Primo Oversizing Technical Note

02/2011 1/1
Wels, January 28
th
2015
OVERSIZING FRONIUS PRIMO 3.8-1 208-240 – 8.2-1 208-240
Fronius International GmbH
hereby confirms that the inverters
/ Fronius Primo 3.8-1 208-240
/ Fronius Primo 5.0-1 208-240
/ Fronius Primo 6.0-1 208-240
/ Fronius Primo 7.6-1 208-240
/ Fronius Primo 8.2-1 208-240
can be oversized 50% above the rated nameplate capacity without voiding the manufacturer’s warranty,
provided that
/ String configuration adheres to the voltage and current window guidelines published in the operation manual
/ The open circuit voltage of the PV generator does not exceed the maximum input voltage of the inverter under
any circumstances (temperature, irradiance)
/ The maximum DC array short circuit current must not exceed 1,5 times the maximum DC input current of the
inverter
Fronius International GmbH
Solar Energy Division
Froniusplatz 1
A-4600 Wels
DI Thomas Mühlberger
Head of Solution Management