domestic and industrial automation

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Three-phase asymmetry and sequence monitors CKF-BT

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Three-phase asymmetry and sequence monitors CKF-BT

Reference: CKF-BT, EAN13: 5908312592488

Product description

With adjustable actuation time 0,5÷5sec.
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 set value causes switching-OFF the motor. The motor switching-OFF occurs with 4 sec 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	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	40÷80 V
Voltage hysteresis	5 V
Switch off delay	0,5÷5 s
Power control	2 × LED
Terminal	pluggable terminal blocks 4,0 mm²
Tightening torque	0,5 Nm
Power consumption	1,6 W
Working temperature	-25÷40°C
Dimensions	2 modules (35 mm)
Assembly	on rail 35 mm
Ingress Protection Marking	IP20
TrueRMS	NIE