GB1552829A – Line isolation monitor
– Google Patents
GB1552829A – Line isolation monitor
– Google Patents
Line isolation monitor
Info
Publication number
GB1552829A
GB1552829A
GB20402/76A
GB2040276A
GB1552829A
GB 1552829 A
GB1552829 A
GB 1552829A
GB 20402/76 A
GB20402/76 A
GB 20402/76A
GB 2040276 A
GB2040276 A
GB 2040276A
GB 1552829 A
GB1552829 A
GB 1552829A
Authority
GB
United Kingdom
Prior art keywords
line isolation
isolation monitor
monitor
line
isolation
Prior art date
1975-08-29
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
Application number
GB20402/76A
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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.)
1975-08-29
Filing date
1976-05-18
Publication date
1979-09-19
1976-05-18
Application filed by Square D Co
filed
Critical
Square D Co
1979-09-19
Publication of GB1552829A
publication
Critical
patent/GB1552829A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
GB20402/76A
1975-08-29
1976-05-18
Line isolation monitor
Expired
GB1552829A
(en)
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
GB1552829A
true
GB1552829A
(en)
1979-09-19
Family
ID=24438966
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB20402/76A
Expired
GB1552829A
(en)
1975-08-29
1976-05-18
Line isolation monitor
Country Status (8)
Country
Link
US
(1)
US3976987A
(en)
AU
(1)
AU504535B2
(en)
CA
(1)
CA1052864A
(en)
DE
(1)
DE2630982C3
(en)
FR
(1)
FR2322378A1
(en)
GB
(1)
GB1552829A
(en)
IT
(1)
IT1071198B
(en)
ZA
(1)
ZA763055B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN109839556A
(en)
*
2017-11-28
2019-06-04
弗兰克公司
Use the electric signal measurement equipment of reference signal
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Priority date
Publication date
Assignee
Title
US4080640A
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*
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
(en)
*
1981-03-31
1994-05-05
Walther Bender Gmbh & Co Kg Di
Method and device for determining the total lead impedance in an ungrounded AC network
US4528497A
(en)
*
1982-08-23
1985-07-09
Isolation Systems Limited
Method and apparatus for monitoring ground faults in isolated electrical systems
DE3513848A1
(en)
*
1985-04-17
1986-10-23
Quante Fernmeldetechnik GmbH, 5600 Wuppertal
Circuit for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device
US4809123A
(en)
*
1986-04-14
1989-02-28
Isco, Inc.
Ground fault detector for high-voltage DC power supplies
SE464375B
(en)
*
1986-10-03
1991-04-15
Fuji Electric Co Ltd
SETTING TO DIGITALIZE A FOOT DIFFERENCE IN A ZINO-OXIDE TYPE EXERCISOR USING VECTOR SYNTHESIS
FR2616228B1
(en)
*
1987-06-04
1989-09-08
Merlin Gerin
DEVICE FOR MONITORING AND MEASURING THE INSULATION OF AN ELECTRICAL NETWORK
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
US5448491A
(en)
*
1994-03-21
1995-09-05
Square D Company
Monitor for an ungrounded system
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
US6388435B1
(en)
*
1998-12-31
2002-05-14
General Electric Company
Methods and apparatus for voltage measurement
US6646837B2
(en)
2000-11-06
2003-11-11
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
EP1647232B1
(en)
2001-12-03
2011-08-17
Ekos Corporation
Catheter with multiple ultrasound radiating members
US7323878B2
(en)
*
2005-11-10
2008-01-29
Magicground Technology Llc
Ground testing method and apparatus
WO2009002881A1
(en)
2007-06-22
2008-12-31
Ekos Corporation
Method and apparatus for treatment of intracranial hemorrhages
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
US8619443B2
(en)
2010-09-29
2013-12-31
The Powerwise Group, Inc.
System and method to boost voltage
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
US8120307B2
(en)
2007-08-24
2012-02-21
The Powerwise Group, Inc.
System and method for providing constant loading in AC power applications
US8698447B2
(en)
2007-09-14
2014-04-15
The Powerwise Group, Inc.
Energy saving system and method for devices with rotating or reciprocating masses
US8810190B2
(en)
2007-09-14
2014-08-19
The Powerwise Group, Inc.
Motor controller system and method for maximizing energy savings
US8004255B2
(en)
2008-08-07
2011-08-23
The Powerwise Group, Inc.
Power supply for IGBT/FET drivers
US8698446B2
(en)
2009-09-08
2014-04-15
The Powerwise Group, Inc.
Method to save energy for devices with rotating or reciprocating masses
KR101816058B1
(en)
2009-09-08
2018-01-08
더 파워와이즈 그룹, 인코포레이티드
Energy saving system and method for devices with rotating or reciprocating masses
US11458290B2
(en)
2011-05-11
2022-10-04
Ekos Corporation
Ultrasound system
DE102011050590A1
(en)
*
2011-05-24
2012-11-29
Sma Solar Technology Ag
Insulation monitoring with a test signal of variable frequency
WO2012169050A1
(en)
*
2011-06-09
2012-12-13
トヨタ自動車株式会社
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
(en)
*
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
(en)
*
2015-05-25
2018-09-05
アルプス電気株式会社
Sensor abnormality detection device and sensor device
CN107708581B
(en)
2015-06-10
2021-11-19
Ekos公司
Ultrasonic wave guide tube
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)
* Cited by examiner, † Cited by third party
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/en
unknown
1976-05-27
AU
AU14356/76A
patent/AU504535B2/en
not_active
Expired
1976-07-09
DE
DE2630982A
patent/DE2630982C3/en
not_active
Expired
1976-07-23
FR
FR7622487A
patent/FR2322378A1/en
active
Granted
1976-08-26
IT
IT69091/76A
patent/IT1071198B/en
active
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN109839556A
(en)
*
2017-11-28
2019-06-04
弗兰克公司
Use the electric signal measurement equipment of reference signal
CN109839556B
(en)
*
2017-11-28
2023-11-17
弗兰克公司
Electrical signal measuring device using reference signal
Also Published As
Publication number
Publication date
ZA763055B
(en)
1977-04-27
AU504535B2
(en)
1979-10-18
FR2322378A1
(en)
1977-03-25
US3976987A
(en)
1976-08-24
CA1052864A
(en)
1979-04-17
AU1435676A
(en)
1977-12-01
DE2630982B2
(en)
1978-07-27
DE2630982A1
(en)
1977-03-10
DE2630982C3
(en)
1979-03-29
IT1071198B
(en)
1985-04-02
FR2322378B1
(en)
1982-07-30
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Legal Events
Date
Code
Title
Description
1980-01-03
PS
Patent sealed [section 19, patents act 1949]
1994-01-12
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19930518
