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Document phase switching with load management #907

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Oct 24, 2025
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Document phase switching with load management #907

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11 changes: 10 additions & 1 deletion docs/features/loadmanagement.mdx
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Expand Up @@ -140,6 +140,16 @@ Für die Umsetzung von Regelanweisungen durch den Netzbetreiber kann der HEMS-Me
Weitere Informationen findest du unter [§ 14a EnWG & SteuVE](./14a-enwg-steuve).
:::

## Phasenumschaltung

Hast du eine Wallbox mit automatischer Phasenumschaltung (1P/3P), nutzt evcc diese, um die Grenzwerte einzuhalten.
Reicht die verfügbare Leistung nicht für 3-phasiges Laden, schaltet evcc automatisch auf 1-phasig um.

Dies gilt auch für Schnellladen und planbasiertes Laden.
Wenn z. B. durch Lastmanagement nur noch 3,5 kW verfügbar sind, wird auf 1-phasiges Laden (ab 1,4 kW) umgeschaltet, statt die Ladung zu pausieren.

**Voraussetzung:** Die Wallbox muss Phasenumschaltung unterstützen.

## Einschränkungen

:::info
Expand All @@ -149,4 +159,3 @@ Private Nutzung mit kleineren Installationen wird kostenlos bleiben.

- Die aktuellen Werte und Grenzen der einzelnen Schaltkreise werden auf der Konfigurationsseite im UI angezeigt. Die Visualisierung am Ladepunkt ist in Planung.
- `priority` Einstellungen am Ladepunkt werden noch nicht berücksichtigt.
- Lastmanagement wird nicht durch die Ladeplanung berücksichtigt.
13 changes: 11 additions & 2 deletions i18n/en/docusaurus-plugin-content-docs/current/features/loadmanagement.mdx
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Expand Up @@ -138,6 +138,16 @@ The HEMS mechanism can be used to implement control requests from the grid opera
For more information, see [§ 14a EnWG & SteuVE](./14a-enwg-steuve).
:::

## Phase Switching

For chargers with automatic phase switching (1P/3P), load management can use the switching capability to charge within the configured limits.
When available power is insufficient for 3-phase charging, evcc automatically switches to 1-phase charging.

This applies to fast charging and plan-based charging as well.
For example, if load management limits available power to 3.5 kW, evcc switches to 1-phase charging (from 1.4 kW) instead of pausing the charge.

**Requirement:** The charger must support phase switching.

## Restrictions

:::info
Expand All @@ -147,5 +157,4 @@ Private use with smaller installations will remain free of charge.


- Current values and limits of individual circuits are displayed on the configuration page in the UI. Visualization at the charging point is planned.
- `priority` settings at the charging point are not yet taken into account.
- Charging planning currently ignores Load Management, so reduced charging speeds due to load limits could lead to missing the charge target.
- `priority` settings at the charging point are not yet taken into account.