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SG20RT-20 vs SG20KTL-M 13 of 20 identical Swap Change inverters

Sungrow SG20RT-20 vs Sungrow SG20KTL-M

Sungrow SG20RT-20
Sungrow
SG20RT-20
20 kW 98.2 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow
SG20KTL-M
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG20RT-20 leads on the differences that matter

The largest is max input current per tracker: 3.0 A more headroom. 13 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 7 differences
How alike are they
13 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 20 parameters
Parameter SG20RT-20 SG20KTL-M Difference
Max input current per tracker 25.0 A 22.0 A 3.0 A more headroom
Weight 20.0 kg 24.0 kg 4.0 kg lighter
Start voltage 180 V 250 V 70 V earlier start
MPPT voltage range 160-1000 V 200-1000 V 160-1000 V vs 200-1000 V
Weight per kW 1.0 kg/kW 1.2 kg/kW 0.2 kg/kW lighter
Strings per tracker 1 2 1 string apart
Dimensions 480x370x195 mm 485x370x210 mm 480x370x195 mm vs 485x370x210 mm
02

Full specification

Parameter SG20RT-20 SG20KTL-M Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 20.00 kW 20.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 31.9 A 31.9 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 200-1000 V 160-1000 V vs 200-1000 V
Start voltage 180 V 250 V -70 V for SG20RT-20
MPP trackers 2 2 Same
Strings per tracker 1 2 1 string apart
Max input current per tracker 25.0 A 22.0 A +3.0 A for SG20RT-20
Efficiency
European efficiency 98.2 % 98.3 % Effectively the same
Max efficiency 98.6 % 98.6 % 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 20.0 kg 24.0 kg -4.0 kg for SG20RT-20
Weight per kW 1.0 kg/kW 1.2 kg/kW -0.2 kg/kW for SG20RT-20
Dimensions 480x370x195 mm 485x370x210 mm 480x370x195 mm vs 485x370x210 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 - - Neither datasheet publishes this
Ethernet - - Neither datasheet publishes this
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

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