Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
H02H3/353—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system involving comparison of phase voltages
Landscapes
Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections
(AREA)
Überwachungsvorrichtung und Verfahren zur kontinuierlichen und vom Bahnrückstromfluss unabhängigen Überwachung der Integrität der Rückleitungsanschlussleiter einer Rückleitung für den Bahnstrom einer Bahnenergieversorungsanlage und Rückleitungs-System mit einer Rückleitung und einer Überwachungsvorrichtung zur Überwachung der Integrität der Rückleitungsanschlussleiter der Rückleitung
Einrichtung zur Aufrechterhaltung der normalen Leitfaehigkeit von Kontakt-stellen eines Stromkreises, zwischen denen der Spannungsabfall eine bestimmte Groesse nicht ueberschreiten soll
Verfahren zur Strommessung in je einem von mehreren parallelen, an einen gemeinsamen Verbraucher gefuehrten Stromkreisen verschiedener Nennstromstaerke