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Phase control relays CZF2
With fixed actuation threshold voltage asymmetry.
Three phase monitor serves to protect the three-phase electric motors supplied from three-phase mains, against phase collapse in at least one phase or against phase-to-phase voltage asymmetry or against damage of contacts threatening to damage the motor.
Three phase monitor serves to protect the three-phase electric motors supplied from three-phase mains, against phase collapse in at least one phase or against phase-to-phase voltage asymmetry or against damage of contacts threatening to damage the motor.
Functioning
Phase collapse in at least one, optional phase or voltage unbalance between phase fixed actuation threshhold causes switching-OFF the motor. The motor switching-OFF occurs with 4 sec delay, which prevents any accidental motor disconnecting at temporary voltage drop. The re-connection will occur automatically at voltage increase of 5V above activation voltage (i.e. of value of voltage hysteresis). At occurrence of these disturbances, it is not possible to set a motor in motion. Shining of red diode LED along with simultaneous disconnecting the apparatus permanently, indicates contactor contacts damage. Reactivation of the apparatus is possible (after contact repair), after disconnecting from supply all three phases (fuses) and then, after switching-ON anew.
- Power supply voltage
- 3 × 400 V + N
- Cooperation with power generators
- NO
- Phase failure / asymmetry monitoring
- YES
- Phase sequence control
- NO
- Contactor contact monitoring
- YES
- The executive element
- relay
- Maximum load current
- 10 A
- Contact configuration
- 1 × NO
- Separation of the contact
- YES
- Voltage asymmetry
- 45 V
- Voltage hysteresis
- 5 V
- Switch off delay
- 4 s
- Power control
- 2 × LED
- Terminal
- pluggable terminal blocks 1,5 mm²
- Tightening torque
- 0,4 Nm
- Power consumption
- 1,6 W
- Working temperature
- -25÷40°C
- Dimensions
- 95 mm x 60 mm x 25 mm
- Assembly
- on wall
- Ingress Protection Marking
- IP20
- TrueRMS
- NIE
System which prevents automatic motor restart after power recovery
16 other products in the same category
With fixed actuation threshold voltage asymmetry.
Three phase monitor serves to protect the three-phase electric motors supplied from three-phase mains, against phase collapse in at least one phase or against phase-to-phase voltage asymmetry or against damage of contacts threatening to damage the motor.
Three phase monitor serves to protect the three-phase electric motors supplied from three-phase mains, against phase collapse in at least one phase or against phase-to-phase voltage asymmetry or against damage of contacts threatening to damage the motor.