CIRCUIT BREAKER WITH IMPROVED ARC QUENCHING

CIRCUIT BREAKER WITH IMPROVED ARC QUENCHING

A circuit breaker (20) having an arc quenching system is provided. The quenching system includes an ablative device (50) positioned within a chamber (44). An end of the ablative device (50) includes an opening (58) that receives a stationary contact (22). A movable contact arm (26) travels within a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PANDEY, KAMAL, ASOKAN, THANGAVELU, DESHMUKH, RANJIT MANOHAR, GURURAJ, RANGANATH
Format: Patent
Sprache:eng ; fre
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Beschreibung
Zusammenfassung:A circuit breaker (20) having an arc quenching system is provided. The quenching system includes an ablative device (50) positioned within a chamber (44). An end of the ablative device (50) includes an opening (58) that receives a stationary contact (22). A movable contact arm (26) travels within a channel (54) between the closed position and an open position. When an abnormal operating condition is detected, the circuit breaker (20) trips causing the contact arm (26) to move. This generates a plasma arc that evaporates material from the ablative device (50). The evaporated material generates a pressurized gas that cools and quenches the plasma arc to improve the performance of the circuit breaker (20) during undesired operating conditions such as a short circuit.