FLICKER INFORMATION
FRONIUS CL
Wels, February 3rd 2011
Fronius International GmbH
Flicker Values D
The inverter itself does not produce flicker relevant variations of the line current; start-up is made using
, PST and P
MAX
LT
a ramp function and does therefore not create relevant d
values.
max
Solar Power variations naturally lead to variations of the electric power fed into the grid, however these
variations are not significant for P
and PLT.
ST
Steady-State voltage change d
c
The maximum relative steady-state voltage change d
current and the reference impedance Z
given in EN 61000-3-3 (line impedance only, as there is no
REF
current in the neutral conductor).The permissible value for d
was calculated based on the measured line
c
is 3,3%. The result are given in table 1.
c
Steady state voltage change d
for the Fronius IG Plus inverter series according to
c
EN 61000-3-3
Inverter type Steady state voltage change d
c
Fronius CL 36.0 6,39 %1
Fronius CL 48.0 8,61 %1
Fronius CL 60.0 10,7 %1
Table 1
Note 1:
The permissible value for d
is 3,3 %, therefore the definition of the required mains impedance (Z
c
SYS
is necessary.
)
This is equal to a required 3-phase short circuit power S
at the point of common coupling,
SC,SYS
calculated in accordance with EN 61000-3-12. The corresponding values are given in table 2.
FLICKER INFORMATION
FRONIUS CL
Inverter type Mains Impedance Z
Fronius CL 36.0 145 mΩ 1096 kVA
Fronius CL 48.0 108 mΩ 1470 kVA
Fronius CL 60.0 87 mΩ 1830 kVA
Table 2
FRONIUS INTERNATIONAL GMBH
Solar Electronics Division
Froniusplatz 1
A-4600 Wels
DI Prok. Christoph Panhuber
Head of Solar Electronics Division
Short circuit power S
SYS
SC,SYS
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