Three-phase asymmetry and sequence monitors CKF-318
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  • Three-phase asymmetry and sequence monitors CKF-318
  • Three-phase asymmetry and sequence monitors CKF-318
  • Three-phase asymmetry and sequence monitors CKF-318

Three-phase asymmetry and sequence monitors CKF-318

CKF-318-TRMS, 5908312590927
Order of phase and phase loss sensor. Without neutral wire.
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
     




CKF-318-TRMS
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