REF542PLUS 2RCA029395 A0031 | ABB Feeder Terminal

The REF 542plus feeder terminal is a compact digital bay control technology solution. It can be used in several different medium voltage applications, such as in feeder protection, transformer protection and motor protection. The feeder terminal REF 542plus, like its predecessor REF 542, combines measurement, monitoring, protection, control and self diagnostics in one package. With its integrated communication protocols, the REF 542plus can be easily incorporated into any substation automation system from ABB or third parties.The REF542plus is based on a real-time microprocessor system. The measurement andprotection functions are executed by a Digital Signal Processor (DSP), while a MicroController (MC) is executing the control functions. Due to this task separation there is noimpact between the start and the trip behavior of the implemented protection scheme,should the control scheme be modified. The Communication Processor (CP) is neededfor connection to a station automation system.