Grid and PV system protection in accordance with VDE-AR-N 4105:2018-11

The AC interface switches integrated in Sunny Tripower X 60, Sunny Tripower X 25, Sunny Tripower Storage X and Sunny Tripower 125, can be used for the realization of grid and PV system protection in accordance with VDE-AR-N 4105:2018-11, Chapter 6.4.1 Method C, for 30 to 135 kW systems.

Requirements:

  • A suitable firmware version must be installed on the Sunny Tripower (see product manual)

  • A certain country data set must be set in the Sunny Tripower (see the product manual)

  • Depending on the device type, SMA I/O Modules must be installed (see product manual)

  • An external, central, and certified grid protection unit with alarm contact, designed as a potential-free break contact must be present in the system. The sum of switching and measuring time must be ≤ 100 ms.

  • Connection of the integrated digital inputs in the inverter or the I/O modules installed in all inverters with the external grid protection unit

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Example: PV system with interface switch integrated in the inverter

Additional information for the specific implementation can be found under the following link: Technical Information "Sunny Tripower CORE1- Simplified implementation of grid and PV system protection in PV Systems in accordance with VDE AR-N 4105:2018-11 and at www.SMA-Solar.com.

The manufacturer's declaration for the affected inverters can be found under the following link: Realization of grid and PV system protection in accordance with VDE-AR-N 4105:2018-11, Chapter 6.4.1 Method C, for 30 to 135 kW plants and in accordance with the FNN note "Simplified connection according to NELEV and EAAV" for systems from 135 to 270 kW" and at www.SMA-Solar.com.

    Grid and PV system protection according to VDE-AR-N 4105
    Simplified grid and PV system protection as per FNN notice