Schneider Electric Phase Sequence Relay RM22TA33

Manufacturer: Schneider Electric
Designation: Phase Sequence Relay
Type: RM22TA33
Electrical connection type: Screw connection
With removable terminals: no
Rated control supply voltage Us at AC 50 Hz: 380..480 V
Rated control supply voltage Us at AC 60 Hz: 380..480 V
Voltage type for actuation: AC
Phase sequence monitoring function: yes
Phase failure detection function: yes
Under-voltage detection function: no
Over-voltage detection function: no
Asymmetry detection function: yes
Voltage measurement range: 304..576 V
Min. adjustable response delay time: 0 s
Max. permissible response delay time: 0 s
Min. adjustable reset delay time: 0.1 s
Max. permissible reset delay time: 30 s
Number of contacts as changeover: 2
Width: 22.5 mm
Height: 90 mm
Depth: 73 mm

The network monitoring relay monitors three-phase networks (380-480 VAC) for phase sequence, phase failure, and phase asymmetry (5-15%). It features two relay changeover contacts that can handle loads up to 8 A. The limit for asymmetry and a shutdown delay for the output can be adjusted. Settings are made via controls on the front, which can be protected against changes under a transparent cover. A lit scale pointer allows for clear visibility of the potentiometer settings even from a distance. The front diagnostic switch enables the output relays to be turned off for testing 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. Power is supplied from the measurement circuit. The wiring connection is made via screw terminals.