GB2000398A - Improvements relating to electrical fault sensitive apparatus for use with mains powered earthed electrical installations - Google Patents

Improvements relating to electrical fault sensitive apparatus for use with mains powered earthed electrical installations

Info

Publication number
GB2000398A
GB2000398A GB7826489A GB7826489A GB2000398A GB 2000398 A GB2000398 A GB 2000398A GB 7826489 A GB7826489 A GB 7826489A GB 7826489 A GB7826489 A GB 7826489A GB 2000398 A GB2000398 A GB 2000398A
Authority
GB
United Kingdom
Prior art keywords
electrical
earthed
mains
improvements relating
circuit
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.)
Granted
Application number
GB7826489A
Other versions
GB2000398B (en
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.)
Hazemeijer BV
Original Assignee
Hazemeijer BV
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 Hazemeijer BV filed Critical Hazemeijer BV
Publication of GB2000398A publication Critical patent/GB2000398A/en
Application granted granted Critical
Publication of GB2000398B publication Critical patent/GB2000398B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

When an AC mains powered electrical installation (5) having an earthed electrode (9) is provided with fault-responsive apparatus (6) powered by a circuit (10) which is also connected to the mains (3), it is desirable that the apparatus (6) should be arranged to perform its intended function even if the fault develops in the mains supply. For this purpose it is known for the power circuit (10) to comprise a rectifier circuit (22), first and second terminals (11, 12) for connection to the phase and neutral lines (7, 8) of the mains supply (3), and also a third terminal (13) for connection to the earth electrode (9) so that in the event of a break (20) in the neutral line (8) the power circuit (10) remains energised via the earth electrode (9) and the third terminal (13). In the invention, the power circuit (10) is made safer by providing a second rectifier circuit (24) between the third terminal (13) and the first rectifier circuit (22). <IMAGE>
GB7826489A 1977-06-14 1978-06-07 Improvements relating to power supply circuits for functional apparatus which is used in conjunction with mains powered earthed electrical installations or devices Expired GB2000398B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7706569,A NL176508C (en) 1977-06-14 1977-06-14 NUTRITION EQUIPMENT FOR A PROTECTION DEVICE, SUCH AS AN EARTH DETECTION DEVICE, AND PROTECTION EQUIPMENT EQUIPPED WITH SUCH A NUTRITION EQUIPMENT.

Publications (2)

Publication Number Publication Date
GB2000398A true GB2000398A (en) 1979-01-04
GB2000398B GB2000398B (en) 1982-05-26

Family

ID=19828725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826489A Expired GB2000398B (en) 1977-06-14 1978-06-07 Improvements relating to power supply circuits for functional apparatus which is used in conjunction with mains powered earthed electrical installations or devices

Country Status (14)

Country Link
JP (1) JPS5418051A (en)
AT (1) AT360107B (en)
AU (1) AU521159B2 (en)
BE (1) BE867928A (en)
CH (1) CH650619A5 (en)
DE (1) DE2825881C2 (en)
DK (1) DK150056C (en)
ES (1) ES470730A1 (en)
FR (1) FR2394911A1 (en)
GB (1) GB2000398B (en)
IT (1) IT1096644B (en)
NL (1) NL176508C (en)
NO (1) NO149405C (en)
SE (1) SE7806879A0 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215149A (en) * 1988-02-08 1989-09-13 Shakira Ltd Ground fault current interrupter with open neutral/ground lead operation
US4933801A (en) * 1989-04-19 1990-06-12 Square D Company Ground fault circuit interrupter
US4994933A (en) * 1989-04-19 1991-02-19 Square D Company Ground fault circuit interrupter having loss of neutral or loss of ground protection
US5016135A (en) * 1989-04-19 1991-05-14 Square D Company Power supply incorporating circuit breaker and fault detection circuit
GB2269064A (en) * 1992-07-22 1994-01-26 Technology Res Corp Ground fault circuit interrupter.
CN1042683C (en) * 1993-07-09 1999-03-24 断路器工业有限公司 An earth leakage unit
US20090302688A1 (en) * 2006-05-30 2009-12-10 John Talbot Boys Inductive Power Transfer System Pick-Up Circuit
EP2752981A1 (en) * 2012-11-29 2014-07-09 Kyocera Document Solutions Inc. Earth leakage circuit breaker and image forming apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855923A1 (en) * 1978-12-23 1980-07-10 Schutzapparate Paris & Co CIRCUIT ARRANGEMENT FOR GENERATING A POWER SUPPLY DERIVED FROM A MULTIPLE WIRE NETWORK FOR RECTIFIER CURRENT SWITCHES BY RECTIFIER
DE2938124A1 (en) * 1979-09-20 1981-04-09 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT, ESPECIALLY FOR MULTIPOLAR FAULT CURRENT CIRCUIT BREAKERS
FR2549287B1 (en) * 1983-07-13 1988-07-29 Etude Realisation Disjoncteurs DEVICE FOR DIFFERENTIAL CIRCUIT BREAKER FOR MAINTAINING PROTECTION IN THE EVENT OF NEUTRAL CUT
JPS60108230U (en) * 1983-12-27 1985-07-23 永大産業株式会社 Furniture for storing goods
AT383906B (en) * 1985-04-16 1987-09-10 Cti Ges Zur Pruefung Elektrote Fault current protection switch for fault change and fault current
FR2624646B1 (en) * 1987-12-10 1994-03-04 Merlin Et Gerin

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107879A (en) * 1964-04-17 1968-03-27 J A Crabtree Proprietary Ltd Improvements in or relating to earth leakage protection devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107879A (en) * 1964-04-17 1968-03-27 J A Crabtree Proprietary Ltd Improvements in or relating to earth leakage protection devices

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215149A (en) * 1988-02-08 1989-09-13 Shakira Ltd Ground fault current interrupter with open neutral/ground lead operation
US4933801A (en) * 1989-04-19 1990-06-12 Square D Company Ground fault circuit interrupter
US4994933A (en) * 1989-04-19 1991-02-19 Square D Company Ground fault circuit interrupter having loss of neutral or loss of ground protection
US5016135A (en) * 1989-04-19 1991-05-14 Square D Company Power supply incorporating circuit breaker and fault detection circuit
GB2269064A (en) * 1992-07-22 1994-01-26 Technology Res Corp Ground fault circuit interrupter.
US6381113B1 (en) 1992-07-22 2002-04-30 Technology Research Corporation Leakage current protection device adapted to a wide variety of domestic and international applications
CN1042683C (en) * 1993-07-09 1999-03-24 断路器工业有限公司 An earth leakage unit
US20090302688A1 (en) * 2006-05-30 2009-12-10 John Talbot Boys Inductive Power Transfer System Pick-Up Circuit
US8941266B2 (en) * 2006-05-30 2015-01-27 Auckland Uniservices Limited Inductive power transfer system pick-up circuit
EP2752981A1 (en) * 2012-11-29 2014-07-09 Kyocera Document Solutions Inc. Earth leakage circuit breaker and image forming apparatus
US9013841B2 (en) 2012-11-29 2015-04-21 Kyocera Document Solutions Inc. Earth leakage circuit breaker and image forming apparatus

Also Published As

Publication number Publication date
AU521159B2 (en) 1982-03-18
NL176508B (en) 1984-11-16
JPS6149888B2 (en) 1986-10-31
FR2394911B1 (en) 1984-11-02
NO149405C (en) 1984-04-11
JPS5418051A (en) 1979-02-09
ES470730A1 (en) 1979-10-16
DE2825881A1 (en) 1979-01-04
DK150056B (en) 1986-11-24
NO149405B (en) 1984-01-02
ATA430578A (en) 1980-05-15
CH650619A5 (en) 1985-07-31
NL7706569A (en) 1978-12-18
DK261078A (en) 1978-12-15
GB2000398B (en) 1982-05-26
BE867928A (en) 1978-12-08
AU3705778A (en) 1979-12-20
NL176508C (en) 1985-04-16
FR2394911A1 (en) 1979-01-12
DK150056C (en) 1987-05-11
NO782058L (en) 1978-12-15
DE2825881C2 (en) 1984-12-20
IT7824484A0 (en) 1978-06-12
IT1096644B (en) 1985-08-26
SE7806879A0 (en) 1978-12-15
AT360107B (en) 1980-12-29

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19980606