DK0618451T3 - Power transformers, especially for an electronic electricity meter - Google Patents

Power transformers, especially for an electronic electricity meter

Info

Publication number
DK0618451T3
DK0618451T3 DK93103524.0T DK93103524T DK0618451T3 DK 0618451 T3 DK0618451 T3 DK 0618451T3 DK 93103524 T DK93103524 T DK 93103524T DK 0618451 T3 DK0618451 T3 DK 0618451T3
Authority
DK
Denmark
Prior art keywords
plane
conductor
conductor loop
electricity meter
electronic electricity
Prior art date
Application number
DK93103524.0T
Other languages
Danish (da)
Inventor
Frank Dipl-Ing Herrmann
Otto Dipl-Ing Raetsch
Original Assignee
Deutsche Zaehler Gmbh
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 Deutsche Zaehler Gmbh filed Critical Deutsche Zaehler Gmbh
Application granted granted Critical
Publication of DK0618451T3 publication Critical patent/DK0618451T3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details
    • G01R11/06—Magnetic circuits of induction meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Organic Insulating Materials (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Control Of Charge By Means Of Generators (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

A current transformer (10) having a conductor which forms an approximately U-shaped conductor loop (11) lying approximately in a plane and flowed through by the current to be measured, inside which conductor a coil (13) which can be connected to an electronic electricity meter is arranged, the windings of which lie parallel to the plane of the conductor loop (11), the conductor loop (11) and the coil (13) being enclosed by a cover made of a magnetically conducting material which also acts as screening. Easily producible construction and high long-term stability in operation are achieved if, according to the invention, the soft magnetic cover is made by at least one flat lamellar element (14) whose plane extends approximately perpendicularly to the plane of the conductor loop (11). <IMAGE>
DK93103524.0T 1993-03-05 1993-03-05 Power transformers, especially for an electronic electricity meter DK0618451T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93103524A EP0618451B1 (en) 1993-03-05 1993-03-05 Current transducer particularly for an electronic electricity meter

Publications (1)

Publication Number Publication Date
DK0618451T3 true DK0618451T3 (en) 1996-06-03

Family

ID=8212665

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93103524.0T DK0618451T3 (en) 1993-03-05 1993-03-05 Power transformers, especially for an electronic electricity meter

Country Status (10)

Country Link
EP (1) EP0618451B1 (en)
AT (1) ATE134449T1 (en)
AU (1) AU6425194A (en)
DE (1) DE59301685D1 (en)
DK (1) DK0618451T3 (en)
ES (1) ES2085667T3 (en)
FI (1) FI954140A (en)
GR (1) GR3019277T3 (en)
NO (1) NO953331L (en)
WO (1) WO1994020860A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19549181A1 (en) * 1995-12-30 1997-07-03 Bosch Gmbh Robert Appliance for measuring the current in conductor
EP0886147B1 (en) * 1997-05-21 2008-09-17 Landis+Gyr AG Device for obtaining a current-proportional magnetic induction at the position of a magnetic field sensor
FR2800167B1 (en) * 1999-10-25 2001-11-30 Schlumberger Ind Sa DEVICE FOR MEASURING AN ELECTRIC CURRENT AND ELECTRICITY METER COMPRISING SUCH A DEVICE
FR2803914B1 (en) * 2000-01-19 2002-05-17 Sagem INDUCTIVE SENSOR FOR AC MEASUREMENT
JP5820164B2 (en) * 2011-07-01 2015-11-24 東光東芝メーターシステムズ株式会社 Current detection device and watt-hour meter using the same
CN114200189A (en) * 2021-12-10 2022-03-18 宁波泰丰源电气有限公司 High-protection ammeter current transformer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE507820C (en) * 1930-09-20 Koch & Sterzel Akt Ges Bushing current transformer
FR2291591A1 (en) * 1974-02-25 1976-06-11 Metalimphy Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows
US4591942A (en) * 1984-12-07 1986-05-27 General Electric Company Current sensing transformer assembly
CH673160A5 (en) * 1986-02-10 1990-02-15 Landis & Gyr Ag
EP0481104A1 (en) * 1990-10-15 1992-04-22 Siemens Aktiengesellschaft Transducer for electricity meter

Also Published As

Publication number Publication date
EP0618451A1 (en) 1994-10-05
DE59301685D1 (en) 1996-03-28
FI954140A0 (en) 1995-09-04
NO953331L (en) 1995-10-20
EP0618451B1 (en) 1996-02-21
GR3019277T3 (en) 1996-06-30
WO1994020860A1 (en) 1994-09-15
NO953331D0 (en) 1995-08-24
AU6425194A (en) 1994-09-26
FI954140A (en) 1995-09-04
ES2085667T3 (en) 1996-06-01
ATE134449T1 (en) 1996-03-15

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