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SG8.0RT-20 vs GWT8K-SDT-30 (SDT G3 series) 9 of 19 identical Swap Change inverters

Sungrow SG8.0RT-20 vs GoodWe GWT8K-SDT-30 (SDT G3 series)

Sungrow SG8.0RT-20
Sungrow
SG8.0RT-20
8 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
GoodWe GWT8K-SDT-30 (SDT G3 series)
GoodWe
GWT8K-SDT-30 (SDT G3 series)
8 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is max input current per tracker: 3.0 A more headroom. 9 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 19 parameters
Parameter SG8.0RT-20 GWT8K-SDT-30 (SDT G3 series) Difference
Max input current per tracker 25.0 A 22.0 A 3.0 A more headroom
Max AC power 8.00 kW 8.80 kW 0.80 kW apart
Weight 17.0 kg 14.7 kg 2.3 kg lighter
Nominal AC voltage 400 V 380 V 20 V apart
Ingress protection IP65 IP66 IP65 vs IP66
Weight per kW 2.1 kg/kW 1.8 kg/kW 0.3 kg/kW lighter
MPPT voltage range 160-1000 V 140-1000 V 160-1000 V vs 140-1000 V
Start voltage 180 V 160 V 20 V earlier start
Dimensions 480x370x195 mm 392x491x204 mm 480x370x195 mm vs 392x491x204 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter SG8.0RT-20 GWT8K-SDT-30 (SDT G3 series) Difference
AC output
Rated AC power 8.00 kW 8.00 kW Same
Max AC power 8.00 kW 8.80 kW 0.80 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 380 V 20 V apart
Max AC current 13.3 A 13.4 A Effectively the same
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 160-1000 V 140-1000 V 160-1000 V vs 140-1000 V
Start voltage 180 V 160 V -20 V for GWT8K-SDT-30 (SDT G3 series)
MPP trackers 2 2 Same
Strings per tracker 1 1 Same
Max input current per tracker 25.0 A 22.0 A +3.0 A for SG8.0RT-20
Efficiency
European efficiency 98.0 % - Not published by GoodWe
Max efficiency 98.5 % 98.6 % 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 17.0 kg 14.7 kg -2.3 kg for GWT8K-SDT-30 (SDT G3 series)
Weight per kW 2.1 kg/kW 1.8 kg/kW -0.3 kg/kW for GWT8K-SDT-30 (SDT G3 series)
Dimensions 480x370x195 mm 392x491x204 mm 480x370x195 mm vs 392x491x204 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air natural forced-air vs natural
Noise - 29 dB Not published by Sungrow
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - - Neither datasheet publishes this
Ethernet - - Neither datasheet publishes this
Arc fault protection - Yes Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

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Sungrow SG8.0RT-20 vs Growatt MOD 8KTL3-X2(Pro)
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GoodWe
Sungrow SG8.0RT-20 vs GoodWe GW8000-DT
6 differences, the largest is max dc voltage
04

Written summary

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