Евроавтоматика F&F
Phase control relay for networks with isolated neutral CKF-318 (35mm DIN rail mounting; trip threshold adjustment; phase sequence control; 3x400V 8A 2P IP20) F&F EA04.004.007 Euroautomatika F&F
SKU: EA04.004.007
ETIM: EC001441
2,766 ₽
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Analogues by specifications
"CKF" series phase control relay
DIN-rail mounting.
Designed to protect electric motors and electrical installations powered from a three-phase network in cases of: absence of at least one phase, voltage asymmetry, voltage drop below 320 V, voltage rise above 480 V, or phase sequence violation.
Operating principle
If the voltage is within normal limits, the executive relay contacts are closed and voltage is supplied to the motor control contactor to turn it on. In case of any of the above-mentioned emergency situations, the relay contacts open and the contactor is disconnected. Switching occurs automatically after the restoration of the mains supply voltage.
Features:
phase presence control;
asymmetry control between phases;
low voltage control;
upper voltage control;
phase sequence control;
supply voltage 3x400 V AC;
contact - 2NO/NC (2x8 A).
Height
90 мм
Depth
65 мм
Voltage measuring range to
480 В
Voltage measuring range from
320 В
Number of switching contacts
2
Maximum permissible delay time
10 с
Maximum permissible trip delay time without holding
360 с
Minimum adjustable delay time
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Minimum adjustable response delay time without time lag
2 с
Phase sequence monitoring function
Yes
Phase asymmetry detection function
Yes
Phase failure detection function
Yes
Overvoltage detection function
Yes
Undervoltage detection function
Yes
Width
18 мм
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