HIGH SPEED VACUUM CIRCUIT BREAKER

PURPOSE:To enhance the stability in holding the contact parted state by furnishing a logical part, emitting a command prior to re-mark of the contact, and by turning off the line switch. CONSTITUTION:A means is furnished to accumulate the repulsive force of a repulsive coil RC against the actions of...

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Bibliographic Details
Main Author HASEGAWA SANKICHI
Format Patent
LanguageEnglish
Published 09.11.1989
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:PURPOSE:To enhance the stability in holding the contact parted state by furnishing a logical part, emitting a command prior to re-mark of the contact, and by turning off the line switch. CONSTITUTION:A means is furnished to accumulate the repulsive force of a repulsive coil RC against the actions of a compression coil spring and a snubber damper D and to cause re-make of a vacuum valve contact V after the repulsive force has gone out. Before re-making, a command is emitted at a certain timing from a logical part AM, and the line switch LS is put off to hold the contact parted state. This constitution permits eliminating use of any contact parted state holding mechanism or return mechanism and also reduction of the number of parts used. Provision of the snubber damper D shortens the time for contact parting command to ensure that the non-lap time till re-making is secured large, which should enhance the safety. Further the whole device is shut off from the power supply P by the LS, so that the contact parting can be held in stable condition.
Bibliography:Application Number: JP19880109492