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

SolarEdge SE17.3KUS vs Fronius Verto 17.5

SolarEdge SE17.3KUS
SolarEdge
SE17.3KUS
17.3 kW Grid-tie
Open inverter page Datasheet PDF
VS
Fronius Verto 17.5
Fronius International
Fronius Verto 17.5
17.5 kW 98.3 % euro 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 SE17.3KUS Fronius Verto 17.5 Difference
Rated AC power 17.30 kW 17.50 kW 0.20 kW apart
Max DC voltage 600 V 1000 V 400 V apart
Max PV power 30.27 kW 26.25 kW 4.02 kW apart
DC/AC ratio 1.75 1.50 0.25 more oversizing headroom
Max AC power 17.30 kW 17.50 kW 0.20 kW apart
Noise 62 dB 56 dB 6 dB quieter
Nominal AC voltage 208 V 400 V 192 V apart
Max AC current 48.2 A 26.5 A 21.8 A apart
Ingress protection NEMA 3R IP66 NEMA 3R vs IP66
MPPT voltage range 370-600 V 150-870 V 370-600 V vs 150-870 V
Dimensions 808x317x300 mm 730x540x278 mm 808x317x300 mm vs 730x540x278 mm
02

Full specification

Parameter SE17.3KUS Fronius Verto 17.5 Difference
AC output
Rated AC power 17.30 kW 17.50 kW 0.20 kW apart
Max AC power 17.30 kW 17.50 kW 0.20 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 208 V 400 V 192 V apart
Max AC current 48.2 A 26.5 A 21.8 A apart
PV input
Max PV power 30.27 kW 26.25 kW 4.02 kW apart
DC/AC ratio 1.75 1.50 +0.25 for SE17.3KUS
Max DC voltage 600 V 1000 V 400 V apart
MPPT voltage range 370-600 V 150-870 V 370-600 V vs 150-870 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 35.5 kg 35.2 kg Effectively the same
Weight per kW 2.1 kg/kW 2.0 kg/kW Effectively the same
Dimensions 808x317x300 mm 730x540x278 mm 808x317x300 mm vs 730x540x278 mm
Ingress protection NEMA 3R IP66 NEMA 3R vs IP66
Cooling forced-air forced-air Same
Noise 62 dB 56 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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04

Written summary

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