Three-phase asymmetry and sequence monitors CKF-318

Reference: CKF-318-TRMS, EAN13: 5908312590927

Product description

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

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