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SG12RT-20 vs GW12KT-DT 10 of 18 identical Swap Change inverters

Sungrow SG12RT-20 vs GoodWe GW12KT-DT

Sungrow SG12RT-20
Sungrow
SG12RT-20
12 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
VS
GoodWe GW12KT-DT
GoodWe
GW12KT-DT
12 kW 97.7 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG12RT-20 leads on the differences that matter

The largest is max dc voltage: 100 V apart. 10 of 18 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
10 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 18 parameters
Parameter SG12RT-20 GW12KT-DT Difference
Max DC voltage 1100 V 1000 V 100 V apart
European efficiency 98.1 % 97.7 % 0.4 pp more efficient
Max AC power 12.00 kW 13.20 kW 1.20 kW apart
Weight 17.0 kg 18.0 kg 1.0 kg lighter
Max efficiency 98.5 % 98.3 % 0.2 pp more efficient
MPPT voltage range 160-1000 V 180-850 V 160-1000 V vs 180-850 V
Start voltage 180 V 160 V 20 V earlier start
Dimensions 480x370x195 mm 433x354x155 mm 480x370x195 mm vs 433x354x155 mm
02

Full specification

Parameter SG12RT-20 GW12KT-DT 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 400 V Same
Max AC current 20.0 A 20.3 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 1000 V 100 V apart
MPPT voltage range 160-1000 V 180-850 V 160-1000 V vs 180-850 V
Start voltage 180 V 160 V -20 V for GW12KT-DT
MPP trackers 2 2 Same
Strings per tracker 1 - Not published by GoodWe
Max input current per tracker 25.0 A - Not published by GoodWe
Efficiency
European efficiency 98.1 % 97.7 % +0.4 pp for SG12RT-20
Max efficiency 98.5 % 98.3 % +0.2 pp for SG12RT-20
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 18.0 kg -1.0 kg for SG12RT-20
Weight per kW 1.4 kg/kW 1.5 kg/kW Effectively the same
Dimensions 480x370x195 mm 433x354x155 mm 480x370x195 mm vs 433x354x155 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - Yes Not published by Sungrow
Ethernet - Yes Not published by Sungrow
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.