Voltage relays CP-721

Reference: CP-721, EAN13: 5908312594932

Product description

Single phase. Programmable.
The CP-721 voltage relay is used to control the single-phase voltage and to protect the single-phase load from the effects of voltage increase or decrease outside the set values.

Functions

Setting the voltage window (UL and UH thresholds)
Separate setting of response times when UL and UH thresholds are exceeded
Setting the return time
Continuous indication of the network voltage
Signaling correct network voltage and contact closure

Functioning
In the operating mode, the display shows the value of the currently measured voltage.
The lower threshold (UL) and upper (UH) set by the user determines the voltage threshold. voltage window, within which voltage changes may occur, which do not cause the relay to operate. With the correct supply voltage, the relay contact remains closed. Changing the supply voltage above or below the set voltage thresholds will open the contact with a time delay set by the user. The red LED illuminates when the contact closes. Exceeding the voltage above 5 V from the set thresholds UH and UL is signaled by the pulsation of the values displayed on the display.
The relay will be connected again automatically in case of a permanent voltage value of 5 V in relation to the set threshold values UH and UL for the return time set by the user.

The relay can be supplied with voltage up to 450 V ~. This allows effective protection of the receiver even when the voltage is higher than the permissible standard. The device is protected against changing the polarity of the power supply - this will not destroy ("burn") the relay.

Type	single-phase
Power supply voltage	150÷450 V AC
Time lock	NO
Cooperation with power generators	YES
Load rating (AC-1)	2 x 8 A
The executive element	2 × relay
Contact configuration	2 × NO/NC
Separation of the contact	YES
Contact status indication	LED red
Display	3 × sectional LED 5 × 9 mm
Accuracy of setting	1 V
Accuracy of measurement	±1 V
Thresholds of voltage actuation / jump - lower UL	150÷210 V / 1 V
Thresholds of voltage actuation / stroke - upper UH	230÷260 V / 1 V
Return voltage hysteresis for UL / UH	5 V
Tripping time / stroke - for UL threshold	2÷10 s / 1 s
Operating time / stroke - for UH threshold	0,1÷1 s / 0,1 s
Return time for UL / UH	2 s÷9,5 min
Terminal	pluggable terminal blocks 4,0 mm²
Tightening torque	0,5 Nm
Power consumption	0,8 W
Working temperature	-25 ÷ 50 °C
Dimensions	2 modules (35 mm)
Assembly	on rail 35 mm
Ingress Protection Marking	IP20