Wels, 26
th
June 2013
RESIDUAL CURRENT DEVICE (RCD) FRONIUS GALVO
Fronius International GmbH
hereby informs, that according to IEC 60364-7-712:2002 respectively DIN VDE 0100-712:2006 a Residual
Current Device isn’t mandatory required for PV inverters.
However a residual current protection can be claimed, depending on the protection system of the particular
installation, the installation regulations or the requirements of the grid operator.
The inverters Fronius Galvo 1.5-1 – 3.1-1 do have a basic insulation between the DC- and AC side and prevent
possible residual currents from exceeding 6mA. Therefore the use of a Type A Residual Current Device is
permitted.
Typically the following combination of inverter and RCD is applicable:
/ Fronius Galvo 1.5-1 – 3.1-1 ≥30mA
Due to local circumstances, nuisance trippings of the used Residual Current Device can’t be excluded entirely.
In this case short-time delayed or selective Residual Current Devices, respectively Residual Current Devices
with higher rated nominal current or Residual Current Devices suitable for frequency converters can produce
relief.
Fronius International GmbH
Solar Electronics Division
Froniusplatz 1
A-4600 Wels
Ing. Prok. Martin Hackl
Head of Solar Electronics Division
01/2011 1/1
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