Voltage, current and temperature protection device in 3-phase circuits UZ2

The UZ2 voltage and current protection device is intended for monitoring and displaying the parameters of a three-phase network, as well as for protective shutdown of electrical equipment and / or activation of an alarm in the event of an emergency. These include the following:

• output of the supply voltage beyond the specified limits;
• absence of one or two phases in a three-phase network;
• adhesion of phases;
• incorrect phase sequence;
• amplitude phase shift;
• phase imbalance;
• exceeding the maximum current consumption;
• temperature rise of the protected object.

The device measures the voltage and current values for each phase separately and displays them on the built-in digital indicator with simultaneous status monitoring
UZ2 allows displaying the power consumption of the load for each phase and the total for three phases.
UZ2 allows you to perform the following functions:

• measurement and display of effective or peak voltage value
• measurement and display of the effective or peak value of the current consumption
• recalculation and display of power consumed by the load
• protective shutdown of the control starter in an emergency
• signal generation "Error"
• data exchange with a personal computer via the RS-485 interface

The protection devices are powered from any phase (which has voltage), the type of temperature control sensor is NTC10k. The current is measured by sensors of the DTKh type, with a unified output voltage signal of 0-10V.