrichtungen zur erkennung und lokalisierung von schaeden in elektrischen anlagen.
US4789829A (en) * 1986-07-18 1988-12-06 Science Application International Corporation Method and apparatus for determining RE gasket shielding effectiveness
FI863487A (fi) * 1986-08-27 1988-02-28 Matti Viikari Pao elektromagnetisk induktion baserande foerfarande och anordning foer kontroll av skicktet av elektrisk isolering hos ledningar i ett ledande medium.
US4929903A (en) * 1987-08-07 1990-05-29 Mitsui Petrochemical Industries, Ltd. Method of and apparatus for assessing insulation conditions
JP2831355B2 (ja) * 1988-02-29 1998-12-02 三井化学株式会社 絶縁状態の検知方法
JP2869067B2 (ja) * 1988-02-26 1999-03-10 三井化学株式会社 絶縁状態の検知装置
DE3802841A1 (de) * 1988-02-01 1989-08-03 Standard Elektrik Lorenz Ag Verfahren zur charakterisierung optischer eigenschaften von halbleiter-lasern und vorrichtung zur durchfuehrung des verfahrens
US4887041A (en) * 1988-02-17 1989-12-12 University Of Connecticut Method and instrumentation for the detection, location and characterization of partial discharges and faults in electric power cables
US4876721A (en) * 1988-03-03 1989-10-24 Martin Marietta Energy Systems, Inc. Method and device for identifying different species of honeybees
US4853616A (en) * 1988-07-21 1989-08-01 Atlantic Richfield Company Detection of water saturation in insulation at cased road crossings
US4935176A (en) * 1988-12-09 1990-06-19 Southwire Company Method of and apparatus for detecting defects in an electrical conductor
US4967158A (en) * 1989-03-31 1990-10-30 Hydro-Quebec Portable detector device for detecting partial electrical discharge in live voltage distribution cables and/or equipment
NO302494B1 (no) * 1989-10-25 1998-03-09 Hitachi Cable Fremgangsmåte for deteksjon av en partiell utladning i en isolasjon av en elektrisk kraftkabel

Also Published As

Publication number Publication date
EP0424598A3 (en) 1992-06-24
EP0424598B1 (de) 1996-03-27
NO309881B1 (no) 2001-04-09
US5469067A (en) 1995-11-21
EP0424598A2 (de) 1991-05-02
DE69026186T2 (de) 1996-08-08
NO900431D0 (no) 1990-01-30
EP0806676B1 (de) 1999-09-01
CA2008898C (en) 1998-11-24
DE69033279D1 (de) 1999-10-07
DE69033263T2 (de) 1999-12-09
DE69033279T2 (de) 1999-12-30
EP1310803A2 (de) 2003-05-14
DE69032763T2 (de) 1999-04-01
DE69033263D1 (de) 1999-09-30
EP0806677A1 (de) 1997-11-12
NO900431L (no) 1991-04-26
US5323117A (en) 1994-06-21
NO974684L (no) 1991-04-26
DE69032808T2 (de) 1999-04-22
CA2008898A1 (en) 1991-04-25
NO974684D0 (no) 1997-10-10
EP0629866A1 (de) 1994-12-21
NO302494B1 (no) 1998-03-09
EP0636890B1 (de) 1999-08-25
EP0628829A1 (de) 1994-12-14
EP1310803A3 (de) 2003-10-22
EP0806676A1 (de) 1997-11-12
EP0628829B1 (de) 1998-11-11
EP0636890A1 (de) 1995-02-01
DE69032808D1 (de) 1999-01-14
EP0629866B1 (de) 1998-12-02
DE69032763D1 (de) 1998-12-17

Similar Documents

Publication Publication Date Title
DE69026186T2 (de) Verfahren zur Feststellung von Teilentladungen in der Isolation eines elektrischen Starkstromkabels
DE69428326D1 (de) Gerät zur Prüfung der elektrischen Bauteile eines Wechselrichters
DE3874402D1 (de) Verfahren zum erneuern des skala-faktors einer elektrischen wechselstrommessanordnung durch faraday-effekt.
DE68927314T2 (de) Verfahren zur Herstellung eines elektrischen Verbindungsgehäuses
DE68923732T2 (de) Verfahren zur Herstellung einer elektrischen Vorrichtung.
DE3685814T2 (de) Zusammenbau eines elektrischen verbinders und verfahren zur ausfuehrung desselben.
DE69405679T2 (de) Vorrichtung zur Sicherstellung der Kontinuität der elektrischen Abschirmung von Kabeln
DE69604476T2 (de) Verfahren zur Leistungsversorgung einer elektrischen Schaltung
DE69024728T3 (de) Verfahren zur Herstellung einer Elektrode zur elektrischen Kontaktierung eines Oxyd-Supraleiters
DE69304173T2 (de) Vorrichtung zum Verhindern des Schwindens der Isolation für kunststoffisolierte Energiekabel
ATA177786A (de) Verfahren zur ermittlung des abbrandes der kontaktstücke eines in einer gekapselten schaltanlage eingebauten schaltgerätes
DE59101952D1 (de) Verfahren zum ermitteln der kurzschlussimpedanz einer zu überwachenden elektrischen energieversorgungsanlage.
DE59709871D1 (de) Rechnergestütztes verfahren zur partitionierung einer elektrischen schaltung
DD119493A1 (de) Verfahren und Vorrichtung zur Isolationsverbesserung an elektrischen isolatoren
DE69131710T2 (de) Verfahren zur Herstellung eines elektrischen Leiters mit anorganischer Isolierung
PT72382B (de) Verfahren zur elektrischen kontaktierung und isolierung eines elektrischen bauelements
ATA168086A (de) Verfahren zur ueberpruefung der enrgie eines ionenstrahles
ATA227389A (de) Hochfrequenz-signalkabel mit geringem elektrischen verlustfaktor und verfahren zur herstellung desselben
DE69827771D1 (de) Verfahren zur echtheitsüberprüfung einer elektrischen schaltungsanordnung
NO963527L (no) Fremgangsmåte for oppdagelse av delvis utlading i en isolasjon for elektriske innretninger
DE3856385D1 (de) Verfahren zur Herstellung einer elektrischen Isolierölzusammensetzung
DE59611220D1 (de) Vorrichtung zur EMV-Prüfung von elektrischen Geräten
DE69018748D1 (de) Verfahren zur Herstellung einer elektrischen Klemme.
ATA69885A (de) Verfahren zur elektrischen absicherung von spaltpolmotoren und sicherungsanordnung fuer spaltpolmotoren
DE9007704U1 (de) Vorrichtung zum automatischen Berechnen der Integrität einer elektrischen Spule

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee