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All articles of topic EMC

Behind every working solar park is no small amount of painstaking cable management

New catalogue from EMC-direct gathers the ground-mount essentials

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The C-parts specialist has published its 2026 photovoltaics catalogue, spanning 138 pages and covering cable management, connectors and tooling for utility-scale installations across Europe.

Getting to the crux of the crimp – careless work could render the best system at risk

EMC-direct on DC connectors: crimp right or risk failure

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The quality of plug connections is critical to safety, efficiency and longevity. Even minor crimping errors can have serious consequences. Follow these tips to ensure correct installation.

The jaws of a certified crimper deliver tonnes of force – enough to make or break a 25-year solar installation.

Crimping matters – how to get DC cabling right

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Correct DC connections are critical for long-term performance and safety in solar installations. From the right choice of connectors to professional crimping tools, EMC-direct highlights the best practices to boost reliability in the field.

SMA CEO Jürgen Reinert (right), SMA Finance Director Ulrich Hadding (left) and the state of Hesse's Minister of Economics Tarek Al-Wazir open the new SMA test centre for electromagnetic compatibility.
Inverters:

Hessian Minister of Economics Tarek Al-Wazir opens new SMA test centre

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SMA Chief Executive Officer Jürgen Reinert was yesterday joined by Hessian Minister of Economics Tarek Al-Wazir to inaugurate the new SMA EMC Test Centre.

Fitting the DC optimizers with ferrites on each of their wires usually helps to remedy the problem, but is costly and complicated.

Lawyers sending threatening letters

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In the final two-part article on what happens when DC optimizers on solar modules cause EMC issues, we show one case in Switzerland where an operator and an installer were left to their own devices (no pun intended): The manufacturer of the optimizers refused to take responsibility. A text-book example of how to alienate customers and markets. Heiko Schwarzburger

Fitting the DC optimizers with ferrites on each of their wires usually helps to remedy the problem, but is costly and complicated.

Service: insufficient!

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Over the course of the last few days, we have presented a number of articles on what happens when the DC optimizers in solar modules produce interference signals. In our last two-parter, we show one case in Switzerland where an operator and an installer were left to their own devices (no pun intended). Heiko Schwarzburger

If a neighbourhood has many PV systems, knowing the specific interference signature of one type of system makes the search much easier.

"Involving the legal system can be costly"

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In Switzerland, the Federal Office of Communications (OFCOM) analyses the sources of interference frequencies. It issues warnings to the operators of the solar installations concerned - until they are forced to shut down. In Part 2 of this interview with Heiko Schwarzburger, Emmanuel de Raemy of OFCOM Switzerland will go more into the legal ramifications of what happens when DC optimizers cause interference.

To be clear: The vast majority of solar systems involving DC optimizers work without any problems.

"Power adapters and PLC may interfere"

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In Switzerland, the Federal Office of Communications (OFCOM) analyses the sources of interference frequencies. It issues warnings to the operators of the solar installations concerned - until they are forced to shut down. In Part 1 of this interview with Heiko Schwarzburger, Emmanuel de Raemy of OFCOM Switzerland, explains the current state of affairs.