Phase flux barriers for transfer switch
AssigneeOnan Corporation
InventorsLoren L. Rademacher, Larry H. Smith, Joseph T. Miller
Life of this patent
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Abstract
A transfer switch that includes output contacts, primary input contacts, secondary input contacts and a switch stack. The switch stack alternately connects the output contacts to the primary input contacts and the secondary input contacts via at least one conductive path. The transfer switch further includes at least one flux barrier that is at least partially positioned near the conductive path to minimize magnetic interaction with the conductive path as current travels through the switch stack.
Claims20
A transfer switch comprising:
- output contacts;
- primary input contacts;
- secondary input contacts;
- and
- a switch stack alternately connecting the output contacts to the primary input contacts and the secondary input contacts via at least one conductive path;
- and
- a flux barrier at least partially positioned near the conductive path to minimize magnetic interaction with the conductive path as current travels through the switch stack.
The transfer switch of claim 3 wherein the planar sheet is made of steel.
A method of supplying current to an electric load comprising:
- switching contacts within a transfer switch to alternately engage the switching contacts with primary input contacts that are coupled to a primary power source and secondary input contacts that are coupled to a secondary power source;
- and
- minimizing magnetic interaction with a conductive path in the transfer switch as current travels through the transfer switch.
A transfer switch comprising:
- output contacts;
- primary input contacts;
- secondary input contacts;
- a switch stack alternately connecting the output contacts to the primary input contacts and the secondary input contacts via a conductive path;
- and
- means for reducing magnetic interaction with the conductive path in the transfer switch.
Dependencies are inferred from the claim text.