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SUN-18K-G02 vs Fronius Verto 17.5 8 of 23 identical Swap Change inverters

Deye SUN-18K-G02 vs Fronius Verto 17.5

Deye
SUN-18K-G02
18 kW 97.8 % euro 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

15 differences, and they point both ways

The largest is rated ac power: 0.50 kW apart. 8 of 23 comparable parameters are identical, with 9 more left out because at least one datasheet does not publish them.

See all 15 differences
How alike are they
8 of 23 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 23 parameters
Parameter SUN-18K-G02 Fronius Verto 17.5 Difference
Rated AC power 18.00 kW 17.50 kW 0.50 kW apart
European efficiency 97.8 % 98.3 % 0.5 pp more efficient
Max AC power 19.80 kW 17.50 kW 2.30 kW apart
Max PV power 21.60 kW 26.25 kW 4.65 kW apart
DC/AC ratio 1.20 1.50 0.30 more oversizing headroom
MPP trackers 2 4 2 trackers more
Weight 28.0 kg 35.2 kg 7.2 kg lighter
Noise 45 dB 56 dB 12 dB quieter
Weight per kW 1.6 kg/kW 2.0 kg/kW 0.5 kg/kW lighter
Max AC current 28.7 A 26.5 A 2.2 A apart
Start voltage 250 V 150 V 100 V earlier start
Max operating temperature 65 °C 60 °C 5 °C more heat tolerant
Ingress protection IP65 IP66 IP65 vs IP66
MPPT voltage range 200-850 V 150-870 V 200-850 V vs 150-870 V
Dimensions 520x400x240 mm 730x540x278 mm 520x400x240 mm vs 730x540x278 mm
02

Full specification

Parameter SUN-18K-G02 Fronius Verto 17.5 Difference
AC output
Rated AC power 18.00 kW 17.50 kW 0.50 kW apart
Max AC power 19.80 kW 17.50 kW 2.30 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 28.7 A 26.5 A 2.2 A apart
PV input
Max PV power 21.60 kW 26.25 kW 4.65 kW apart
DC/AC ratio 1.20 1.50 +0.30 for Fronius Verto 17.5
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 200-850 V 150-870 V 200-850 V vs 150-870 V
Start voltage 250 V 150 V -100 V for Fronius Verto 17.5
MPP trackers 2 4 +2 trackers for Fronius Verto 17.5
Strings per tracker - 2 Not published by Deye
Max input current per tracker - 28.0 A Not published by Deye
Efficiency
European efficiency 97.8 % 98.3 % +0.5 pp for Fronius Verto 17.5
Max efficiency 98.6 % 98.5 % Effectively the same
CEC efficiency - - Neither datasheet publishes this
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 28.0 kg 35.2 kg -7.2 kg for SUN-18K-G02
Weight per kW 1.6 kg/kW 2.0 kg/kW -0.5 kg/kW for SUN-18K-G02
Dimensions 520x400x240 mm 730x540x278 mm 520x400x240 mm vs 730x540x278 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 45 dB 56 dB -12 dB for SUN-18K-G02
Max operating temperature 65 °C 60 °C +5 °C for SUN-18K-G02
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection - Yes Not published by Deye
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.