Schneider Electric Voltage Monitor RM22TR31

Manufacturer: Schneider Electric
Designation: Voltage Monitor
Type: RM22TR31
Electrical connection type: Screw connection
With removable terminals: no
Rated control supply voltage Us at AC 50 Hz: 200-240 V
Rated control supply voltage Us at AC 60 Hz: 200-240 V
Voltage type for operation: AC
Phase sequence monitoring function: yes
Phase failure detection function: yes
Under-voltage detection function: yes
Over-voltage detection function: yes
Asymmetry detection function: no
Voltage measurement range: 160-288 V
Min. adjustable response delay time: 0.1 s
Max. permissible response delay time: 30 s
Min. adjustable fallback delay time: 0.1 s
Max. permissible fallback delay time: 30 s
Number of contacts as changeover: 2
Width: 22.5 mm
Height: 90 mm
Depth: 73 mm

The Schneider Electric Voltage Monitor RM22TR31 is a network monitoring relay that monitors three-phase networks (200-240 VAC) for phase sequence, phase failure, under-voltage, and over-voltage. It features two relay changeovers that can handle loads up to 8 A. For under-voltage and over-voltage, there are limit values (-20-2%/+2-+20%) as well as an adjustable response or dropout delay. Settings are made via controls on the front, which can be protected against changes under a transparent cover. With a lit scale pointer, the adjustment of the potentiometers is easily visible from a distance. The front diagnostic switch allows for the disconnection of the output relays to test the overall application. Closing the transparent cover automatically resets the diagnostic switch. Three LEDs indicate the status. The width of the device is 22.5 mm, and it is mounted on a DIN rail. The wiring connection is made via screw terminals.