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Technical data
Fronius Symo 3.0-3-S 3.7-3-S 4.5-3-S
Input data
MPP voltage range 200 - 800 V DC 250 - 800 V DC 300 - 800 V DC
Max. input voltage
(at 1,000 W/m² / -10 °C in an open circuit)
1000 V DC
Min. input voltage 150 V DC
Max. input current 16.0 A
Max. short circuit current of the solar mod-
ules (I
SC PV
)
24.0 A
Max. feedback current
4)
32 A (RMS)
5)
Output data
Nominal output power (P
nom
) 3000 W 3700 W 4500 W
Max. output power 3000 W 3700 W 4500 W
Nominal grid voltage 3~ NPE 400 / 230 V or 3~ NPE 380 / 220 V
Min. grid voltage 150 V / 260 V
Max. grid voltage 280 V / 485 V
Nominal output current at 220 / 230 V 4.5 / 4.3 A 5.6 / 5.4 A 6.8 / 6.5 A
Max. output current 9 A
Nominal frequency 50 / 60 Hz
1)
Total harmonic distortion < 3%
cos phi power factor 0.7 - 1 ind./cap.
2)
Power-up current pulse
6)
and duration 38 A / 2 ms
Max. output fault current per period 21.4 A / 1 ms
General data
Maximum efficiency 98%
European efficiency 96.2% 96.7% 97%
Overnight self-consumption < 0.7 W & < 3 VA
Cooling Controlled forced-air ventilation
Degree of protection IP 65
Dimensions h x w x d 645 x 431 x 204 mm
Weight 16 kg
Permissible ambient temperature - 25 °C - +60 °C
Permitted humidity 0 - 100%
EMC device class B
Overvoltage category DC / AC 2 / 3
Pollution level 2
Noise emission 58.3 dB(A) ref. 1pW
Protection devices
DC insulation measurement Integrated
Response to DC overload Operating point shift, power limitation
DC disconnector Integrated
RCMU Integrated
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