| Voltage at PCC | Required response time | Disconnection time | | :--- | :--- | :--- | | U < 195 V (0.85 p.u.) | Disconnect within 0.2 seconds | – | | 195 V ≤ U < 207 V (0.85–0.90 p.u.) | 10 seconds (limited power) | 10 seconds | | 207 V ≤ U ≤ 253 V (0.90–1.10 p.u.) | Normal operation | No disconnection | | 253 V < U ≤ 259.9 V (1.10–1.13 p.u.) | Reduce active power linearly | 0.2 seconds to disconnect | | U ≥ 264.5 V (1.15 p.u.) | Immediate disconnect | 0.1 seconds |

The VDE-AR-N 4105 standard typically covers:

If you're looking for a summary or overview in English without access to the standard, consider looking into:

If you need just the technical requirements without buying the full standard:

Final recommendation: For legal compliance (e.g., German market), purchase the official VDE‑AR‑N 4105:2018‑11 English PDF from VDE‑Verlag or Beuth Verlag. For preliminary study, use manufacturer application notes.

VDE-AR-N 4105 defines German technical rules for connecting power generation systems to the low-voltage network, with official English versions sold by the VDE Publishing House. While the 2018-11 version is the current standard, a full 2011 translation is available via unofficial sources, and provides official summaries. Generating Plants Connected To The VDE-AR-N - 4105 - Scribd

The document provides technical requirements for connecting power generation systems to low-voltage distribution networks. Documents - VDE FNN

Some public libraries offer access to technical standards for free or at a low cost, often through partnerships with standards organizations. These might not always have the most current version, but they can be a good resource.

For professionals who want to attempt a legitimate purchase, here is an optimized search string:

Google:

"VDE-AR-N 4105" "English" "PDF" -free -torrent site:vde-verlag.de

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Expected delivery: Immediate download link + invoice. VAT is applicable for EU customers (19% German VAT).

The short answer is no—not legally and not with version certainty. However, there are two permitted exceptions:

Warning: Avoid "PDF Drive" or "docplayer" links claiming to host the document. As of 2025, VDE aggressively enforces DMCA-style takedowns, and circulating a pirated copy can lead to legal notices from German law firms.