Global Patent Index - EP 1027612 A1

EP 1027612 A1 2000-08-16 - METHOD AND MEASURING UNIT FOR VERIFYING THE PRESENCE OF A NEUTRAL CONDUCTOR CONNECTION BETWEEN A FOUR WIRE SYSTEM AND A MEASURING UNIT

Title (en)

METHOD AND MEASURING UNIT FOR VERIFYING THE PRESENCE OF A NEUTRAL CONDUCTOR CONNECTION BETWEEN A FOUR WIRE SYSTEM AND A MEASURING UNIT

Title (de)

VERFAHREN SOWIE MESSEINHEIT ZUR ÜBERPRÜFUNG DES VORLIEGENS EINER NULLLEITERVERBINDUNG ZWISCHEN EINEM VIERLEITERNETZ UND EINER MESSEINHEIT

Title (fr)

PROCEDE ET UNITE DE MESURE PERMETTANT DE VERIFIER LA PRESENCE D'UNE CONNEXION DE NEUTRE ENTRE UN RESEAU QUATRE FILS ET UNE UNITE DE MESURE

Publication

EP 1027612 A1 (DE)

Application

EP 98959722 A

Priority

  • DE 9803016 W
  • DE 19747390 A

Abstract (en)

[origin: WO9922249A1] The invention relates to a method and a measuring unit for verifying the presence of a proper neutral conductor connection between a four wire system and a measuring unit, especially an electricity consumption meter, in a four wire system whereby the occurrence of a characteristic frequency at the neutral point is monitored. An error signal is generated according to the occurrence of said frequency.

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

G01R 31/02; G01R 23/20

IPC 8 full level (invention and additional information)

G01R 23/20 (2006.01); G01R 31/02 (2006.01); G01R 19/155 (2006.01); H02H 5/10 (2006.01)

CPC (invention and additional information)

G01R 23/20 (2013.01); G01R 31/024 (2013.01); G01R 19/155 (2013.01); H02H 5/10 (2013.01)

Citation (search report)

See references of WO 9922249A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9922249 A1 19990506; EP 1027612 A1 20000816

INPADOC legal status


2002-02-06 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010727

2001-05-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010316

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000417

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB