LINE BREAKER FOR VEHICLE

PURPOSE:To prevent fault current from spreading by containing a line breaker for interrupting main circuit DC current of an electric vehicle and a high speed vacuum circuit breaker in separate boxes. CONSTITUTION:Main circuit DC current is taken in from a stringing 1 through a current collector 2 an...

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Bibliographic Details
Main Author HASEGAWA SANKICHI
Format Patent
LanguageEnglish
Published 08.11.1991
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES
ELECTRIC SWITCHES
ELECTRICITY
ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL
EMERGENCY PROTECTIVE DEVICES
MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES
PERFORMING OPERATIONS
RELAYS
SELECTORS
TRANSPORTING
VEHICLES IN GENERAL
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Summary:PURPOSE:To prevent fault current from spreading by containing a line breaker for interrupting main circuit DC current of an electric vehicle and a high speed vacuum circuit breaker in separate boxes. CONSTITUTION:Main circuit DC current is taken in from a stringing 1 through a current collector 2 and fed through line breakers 3a, 3b, contained in a double insulation line breaker box 14, into a circuit breaker box 15a secure directly to the body 8 by means of fixing metals 16. The DC current is fed through a DC high speed vacuum circuit breaker 15, contained in the circuit breaker box 15a, and a filter reactor 5 to an inverter 6 where it is inverted into VVVF three-phase current for driving an induction motor 7. The current then flows through the body 8 and wheels 9 into a rail 10 and fed back to a substation (now shown). Consequently, no arc is produced even upon interruption of main circuit current and fault current is prevented from spreading.
Bibliography:Application Number: JP19900045418