| 摘要 |
PROBLEM TO BE SOLVED: To provide a direct current switchgear capable of repeating the opening and closing operation of a direct current in a relatively short time, without generating arc discharge.SOLUTION: In a direct current switchgear, a transient current circuit, having a diode D1 for transient current and a capacitor C connected in series, is provided in parallel with an electrification switch SW1, so that the capacitor C can be charged when the electrification switch SW1 is opened. A discharge circuit, having a diode D2 for discharge and a resistor R2 for discharge connected in series, is also provided to constitute a closed circuit together with the electrification switch SW1 and the capacitor C, so that the capacitor C can be discharged when the electrification switch SW1 is closed.SELECTED DRAWING: Figure 3 |
