Global patent index - EP 0990294 A1

EP 0990294 A1 2000-04-05 - A DEVICE FOR CURRENT LIMITATION AND PROTECTION AGAINST FAULTS IN A CURRENT

Title (en)

A DEVICE FOR CURRENT LIMITATION AND PROTECTION AGAINST FAULTS IN A CURRENT

Title (de)

VORRICHTUNG ZUR STROMBEGRENZUNG UND SCHUTZ GEGEN FEHLER IN EINEM STROM

Title (fr)

DISPOSITIF DE LIMITATION D'INTENSITE ET DE PROTECTION CONTRE LES ECARTS D'INTENSITE

Publication

EP 0990294 A1 (EN)

Application

EP 98928787 A

Priority

  • SE 9801135 W
  • SE 9702335 A

Abstract (en)

[origin: WO9858435A1] A device for current limitation and protection against faults in the load current fed to an electrical load, in the form of an electrical apparatus or installation, a fault current limiter. The fault current limiter is electrically connected in series with the load to be protected in a main circuit for power supply of the load. The current limiting element is electrically connected to a circuit for current injection. The circuit for current injection comprises a capacitor connected in series with a switch. A control unit with sensors for monitoring the load current in the main circuit and control means are arranged to control and operate the switch in the circuit for current injection based on changes in the properties of the load current in the main circuit, such that upon detection of a fault the capacitor is discharged through the current limiting element.

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

H02H 9/02

IPC 8 full level (invention and additional information)

H02H 1/00 (2006.01); H02H 9/02 (2006.01)

CPC (invention and additional information)

H02H 1/003 (2013.01); H02H 9/02 (2013.01)

Citation (search report)

See references of WO 9858435A1

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 9858435 A1 19981223; EP 0990294 A1 20000405; SE 9702335 D0 19970618

INPADOC legal status

2003-07-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021231

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991201

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE