Fault-current circuit breaker and magnetic core for a fault-current circuit breaker

Fault-current circuit breaker and magnetic core for a fault-current circuit breaker

The breaker has a summation current transformer with a soft magnetic core (2) made of nano-crystalline iron base alloy and with differential windings (4, 5) attached on the core. A relay (3) is connected with a measuring coil (7) of the transformer. The magnetic core exhibits a maximum permeability...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZAMBORSZKY, FERENC, FERCH, MARTIN, HAAS, HERBERT, CISMADIA, ELEK, SENFTINGER, WOLFGANG
Format: Patent
Sprache:eng ; pol
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Beschreibung
Zusammenfassung:The breaker has a summation current transformer with a soft magnetic core (2) made of nano-crystalline iron base alloy and with differential windings (4, 5) attached on the core. A relay (3) is connected with a measuring coil (7) of the transformer. The magnetic core exhibits a maximum permeability of more than 350 and a remanence ratio of more than 0.7, where the alloy has a structure, which consists of fine crystalline grains.