Phase I loss sensor 1Z contact 10A 2 modules CZF-B F&F
- Phase I loss sensor 1Z contact 10A 2 modules CZF-B F&F
CZF-B phase loss sensor
CZF-B
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 (i.e., by the voltage hysteresis value). With the above-mentioned anomalies, the relay contact is disconnected and it is impossible to start the motor.
Technical data
Supply voltage | 3 × 400 V + N |
Cooperation with power generators | NO |
Phase loss / asymmetry control | YES |
Phase sequence control | NO |
Contactor contacts control | NO |
Executive element | relay |
Maximum load current | 10 A |
Contact configuration | 1 × NO |
Contact separation | YES |
Tripping voltage asymmetry | 55 V |
Voltage hysteresis | 5 V |
Cut-off delay | 4 s |
Power monitoring | 3 × green LED |
Connection | screw terminals 4.0 mm? |
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 class | IP20 |
F&F CZF-B