Title:
METHOD AND DEVICE FOR INSTALLING AND REMOVING A CURRENT TRANSFORMER
Document Type and Number:
WIPO Patent Application WO2003100797
Kind Code:
A3
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.
Inventors:
PERKINSON JOSEPH C
BROWN SCOTT D
BROWN SCOTT D
Application Number:
PCT/IB2003/001798
Publication Date:
March 04, 2004
Filing Date:
May 08, 2003
Export Citation:
Assignee:
AMPERION INC (US)
International Classes:
H01F38/30; H01F17/06; (IPC1-7): H01F27/28; H01F27/30; H01F27/02
Foreign References:
| US4559496A | 1985-12-17 | |||
| US5793196A | 1998-08-11 | |||
| US4263549A | 1981-04-21 | |||
| US4390813A | 1983-06-28 | |||
| US4707619A | 1987-11-17 | |||
| US6426632B1 | 2002-07-30 | |||
| US4378525A | 1983-03-29 | |||
| US4309655A | 1982-01-05 |
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