SE7412288L - - Google Patents

Info

Publication number
SE7412288L
SE7412288L SE7412288A SE7412288A SE7412288L SE 7412288 L SE7412288 L SE 7412288L SE 7412288 A SE7412288 A SE 7412288A SE 7412288 A SE7412288 A SE 7412288A SE 7412288 L SE7412288 L SE 7412288L
Authority
SE
Sweden
Prior art keywords
voltage
shaft
grounding
alarm
current
Prior art date
Application number
SE7412288A
Other languages
Unknown language ( )
English (en)
Other versions
SE398945B (sv
Inventor
M J Cronin
G H Vogt
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of SE7412288L publication Critical patent/SE7412288L/
Publication of SE398945B publication Critical patent/SE398945B/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Eletrric Generators (AREA)
SE7412288A 1973-10-01 1974-09-30 Anordning for overvakning av elektrisk spenning pa en roterande axel SE398945B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00402262A US3831160A (en) 1973-10-01 1973-10-01 Voltage and current monitoring system

Publications (2)

Publication Number Publication Date
SE7412288L true SE7412288L (ko) 1975-04-02
SE398945B SE398945B (sv) 1978-01-23

Family

ID=23591196

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7412288A SE398945B (sv) 1973-10-01 1974-09-30 Anordning for overvakning av elektrisk spenning pa en roterande axel

Country Status (8)

Country Link
US (1) US3831160A (ko)
JP (1) JPS5076547A (ko)
CA (1) CA1005863A (ko)
CH (1) CH599553A5 (ko)
DE (1) DE2445122C2 (ko)
FR (1) FR2246877B1 (ko)
GB (1) GB1484304A (ko)
SE (1) SE398945B (ko)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH574181A5 (ko) * 1974-07-08 1976-03-31 Bbc Brown Boveri & Cie
CH594891A5 (ko) * 1976-04-22 1978-01-31 Bbc Brown Boveri & Cie
US4138705A (en) * 1977-04-22 1979-02-06 Lockwood Corporation Over-power safety device for motor driven system
US4242712A (en) * 1978-10-12 1980-12-30 Lockwood Corporation Over-power safety device for motor driven system
US4523187A (en) * 1980-08-29 1985-06-11 Norman W. Hutchinson & Sons Pty. Ltd. Alarm system for electric fences
US4492999A (en) * 1981-05-09 1985-01-08 Mitsubishi Denki Kabushiki Kaisha Supervisory unit for rotary electrical machinery and apparatus
US4398188A (en) * 1981-10-07 1983-08-09 Feigal Donn L Ground circuit voltage detector
JPS58184674U (ja) * 1982-06-04 1983-12-08 株式会社日立製作所 軸電圧自動測定装置
US4873512A (en) * 1984-03-20 1989-10-10 Westinghouse Electric Corp. Active shaft grounding and diagnotic system
US4755805A (en) * 1986-05-22 1988-07-05 Flowmole Corporation Current sensing alarm arrangement for monitoring the presence of high voltage
US5032826A (en) * 1987-10-29 1991-07-16 Westinghouse Electric Corp. Core monitor that uses rotor shaft voltages
US4939506A (en) * 1988-01-26 1990-07-03 Dresser-Rand Company Grounding brush monitor
US5087909A (en) * 1989-08-18 1992-02-11 Westinghouse Electric Corp. Method and apparatus for radio frequency signal detection
US5134378A (en) * 1991-03-08 1992-07-28 Michael Twerdochlib System and method for detecting faults in generator bearing pedestals and seal insulation
JPH07248342A (ja) * 1994-03-11 1995-09-26 Nippon Motorola Ltd 過電流検出回路
CA2150663A1 (en) * 1994-07-22 1996-01-23 William Ishmael Control system
US5691643A (en) * 1994-10-11 1997-11-25 Kabushiki Kaisha Toshiba Ground fault detecting apparatus and method for detecting ground fault of field circuit and exciting circuit by detecting ground fault current flowing from ground to neutral point of exciting circuit
US5913181A (en) * 1995-06-30 1999-06-15 Dallas Semiconductor Corp. Circuit for providing a switch signal to trigger changer in a digital potentiometer
US5796262A (en) * 1996-02-14 1998-08-18 Westinghouse Electric Corporation Method and apparatus for diagnosing bearing insulation impedance of a rotating electrical apparatus
US6091236A (en) * 1997-04-28 2000-07-18 Csi Technology, Inc. System and method for measuring and analyzing electrical signals on the shaft of a machine
DE19742622A1 (de) * 1997-09-26 1999-04-08 Siemens Ag Verfahren und Vorrichtung zur Überwachung von Wellenströmen und Wellenspannungen in einer Generatorwelle
US7034706B1 (en) 1999-05-06 2006-04-25 Nippes Paul I Early warning and problem detection in rotating machinery by monitoring shaft voltage and/or grounding current
US6460013B1 (en) * 1999-05-06 2002-10-01 Paul I. Nippes Shaft voltage current monitoring system for early warning and problem detection
JP2005538674A (ja) * 2002-09-10 2005-12-15 アルストム テクノロジー リミテッド 電気機械におけるブラシスパークおよびスパーク侵食を捕捉する方法および装置
US7649470B2 (en) * 2002-09-10 2010-01-19 Alstom Technology Ltd. Method and apparatus for detection of brush sparking and spark erosion on electrical machines
CH697269B1 (de) * 2004-08-12 2008-07-31 Alstom Technology Ltd Verfahren und Vorrichtung zur Detektion von Streifstellen an rotierenden Maschinen.
CH697214A5 (de) * 2005-03-04 2008-06-25 Alstom Technology Ltd Gasgekühlter Generator.
EP2217938B1 (de) * 2007-12-07 2017-05-17 General Electric Technology GmbH Verfahren zur überwachung des wellenstromes und/oder der isolation der welle von elektromaschinen
DE102010002296A1 (de) * 2010-02-24 2011-08-25 Siemens Aktiengesellschaft, 80333 Auswertungsverfahren für Lichtbogenentladungen und zugehöriger Prüfstand
DE102011108591A1 (de) * 2011-07-27 2013-01-31 Voith Patent Gmbh Überwachungsvorrichtung für eine doppelgespeiste Asynchronmaschine
GB201203376D0 (en) * 2012-02-26 2012-04-11 Scotia Gas Networks Sgn A method and apparatus for detectong when a current and/or voltage has exceeded a predetermined level
US9831739B2 (en) 2012-06-18 2017-11-28 Inpro/Seal Llc Explosion-proof current diverting device
TWI600257B (zh) * 2012-06-18 2017-09-21 英普羅密封有限責任公司 電流分流器環
EP2690422B1 (en) * 2012-07-25 2020-04-08 Ansaldo Energia IP UK Limited Method for monitoring machines with rotating shafts
JP5845427B2 (ja) 2013-10-21 2016-01-20 パナソニックＩｐマネジメント株式会社 電動機およびこの電動機を備える電気機器
CN106680716B (zh) * 2017-01-20 2019-01-08 浙江大学 一种基于无位置传感器的永磁电机轴承故障诊断的方法
AU2018282089A1 (en) 2017-06-05 2019-11-28 Cutsforth, Inc. Monitoring system for grounding apparatus
CN110470984B (zh) * 2019-07-11 2021-01-05 西北工业大学 三级式起动发电机旋转整流器故障在线检测与定位方法
CN112336983A (zh) * 2019-08-06 2021-02-09 深圳钮迈科技有限公司 用于肿瘤治疗仪的安全警报系统及其控制方法
CN111983449B (zh) * 2020-07-22 2021-06-11 西北工业大学 三级式起动/发电机发电阶段旋转整流器故障检测和定位方法
CN113960355B (zh) * 2021-10-21 2024-05-17 国网江苏省电力有限公司电力科学研究院 一种基于非接触式传感器的宽频电压监测装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE215434C (ko) *
US1996063A (en) * 1932-01-23 1935-04-02 Standard Oil Co Apparatus for testing journal bearing lubrication
US2755435A (en) * 1952-06-16 1956-07-17 Ford Motor Co Commutator checker
JPS4213443Y1 (ko) * 1964-06-19 1967-08-01
DE1217493B (de) * 1964-09-25 1966-05-26 Licentia Gmbh Einrichtung zur UEberwachung von Lagerstroemen bei elektrischen Maschinen
US3320480A (en) * 1965-02-11 1967-05-16 Charles W Failor Ground wire monitoring system
US3242382A (en) * 1965-06-25 1966-03-22 Sr Charles J Rogers Electrical safety circuit
US3407336A (en) * 1966-08-11 1968-10-22 Physio Control Corp Electronic ground-absence detector and protective device
US3483470A (en) * 1967-11-03 1969-12-09 Ram Tool Corp Apparatus for testing armatures for coil condition,shorts or leakage
GB1226451A (ko) * 1968-03-15 1971-03-31
US3766434A (en) * 1971-08-09 1973-10-16 S Sherman Safety power distribution system

Also Published As

Publication number Publication date
CH599553A5 (ko) 1978-05-31
GB1484304A (en) 1977-09-01
DE2445122A1 (de) 1975-04-03
FR2246877B1 (ko) 1981-08-21
SE398945B (sv) 1978-01-23
CA1005863A (en) 1977-02-22
JPS5076547A (ko) 1975-06-23
DE2445122C2 (de) 1983-09-22
FR2246877A1 (ko) 1975-05-02
US3831160A (en) 1974-08-20

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