The Automatic Load Transfer Switch is installed on the major load of three phases or inside of the customers, and two medium distribution networks are connected to this switch. The ALTS is composed of two switches and three high voltage terminals for connection.
The ALTS is used at major loads and lines which require a highly reliable supply, such as hospitals or major public facilities, and even if loads loss power due to faults in any one line, it recovers power supply within a few seconds.
If power that supplies to loads is lost, it opens shortly the current closed switch according to the setting, and it resumes power supply to loads by closing the switch connected to the alternate source.
This solution can be applied to utility to generator with two or three sources as well as utility to utility application of two sources.