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

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

GoodWe GWT8K-SDT-30 (SDT G3 series)
GoodWe
GWT8K-SDT-30 (SDT G3 series)
8 kW Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG8.0RT-20
Sungrow
SG8.0RT-20
8 kW 98.0 % euro 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 GWT8K-SDT-30 (SDT G3 series) SG8.0RT-20 Difference
Max input current per tracker 22.0 A 25.0 A 3.0 A more headroom
Max AC power 8.80 kW 8.00 kW 0.80 kW apart
Weight 14.7 kg 17.0 kg 2.3 kg lighter
Nominal AC voltage 380 V 400 V 20 V apart
Ingress protection IP66 IP65 IP66 vs IP65
Weight per kW 1.8 kg/kW 2.1 kg/kW 0.3 kg/kW lighter
MPPT voltage range 140-1000 V 160-1000 V 140-1000 V vs 160-1000 V
Start voltage 160 V 180 V 20 V earlier start
Dimensions 392x491x204 mm 480x370x195 mm 392x491x204 mm vs 480x370x195 mm
Cooling natural forced-air natural vs forced-air
02

Full specification

Parameter GWT8K-SDT-30 (SDT G3 series) SG8.0RT-20 Difference
AC output
Rated AC power 8.00 kW 8.00 kW Same
Max AC power 8.80 kW 8.00 kW 0.80 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 380 V 400 V 20 V apart
Max AC current 13.4 A 13.3 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 140-1000 V 160-1000 V 140-1000 V vs 160-1000 V
Start voltage 160 V 180 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 22.0 A 25.0 A +3.0 A for SG8.0RT-20
Efficiency
European efficiency - 98.0 % Not published by GoodWe
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 14.7 kg 17.0 kg -2.3 kg for GWT8K-SDT-30 (SDT G3 series)
Weight per kW 1.8 kg/kW 2.1 kg/kW -0.3 kg/kW for GWT8K-SDT-30 (SDT G3 series)
Dimensions 392x491x204 mm 480x370x195 mm 392x491x204 mm vs 480x370x195 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling natural forced-air natural vs forced-air
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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GoodWe GWT8K-SDT-30 (SDT G3 series) vs Growatt MOD 8KTL3-X2(Pro)
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Sungrow SG8.0RT-20 vs Ginlong Solis S6-GR3P-8K02-NV-ND
8 differences, the largest is max input current per tracker
04

Written summary

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