Patent ID: 9136696
Filing Date: 2015-09-15
Classification: H02H

Abstract:
1. An inverter bypass switch for selectively routing electrical power through or around an inverter drive, said switch comprising one or more sections joined together to form a contact block having a central axis, a rotatable shaft disposed along the central axis, electrically conductive exterior interconnections for connecting selected stationary contacts, externally mounted electrical contacts for receiving electrical wires, each section comprising: a cam mounted on the shaft; at least one stationary contact connected to the contact block; and at least one radially sliding moveable contact operably connected to the cam by a spring-loaded follower that biases the moveable contact into engagement with the stationary contact when a low profile section of the cam faces the follower; wherein manual rotation of the shaft causes the cam to rotate and act upon the moveable contact to cause the moveable contact to move either into or out of engagement with the stationary contact, thus causing electrical power to be directed either through or around the inverter drive; the inverter bypass switch further comprising an auxiliary contact section having an auxiliary contact actuated by turning of the shaft, such that the auxiliary contact opens before electrical power is directed around the inverter drive and closes after the electrical power is directed through the inverter drive, wherein opening of the auxiliary contact removes input power from a controller of the inverter drive.