CA1052864A - Dual channel dynamic line isolation monitor - Google Patents
Dual channel dynamic line isolation monitorInfo
- Publication number
- CA1052864A CA1052864A CA251,923A CA251923A CA1052864A CA 1052864 A CA1052864 A CA 1052864A CA 251923 A CA251923 A CA 251923A CA 1052864 A CA1052864 A CA 1052864A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- current
- voltage
- measurement current
- monitor
- 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
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 24
- 230000009977 dual effect Effects 0.000 title abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 137
- 239000004020 conductor Substances 0.000 claims abstract description 63
- 230000004044 response Effects 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims 3
- 230000001953 sensory effect Effects 0.000 claims 1
- 239000000306 component Substances 0.000 description 83
- 239000003990 capacitor Substances 0.000 description 34
- 238000012360 testing method Methods 0.000 description 21
- 230000001105 regulatory effect Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- 230000002829 reductive effect Effects 0.000 description 9
- 239000002131 composite material Substances 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 210000004165 myocardium Anatomy 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/609,002 US3976987A (en) | 1975-08-29 | 1975-08-29 | Dual channel dynamic line isolation monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1052864A true CA1052864A (en) | 1979-04-17 |
Family
ID=24438966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,923A Expired CA1052864A (en) | 1975-08-29 | 1976-05-06 | Dual channel dynamic line isolation monitor |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3976987A (show.php) |
| AU (1) | AU504535B2 (show.php) |
| CA (1) | CA1052864A (show.php) |
| DE (1) | DE2630982C3 (show.php) |
| FR (1) | FR2322378A1 (show.php) |
| GB (1) | GB1552829A (show.php) |
| IT (1) | IT1071198B (show.php) |
| ZA (1) | ZA763055B (show.php) |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080640A (en) * | 1976-09-27 | 1978-03-21 | Westinghouse Electric Corporation | People-protecting ground fault circuit interrupter |
| US4206398A (en) * | 1978-04-26 | 1980-06-03 | Esb Incorporated | Method of and apparatus for detecting ground faults in isolated power supply systems |
| US4422034A (en) * | 1980-01-22 | 1983-12-20 | Toyo Sushinki Kabushiki Kaisha | Method for measuring insulation resistance and device therefor |
| US4417202A (en) * | 1981-01-30 | 1983-11-22 | American Standard Inc. | Vital DC source ground fault detector apparatus |
| DE3112952C2 (de) * | 1981-03-31 | 1994-05-05 | Walther Bender Gmbh & Co Kg Di | Verfahren und Einrichtung zum Bestimmen der Gesamtableitungsimpedanz in einem ungeerdeten Wechselstromnetz |
| US4528497A (en) * | 1982-08-23 | 1985-07-09 | Isolation Systems Limited | Method and apparatus for monitoring ground faults in isolated electrical systems |
| DE3513848A1 (de) * | 1985-04-17 | 1986-10-23 | Quante Fernmeldetechnik GmbH, 5600 Wuppertal | Schaltung zur ueberwachung der isolationswiderstaende einer schar von baugruppen einer elektrischen anlage mit gemeinsamer erdfreier stromversorgung, insbesondere einer fernmelde- oder signaltechnischen einrichtung |
| US4809123A (en) * | 1986-04-14 | 1989-02-28 | Isco, Inc. | Ground fault detector for high-voltage DC power supplies |
| US4866393A (en) * | 1986-10-03 | 1989-09-12 | Fuji Electric Co., Ltd. | Method of diagnosing the deterioration of a zinc oxide type lightning arrester utilizing vector synthesis |
| FR2616228B1 (fr) * | 1987-06-04 | 1989-09-08 | Merlin Gerin | Dispositif de controle et de mesure de l'isolement d'un reseau electrique |
| US5448491A (en) * | 1994-03-21 | 1995-09-05 | Square D Company | Monitor for an ungrounded system |
| US5446682A (en) * | 1994-03-21 | 1995-08-29 | Square D Company | System for calibrating a line isolation monitor |
| US5450328A (en) * | 1994-03-21 | 1995-09-12 | Square D Company | System for measuring line to ground impedance |
| US5514964A (en) * | 1994-08-17 | 1996-05-07 | Square D Company | System for monitoring a dual voltage ungrounded system for leakage currents |
| US6081122A (en) * | 1995-06-09 | 2000-06-27 | Bausch & Lomb Surgical, Inc. | Electrical ground fault detection apparatus |
| RU2122215C1 (ru) * | 1996-09-20 | 1998-11-20 | Российский государственный открытый технический университет путей сообщения | Устройство для контроля качества электрической изоляции |
| RU2144679C1 (ru) * | 1998-02-20 | 2000-01-20 | Малафеев Сергей Иванович | Способ контроля сопротивления изоляции и защиты электрической сети |
| US6388435B1 (en) * | 1998-12-31 | 2002-05-14 | General Electric Company | Methods and apparatus for voltage measurement |
| WO2002037908A2 (en) | 2000-11-06 | 2002-05-10 | Ballard Power Systems Corporation | Active ground current reduction device |
| US6667692B2 (en) * | 2001-06-29 | 2003-12-23 | Landis+Gyr Inc. | Electrical utility meter having harmonic data templates for power quality alarm thresholds |
| AU2002359576A1 (en) * | 2001-12-03 | 2003-06-17 | Ekos Corporation | Catheter with multiple ultrasound radiating members |
| RU2244371C2 (ru) * | 2002-12-09 | 2005-01-10 | ЗАО "Электротехнические системы 1" | Устройство для контроля изоляции электрических машин |
| US7323878B2 (en) * | 2005-11-10 | 2008-01-29 | Magicground Technology Llc | Ground testing method and apparatus |
| EP1936393A1 (en) * | 2006-12-22 | 2008-06-25 | Abb Research Ltd. | Impedance measurement arrangement and method |
| US10182833B2 (en) | 2007-01-08 | 2019-01-22 | Ekos Corporation | Power parameters for ultrasonic catheter |
| EP2170181B1 (en) | 2007-06-22 | 2014-04-16 | Ekos Corporation | Method and apparatus for treatment of intracranial hemorrhages |
| US8619443B2 (en) | 2010-09-29 | 2013-12-31 | The Powerwise Group, Inc. | System and method to boost voltage |
| US8085009B2 (en) | 2007-08-13 | 2011-12-27 | The Powerwise Group, Inc. | IGBT/FET-based energy savings device for reducing a predetermined amount of voltage using pulse width modulation |
| US8120307B2 (en) | 2007-08-24 | 2012-02-21 | The Powerwise Group, Inc. | System and method for providing constant loading in AC power applications |
| US8085010B2 (en) | 2007-08-24 | 2011-12-27 | The Powerwise Group, Inc. | TRIAC/SCR-based energy savings device for reducing a predetermined amount of voltage using pulse width modulation |
| US8810190B2 (en) | 2007-09-14 | 2014-08-19 | The Powerwise Group, Inc. | Motor controller system and method for maximizing energy savings |
| US8698447B2 (en) | 2007-09-14 | 2014-04-15 | The Powerwise Group, Inc. | Energy saving system and method for devices with rotating or reciprocating masses |
| US8004255B2 (en) | 2008-08-07 | 2011-08-23 | The Powerwise Group, Inc. | Power supply for IGBT/FET drivers |
| EP2475888B1 (en) | 2009-09-08 | 2019-04-24 | The Powerwise Group, Inc. | Energy saving system and method for devices with rotating or reciprocating masses |
| US8698446B2 (en) | 2009-09-08 | 2014-04-15 | The Powerwise Group, Inc. | Method to save energy for devices with rotating or reciprocating masses |
| US11458290B2 (en) | 2011-05-11 | 2022-10-04 | Ekos Corporation | Ultrasound system |
| DE102011050590A1 (de) | 2011-05-24 | 2012-11-29 | Sma Solar Technology Ag | Isolationsüberwachung mit einem Prüfsignal variabler Frequenz |
| EP2720347B1 (en) * | 2011-06-09 | 2017-04-05 | Toyota Jidosha Kabushiki Kaisha | Power supply apparatus for vehicle |
| US9319101B2 (en) * | 2012-09-28 | 2016-04-19 | Siemens Industry, Inc. | System and method for ground fault detection in a transformer isolated communication channel of a network device |
| EP2869075A1 (en) * | 2013-11-04 | 2015-05-06 | ABB Technology AG | System and method for detecting a leakage from power cables of a DC bus to ground |
| TWI539169B (zh) * | 2014-04-08 | 2016-06-21 | Univ Kao Yuan | High Sensitivity Non - grounded DC Power Supply Insulation Resistance Detection Method and Its Circuit |
| US10092742B2 (en) | 2014-09-22 | 2018-10-09 | Ekos Corporation | Catheter system |
| JP6386970B2 (ja) * | 2015-05-25 | 2018-09-05 | アルプス電気株式会社 | センサの異常検出装置及びセンサ装置 |
| HK1249389A1 (zh) | 2015-06-10 | 2018-11-02 | Ekos公司 | 超声波导管 |
| US10509063B2 (en) * | 2017-11-28 | 2019-12-17 | Fluke Corporation | Electrical signal measurement device using reference signal |
| US10931223B2 (en) | 2019-05-08 | 2021-02-23 | Regal Beloit America, Inc. | Circuit for detecting status of ground connection in an electric motor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3579219A (en) * | 1968-11-19 | 1971-05-18 | Sola Basic Ind Inc | Leakage-current detector |
| CA938674A (en) * | 1970-12-22 | 1973-12-18 | K. G. Stelter Manfred | Ground fault detector |
| US3696366A (en) * | 1971-03-22 | 1972-10-03 | Edwards Co | Ground detector system having fast response and decoupling of detector circuit |
| US3710238A (en) * | 1971-04-27 | 1973-01-09 | Sola Basic Ind Inc | Sensitive sound fault meter and detector utilizing a double side band frequency current-generator |
| US3666993A (en) * | 1971-05-13 | 1972-05-30 | Electromagnetic Ind Inc | Static hazard detector for isolated alternating current supply lines |
| US3668472A (en) * | 1971-05-17 | 1972-06-06 | Gilbert Associates | Ground detection circuit for a d.c. distribution network |
| US3700966A (en) * | 1971-05-19 | 1972-10-24 | Paul Morrow | Monitoring circuit for detecting leakage currents |
| US3737765A (en) * | 1971-06-21 | 1973-06-05 | Hubbell Inc Harvey | Isolated power ground fault detector system |
| US3699392A (en) * | 1971-11-22 | 1972-10-17 | Joo C Lee | Ground fault detection system with sequential line testing |
| CA948279A (en) * | 1972-05-09 | 1974-05-28 | Victor Beresnikow | Dynamic ground detector |
| US3868665A (en) * | 1974-02-08 | 1975-02-25 | Midland Ross Corp | Ground fault current detector |
-
1975
- 1975-08-29 US US05/609,002 patent/US3976987A/en not_active Expired - Lifetime
-
1976
- 1976-05-06 CA CA251,923A patent/CA1052864A/en not_active Expired
- 1976-05-18 GB GB20402/76A patent/GB1552829A/en not_active Expired
- 1976-05-24 ZA ZA763055A patent/ZA763055B/xx unknown
- 1976-05-27 AU AU14356/76A patent/AU504535B2/en not_active Expired
- 1976-07-09 DE DE2630982A patent/DE2630982C3/de not_active Expired
- 1976-07-23 FR FR7622487A patent/FR2322378A1/fr active Granted
- 1976-08-26 IT IT69091/76A patent/IT1071198B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2322378B1 (show.php) | 1982-07-30 |
| DE2630982A1 (de) | 1977-03-10 |
| AU1435676A (en) | 1977-12-01 |
| FR2322378A1 (fr) | 1977-03-25 |
| US3976987A (en) | 1976-08-24 |
| IT1071198B (it) | 1985-04-02 |
| DE2630982C3 (de) | 1979-03-29 |
| ZA763055B (en) | 1977-04-27 |
| AU504535B2 (en) | 1979-10-18 |
| DE2630982B2 (de) | 1978-07-27 |
| GB1552829A (en) | 1979-09-19 |
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