ES261758A1 - Ground responsive protective system - Google Patents

Ground responsive protective system

Info

Publication number
ES261758A1
ES261758A1 ES0261758A ES261758A ES261758A1 ES 261758 A1 ES261758 A1 ES 261758A1 ES 0261758 A ES0261758 A ES 0261758A ES 261758 A ES261758 A ES 261758A ES 261758 A1 ES261758 A1 ES 261758A1
Authority
ES
Spain
Prior art keywords
leakage current
human body
current
relay
earth leakage
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
ES0261758A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES261758A1 publication Critical patent/ES261758A1/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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/167—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 fault current to earth, frame or mass combined with other earth-fault protective arrangements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Safety switch for protection against electric leakage currents, of the type equipped with a disconnection relay powered by the secondary of a transformer provided with primary windings that generate flows that are vector-summed and are traveled by phase and neutral currents, creating for the maximum current allowed for a direct earth leakage current through the human body a sufficient flow to disconnect the relay, characterized in that, in order to allow a normal leakage current through the ground line, of intensity greater than the direct earth leakage current through the human body, the relay power transformer has a supplementary primary winding mounted in series on the grounding line, such supplementary primary winding having a different number of turns than the of the primary phase and neutral windings, so that it is believed in the transformed r, for the maximum tolerated value for the earth current, the same flow as for the maximum value of the direct earth leakage current through the human body. (Machine-translation by Google Translate, not legally binding)
ES0261758A 1959-10-02 1960-09-29 Ground responsive protective system Expired ES261758A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR806618A FR1246800A (en) 1959-10-02 1959-10-02 Safety switch for protection against electric leakage currents

Publications (1)

Publication Number Publication Date
ES261758A1 true ES261758A1 (en) 1960-12-16

Family

ID=8719765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0261758A Expired ES261758A1 (en) 1959-10-02 1960-09-29 Ground responsive protective system

Country Status (8)

Country Link
US (1) US3214638A (en)
BE (1) BE595274A (en)
CH (1) CH366588A (en)
DE (1) DE1140634B (en)
ES (1) ES261758A1 (en)
FR (1) FR1246800A (en)
GB (1) GB962658A (en)
NL (2) NL110540C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280375A (en) * 1963-01-17 1966-10-18 Ite Circuit Breaker Ltd Tripping device
AT258340B (en) * 1963-05-31 1967-11-27 Benno Palatini Device for electrical heating of extensive coverings
AT251631B (en) * 1963-09-16 1967-01-10 Herbert Dipl Ing Pferschy Device for heating floor surfaces
US3376477A (en) * 1965-12-06 1968-04-02 Hubbell Inc Harvey Protective circuit
US3374398A (en) * 1966-01-07 1968-03-19 Sanders Associates Inc Magnetic circuit protective device
AT259054B (en) * 1966-01-25 1967-12-27 Uninorm Anstalt Residual current circuit breaker with additional overcurrent release
US3407337A (en) * 1966-11-15 1968-10-22 Purex Corp Ltd Leak detector for swimming pool lights and the like
US3473091A (en) * 1967-04-14 1969-10-14 Hubbell Inc Harvey Ground leakage differential protective apparatus
US3506906A (en) * 1967-12-18 1970-04-14 Rucker Co Ground fault circuit interrupter with inadvertent ground sensor
US3753205A (en) * 1971-06-07 1973-08-14 Wiggins Inc E Coupler device for tubing ends providing mechanical and electrical connections therewith
US3864581A (en) * 1973-01-22 1975-02-04 Varahur Srinivas Satyanarayana Shock prevention device
FR2444359A1 (en) * 1978-12-12 1980-07-11 Barthelemy Louis Power equipment circuit for electrocution protection - overcomes sensitivity problems by measuring imbalance between abnormal earth leakage currents, power input and power output currents
DE2912196C2 (en) * 1979-03-28 1981-10-08 Lueder, Holger, Dr. phil., 8990 Lindau Device for homogeneous radiation air conditioning of a room enclosed on all sides, in particular a tepidarium
FR2454198A2 (en) * 1979-04-09 1980-11-07 Osmond Max Enhanced sensitivity earth leakage cut=out - has toroidal transformer with differential line and neutral windings
US4707759A (en) * 1985-02-27 1987-11-17 Bodkin Lawrence E Universal fault circuit interrupter
CN101573770A (en) * 2006-05-12 2009-11-04 大人工河改造建造公司 Description electro-ageeb electrical safety device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1667655A (en) * 1924-10-03 1928-04-24 Reyrolle A & Co Ltd Controlling or tripping apparatus for alternating-current electric circuits
US1776130A (en) * 1927-10-19 1930-09-16 Gen Electric Protection of electric circuits
GB350751A (en) * 1930-07-01 1931-06-18 Paul Berger Improvements in protective cut-out devices for electrical installations
GB429503A (en) * 1933-11-23 1935-05-23 Reyrolle A & Co Ltd Improvements in or relating to earthing arrangements for electric apparatus
FR900437A (en) * 1942-11-20 1945-06-28 Hermes Patentverwertungs Gmbh Contact protection for electrical devices
GB648207A (en) * 1948-12-16 1951-01-03 British Insulated Callenders Improvements in protective devices for electric circuits
DE1053639B (en) * 1956-08-13 1959-03-26 August Stuke Circuit arrangement for the protection of electrical systems

Also Published As

Publication number Publication date
NL110540C (en)
US3214638A (en) 1965-10-26
FR1246800A (en) 1960-11-25
GB962658A (en) 1964-07-01
DE1140634B (en) 1962-12-06
BE595274A (en) 1961-01-16
CH366588A (en) 1963-01-15
NL256426A (en)

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