| INPUT DATA |
Fronius Symo 3.7-3-S |
Fronius Symo 3.7-3-M |
Max. input current
(Idc max 1 / Idc max 21)) |
16.0 A / 16.0 A |
|
Max. array short circuit current (MPP1/MPP21))
|
24.0 A / 24.0 A |
Min. input voltage
(Udc min) |
150 V |
Feed-in start voltage
(Udc start) |
200 V |
| Nominal input voltage (Udc,r) |
595 V |
Max. input voltage
(Udc max) |
1,000 V |
MPP voltage range
(Umpp min – Umpp max) |
250 - 800 V |
150 - 800 V |
| Number of MPP trackers |
1 |
2 |
| Number of DC connections |
3 |
2 + 2 |
| Max. PV generator output (Pdc max) |
7.4 kWpeak |
7.4 kWpeak |
| OUTPUT DATA |
|
|
| AC nominal output (Pac,r) |
3,700 W |
3,700 W |
| Max. output power |
3,700 VA |
3,700 VA |
AC output current
(Iac nom) |
5.3 A |
5.3 A |
| Grid connection (voltage range) |
3~NPE 400 V / 230 V or 3~NPE 380 V / 220 V (+20 % / -30 %) |
| Frequency (frequency range) |
50 Hz / 60 Hz (45 - 65 Hz) |
| Total harmonic distortion |
< 3 % |
| Power factor (cos φac,r) |
0.70 - 1 ind. / cap. |
0.85 - 1 ind. / cap. |
| GENERAL DATA |
|
|
Dimensions
(height x width x depth) |
645 x 431 x 204 mm |
| Weight |
16.0 kg |
19.9 kg |
| Degree of protection |
IP 65 |
| Protection class |
1 |
| Overvoltage category (DC / AC)2) |
2 / 3 |
| Night time consumption |
< 1 W |
| Inverter design |
Transformerless |
| Cooling |
Regulated air cooling |
| Installation |
Indoor and outdoor installation |
| Ambient temperature range |
-25 - +60 °C |
| Permitted humidity |
0 - 100 % |
| Max. altitude |
2,000 m / 3,400 m (unrestricted / restricted voltage range) |
| DC connection technology |
3x DC+ and 3x DC- screw terminals 2.5 - 16 mm² |
4x DC+ and 4x DC- screw terminals 2.5 - 16 mm² 3) |
| AC connection technology |
5-pin AC screw terminals 2.5 - 16 mm² |
5-pin AC screw terminals 2.5 - 16 mm² 3) |
| Certificates and compliance with standards |
ÖVE / ÖNORM E 8001-4-712, DIN V VDE 0126-1-1/A1, VDE AR N 4105, IEC 62109-1/-2, IEC 62116, IEC 61727, AS 3100, AS 4777-2, AS 4777-3, CER 06-190, G83/2, UNE 206007-1, SI 4777 1), CEI 0-211), NRS 097 |
| EFFICIENCY |
|
|
| Max. efficiency |
98.0 % |
| European efficiency (ηEU) |
96.7 % |
96.9 % |
| η at 5 % Pac,r4) |
83.4 / 86.4 / 80.6 % |
81.6 / 87.8 / 82.8 % |
| η at 10 % Pac,r4) |
90.1 / 92.5 / 88.7 % |
87.9 / 93.6 / 90.5 % |
| η at 20 % Pac,r4) |
93.7 / 95.7 / 93.6 % |
91.9 / 96.0 / 94.1 % |
| η at 25 % Pac,r4) |
94.5 / 96.4 / 94.7 % |
92.9 / 96.6 / 95.2 % |
| η at 30 % Pac,r4) |
95.0 / 96.7 / 95.4 % |
93.5 / 97.0 / 95.8 % |
| η at 50 % Pac,r4) |
96.9 / 97.6 / 96.7 % |
94.6 / 97.7 / 96.8 % |
| η at 75 % Pac,r4) |
96.2 / 97.8 / 97.3 % |
95.0 / 97.9 / 97.4 % |
| η at 100 % Pac,r4) |
96.2 / 98.0 / 97.5 % |
95.1 / 98.0 / 97.5 % |
| MPP adaption efficiency |
> 99.9 % |
| PROTECTIVE DEVICES |
|
|
| DC insulation measurement |
Yes |
| Overload behaviour |
Operating point shift, power limitation |
| DC disconnector |
Yes |
| Reverse polarity protection |
Yes |
| INTERFACES |
|
|
| WLAN / Ethernet LAN |
Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON) |
| 6 inputs and 4 digital in/out |
Interface to ripple control receiver |
| USB (type A socket)5) |
Datalogging, inverter update via USB flash drive |
| 2x RS422 (RJ45 socket)5) |
Fronius Solar Net, interface protocol |
| Signalling Output5) |
Energy management (floating relay output) |
| Datalogger and Webserver |
Included |
| External Input5) |
S0 meter connection / Evaluation of overvoltage protection |
| RS485 |
Modbus RTU SunSpec or meter connection |
