Phase I loss sensor 1P contact 10A threshold adjustable 165-180V 1 module CZF-311 F&F
- Phase I loss sensor 1P contact 10A threshold adjustable 165-180V 1 module CZF-311 F&F
CZF-311 phase loss sensor
CZF-311
Phase loss sensor is designed to protect an electric motor supplied from a three-phase network in cases of voltage loss in at least one phase or voltage asymmetry between phases, threatening destruction of the motor.
Operation
Voltage loss in at least one phase of any phase or voltage asymmetry between phases above the tripping threshold will turn off the motor. Shutdown will occur with a delay of 4 s, which prevents accidental disconnection of the motor during a momentary voltage drop. Reconnection will occur automatically when the voltage rises by 5 V above the trip voltage (ti. by the voltage hysteresis value). At the above anomalies, the relay contact is disconnected
Technical data:
Supply voltage | 3 × 400 V + N |
Cooperation with power generators | NO |
Control of phase loss / asymmetry | YES |
Phase sequence control | NO |
Contactor contacts control | NO |
Executive element | relay |
Maximum load current | 10 A |
Contact configuration | 1 × NO/NC |
Contact separation | YES |
Tripping voltage asymmetry | 40÷80 V |
Voltage hysteresis | 5 V |
Cut-off delay | 4 s |
Power supply monitoring | 3 × green LED |
Connection | screw terminals 2.5 mm? |
Tightening torque | 0.4 Nm |
Power consumption | 0,56 W |
Operating temperature | -25÷40°C |
Dimensions | 1 module (18 mm) |
Mounting | on a 35 mm rail |
Protection class | IP20 |
F&F CZF-311