
Wels, February 19h 2014
OVERVOLTAGE PROTECTION FRONIUS GALVO
Fronius International GmbH
hereby certifies that the inverters
/ Fronius Galvo 1.5-1 – 3.1-1
are designed according overvoltage category 2 on the DC side and according overvoltage category 3 on the AC
side as required by IEC/EN 62109-1. The inverters dispose of a passive protection against overvoltage located
on the AC and DC terminals, as well as an overvoltage-limiter, which help to prevent possible damage of the
inverter caused by an indirect lightning stroke.
From a manufacturer’s point of view, assuming the absence of any national or locals norms that require an
external overvoltage-protection, it is therefore allowed to install the inverters without any additional overvoltageprotection on the DC and AC side.
Fronius International GmbH
Solar Energy
Froniusplatz 1
A-4600 Wels
Ing. Prok. Martin Hackl
Head of Solar Energy
01/2011
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