Network monitoring, RM22TR33, Schneider Electric
This mains monitoring relay monitors three-phase mains for phase sequence, phase failure, undervoltage and overvoltage. Two relay changers are available for signalling, which can be loaded up to 8 A. There is a limit value for under- and overvoltage and a response or drop-out delay can be set for the output. The settings are made via operating elements in the front, which can be protected against changes under a transparent cover. The adjustment of the potentiometers can be clearly seen from a distance with an illuminated scale arrow. The diagnostic switch on the front allows the output relays to be switched off to test the entire application. The diagnostic switch is automatically reset when the transparent cover is closed. Three LEDs indicate the status. The width is 22.5 mm and the unit is mounted on the top-hat rail. The cable connection is made via screw terminals.
