EP 1027612 A1 20000816 - 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
Application
Priority
- DE 9803016 W 19981014
- DE 19747390 A 19971027
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
IPC 8 full level
G01R 23/20 (2006.01); G01R 31/02 (2006.01); G01R 31/55 (2020.01); G01R 19/155 (2006.01); H02H 5/10 (2006.01)
CPC (source: EP US)
G01R 23/20 (2013.01 - EP US); G01R 31/55 (2020.01 - EP US); G01R 19/155 (2013.01 - EP); H02H 5/10 (2013.01 - EP)
Citation (search report)
See references of WO 9922249A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
DE 9803016 W 19981014; EP 98959722 A 19981014