EP 0074297 B1 19851121 - HYBRID COMPENSATED CURRENT TRANSFORMER
Title (en)
HYBRID COMPENSATED CURRENT TRANSFORMER
Publication
Application
Priority
FR 8116416 A 19810826
Abstract (en)
[origin: EP0074297A1] 1. Current sensor (10) for electronically measuring and/or protective equipment intended to control the current in a line (14) of an electrical energy supply system, said inductive sensor coupled with the line and comprising : - a magnetic circuit or core CM enclosing the line (14) and equipped with at least one amagnetic air-gap (12, 12a, 12b) of predetermined length e, said circuit having a reluctance Re, - a secondary winding (16, 16a, 16b) wound about the magnetic circuit CM and having a number of winding turns n and an ohmic resistance R1 , - a load resistance connected electrically to the output terminals of the secondary winding and having an ohmic resistance R2 , characterized in that the inductive sensor (10) is of hybrid type of which the secondary time constant t2 is defined by the relation n**2 /Re(R1 + R2 ) having a value comprised between 10 microseconds and 100 milliseconds.
IPC 1-7
IPC 8 full level
G01R 15/18 (2006.01); G01R 15/20 (2006.01); H01F 38/32 (2006.01)
CPC (source: EP)
H01F 38/32 (2013.01); H01F 2038/305 (2013.01)
Designated contracting state (EPC)
BE CH DE GB IT LI NL SE
DOCDB simple family (publication)
FR 2512264 A1 19830304; FR 2512264 B1 19831028; CA 1203284 A 19860415; DE 3267597 D1 19860102; EP 0074297 A1 19830316; EP 0074297 B1 19851121; EP 0074297 B2 19881207; JP H0447271 B2 19920803; JP S5895266 A 19830606
DOCDB simple family (application)
FR 8116416 A 19810826; CA 409402 A 19820813; DE 3267597 T 19820813; EP 82401529 A 19820813; JP 14632482 A 19820825