Patent ID: 9692254
Date: 2017-06-27
CPC Classifications: H01H,H02J

Claim:
1. A power system for powering a system load, comprising: a housing; an automatic transfer switch (ATS switch) held in or by the housing with a three position contact switch, including a first power source contact, a second power source contact and a system load contact and is configured to selectively (i) connect a system load to only a first power source through a closed state of the first power source contact (ii) connect the system load to only a second power source through a closed state of the second power source contact, and (iii) disconnect the system load from the first and second power sources with open states of the first and second power source contacts; a Bypass switch held in or by the housing with a three position contact switch, including a first power source contact, a second power source contact and a system load contact and is configured to selectively (i) connect the system load to only the first power source through a closed state of the first power source contact, (ii) connect the system load to only a third power source through a closed state of the third power source contact, and (iii) disconnect the system load from the first and third power sources with open states of the first and third power source contacts; and a control circuit in communication with the ATS switch and the Bypass switch to automatically direct the Bypass switch and the ATS switch to carry out the selective connections with automated, redundant power transitions to the system load from the first, second and third power sources, wherein the first power source is a primary power source that is an input into each of the ATS and Bypass switches as the first power source contact and the second and third power sources are back-up power sources that are only connected to the system load when the primary power source is unavailable or during a test mode.