Switch, Gas Insulated Switchgear, and Method for Controlling Switch
AssigneeMitsubishi Electric Corporation
InventorsMieko NAKANO, Shinichiro NAKAUCHI, Yasunori NAKAMURA, Takahiro EDO
Life of this patent
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Abstract
A switch includes a fixed contact, a movable contact, a motor to drive the movable contact via a drive mechanism that converts rotational motion into linear motion, and a drive controller to control driving of the motor. The drive controller controls a rotation speed of the motor such that during an opening operation of the switch, a moving speed of the movable contact in a part of an entire moving range of the movable contact is lower than a moving speed of the movable contact during a closing operation of the switch. The part of the entire moving range includes an interrupting point at which an arc current is extinguished.
Claims13
A switch comprising:
- a fixed contact;
- a movable contact;
- a motor to drive the movable contact via a drive mechanism that converts rotational motion into linear motion;
- and
- a drive controller to drive and control the motor, wherein
- the drive controller controls a rotation speed of the motor such that during an opening operation of the switch, a moving speed of the movable contact in a part of an entire moving range of the movable contact is lower than a moving speed of the movable contact during a closing operation of the switch, and
- the part of the entire moving range includes an interrupting point at which an arc current is extinguished.
A method for controlling a switch that includes:
- a fixed contact;
- a movable contact;
- and
- a motor to drive the movable contact via a drive mechanism that converts rotational motion into linear motion,
- the method comprising:
- controlling the motor, during a closing operation of the switch, to rotate at a first rotation speed from start to completion of the closing operation;
- and
- controlling the motor, during an opening operation of the switch, to rotate at a second rotation speed in a part of an entire moving range of the movable contact, the second rotation speed being lower than the first rotation speed, wherein
- the part of the entire moving range includes an interrupting point at which an arc current is extinguished.
Dependencies are inferred from the claim text.