GB2292491B - Electric switches - Google Patents

Electric switches

Info

Publication number
GB2292491B
GB2292491B GB9516620A GB9516620A GB2292491B GB 2292491 B GB2292491 B GB 2292491B GB 9516620 A GB9516620 A GB 9516620A GB 9516620 A GB9516620 A GB 9516620A GB 2292491 B GB2292491 B GB 2292491B
Authority
GB
United Kingdom
Prior art keywords
electric switches
switches
electric
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 - Lifetime
Application number
GB9516620A
Other versions
GB9516620D0 (en
GB2292491A (en
Inventor
Henry Charles Horton
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.)
Crabtree Electrical Industries Ltd
Original Assignee
Crabtree Electrical Industries Ltd
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 Crabtree Electrical Industries Ltd filed Critical Crabtree Electrical Industries Ltd
Publication of GB9516620D0 publication Critical patent/GB9516620D0/en
Publication of GB2292491A publication Critical patent/GB2292491A/en
Application granted granted Critical
Publication of GB2292491B publication Critical patent/GB2292491B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H02H3/335—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 the main function being self testing of the device
GB9516620A 1994-08-16 1995-08-14 Electric switches Expired - Lifetime GB2292491B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9416569A GB9416569D0 (en) 1994-08-16 1994-08-16 Residual current devices

Publications (3)

Publication Number Publication Date
GB9516620D0 GB9516620D0 (en) 1995-10-18
GB2292491A GB2292491A (en) 1996-02-21
GB2292491B true GB2292491B (en) 1998-12-30

Family

ID=10759950

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9416569A Pending GB9416569D0 (en) 1994-08-16 1994-08-16 Residual current devices
GB9516620A Expired - Lifetime GB2292491B (en) 1994-08-16 1995-08-14 Electric switches

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9416569A Pending GB9416569D0 (en) 1994-08-16 1994-08-16 Residual current devices

Country Status (1)

Country Link
GB (2) GB9416569D0 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7737809B2 (en) 2003-02-03 2010-06-15 Leviton Manufacturing Co., Inc. Circuit interrupting device and system utilizing bridge contact mechanism and reset lockout
US7764151B2 (en) 1998-08-24 2010-07-27 Leviton Manufacturing Co., Ltd. Circuit interrupting device with reverse wiring protection
US7804255B2 (en) 2007-07-26 2010-09-28 Leviton Manufacturing Company, Inc. Dimming system powered by two current sources and having an operation indicator module
US7907371B2 (en) 1998-08-24 2011-03-15 Leviton Manufacturing Company, Inc. Circuit interrupting device with reset lockout and reverse wiring protection and method of manufacture
US7944331B2 (en) 2003-02-03 2011-05-17 Leviton Manufacturing Co., Inc. Circuit interrupting device with reverse wiring protection
US8004804B2 (en) 2000-10-16 2011-08-23 Leviton Manufacturing Co., Inc. Circuit interrupter having at least one indicator
US8089738B2 (en) 2002-05-09 2012-01-03 Hubbell Incorporated GFCI that cannot be reset until wired correctly on line side and power is applied
US8444309B2 (en) 2010-08-13 2013-05-21 Leviton Manufacturing Company, Inc. Wiring device with illumination
US8526144B2 (en) 2011-03-31 2013-09-03 Leviton Manufacturing Company, Inc. Reset lockout with grounded neutral test
US8587914B2 (en) 2008-07-07 2013-11-19 Leviton Manufacturing Co., Inc. Fault circuit interrupter device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305315B (en) * 1995-09-15 1999-05-05 Crabtree Electrical Ind Ltd Residual current devices
NZ524371A (en) * 2002-03-12 2004-03-26 H Circuit breaker having a primary contact, wherein the test and activation circuits are disconnected from mains when primary contact is open
DE102004045937B4 (en) * 2004-09-22 2007-12-27 Siemens Ag Blocking device and method for a circuit breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204198A (en) * 1987-03-09 1988-11-02 Qualcast Garden Prod Socket with residual current circuit breaker and test facility
US4825329A (en) * 1986-08-29 1989-04-25 Flymo Limited Earth leakage circuit breaker with plug actuated resetting breaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825329A (en) * 1986-08-29 1989-04-25 Flymo Limited Earth leakage circuit breaker with plug actuated resetting breaker
GB2204198A (en) * 1987-03-09 1988-11-02 Qualcast Garden Prod Socket with residual current circuit breaker and test facility

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7907371B2 (en) 1998-08-24 2011-03-15 Leviton Manufacturing Company, Inc. Circuit interrupting device with reset lockout and reverse wiring protection and method of manufacture
US7764151B2 (en) 1998-08-24 2010-07-27 Leviton Manufacturing Co., Ltd. Circuit interrupting device with reverse wiring protection
US8130480B2 (en) 1998-08-24 2012-03-06 Leviton Manufactuing Co., Inc. Circuit interrupting device with reset lockout
US8054595B2 (en) 1998-08-24 2011-11-08 Leviton Manufacturing Co., Inc. Circuit interrupting device with reset lockout
US8004804B2 (en) 2000-10-16 2011-08-23 Leviton Manufacturing Co., Inc. Circuit interrupter having at least one indicator
US8089738B2 (en) 2002-05-09 2012-01-03 Hubbell Incorporated GFCI that cannot be reset until wired correctly on line side and power is applied
US7944331B2 (en) 2003-02-03 2011-05-17 Leviton Manufacturing Co., Inc. Circuit interrupting device with reverse wiring protection
US7737809B2 (en) 2003-02-03 2010-06-15 Leviton Manufacturing Co., Inc. Circuit interrupting device and system utilizing bridge contact mechanism and reset lockout
US7834560B2 (en) 2007-07-26 2010-11-16 Leviton Manufacturing Co., Inc. Dimming system powered by two current sources and having an operation indicator module
US7804255B2 (en) 2007-07-26 2010-09-28 Leviton Manufacturing Company, Inc. Dimming system powered by two current sources and having an operation indicator module
US8587914B2 (en) 2008-07-07 2013-11-19 Leviton Manufacturing Co., Inc. Fault circuit interrupter device
US8444309B2 (en) 2010-08-13 2013-05-21 Leviton Manufacturing Company, Inc. Wiring device with illumination
US8526144B2 (en) 2011-03-31 2013-09-03 Leviton Manufacturing Company, Inc. Reset lockout with grounded neutral test

Also Published As

Publication number Publication date
GB9516620D0 (en) 1995-10-18
GB2292491A (en) 1996-02-21
GB9416569D0 (en) 1994-10-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20150813