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Fronius Primo 4.0-1 vs Solis-3P4K-4G 6 of 20 identical Swap Change inverters

Fronius Primo 4.0-1 vs Solis-3P4K-4G

Fronius Primo 4.0-1
Fronius International
Fronius Primo 4.0-1
4 kW 97.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Ginlong Solis
Solis-3P4K-4G
4 kW 97.8 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

Solis-3P4K-4G leads on the differences that matter

The largest is european efficiency: 0.8 pp more efficient. 6 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 14 differences
How alike are they
6 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

14 of 20 parameters
Parameter Fronius Primo 4.0-1 Solis-3P4K-4G Difference
European efficiency 97.0 % 97.8 % 0.8 pp more efficient
Max AC power 4.00 kW 4.40 kW 0.40 kW apart
Max PV power 6.00 kW 4.80 kW 1.20 kW apart
DC/AC ratio 1.50 1.20 0.30 more oversizing headroom
Weight 21.5 kg 17.3 kg 4.2 kg lighter
Weight per kW 5.4 kg/kW 4.3 kg/kW 1.0 kg/kW lighter
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 17.4 A 6.4 A 11.0 A apart
Start voltage 80 V 180 V 100 V earlier start
Max operating temperature 55 °C 60 °C 5 °C more heat tolerant
Max efficiency 98.1 % 98.3 % 0.2 pp more efficient
MPPT voltage range 80-800 V 160-850 V 80-800 V vs 160-850 V
Dimensions 645x431x204 mm 563x310x219 mm 645x431x204 mm vs 563x310x219 mm
02

Full specification

Parameter Fronius Primo 4.0-1 Solis-3P4K-4G Difference
AC output
Rated AC power 4.00 kW 4.00 kW Same
Max AC power 4.00 kW 4.40 kW 0.40 kW apart
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 17.4 A 6.4 A 11.0 A apart
PV input
Max PV power 6.00 kW 4.80 kW 1.20 kW apart
DC/AC ratio 1.50 1.20 +0.30 for Fronius Primo 4.0-1
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 80-800 V 160-850 V 80-800 V vs 160-850 V
Start voltage 80 V 180 V -100 V for Fronius Primo 4.0-1
MPP trackers 2 2 Same
Strings per tracker 2 - Not published by Ginlong Solis
Max input current per tracker 18.0 A - Not published by Ginlong Solis
Efficiency
European efficiency 97.0 % 97.8 % +0.8 pp for Solis-3P4K-4G
Max efficiency 98.1 % 98.3 % +0.2 pp for Solis-3P4K-4G
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 21.5 kg 17.3 kg -4.2 kg for Solis-3P4K-4G
Weight per kW 5.4 kg/kW 4.3 kg/kW -1.0 kg/kW for Solis-3P4K-4G
Dimensions 645x431x204 mm 563x310x219 mm 645x431x204 mm vs 563x310x219 mm
Ingress protection IP65 IP65 Same
Cooling forced-air - Not published by Ginlong Solis
Noise - - Neither datasheet publishes this
Max operating temperature 55 °C 60 °C +5 °C for Solis-3P4K-4G
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes - Not published by Ginlong Solis
Arc fault protection - Yes Not published by Fronius International
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.