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Fronius Primo 3.5-1 vs SOFAR 3.6KTLM-G3 5 of 20 identical Swap Change inverters

Fronius Primo 3.5-1 vs SOFAR 3.6KTLM-G3

Fronius Primo 3.5-1
Fronius International
Fronius Primo 3.5-1
3.5 kW 96.8 % euro Grid-tie
VS
SOFAR 3.6KTLM-G3
Sofar Solar
SOFAR 3.6KTLM-G3
3.6 kW 97.5 % euro Grid-tie
The verdict

SOFAR 3.6KTLM-G3 leads on the differences that matter

The largest is european efficiency: 0.7 pp more efficient. 5 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 15 differences
How alike are they
5 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 20 parameters
Parameter Fronius Primo 3.5-1 SOFAR 3.6KTLM-G3 Difference
European efficiency 96.8 % 97.5 % 0.7 pp more efficient
Max DC voltage 1000 V 600 V 400 V apart
Max input current per tracker 18.0 A 15.0 A 3.0 A more headroom
Rated AC power 3.50 kW 3.60 kW 0.10 kW apart
Weight 21.5 kg 10.0 kg 11.5 kg lighter
Weight per kW 6.1 kg/kW 2.8 kg/kW 3.4 kg/kW lighter
Max AC power 3.50 kW 3.68 kW 0.18 kW apart
Max efficiency 98.0 % 98.4 % 0.4 pp more efficient
Max operating temperature 55 °C 60 °C 5 °C more heat tolerant
MPPT voltage range 80-800 V 80-550 V 80-800 V vs 80-550 V
Max AC current 15.2 A 16.0 A 0.8 A apart
Start voltage 80 V 90 V 10 V earlier start
Strings per tracker 2 1 1 string apart
Dimensions 645x431x204 mm 344x349x164 mm 645x431x204 mm vs 344x349x164 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter Fronius Primo 3.5-1 SOFAR 3.6KTLM-G3 Difference
AC output
Rated AC power 3.50 kW 3.60 kW 0.10 kW apart
Max AC power 3.50 kW 3.68 kW 0.18 kW apart
Grid connection Single-phase Single-phase Same
Nominal AC voltage 230 V 230 V Same
Max AC current 15.2 A 16.0 A 0.8 A apart
PV input
Max PV power 5.30 kW - Not published by Sofar Solar
DC/AC ratio 1.51 - Not published by Sofar Solar
Max DC voltage 1000 V 600 V 400 V apart
MPPT voltage range 80-800 V 80-550 V 80-800 V vs 80-550 V
Start voltage 80 V 90 V -10 V for Fronius Primo 3.5-1
MPP trackers 2 2 Same
Strings per tracker 2 1 1 string apart
Max input current per tracker 18.0 A 15.0 A +3.0 A for Fronius Primo 3.5-1
Efficiency
European efficiency 96.8 % 97.5 % +0.7 pp for SOFAR 3.6KTLM-G3
Max efficiency 98.0 % 98.4 % +0.4 pp for SOFAR 3.6KTLM-G3
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 10.0 kg -11.5 kg for SOFAR 3.6KTLM-G3
Weight per kW 6.1 kg/kW 2.8 kg/kW -3.4 kg/kW for SOFAR 3.6KTLM-G3
Dimensions 645x431x204 mm 344x349x164 mm 645x431x204 mm vs 344x349x164 mm
Ingress protection IP65 IP65 Same
Cooling forced-air natural forced-air vs natural
Noise - - Neither datasheet publishes this
Max operating temperature 55 °C 60 °C +5 °C for SOFAR 3.6KTLM-G3
Connectivity and safety
Wi-Fi Yes - Not published by Sofar Solar
Ethernet Yes - Not published by Sofar Solar
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

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04

Written summary

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