428-1981 - IEEE Standard Definitions and Requirements for Thyristor AC Power Controllers
Description: These recommendations apply to thyristor AC power controllers that are low voltage, power electronic, industrial class equipment for the control or switching of AC power. Switching, multicycle control and phase control are included. Cycloconverters are excluded. Examples of application include, but are not limited to, industrial oven controls, static motor starters, static relays, etc.