Three-phase asymmetry and sequence monitors CKF-318
The CKF-318 order of phase and phase loss sensor is designed to protect electric motors powered from the three-phase network 3×400 V (without neutral wire).
Implemented security features:
- voltage asymmetry between the phases
- total loss of phase
- symmetrical voltage drop in three phases
- change the order of phases
- exceeding of the phase upper voltage threshold >480 V
- exceeding of the phase lower voltage threshold <320 v="" br="">
Functioning
With the right voltage conditions the contacts of the sensor contacts are closed. In the event of a voltage anomaly the sensor disconnects contacts with the appropriate time-delay. Return of the network parameters to standard conditions will reactivate the contacts with the preset delay.
Indications:
Green LED [R]:
- lights - correct parameters, contact closed
- flashes - counting off the delay time of a next activation
Red LED [<U]:
- lights - voltage asymmetry or voltage below 320 V
- flashes ×1/s - incorrect phase order
- flashes ×3/s - voltage above 480 V
- Power supply voltage
- 3 × 400 V
- Cooperation with power generators
- YES
- Phase failure / asymmetry monitoring
- YES
- Phase sequence control
- YES
- Contactor contact monitoring
- NO
- The executive element
- 2 × relay
- Maximum load current
- 2×6 A
- Contact configuration
- 2 × NO/NC
- Separation of the contact
- YES
- Voltage asymmetry
- 20÷80 V
- Voltage hysteresis
- 5 V
- Power control
- 2 × LED
- Switch off delay when asymmetry and decay
- 1÷10 s
- Delay of reconnection at asymmetry and decay
- 2÷360 s
- Operating voltage min. / max
- 320 V / 480 V
- Response time for voltages min. / max
- 5 s/0,5 s
- Terminal
- pluggable terminal blocks 2,5 mm²
- Tightening torque
- 0,4 Nm
- Power consumption
- 1,6 W
- Working temperature
- -25÷40°C
- Dimensions
- 1 module (18 mm)
- Assembly
- on rail 35 mm
- Ingress Protection Marking
- IP20
- TrueRMS
- TAK