Patent ID: 11929582
Assignee: ZONIT STRUCTURED SOLUTIONS, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method for use in manufacturing an automatic transfer switch;
comprising;
providing an automatic transfer switch system, comprising;
1) A switch unit having a first input for receiving a first power signal via a first power cord extending between said switch unit and a first power outlet associated with a first power source, a second input for receiving a second power signal via a second power cord extending between said switch unit and a second power outlet associated with a second power source different than the first power source, an output for providing a power signal to a connected load, and a switch for selectively connecting one of said first and second inputs to said output depending on a power signal status of at least one of said first and second power signals; and
2) a power surge suppression circuit for suppressing power surges at said switch unit:
disposing said power surge suppression circuit at one of: 1) between said switch unit and one of said first and second power outlets, and 2) between said switch unit and said connected load, wherein said switch unit compromises an electromechanical relay having a contact surface for making an electrical contact between an armature of said electromechanical relay and a connected circuit; and
applying an electrical signal to said contact surface; and
suppressing the power surges associated with the switch unit switching between the first power source and the second power source.