DE59307337D1 - Toroidal converter with interference voltage protection - Google Patents

Toroidal converter with interference voltage protection

Info

Publication number
DE59307337D1
DE59307337D1 DE59307337T DE59307337T DE59307337D1 DE 59307337 D1 DE59307337 D1 DE 59307337D1 DE 59307337 T DE59307337 T DE 59307337T DE 59307337 T DE59307337 T DE 59307337T DE 59307337 D1 DE59307337 D1 DE 59307337D1
Authority
DE
Germany
Prior art keywords
winding
core
toroidal
shielding
metal
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
DE59307337T
Other languages
German (de)
Inventor
Ingmar Dr Grambow
Holger Dr Ing Daeumling
Hans Elsner
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.)
RITZ MESSWANDLER KG
Original Assignee
RITZ MESSWANDLER KG
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 RITZ MESSWANDLER KG filed Critical RITZ MESSWANDLER KG
Application granted granted Critical
Publication of DE59307337D1 publication Critical 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>
DE59307337T 1992-12-24 1993-12-22 Toroidal converter with interference voltage protection Expired - Lifetime DE59307337D1 (en)

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
DE59307337D1 true DE59307337D1 (en) 1997-10-16

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 Before (1)

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

Country Status (3)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4344183A1 (en) * 1993-12-23 1995-06-29 Ant Nachrichtentech High voltage transformer and use
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
DE102005007334B4 (en) * 2005-02-17 2007-02-08 Siemens Ag Summation current transformer for the universal current-sensitive detection of an electrical differential current
EP1693943A3 (en) * 2005-02-17 2015-10-28 Siemens Aktiengesellschaft Device for the AC/DC sensitive detection of differential currents
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

Also Published As

Publication number Publication date
DE9217807U1 (en) 1993-04-08
EP0603857B1 (en) 1997-09-10
EP0603857A1 (en) 1994-06-29
ATE158103T1 (en) 1997-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition