Device for switching an electrical load circuit operated with high voltage from a voltage source
AssigneeIIE GmbH & Co. KG
InventorEkkehard Kress
Life of this patent
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Abstract
Apparatus for switching an electrical load circuit operated at high voltage are disclosed. The embodiments described herein include a device for controlling the switching of a high voltage circuit such that both the connection and disconnection can be carried out in a simple and reliable manner. Embodiments described herein can also prevent the unintentional opening of the switching device which can greatly extend the service life of the switching circuitry. Moreover, the apparatus disclosed herein reliably prevent the formation of an arc during switching by enabling the switching operation to take place without a load.
Claims8
A device for switching an electrical load circuit operated at high voltage from a voltage source in an electrically powered transportation means by a drive operated at low voltage, wherein a contact stud is coupled to a push rod of a linear drive, the contact stud being operable to move into at least two positions in a switch housing, wherein the switch housing has at least two contact rings on its internal wall, wherein a first contact ring of the at least two contact rings is coupled to the voltage source and wherein a second contact ring of the at least two contact rings is coupled to the load circuit, wherein the linear drive is a stepping motor, the rotor has a threaded nut for moving the push rod designed as a threaded rod, and the push rod is secured against rotation and the threaded nut against rotation relative to the rotor.
Dependencies are inferred from the claim text.