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EP1696444A3 - Summation current transformer - Google Patents

Summation current transformer Download PDF

Info

Publication number
EP1696444A3
EP1696444A3 EP06101331A EP06101331A EP1696444A3 EP 1696444 A3 EP1696444 A3 EP 1696444A3 EP 06101331 A EP06101331 A EP 06101331A EP 06101331 A EP06101331 A EP 06101331A EP 1696444 A3 EP1696444 A3 EP 1696444A3
Authority
EP
European Patent Office
Prior art keywords
current transformer
summation current
passage opening
magnetic cores
primary
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.)
Granted
Application number
EP06101331A
Other languages
German (de)
French (fr)
Other versions
EP1696444B1 (en
EP1696444A2 (en
Inventor
Jürgen Bross
Bernhard Schmid
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1696444A2 publication Critical patent/EP1696444A2/en
Publication of EP1696444A3 publication Critical patent/EP1696444A3/en
Application granted granted Critical
Publication of EP1696444B1 publication Critical patent/EP1696444B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01F38/38—Instruments transformers for polyphase ac
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • 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
    • H01F38/30—Constructions
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/288—Shielding
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

The transformer has a passage opening which continues in a direction of a center axis and is designed for receiving a primary conductor that is monitored with respect to a residual current. Magnetic cores (2, 3) surrounding the passage opening are wound with primary and secondary windings (6, 7), respectively. Magnetic shields (10, 11) are arranged between a compartmentalization (20) and the magnetic cores.
EP06101331A 2005-02-17 2006-02-06 Summation current transformer Not-in-force EP1696444B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005007334A DE102005007334B4 (en) 2005-02-17 2005-02-17 Summation current transformer for the universal current-sensitive detection of an electrical differential current

Publications (3)

Publication Number Publication Date
EP1696444A2 EP1696444A2 (en) 2006-08-30
EP1696444A3 true EP1696444A3 (en) 2009-07-01
EP1696444B1 EP1696444B1 (en) 2011-10-05

Family

ID=36675886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06101331A Not-in-force EP1696444B1 (en) 2005-02-17 2006-02-06 Summation current transformer

Country Status (3)

Country Link
EP (1) EP1696444B1 (en)
AT (1) ATE527672T1 (en)
DE (1) DE102005007334B4 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075456B4 (en) 2011-05-06 2015-06-25 Siemens Aktiengesellschaft Summation current transformer and residual current circuit breaker
DE102012201002B4 (en) 2012-01-24 2022-10-06 Siemens Aktiengesellschaft Summation current transformer housing, summation current transformer and residual current circuit breaker
DE102012203337B4 (en) 2012-03-02 2020-04-23 Siemens Aktiengesellschaft Total current transformer and electrical protection switching device
WO2014104982A1 (en) 2012-12-24 2014-07-03 Razvojni Center Enem Novi Materiali D.O.O. Electronic device for residual current circuit breakers of type b and its derivative
EP2940702A1 (en) * 2014-04-16 2015-11-04 Bender GmbH & Co. KG Differential current measuring module
EP3979448A1 (en) * 2015-10-14 2022-04-06 SolarEdge Technologies Ltd. Fault detection system and circuits
DE102016225879A1 (en) * 2016-12-21 2018-06-21 Siemens Aktiengesellschaft Universal current-sensitive summation current transformer, electromechanical protective switching device and manufacturing process
DE102020116428A1 (en) * 2020-06-22 2021-12-23 Magnetec Gmbh Sensor, circuit breaker, charging cable and charging station
DE102023102605A1 (en) 2023-02-02 2024-08-08 Magnetec Gmbh Sensor, sensor arrangement, circuit breaker, process, charging cable and charging station

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543985A1 (en) * 1985-12-12 1987-06-19 Siemens Ag Arrangement for detecting fault currents
DE4106034A1 (en) * 1991-02-22 1992-08-27 Siemens Ag POWER CONVERTER
EP0531554A1 (en) * 1991-09-06 1993-03-17 Siemens Aktiengesellschaft Transformer, for instance symmation transformer
EP0603857A1 (en) * 1992-12-24 1994-06-29 Kommanditgesellschaft Ritz Messwandler GmbH & Co. Ring core transformer with parasitic voltage shielding
EP0959484A2 (en) * 1998-05-19 1999-11-24 Siemens Aktiengesellschaft Shielding for differential transformer assembly for earth fault circuit breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT363549B (en) * 1980-01-18 1981-08-10 Felten & Guilleaume Ag Oester Fault current protection switch with summation current transformer
DE4036275A1 (en) * 1990-11-14 1992-05-21 Zumtobel Ag RING SHAPED BOBBIN FOR SMALL AND SAFETY TRANSFORMERS AND METHOD FOR THE PRODUCTION THEREOF
DE4111236C2 (en) * 1991-04-08 1999-04-08 Abb Patent Gmbh Total current transformer for a residual current circuit breaker
DE19944043A1 (en) * 1999-09-14 2001-03-15 Siemens Ag Fault current protection device
ATE550819T1 (en) * 2001-06-12 2012-04-15 Doepke Schaltgeraete Gmbh DEVICE FOR DETECTING ELECTRICAL DIFFERENTIAL CURRENTS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543985A1 (en) * 1985-12-12 1987-06-19 Siemens Ag Arrangement for detecting fault currents
DE4106034A1 (en) * 1991-02-22 1992-08-27 Siemens Ag POWER CONVERTER
EP0531554A1 (en) * 1991-09-06 1993-03-17 Siemens Aktiengesellschaft Transformer, for instance symmation transformer
EP0603857A1 (en) * 1992-12-24 1994-06-29 Kommanditgesellschaft Ritz Messwandler GmbH & Co. Ring core transformer with parasitic voltage shielding
EP0959484A2 (en) * 1998-05-19 1999-11-24 Siemens Aktiengesellschaft Shielding for differential transformer assembly for earth fault circuit breaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOLLEDER R: "ALLSTROMSENSITIVE FEHLERSTROM-SCHUTZEINRICHTUNG FUER INDUSTRIEANWENDUNG", ELEKTROTECHNISCHE ZEITSCHRIFT - ETZ, VDE VERLAG GMBH, BERLIN, DE, vol. 115, no. 16, 1 August 1994 (1994-08-01), pages 896 - 898,900/9, XP000471380, ISSN: 0948-7387 *

Also Published As

Publication number Publication date
DE102005007334A1 (en) 2006-09-07
DE102005007334B4 (en) 2007-02-08
EP1696444B1 (en) 2011-10-05
EP1696444A2 (en) 2006-08-30
ATE527672T1 (en) 2011-10-15

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