GB1361228A - Electric shock protective device - Google Patents

Electric shock protective device

Info

Publication number
GB1361228A
GB1361228A GB3153771A GB3153771A GB1361228A GB 1361228 A GB1361228 A GB 1361228A GB 3153771 A GB3153771 A GB 3153771A GB 3153771 A GB3153771 A GB 3153771A GB 1361228 A GB1361228 A GB 1361228A
Authority
GB
United Kingdom
Prior art keywords
circuit
casing
unit
breaker
electronic switch
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
GB3153771A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB1361228A publication Critical patent/GB1361228A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)

Abstract

1361228 Protective arrangements GENERAL ELECTRIC CO 6 July 1971 [3 Aug 1970] 31537/71 Heading H2K [Also in Division H1] A circuit-breaker arrangement (see Division H1), comprises a rectangular insulating casing, a circuit interrupter in the casing, an electrically operable device 55 for causing the opening of the interrupter and means, preferably an electronic switch, for energizing the device 55 in response to an unbalance signal from a differential transformer 60. The arrangement is formed by an assembly of a plug-in circuit breaker unit having a casing 37, contacts 52A, 52B and a thermal and magnetic overcurrent responsive means 53, a unit having a casing 38 containing the device 55, a test switch 57 and a resistor 58, and a unit having an L-shaped casing containing the electronic switch and the transformer 60. The three casings are riveted together to form the rectangular casing which when mounted in a panel board occupies the spaces provided for three circuit-breaker units. A further circuit-breaker unit may be added to form a double-pole arrangement which may be used to control the supply to a plurality of circuit-breakers, Fig. 6 (not shown). The electronic switch may be that on pages 166-167 of the Silicon Controlled Rectifier Manual, 4th edition, General Electric Company 1967, and comprise a silicon controlled rectifier with a unijunction transistor trigger circuit.
GB3153771A 1970-08-03 1971-07-06 Electric shock protective device Expired GB1361228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6058470A 1970-08-03 1970-08-03

Publications (1)

Publication Number Publication Date
GB1361228A true GB1361228A (en) 1974-07-24

Family

ID=22030431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3153771A Expired GB1361228A (en) 1970-08-03 1971-07-06 Electric shock protective device

Country Status (5)

Country Link
JP (1) JPS474226A (en)
DE (1) DE2138804A1 (en)
FR (1) FR2101208B1 (en)
GB (1) GB1361228A (en)
NL (1) NL7110351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247568A (en) * 1990-08-30 1992-03-04 Mk Electric Ltd Circuitbreaker electrical control apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184278A (en) * 1990-11-28 1993-02-02 Square D Company Lighting control and emergy management system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065517B (en) * 1959-09-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247568A (en) * 1990-08-30 1992-03-04 Mk Electric Ltd Circuitbreaker electrical control apparatus

Also Published As

Publication number Publication date
FR2101208A1 (en) 1972-03-31
JPS474226A (en) 1972-03-01
NL7110351A (en) 1972-02-07
FR2101208B1 (en) 1974-09-06
DE2138804A1 (en) 1972-02-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees