CO2 switch for high voltage DC grid

摘要

The invention relates to a DC circuit breaker (5) having a sealed chamber comprising a gas phase fluid containing at least 70% of carbon dioxide in volume at a pressure of 0.65 MPa to 1.1 MPa when measured at a temperature of 20 캜, And a resonant circuit having an inductance (L) in μH units smaller than 2700xC- ^0.84 , as well as to a switch for a high or medium voltage DC grid.