Phase control relays CZF-BR TRMS

Phase control relays CZF-BR TRMS

CZF-BR-TRMS, 5902431673776

Product description

With adjustable actuation threshold at voltage asymetry.
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 NO
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 4 s
Power control 3 × LED green
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 TAK





System which prevents automatic motor restart after power recovery