DE9217807U1 - - Google Patents

Info

Publication number
DE9217807U1
DE9217807U1 DE9217807U DE9217807U DE9217807U1 DE 9217807 U1 DE9217807 U1 DE 9217807U1 DE 9217807 U DE9217807 U DE 9217807U DE 9217807 U DE9217807 U DE 9217807U DE 9217807 U1 DE9217807 U1 DE 9217807U1
Authority
DE
Germany
Prior art keywords
winding
core
shielding
metal
surrounds
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 - Lifetime
Application number
DE9217807U
Other languages
German (de)
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
Priority to DE9217807U priority Critical patent/DE9217807U1/de
Publication of DE9217807U1 publication Critical patent/DE9217807U1/de
Priority to EP93120690A priority patent/EP0603857B1/en
Priority to AT93120690T priority patent/ATE158103T1/en
Priority to DE59307337T priority patent/DE59307337D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • 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
    • 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
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive 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
    • H01F2038/305—Constructions with toroidal magnetic core

Abstract

The invention relates to a toroidal-core (annular-core) current transformer for mounting in an earthed metal enclosure which surrounds a high-voltage conductor, having at least one toroidal core which has a winding using the feed wires passing through the metal enclosure and a metal shielding which surrounds the winding. In order to prevent interference voltages in the measurement signal, the metal shielding is designed with low resistance and low inductance. The metal shielding is formed by a conducting layer, in particular foil or fabric which has an insulating gap in order to prevent short-circuit winding. A shielding in the form of a strip winding changes the winding direction after each turn. <IMAGE>
DE9217807U 1992-12-24 1992-12-24 Expired - Lifetime DE9217807U1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE9217807U DE9217807U1 (en) 1992-12-24 1992-12-24
EP93120690A EP0603857B1 (en) 1992-12-24 1993-12-22 Ring core transformer with parasitic voltage shielding
AT93120690T ATE158103T1 (en) 1992-12-24 1993-12-22 TORROW CORE CONVERTER WITH INTERFERENCE VOLTAGE PROTECTION
DE59307337T DE59307337D1 (en) 1992-12-24 1993-12-22 Toroidal converter with interference voltage protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9217807U DE9217807U1 (en) 1992-12-24 1992-12-24

Publications (1)

Publication Number Publication Date
DE9217807U1 true DE9217807U1 (en) 1993-04-08

Family

ID=6887663

Family Applications (2)

Application Number Title Priority Date Filing Date
DE9217807U Expired - Lifetime DE9217807U1 (en) 1992-12-24 1992-12-24
DE59307337T Expired - Lifetime DE59307337D1 (en) 1992-12-24 1993-12-22 Toroidal converter with interference voltage protection

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59307337T Expired - Lifetime DE59307337D1 (en) 1992-12-24 1993-12-22 Toroidal converter with interference voltage protection

Country Status (3)

Country Link
EP (1) EP0603857B1 (en)
AT (1) ATE158103T1 (en)
DE (2) DE9217807U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660344A1 (en) * 1993-12-23 1995-06-28 Robert Bosch Gmbh High-voltage transformer and use

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59712933D1 (en) * 1996-08-23 2008-05-15 Abb Schweiz Ag Measuring device for a metal-enclosed, gas-insulated high-voltage system
EP0825448A3 (en) * 1996-08-23 1999-12-29 Asea Brown Boveri AG Measuring device for a metal-encapsulated gas-insulated high voltage installation
EP1693943A3 (en) * 2005-02-17 2015-10-28 Siemens Aktiengesellschaft Device for the AC/DC sensitive detection of differential currents
DE102005007334B4 (en) * 2005-02-17 2007-02-08 Siemens Ag Summation current transformer for the universal current-sensitive detection of an electrical differential current
CN114050041A (en) * 2021-11-17 2022-02-15 许昌许继软件技术有限公司 High-voltage bushing integrated with low-power-consumption current transformer coil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660262A5 (en) * 1982-12-10 1987-03-31 Bbc Brown Boveri & Cie POWER CONVERTER.
CH662215A5 (en) * 1983-09-08 1987-09-15 Sprecher Energie Ag METAL-ENCLOSED, GAS-INSULATED SWITCHGEAR.
FR2564594B1 (en) * 1984-05-21 1986-09-12 Merlin Gerin CURRENT SENSOR WITH AMAGNETIC CORE
DE4106034A1 (en) * 1991-02-22 1992-08-27 Siemens Ag POWER CONVERTER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660344A1 (en) * 1993-12-23 1995-06-28 Robert Bosch Gmbh High-voltage transformer and use

Also Published As

Publication number Publication date
DE59307337D1 (en) 1997-10-16
EP0603857A1 (en) 1994-06-29
ATE158103T1 (en) 1997-09-15
EP0603857B1 (en) 1997-09-10

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