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Fronius Verto 17.5 vs SE17.3KUS 9 of 20 identical Swap Change inverters

Fronius Verto 17.5 vs SolarEdge SE17.3KUS

Fronius Verto 17.5
Fronius International
Fronius Verto 17.5
17.5 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SolarEdge SE17.3KUS
SolarEdge
SE17.3KUS
17.3 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is rated ac power: 0.20 kW apart. 9 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
9 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 20 parameters
Parameter Fronius Verto 17.5 SE17.3KUS Difference
Rated AC power 17.50 kW 17.30 kW 0.20 kW apart
Max DC voltage 1000 V 600 V 400 V apart
Max PV power 26.25 kW 30.27 kW 4.02 kW apart
DC/AC ratio 1.50 1.75 0.25 more oversizing headroom
Max AC power 17.50 kW 17.30 kW 0.20 kW apart
Noise 56 dB 62 dB 6 dB quieter
Nominal AC voltage 400 V 208 V 192 V apart
Max AC current 26.5 A 48.2 A 21.8 A apart
Ingress protection IP66 NEMA 3R IP66 vs NEMA 3R
MPPT voltage range 150-870 V 370-600 V 150-870 V vs 370-600 V
Dimensions 730x540x278 mm 808x317x300 mm 730x540x278 mm vs 808x317x300 mm
02

Full specification

Parameter Fronius Verto 17.5 SE17.3KUS Difference
AC output
Rated AC power 17.50 kW 17.30 kW 0.20 kW apart
Max AC power 17.50 kW 17.30 kW 0.20 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 208 V 192 V apart
Max AC current 26.5 A 48.2 A 21.8 A apart
PV input
Max PV power 26.25 kW 30.27 kW 4.02 kW apart
DC/AC ratio 1.50 1.75 +0.25 for SE17.3KUS
Max DC voltage 1000 V 600 V 400 V apart
MPPT voltage range 150-870 V 370-600 V 150-870 V vs 370-600 V
Start voltage 150 V - Not published by SolarEdge
MPP trackers 4 - Not published by SolarEdge
Strings per tracker 2 - Not published by SolarEdge
Max input current per tracker 28.0 A - Not published by SolarEdge
Efficiency
European efficiency 98.3 % - Not published by SolarEdge
Max efficiency 98.5 % - Not published by SolarEdge
CEC efficiency - 97.5 % Not published by Fronius International
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 35.2 kg 35.5 kg Effectively the same
Weight per kW 2.0 kg/kW 2.1 kg/kW Effectively the same
Dimensions 730x540x278 mm 808x317x300 mm 730x540x278 mm vs 808x317x300 mm
Ingress protection IP66 NEMA 3R IP66 vs NEMA 3R
Cooling forced-air forced-air Same
Noise 56 dB 62 dB -6 dB for Fronius Verto 17.5
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes Yes Same
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

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Fronius Verto 17.5 vs Growatt MID 17KTL3-X
14 differences, the largest is rated ac power
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.