Patent ID: 8455775
Filing Date: 2013-06-04
Classification: H01H

Abstract:
1. A high voltage load breaker switch comprising: a main circuit switch for switching a main circuit between an electric power source and an electric load; a ground circuit switch for switching a ground circuit; an actuator mechanism for actuating the main circuit switch and the ground circuit switch to a closing position or an opening position; and a power transmission apparatus for the high voltage load breaker switch disposed between the main circuit switch and the actuating mechanism and between the ground circuit switch and the actuating mechanism to transfer a driving force from the actuating mechanism to the main circuit switch and the ground circuit switch, the power transmission apparatus comprising: a power transmission shaft having one end connected to the actuating mechanism; a cam shaft connected to interlock with the power transmission shaft and having a main cam; a first operating shaft for driving the main circuit switch to switch a closing position or an opening position; a second operating shaft for driving the ground circuit switch to switch a closing position or an opening position; a main circuit link unit having a pair of links connected to the first operating shaft and the main circuit switch respectively and being contactable with one side of the main cam; a ground circuit link unit having a pair of links connected to the second operating shaft and the ground circuit switch respectively and being contactable with the other side of the main cam; an opening spring connected between the first operating shaft and the second operating shaft and providing the first operating shaft with an elastic force to rotate when the main circuit switch performs an opening operation; and a main circuit opening power transmission mechanisms for transferring opening position rotating power of the power transmission shaft to the main circuit switch to enable the main circuit switch to move to an opening position.