ELECTRICAL DC SWITCHING SYSTEM

The present disclosure relates to an electrical DC switching system (1) for extinguishing an electric arc, wherein the electrical DC switching system comprises: a contact arrangement (3) having a first contact (3a) and a second contact (3b), a current injection circuit (5) including a resonance circ...

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Bibliographic Details
Main Authors ZHANG ZICHI, VALDEMARSSON STEFAN, JOHANSSON ERIK
Format Patent
LanguageChinese
English
Published 16.07.2019
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:The present disclosure relates to an electrical DC switching system (1) for extinguishing an electric arc, wherein the electrical DC switching system comprises: a contact arrangement (3) having a first contact (3a) and a second contact (3b), a current injection circuit (5) including a resonance circuit configured to be connected across the contact arrangement (3), and a first switch connected to the resonance circuit (6) and to the first contact (3a), wherein the first switch (S1) is configured to be switched between an open state and a closed state, wherein in the closed state the first switch is configured to enable an injection current to flow through the resonance circuit (6) in a first flow direction and into the contact arrangement (3) in a direction opposite to a flow direction of acontact arrangement arc current, and an arc chute assembly (7) comprising a plurality of splitter plates configured to extinguish an electric arc across the first contact (3a) and the second contact(3b), wherein each splitte
Bibliography:Application Number: CN201780074820