The state-of-the-art PQI-D Power Quality Interface for medium and high voltage networks is the main component of a system for carrying out all of the required measurement tasks in electrical networks. The PQI-D can be used as both a Power Quality Interface compliant to DIN EN 50160 and as a measurement device for measuring all physically defi ned measurement quantities. in AC electrical networks.

The component is primarily designed to monitor special reference quantities and quality agreements between the energy supplier and the customer, as well as to record, analyse and save the data.

Characteristics
Measuring the voltage quality according to DIN EN 50160
Class A device according to IEC 61000- 4-30
10.24 kHz sampling rate
Fault recording function up to 20 • In
Phase-phase and phase-earth measurements are possible simultaneously
Voltage measurement channels for U12, U23, U31, UNE
Additional measurement of currents I1, I2, I3, Io
Determination of over 3000 measurement values
Freely programmable limit values and outputs using isolated contacts
Four freely programmable LEDs
Freely programmable binary inputs to start and stop measurements remotely
Adoption of conventional measurement transducer functions; up to eight measurement quantities can be chosen and output via a mA signal.
Analysis of the data via a mySQL-supported database with the help of the WinPQI software package