Evaluation and Characterization of Direct Current Emissions caused by Inverters in the Distribution Grids

Posted by Neo Messtechnik
On 16. January 2026

As power electronics multiply in our grids, DC emissions create invisible problems. The challenge: measuring them requires precision most equipment simply doesn't have.

2D and 3D Visualisation of GRID IMPEDANCE up to 150 kHz

Posted by Harald
On 17. March 2025

UPDATE: In the last month we developed a new Grid Impedance Data Analysing Tool. It is possible to show and present the measured data over the day or week. 3D-Plot Impedance and Phase up to 150 kHz: 2D-Plot Impedance up to 150 kHz: Where can I get more information? Austria Switzerland South Korea China Your […]

Impact of Electrical Equipment on Frequency-Dependent Grid Impedance up to 150 kHz

Posted by Harald
On 18. February 2025

Direct current charging stations for electric vehicles or photovoltaic inverters or heat pumps use active power electronics to convert alternating current to direct current. High switching frequencies (IGBT) are used for the DC or AC conversion in order to achieve the lowest possible switching loss and therefore the highest possible efficiency. Switching frequencies of 10 […]

Superharmonic disturbances in the distribution grid – New video

Posted by Neo Messtechnik
On 11. December 2024

The frequency ranges of superharmonic voltages and currents are only considered to a limited extent or limited in the applicable power quality standards for the distribution grid. In fact, however, they occur mainly in connection with feeders or also charging stations and lead to disturbances in the grid.In this video, we measure and evaluate superharmonic […]

Noninvasive Measurement of the network impedance for power quality assessment

Posted by Neo Messtechnik
On 16. August 2024

Abstract Due to a continuous increase in DC loads with power supplies, frequency converters for power and speed control or other non-linear loads, the harmonic levels in a network can increase to such an extent that a disturbance or an impermissible stress on other components occurs. Already in the planning phase it is therefore useful […]

Power Quality Measurements in all voltage levels of the energy utilities up to 150 kHz – Is it possible?

Posted by Neo Messtechnik
On 14. August 2024

A reliable energy supply has meanwhile become an important location factor for many companies. While power failures and voltage fluctuations were among the most important parameters of supply quality in the past, voltage transients and voltage harmonics are becoming more and more important. This is mainly due to the increasing number of non-linear loads and […]

Kommunikation im Verteilnetz: Fernwirktechnik für digitale Trafostationen – Teil 1 von 3

Posted by Neo Messtechnik
On 14. August 2024

In diesem Youtube-Video erklärt der GRID-EXPERTE von Rauwolf Etec GmbH wie digitale Trafostationen funktionieren und wie sie mit der Netzleitstelle kommunizieren. Dafür wir in der Praxis die Fernwirktechnik eingesetzt. Where can I get more information? Austria Switzerland South Korea China Your NEO Messtechnik Experts

Gibt es Vorgaben bezüglich der Power-Quality für Erzeugungsanlagen?

Posted by Neo Messtechnik
On 14. August 2024

In diesem Video vom GRID-EXPERTEN der Firma Rauwolf Etec GmbH wird das Thema der Power Quality und EMV Anforderungen von Erzeugungsanlagen erklärt. Wussten Sie, dass diese Firma den PQA8000H von NEO Messtechnik für Messdienstleistungen verwendet? Where can I get more information? Austria Switzerland South Korea China Your NEO Messtechnik Experts

Acoustic Partial Discharge- “Measurement” during Operation

Posted by Neo Messtechnik
On 8. August 2024

Acoustic partial discharge measurement during the operation of high-voltage lines or other equipment is now also possible with NEO Messtechnik. For this purpose, we have both an acoustic partial discharge camera and a UV light-based camera in our equipment. Further information can be obtained in the article by Hubert Göbel GmbH. Acoustic Partial Discharge Measurement […]

Unbalance of single-phase charging stations

Posted by Harald
On 15. July 2024

If an electric vehicle is charged at home some chargers operate in single phase mode.Some charging stations allow single-phase charging above the single-phase unbalanced load current limit.According to TOR the single phase current is limited with 16A in Austria and 20A (VDE-standard) in Germany. Different voltage levels on the three phases and a shifted neutral […]