What does SWTG stand for?

Switching

An action by the Load Dispatcher of opening or closing various circuit breakers in the plant for various reasons such as work by line gang, work by breaker gang, restoring lost power. Switching A communications method that uses tempo-rary rather than permanent connections to establish a link or to route information between two parties. In the dial-up telephone network, for example, a caller’s line goes to a switching center, where the actual connection is made to the called party.