Patent ID: 7589289
Filing Date: 2009-09-15
Classification: H01H,H02B

Abstract:
1. A solid insulated switchgear having a main unit for receiving electric power, the main unit comprising: a first main bus connection portion to which a first main bus for one power source is connected; a second main bus connection portion to which a second main bus for another power source is connected; a first disconnection switch electrically connected to or separated from the first main bus connection portion, wherein the first disconnection switch comprising a base frame tunneled in one direction, having a load connection portion for electrically connecting to a load, and formed of an insulating solid material to surround the load connection portion, a driving source assembly which provides rotating power, an insulating shaft formed of an insulating material, rotated by the rotating power provided from the driving source assembly, and having a screw on an outer circumferential surface thereof, a stationary contactor electrically connected to the first main bus connection portion, and having a fixed contact surrounded by an insulating solid material, a movable contactor engaged with the insulating shaft in mesh, electrically connected to the load connection portion of the base frame, and linearly movable to a position contacting to a fixed contact of the stationary contactor or a position separated from the fixed contact of the stationary contactor in accordance with the rotation of the insulating shaft, an insulating spacer disposed between the base frame and the stationary contactor to secure an electric insulation, and formed of an insulating solid material having a cavity therein to allow the movable contactor to move through, and a power transferring assembly disposed between the driving source assembly and the insulating shaft, for transferring the rotating power generated from the driving source assembly to the insulating shaft, and electrically insulating the driving source assembly and the base frame from each other; a second disconnection switch having parts interchangeable with the parts of the first disconnection switch, and electrically connected to or separated from the second main bus connection portion; a first ground switch having parts interchangeable with the parts of the first disconnection switch, and switchable to a grounded position or a position separated from ground, for electrically connecting the first disconnection switch and the second disconnection switch to each other; a circuit breaker electrically connected to the second disconnection switch, for connecting or breaking a conducting path from the second disconnection switch; a driving mechanism for driving the circuit breaker to a connecting position or a breaking position; and a cable socket electrically connected to the circuit breaker, and having a socket portion electrically connected to a load side cable.