Universal measuring device UMG 503
The UMG 503 is a digital integral measurement instrument which is suitable for measuring and recording electrical parameters (True-RMS) in low and medium voltage networks. The measurement is suitable for 1- and 3-phase systems with and without neutral conductors. At a mains frequency of 50 Hz, the scanning frequency of random measurements, which takes place twice per second, is 6.4 kHz. It is characterised by the high accuracy level, the compact construction and the measurement of harmonics in each external conductor.

In order to achieve the functional diversity of the universal measurement instrument, you would need around 13 analogue units such as an ampere meter, volt meter, volt meter switch, power meter (kW, kVA, kvar, cos ϕ), an effective and reactive energy meter (kWh/kvarh), a clock, a frequency meter and a harmonic analyser. This means that the planning, installation, wiring and storage costs are significantly reduced for the UMG 503 in comparison to analogue measuring instruments. Another advantage is the more accurate and better legibility. Selected measurement values and power failure/power return are recorded in a ring buffer with stamp time