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Phase control relays CZF
With the fixed actuation threshold voltage asymmetry.
Three phase monitors serve 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, threatening to damage the motor.
Three phase monitors serve 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, threatening to damage the motor.
Functioning
Phase collapse in at least one phase or voltage unbalance between phases above fixed actuation threshold causes switching-OFF the motor. The motor switching-OFF occurs with 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.
- Power supply voltage
- 3 × 400 V + N
- Cooperation with power generators
- NO
- Phase failure / asymmetry monitoring
- YES
- Phase sequence control
- NO
- Contactor contact monitoring
- NO
- 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
- 3 × LED green
- Terminal
- OMY 4×1 mm²; 2×0,75 mm², l: 0,5 m
- Power consumption
- 1,6 W
- Working temperature
- -25÷40°C
- Dimensions
- 51×67×26 mm (± 1 mm)
- Assembly
- on wall
- Ingress Protection Marking
- IP20
- TrueRMS
- NIE
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System which prevents automatic motor restart after power recovery
16 other products in the same category
With the fixed actuation threshold voltage asymmetry.
Three phase monitors serve 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, threatening to damage the motor.
Three phase monitors serve 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, threatening to damage the motor.