CH607044A5 - - Google Patents

Info

Publication number
CH607044A5
CH607044A5 CH1031576A CH1031576A CH607044A5 CH 607044 A5 CH607044 A5 CH 607044A5 CH 1031576 A CH1031576 A CH 1031576A CH 1031576 A CH1031576 A CH 1031576A CH 607044 A5 CH607044 A5 CH 607044A5
Authority
CH
Switzerland
Application number
CH1031576A
Inventor
Gerhard Rumold
Georg Russ
Original Assignee
Siemens Ag
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
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of CH607044A5 publication Critical patent/CH607044A5/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
CH1031576A 1975-09-25 1976-08-13 CH607044A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2542811A DE2542811C2 (de) 1975-09-25 1975-09-25 Schaltungsanordnung zur Messung des Erdwiderstandes einer erdfreien Starkstromschaltung

Publications (1)

Publication Number Publication Date
CH607044A5 true CH607044A5 (de) 1978-11-30

Family

ID=5957416

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1031576A CH607044A5 (de) 1975-09-25 1976-08-13

Country Status (8)

Country Link
US (1) US4066950A (de)
JP (1) JPS5241564A (de)
CA (1) CA1067580A (de)
CH (1) CH607044A5 (de)
DE (1) DE2542811C2 (de)
FR (1) FR2325941A1 (de)
GB (1) GB1538962A (de)
SE (1) SE410902B (de)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369680A (en) * 1976-12-02 1978-06-21 Sumitomo Metal Ind Insulation resistance measuring device
US4200835A (en) * 1978-05-30 1980-04-29 Fuji Electric Co., Ltd. Method and apparatus for measuring the insulation resistance of an operating grounded transmission line system
US4200836A (en) * 1978-06-13 1980-04-29 Fuji Electric Co., Ltd. Apparatus for measuring insulation resistance in an operating three-phase ungrounded transmission line system
US4422034A (en) * 1980-01-22 1983-12-20 Toyo Sushinki Kabushiki Kaisha Method for measuring insulation resistance and device therefor
JPS59103285U (ja) * 1982-12-27 1984-07-11 三菱重工業株式会社 電路の絶縁監視装置
JPS59103286U (ja) * 1982-12-27 1984-07-11 三菱重工業株式会社 電路の絶縁監視装置
JPS6078359A (ja) * 1983-10-05 1985-05-04 Hitachi Ltd 静止レオナ−ド装置
US4809123A (en) * 1986-04-14 1989-02-28 Isco, Inc. Ground fault detector for high-voltage DC power supplies
US4857826A (en) * 1986-11-26 1989-08-15 Polytronics, Inc. Tester system for electrical power circuits terminated at an outlet plug receptacle
FR2616228B1 (fr) * 1987-06-04 1989-09-08 Merlin Gerin Dispositif de controle et de mesure de l'isolement d'un reseau electrique
FR2647219B1 (fr) * 1989-05-22 1991-07-05 Merlin Gerin Procede de correction du dephasage introduit par un tore homopolaire d'un courant de fuite et controleur d'isolement de mise en oeuvre de ce procede
DE4234808A1 (de) * 1992-10-15 1994-04-21 Walther Bender Gmbh & Co Kg Di Verfahren zum Bestimmen der elektrischen Netzableitgrößen in ungeerdeten elektrischen Netzen
US5446682A (en) * 1994-03-21 1995-08-29 Square D Company System for calibrating a line isolation monitor
US5448491A (en) * 1994-03-21 1995-09-05 Square D Company Monitor for an ungrounded system
DE19860721B4 (de) * 1998-12-23 2007-12-20 Siemens Ag Dreipunkt-Umrichter und Verfahren zu seinem Betreiben
US7498818B2 (en) * 2006-08-25 2009-03-03 Schweitzer Engineering Laboratories, Inc. Apparatus and method for detecting a brush liftoff in a synchronous generator rotor circuit
JP5052414B2 (ja) * 2008-05-28 2012-10-17 ダイハツ工業株式会社 車両用絶縁抵抗測定装置
US8405940B2 (en) * 2009-10-13 2013-03-26 Schweitzer Engineering Laboratories Inc Systems and methods for generator ground fault protection
CN101968513A (zh) * 2010-08-24 2011-02-09 扬州飞驰动力科技有限公司 动力电池组的接地电阻检测系统
JP5493135B2 (ja) * 2011-03-22 2014-05-14 日立建機株式会社 建設機械
DE102011050590A1 (de) 2011-05-24 2012-11-29 Sma Solar Technology Ag Isolationsüberwachung mit einem Prüfsignal variabler Frequenz
FR2976361B1 (fr) * 2011-06-08 2015-07-31 Renault Sa Dispositif et procede correspondant de mesure de la resistance du raccordement a la terre d'un appareil electrique
US10288688B2 (en) 2014-07-24 2019-05-14 Schweitzer Engineering Laboratories, Inc. Systems and methods for monitoring and protecting an electric power generator
US9496707B2 (en) 2014-12-22 2016-11-15 Schweitzer Engineering Laboratories, Inc. Generator protection element
DE102016200309B3 (de) * 2016-01-13 2017-03-09 Bender Gmbh & Co. Kg Verfahren zum Erkennen einer Unterbrechung eines aktiven Leiters in einem ungeerdeten Gleichspannungs-Stromversorgungssystem
US10333291B2 (en) 2017-09-25 2019-06-25 Schweitzer Engineering Laboratories, Inc. Multiple generator ground fault detection
US10931097B2 (en) 2017-09-25 2021-02-23 Schweitzer Engineering Laboratories, Inc. Generator stator ground protection using third harmonic
US10797632B2 (en) 2018-08-21 2020-10-06 Schweitzer Engineering Laboratories, Inc. Sensitive directional element for generator protection
US11316455B2 (en) 2019-08-28 2022-04-26 Schweitzer Engineering Laboratories, Inc. Generator rotor turn-to-turn fault detection using fractional harmonics
US10819261B1 (en) 2019-10-25 2020-10-27 Schweitzer Engineering Laboratories, Inc. Security improvements for electric power generator protection
US11631972B2 (en) 2020-12-16 2023-04-18 Schweitzer Engineering Laboratories, Inc. Accurate modeling of equipment overexcitation damage curves
US11946966B1 (en) 2023-02-20 2024-04-02 Schweitzer Engineering Laboratories, Inc. Selective stator ground fault protection using positive-sequence voltage reference

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE630203A (de) * 1962-04-11
US3284705A (en) * 1965-08-23 1966-11-08 Tennessee Valley Authority Direct-reading carrier frequency impedance meter
CH567343A5 (de) * 1973-12-20 1975-09-30 Secheron Atel
CA1001233A (en) * 1974-06-24 1976-12-07 Canadian General Electric Company Limited Impedance monitoring circuit
US3967191A (en) * 1975-02-28 1976-06-29 Gte Sylvania Incorporated Method and apparatus for non-destructively measuring internal film resistance in a fluorescent lamp

Also Published As

Publication number Publication date
GB1538962A (en) 1979-01-24
FR2325941B1 (de) 1978-12-15
DE2542811C2 (de) 1979-08-23
CA1067580A (en) 1979-12-04
JPS5241564A (en) 1977-03-31
SE410902B (sv) 1979-11-12
DE2542811A1 (de) 1976-11-11
US4066950A (en) 1978-01-03
SE7609824L (sv) 1977-03-26
JPS5714507B2 (de) 1982-03-25
FR2325941A1 (fr) 1977-04-22
DE2542811B1 (de) 1976-11-11

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Legal Events

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