Global Patent Index - EP 1321951 A1

EP 1321951 A1 2003-06-25 - Compact measurement apparatus for the protection of medium-voltage line

Title (en)

Compact measurement apparatus for the protection of medium-voltage line

Title (de)

Kompakte Messvorrichtung zum Schutz eines Mittelspannungsleiters

Title (fr)

Appareil de mesure compact pour la protection d'une ligne à moyenne tension

Publication

EP 1321951 A1 (EN)

Application

EP 02080450 A

Priority

IT MI20012788 A

Abstract (en)

A compact apparatus (16) for detecting current, which travels in medium-voltage insulated cables (23), comprising a single epoxy resin block (20) comprising a series of toroidal windings (40, 44, 47) combined with a further winding (39) for collection of the phases; the apparatus (16) takes samples of current from the medium-voltage cables (23) connected to a bar switch and disconnecting switch (22), guaranteeing maximum reliability in the picking up and sending of signals to protection relays (26) for short-circuits, overloads and unbalancing between the phases, as well as the reading and detection of the phase and grounding currents, in order to measure all of the functionalities and malfunctions of the electrical line. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01F 38/38; H01F 38/30; H01H 71/24; H02H 1/04

IPC 8 full level (invention and additional information)

H01F 38/30 (2006.01); H01F 38/38 (2006.01); H01H 33/02 (2006.01)

CPC (invention and additional information)

H01F 38/38 (2013.01); H01F 38/30 (2013.01); H01H 33/027 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

DOCDB simple family

EP 1321951 A1 20030625; IT MI20012788 A1 20030623