Transfer Switch with Bypass Topology

摘要

An automatic transfer switch (ATS) for supplying power to a load is provided. The ATS includes a main transfer switch portion configured to connect one of a first or second power source to the load. The ATS also includes a bypass transfer switch portion configured to form a bypass connection from either the first or second power source to the load. The bypass transfer switch portion includes (i) a first bypass switch configured to connect the first power source to the load upon closing of the first bypass switch and (ii) a second bypass switch configured to connect the second power source to the load upon closing of the second bypass switch. Further, the ATS includes a primary load connection connecting the main transfer switch portion to the load, where the primary load connection is formed at least in part by the first and second bypass switches.

主权项

1. An automatic transfer switch (ATS) configured for supplying power to an electrical load, the ATS comprising:
a main transfer switch portion configured to connect either a first power source or a second power source to the load, the main transfer switch portion comprising (i) a first main switch configured to connect the first power source to the load upon closing of the first main switch and (ii) a second main switch configured to connect the second power source to the load upon closing of the second main switch; a bypass transfer switch portion configured to form a bypass connection from either the first power source or the second power source to the load, the bypass transfer switch portion comprising (i) a first bypass switch configured to connect the first power source to the load upon closing of the first bypass switch and (ii) a second bypass switch configured to connect the second power source to the load upon closing of the second bypass switch; and a primary load connection connecting the main transfer switch portion to the load, wherein the primary load connection is formed at least in part by the first bypass switch and the second bypass switch, and wherein closing of either the first bypass switch or the second bypass switch severs the primary load connection between the main transfer switch portion and the load.