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1. WO1996003760 - CURRENT IMBALANCE SENSOR

Publication Number WO/1996/003760
Publication Date 08.02.1996
International Application No. PCT/GB1995/001691
International Filing Date 18.07.1995
Chapter 2 Demand Filed 15.02.1996
IPC
H01H 83/14 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
83Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
14operated by unbalance of two or more currents or voltages, e.g. for differential protection
CPC
H01H 2083/146
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
83Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
14operated by unbalance of two or more currents or voltages, e.g. for differential protection
144with differential transformer
146Provisions for avoiding disadvantages of having asymetrical primaries, e.g. induction of a magnetic field even by zero difference current
H01H 2083/148
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
83Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
14operated by unbalance of two or more currents or voltages, e.g. for differential protection
144with differential transformer
148with primary windings formed of rigid copper conductors
H01H 83/144
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
83Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
14operated by unbalance of two or more currents or voltages, e.g. for differential protection
144with differential transformer
Applicants
  • DELTA CIRCUIT PROTECTION & CONTROLS LIMITED [GB/GB]; 1 Kingsway London WC2B 6XF, GB (AllExceptUS)
  • CROSIER, Mark, David [GB/GB]; GB (UsOnly)
Inventors
  • CROSIER, Mark, David; GB
Agents
  • CARPENTER, David ; Marks & Clerk Alpha Tower Suffolk Street Queensway Birmingham B1 1TT, GB
Priority Data
9414873.123.07.1994GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CURRENT IMBALANCE SENSOR
(FR) CAPTEUR DE DESEQUILIBRE DU COURANT
Abstract
(EN)
A current imbalance sensor comprising a toroidal core and output winding assembly (11) and a first electrical conductor (16) in the form of a tubular element of non-magnetic material extending co-axially through the toroidal assembly (11). The conductor (16) is arranged at its ends to be connected in one of two electrical lines to be monitored, the lead constituting the other of the two lines to be monitored extending, in use, coaxially through the tubular element (16).
(FR)
Capteur de déséquilibre du courant comprenant un noyau toroïdal, un ensemble enroulement (11) de puissance ainsi qu'un premier conducteur (16) électrique sous la forme d'un élément tubulaire, réalisé dans un matériau non magnétique, s'étendant coaxialement à travers l'ensemble (11) toroïdal. Ce conducteur (16) possède des extrémités conçues pour être connectées dans une des deux lignes électriques à surveiller, un fil conducteur constituant l'autre des deux lignes à surveiller s'étendant, en cours d'utilisation, coaxialement à travers l'élément (16) tubulaire.
Also published as
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