WO2003100797A3 - Method and device for installing and removing a current transformer - Google Patents

Method and device for installing and removing a current transformer Download PDF

Info

Publication number
WO2003100797A3
WO2003100797A3 PCT/IB2003/001798 IB0301798W WO03100797A3 WO 2003100797 A3 WO2003100797 A3 WO 2003100797A3 IB 0301798 W IB0301798 W IB 0301798W WO 03100797 A3 WO03100797 A3 WO 03100797A3
Authority
WO
WIPO (PCT)
Prior art keywords
transformer
winding
current
core
split
Prior art date
Application number
PCT/IB2003/001798
Other languages
French (fr)
Other versions
WO2003100797A2 (en
Inventor
Joseph C Perkinson
Scott D Brown
Original Assignee
Amperion Inc
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 Amperion Inc filed Critical Amperion Inc
Priority to EP03722903A priority Critical patent/EP1508146A2/en
Priority to AU2003230061A priority patent/AU2003230061A1/en
Publication of WO2003100797A2 publication Critical patent/WO2003100797A2/en
Publication of WO2003100797A3 publication Critical patent/WO2003100797A3/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20Instruments transformers
    • H01F38/22Instruments transformers for single phase ac
    • H01F38/28Current transformers
    • H01F38/30Constructions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type 
    • H01F17/04Fixed inductances of the signal type  with magnetic core
    • H01F17/06Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/062Toroidal core with turns of coil around it

Abstract

A current transformer (90) to be installed around a current-carrying conductor (5). The transformer has a split core with two parts (110, 120) which can be opened to allow the transformer to be installed around or removed from the current-carrying conductor. A winding (140) wound on the core is operatively connected to a switch (192) so that the winding can be shorted prior to opening the split core when the transformer is removed from the current-carrying conductor in order to reduce the magnetic force holding the split core parts together. The winding is shorted by the switch prior to closing the split core parts when the transformer is installed around the conductor in order to minimize the damage to the core due to the induced magnetic force thereon. A mechanical tool (194) is used to open or close the split-core parts. The switch can be linked to the tool for shorting and opening the winding.
PCT/IB2003/001798 2002-05-28 2003-05-08 Method and device for installing and removing a current transformer WO2003100797A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03722903A EP1508146A2 (en) 2002-05-28 2003-05-08 Method and device for installing and removing a current transformer on and from a current-carrying power line
AU2003230061A AU2003230061A1 (en) 2002-05-28 2003-05-08 Method and device for installing and removing a current transformer

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US38383302P 2002-05-28 2002-05-28
US60/383,833 2002-05-28
US10/293,729 US6756776B2 (en) 2002-05-28 2002-11-12 Method and device for installing and removing a current transformer on and from a current-carrying power line
US10/293,729 2002-11-12

Publications (2)

Publication Number Publication Date
WO2003100797A2 WO2003100797A2 (en) 2003-12-04
WO2003100797A3 true WO2003100797A3 (en) 2004-03-04

Family

ID=29586507

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/001798 WO2003100797A2 (en) 2002-05-28 2003-05-08 Method and device for installing and removing a current transformer

Country Status (4)

Country Link
US (1) US6756776B2 (en)
EP (1) EP1508146A2 (en)
AU (1) AU2003230061A1 (en)
WO (1) WO2003100797A2 (en)

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Also Published As

Publication number Publication date
WO2003100797A2 (en) 2003-12-04
US6756776B2 (en) 2004-06-29
AU2003230061A8 (en) 2003-12-12
AU2003230061A1 (en) 2003-12-12
EP1508146A2 (en) 2005-02-23
US20030222747A1 (en) 2003-12-04

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