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SG15KTL-M vs SG15RT-20 11 of 20 identical Swap Change inverters

Sungrow SG15KTL-M vs Sungrow SG15RT-20

Sungrow
SG15KTL-M
15 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG15RT-20
Sungrow
SG15RT-20
15 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG15RT-20 leads on the differences that matter

The largest is max input current per tracker: 3.0 A more headroom. 11 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
11 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 20 parameters
Parameter SG15KTL-M SG15RT-20 Difference
Max input current per tracker 22.0 A 25.0 A 3.0 A more headroom
Weight 24.0 kg 17.0 kg 7.0 kg lighter
European efficiency 98.3 % 98.1 % 0.2 pp more efficient
Weight per kW 1.6 kg/kW 1.1 kg/kW 0.5 kg/kW lighter
Start voltage 250 V 180 V 70 V earlier start
Max AC current 24.0 A 25.0 A 1.0 A apart
MPPT voltage range 200-1000 V 160-1000 V 200-1000 V vs 160-1000 V
Strings per tracker 2 1 1 string apart
Dimensions 485x370x210 mm 480x370x195 mm 485x370x210 mm vs 480x370x195 mm
02

Full specification

Parameter SG15KTL-M SG15RT-20 Difference
AC output
Rated AC power 15.00 kW 15.00 kW Same
Max AC power 15.00 kW 15.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 24.0 A 25.0 A 1.0 A apart
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 200-1000 V 160-1000 V 200-1000 V vs 160-1000 V
Start voltage 250 V 180 V -70 V for SG15RT-20
MPP trackers 2 2 Same
Strings per tracker 2 1 1 string apart
Max input current per tracker 22.0 A 25.0 A +3.0 A for SG15RT-20
Efficiency
European efficiency 98.3 % 98.1 % +0.2 pp for SG15KTL-M
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 24.0 kg 17.0 kg -7.0 kg for SG15RT-20
Weight per kW 1.6 kg/kW 1.1 kg/kW -0.5 kg/kW for SG15RT-20
Dimensions 485x370x210 mm 480x370x195 mm 485x370x210 mm vs 480x370x195 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.