Three-phase asymmetry and sequence monitors CKF-316 TRMS

Three-phase asymmetry and sequence monitors CKF-316 TRMS

CKF-316-TRMS, 5902431673578

Product description

With fixed actuation threshold voltage asymmetry.
Three phase and sequence monitor is designed to protect tree phase electric motors against voltage drop in at least one phase or voltage asymmetry between phases, which could damage the motor, with additional protection of motor rotation direction in case of phase change before the monitor.

 



 

Functioning
Voltage collapse in any phase or voltage asymmetry between phases above fixed actuation threshhold causes switching-OFF the motor. The motor switching-OFF occurs after delay of 4 sec, which prevents accidental motor switching-OFF caused by instantaneous voltage drop. Switching the motor ON anew occurs automatically when the voltage increases of 5V~ above activation voltage (i.e. about value of voltage hysteresis). At occurrence of these disturbances, it is not possible to  set motor in motion. In case of change of phase sequence, before the monitor, which causes change of motor rotation direction (in relation to that primarily set) is signaled by shining red diode LED along with impossibility of  switching-ON the motor. The re-connection is possible after the return to correct phase sequence.
 




Power supply voltage 3 × 400 V + N
Cooperation with power generators NO
Phase failure / asymmetry monitoring YES
Phase sequence control YES
Contactor contact monitoring NO
The executive element relay
Maximum load current 10 A
Contact configuration 1 × NO/NC
Separation of the contact YES
Voltage asymmetry 55 V
Voltage hysteresis 5 V
Switch off delay 4 s
Power control 2 × LED
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







System which prevents automatic motor restart after power recovery