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SG12RT-20 vs GWT12K-SDT-30 (SDT G3 series) 10 of 19 identical Swap Change inverters

Sungrow SG12RT-20 vs GoodWe GWT12K-SDT-30 (SDT G3 series)

Sungrow SG12RT-20
Sungrow
SG12RT-20
12 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
VS
GoodWe GWT12K-SDT-30 (SDT G3 series)
GoodWe
GWT12K-SDT-30 (SDT G3 series)
12 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

SG12RT-20 leads on the differences that matter

The largest is max input current per tracker: 3.0 A more headroom. 10 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

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

What actually differs

9 of 19 parameters
Parameter SG12RT-20 GWT12K-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 12.00 kW 13.20 kW 1.20 kW apart
Weight 17.0 kg 15.5 kg 1.5 kg lighter
Nominal AC voltage 400 V 380 V 20 V apart
Ingress protection IP65 IP66 IP65 vs IP66
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 SG12RT-20 GWT12K-SDT-30 (SDT G3 series) Difference
AC output
Rated AC power 12.00 kW 12.00 kW Same
Max AC power 12.00 kW 13.20 kW 1.20 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 380 V 20 V apart
Max AC current 20.0 A 20.0 A 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 GWT12K-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 SG12RT-20
Efficiency
European efficiency 98.1 % - Not published by GoodWe
Max efficiency 98.5 % 98.5 % 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 15.5 kg -1.5 kg for GWT12K-SDT-30 (SDT G3 series)
Weight per kW 1.4 kg/kW 1.3 kg/kW Effectively the same
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

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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.