JPS4712829A - - Google Patents

Info

Publication number
JPS4712829A
JPS4712829A JP10359071A JP10359071A JPS4712829A JP S4712829 A JPS4712829 A JP S4712829A JP 10359071 A JP10359071 A JP 10359071A JP 10359071 A JP10359071 A JP 10359071A JP S4712829 A JPS4712829 A JP S4712829A
Authority
JP
Japan
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.)
Pending
Application number
JP10359071A
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
Priority claimed from DE19702044302 external-priority patent/DE2044302B2/de
Application filed filed Critical
Publication of JPS4712829A publication Critical patent/JPS4712829A/ja
Pending 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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance 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 unbalance 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
    • H02H3/26—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
    • H02H3/332—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 responsive to dc component in the fault current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
JP10359071A 1970-09-08 1971-12-20 Pending JPS4712829A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702044302 DE2044302B2 (de) 1970-09-08 1970-09-08 Fehlerstromschutzschalter
DE2062694A DE2062694B2 (de) 1970-09-08 1970-12-19 Fehlerstromschutzschalter

Publications (1)

Publication Number Publication Date
JPS4712829A true JPS4712829A (ja) 1972-06-28

Family

ID=25759694

Family Applications (2)

Application Number Title Priority Date Filing Date
JP6962271A Pending JPS476429A (ja) 1970-09-08 1971-09-08
JP10359071A Pending JPS4712829A (ja) 1970-09-08 1971-12-20

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP6962271A Pending JPS476429A (ja) 1970-09-08 1971-09-08

Country Status (8)

Country Link
JP (2) JPS476429A (ja)
AT (1) AT315949B (ja)
BE (1) BE847794Q (ja)
CH (1) CH538773A (ja)
DE (1) DE2062694B2 (ja)
DK (1) DK142664C (ja)
FR (1) FR2106374B1 (ja)
GB (1) GB1369817A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622846A (en) * 1985-11-05 1986-11-18 Halliburton Company Consistency and static gel strength measuring device and method

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU78600A1 (de) * 1977-11-28 1979-06-13 Gath N Fehlerstromschutzschalter
US4366520A (en) * 1981-03-25 1982-12-28 Magnetic Metals Corporation Differential transformer core for pulse currents
FR2520164A1 (fr) * 1982-01-19 1983-07-22 Merlin Gerin Dispositif de declenchement differentiel a propre courant
DE3202320A1 (de) * 1982-01-26 1983-07-28 Siemens AG, 1000 Berlin und 8000 München Fehlerstromschutzschalter, der auf fehlerstroeme mit gleichstromkomponenten anspricht
DE3244670A1 (de) * 1982-12-02 1984-06-07 Siemens AG, 1000 Berlin und 8000 München Fehlerstromschutzschalter
FR2653610B1 (fr) * 1989-10-25 1991-12-27 Etude Realisa Disjoncteurs Interrupteur differentiel selectif a courant de defaut.
DE19907320C2 (de) * 1999-02-20 2001-03-08 Aloys Wobben Ringkern und dessen Verwendung
FR2993058B1 (fr) * 2012-07-05 2014-08-08 Hager Electro Sas Dispositif de protection differentiel.
KR102539688B1 (ko) 2016-04-28 2023-06-07 엘에스일렉트릭(주) 누전 차단기
CN107658092B (zh) * 2016-07-25 2020-06-05 施耐德电气工业公司 铁氧体磁芯、电流互感器以及漏电保护开关
JPWO2020095555A1 (ja) * 2018-11-08 2021-09-24 Tdk株式会社 電磁誘導型発電装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622846A (en) * 1985-11-05 1986-11-18 Halliburton Company Consistency and static gel strength measuring device and method

Also Published As

Publication number Publication date
AT315949B (de) 1974-06-25
FR2106374A1 (ja) 1972-05-05
DK142664B (da) 1980-12-08
BE847794Q (fr) 1977-02-14
DE2062694A1 (de) 1972-06-29
DK142664C (da) 1981-09-14
FR2106374B1 (ja) 1976-04-30
JPS476429A (ja) 1972-04-10
CH538773A (de) 1973-06-30
DE2062694B2 (de) 1975-05-28
GB1369817A (en) 1974-10-09

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