CKF-BT F&F phase loss and astmetri sequence sensor

Product description

Voltage loss in at least one phase of any phase or voltage asymmetry between phases above the tripping threshold will shut down the motor. Shutdown will occur with a delay of 4 s, which prevents accidental disconnection of the motor at a momentary voltage drop. Reconnection will occur automatically when the voltage rises by 5 V above the trip voltage (i.e., by the voltage hysteresis value).

With the above anomalies, it is impossible to start the motor. In the case of a change in the order of the phases in front of the sensor causing an undesirable change in the direction of rotation of the motor, the sensor will not allow the motor to start. Reconnection is possible after the return of the correct phase order of the correct phase order.

Technical data:

• Supply voltage 3 × 400 V + N
• Cooperation with generators NO
• Phase loss / asymmetry control YES
• Phase sequence control YES
• Contactor contactor control NO
• Executive element relay
• Maximum load current 10 A
• Contact configuration 1 × NO/NC
• Contact separation YES
• Voltage asymmetry of trip 40÷80 V
• Voltage hysteresis 5 V
• Switch-off delay 0 ,5÷5 s
• Power supply monitoring 2 × LED
• Connection screw terminals 4.0 mm²
• Tightening torque 0.5 Nm
• Power consumption 1.6 W
• Operating temperature -25÷40°C
• Dimensions 2 modules (35 mm)
• Mounting on a 35 mm rail
• Protection degree IP20