Global Patent Index - EP 1058853 A1

EP 1058853 A1 2000-12-13 - DEVICE FOR MEASURING A CURRENT BY MEANS OF A FIBRE-OPTIC SAGNAC INTERFEROMETER

Title (en)

DEVICE FOR MEASURING A CURRENT BY MEANS OF A FIBRE-OPTIC SAGNAC INTERFEROMETER

Title (de)

EINRICHTUNG ZUR STROMMESSUNG MITTELS EINES FASEROPTISCHEN SAGNAC-INTERFEROMETERS

Title (fr)

DISPOSITIF DE MESURE DE COURANT AU MOYEN D'UN INTERFEROMETRE SAGNAC A FIBRES OPTIQUES

Publication

EP 1058853 A1 (DE)

Application

EP 99904822 A

Priority

  • DE 19808517 A
  • EP 9900549 W

Abstract (en)

[origin: DE19808517A1] The invention aims to allow the accurate, non-contacting, preferably digital measurement of strong currents, especially in high-voltage distributors and networks. To this end a fibre-optic gyroscope with a closed control loop is used, in which a current measuring coil (7) at least partly replaces the actual sensor coil (6). The measurement principle is based on the Faraday effect. The current measuring device can be used without difficulty for measuring the current in the above kind of supply installation.

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

G01R 15/24; G01C 19/72

IPC 8 full level (invention and additional information)

G01C 19/72 (2006.01); G01R 15/24 (2006.01)

CPC (invention and additional information)

G01C 19/72 (2013.01); G01R 15/246 (2013.01)

Citation (search report)

See references of WO 9944070A1

Designated contracting state (EPC)

CH DE FR GB IT LI SE

EPO simple patent family

DE 19808517 A1 19990916; EP 1058853 A1 20001213; WO 9944070 A1 19990902

INPADOC legal status


2002-01-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010706

2001-04-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010214

2000-12-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000808

2000-12-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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