EP 2573781 B1 20140326 - High voltage current coil
Title (en)
High voltage current coil
Title (de)
Hochspannungsstromspule
Title (fr)
Bobine à haute tension
Publication
Application
Priority
PL 12030111 U 20110831
Abstract (en)
[origin: EP2573781A1] The invention deals with a high voltage current coil which is an element of a current transformer used in a combined instrument transformer which comprises of a current transformer and a voltage transformer located in a common enclosure. A combined instrument transformer is applicable in high-voltage electric power measuring systems. The current coil according to the invention is distinguished by the fact that it comprises a metal tube (10) which is an element of the current bushing of the current transformer (1), which tube is furnished with a metal protective guard (14) in the shape of a truncated cone whose base with the larger diameter faces a joining sleeve (12), and the edge of the cone base with the smaller diameter is permanently joined with the external surface of the metal tube (10), while the edge of the cone base with the larger diameter is folded inside the cone.
IPC 8 full level
H01F 38/28 (2006.01)
CPC (source: EP)
H01F 27/04 (2013.01); H01F 38/36 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2573781 A1 20130327; EP 2573781 B1 20140326; HR P20140579 T1 20141107; PL 120301 U1 20130304; PL 2573781 T3 20140731; PL 66897 Y1 20131231
DOCDB simple family (application)
EP 12460049 A 20120808; HR P20140579 T 20140620; PL 12030111 U 20110831; PL 12460049 T 20120808