Multifunction measuring device for measuring the parameters of three-phase alternating current. The power supply is taken from the measurement voltages L3-N.

The programmable digital panel meter ND10 is designed for measuring the parameters of symmetrically and asymmetrically loaded three-phase power networks with 4 wires, while simultaneously displaying the measured values and digitally transmitting their data. The device enables the control and optimization of electrical devices, industrial systems, and installations.

It allows for the measurement of: effective values of voltage and current, active, reactive, and apparent power, active and apparent energy, power factors, frequency, as well as 15-, 30-, and 60-minute average active power and THD. Additionally, the effective value of current in the neutral conductor is calculated from the vectors of the phase currents. The voltage and current values are multiplied by the set voltage and current transformation values of the measuring transformers. The power and energy displays take into account the programmed transformation values. The value of each measured quantity can be transmitted to a main system via the RS-485 interface. The relay outputs signal the exceeding of selected measured values. The pulse output is intended for monitoring the consumption of three-phase active energy. The device is equipped with detection and signaling for incorrect phase sequence.