GB1354301A - Electric circuit breakers - Google Patents

Electric circuit breakers

Info

Publication number
GB1354301A
GB1354301A GB1392471*[A GB1392471A GB1354301A GB 1354301 A GB1354301 A GB 1354301A GB 1392471 A GB1392471 A GB 1392471A GB 1354301 A GB1354301 A GB 1354301A
Authority
GB
United Kingdom
Prior art keywords
circuit
transformer
earth
tripping
breaker
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
Application number
GB1392471*[A
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.)
Rucker Co
Original Assignee
Rucker 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.)
Filing date
Publication date
Application filed by Rucker Co filed Critical Rucker Co
Publication of GB1354301A publication Critical patent/GB1354301A/en
Expired 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

Abstract

1354301 Protective arrangements RUCKER CO 10 May 1971 [11 May 1970] 13924/71 Heading H2K [Also in Division H1] An overcurrent-responsive moulded-case circuit-breaker for use in a "panelboard" is provided with an earth-leakage protective device which comprises a core-balance transformer 46, a static protective circuit 62 and an electromagnetic tripping device 56. The circuitbreaker is of the kind having a tension spring over-centre operating mechanism 18, 38, 23 with a latch member 36. This member is normally latched by the armature 32 of an electromagnetic and bimetallic overcurrent tripping device 27, 28. The earth-leakage tripping device 56 has a rectilinearly movable armature 57 carrying a hook 61 which engages and moves the armature 32 when the coil 58 of the device 56 is energized. A test switch 106 with a resistor (not shown) is provided to unbalance the currents through the transformer 46 to test the operation of the circuit-breaker. A mechanical indicator or a lamp 168 is provided to show when tripping occurs in response to earth leakage, the lamp being supplied from the supply conductors through a full wave rectifier (Fig. 9, not shown), under the control of a silicon-controlled rectifier which may be turned off by a reset switch which may be linked mechanically with the main circuit-breaker contacts. Figs. 7 and 8 (not shown) illustrate a switchboard having the above circuit-breakers mounted by terminals 42 and mounting cams 146 on bus-bars and slotted rail members respectively. The static circuit 62 may be that of either Specification 1,334,169 or Specification 1,352,183. A further circuit, Fig. 10 (not shown), includes a coupling transformer to induce a signal from an oscillator into the conductors to produce tripping should the earthed neutral conductor develop an earth fault on the load side of the core-balance transformer or should the line conductor become shorted to itself on both sides of the corebalance transformer or to an unprotected conductor.
GB1392471*[A 1970-05-11 1971-05-10 Electric circuit breakers Expired GB1354301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3599370A 1970-05-11 1970-05-11

Publications (1)

Publication Number Publication Date
GB1354301A true GB1354301A (en) 1974-06-05

Family

ID=21885973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1392471*[A Expired GB1354301A (en) 1970-05-11 1971-05-10 Electric circuit breakers

Country Status (5)

Country Link
JP (1) JPS466675A (en)
CA (1) CA953013A (en)
FR (1) FR2088489B1 (en)
GB (1) GB1354301A (en)
ZA (1) ZA713072B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285886A (en) * 1994-01-21 1995-07-26 Square D Co Circuit breaker
CN1047464C (en) * 1995-11-01 1999-12-15 日东工业株式会社 Earth leakage breaker

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092547A (en) * 1973-12-21 1975-07-24
JPS5759823Y2 (en) * 1975-08-16 1982-12-21
FR2604294B1 (en) * 1986-09-23 1994-05-20 Merlin Et Gerin MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER WITH MODULAR ASSEMBLY
US5179491A (en) * 1990-07-19 1993-01-12 Square D Company Plug-in circuit breaker
US7287648B2 (en) 2005-09-02 2007-10-30 Tools Aviation, Llc Battery holder and dispenser
JP2008103083A (en) * 2006-10-17 2008-05-01 Fuji Electric Fa Components & Systems Co Ltd Ground fault interrupter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105970B (en) * 1959-10-05 1961-05-04 Busch Jaeger Duerener Metall Residual current circuit breaker for switch and counter panel installation
GB1096613A (en) * 1964-04-10 1967-12-29 M & C Switchgear Ltd Improvements in and relating to an earth leakage control circuit for a three phase electrical supply line
CH415809A (en) * 1966-01-13 1966-06-30 Gardy Particip App Overcurrent and differential action circuit breaker
FR1494850A (en) * 1966-07-25 1967-09-15 Electronique Et Nucleaire Soc Device for monitoring and locating insulation faults in a low-voltage electrical installation
DE1965784U (en) * 1967-03-14 1967-08-10 Stotz Kontakt Gmbh ELECTRIC SOCKET WITH FAULT CURRENT PROTECTION.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285886A (en) * 1994-01-21 1995-07-26 Square D Co Circuit breaker
CN1047464C (en) * 1995-11-01 1999-12-15 日东工业株式会社 Earth leakage breaker

Also Published As

Publication number Publication date
ZA713072B (en) 1972-01-26
CA953013A (en) 1974-08-13
FR2088489B1 (en) 1976-04-16
JPS466675A (en) 1971-12-13
FR2088489A1 (en) 1972-01-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee