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SG40CX-P3-CN vs MID 40KTL3-X 10 of 18 identical Swap Change inverters

Sungrow SG40CX-P3-CN vs Growatt MID 40KTL3-X

Sungrow SG40CX-P3-CN
Sungrow
SG40CX-P3-CN
40 kW Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MID 40KTL3-X
Growatt
MID 40KTL3-X
40 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

8 differences, and they point both ways

The largest is max input current per tracker: 14.0 A more headroom. 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 SG40CX-P3-CN MID 40KTL3-X Difference
Max input current per tracker 40.0 A 26.0 A 14.0 A more headroom
Weight 40.0 kg 30.5 kg 9.5 kg lighter
Nominal AC voltage 380 V 400 V 20 V apart
Start voltage 200 V 250 V 50 V earlier start
Max efficiency 98.6 % 98.8 % 0.2 pp more efficient
Weight per kW 1.0 kg/kW 0.8 kg/kW 0.2 kg/kW lighter
MPPT voltage range 160-1000 V 200-1000 V 160-1000 V vs 200-1000 V
Dimensions 595x645x245 mm 435x580x230 mm 595x645x245 mm vs 435x580x230 mm
02

Full specification

Parameter SG40CX-P3-CN MID 40KTL3-X Difference
AC output
Rated AC power 40.00 kW 40.00 kW Same
Max AC power 44.00 kW 44.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 380 V 400 V 20 V apart
Max AC current 66.9 A 66.6 A Effectively the same
PV input
Max PV power - 60.00 kW Not published by Sungrow
DC/AC ratio - 1.50 Not published by Sungrow
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 200 V 250 V -50 V for SG40CX-P3-CN
MPP trackers 4 - Not published by Growatt
Strings per tracker 2 2 Same
Max input current per tracker 40.0 A 26.0 A +14.0 A for SG40CX-P3-CN
Efficiency
European efficiency - 98.5 % Not published by Sungrow
Max efficiency 98.6 % 98.8 % +0.2 pp for MID 40KTL3-X
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 40.0 kg 30.5 kg -9.5 kg for MID 40KTL3-X
Weight per kW 1.0 kg/kW 0.8 kg/kW -0.2 kg/kW for MID 40KTL3-X
Dimensions 595x645x245 mm 435x580x230 mm 595x645x245 mm vs 435x580x230 mm
Ingress protection IP66 IP66 Same
Cooling forced-air forced-air Same
Noise 60 dB - Not published by Growatt
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 - 5 yrs Not published by Sungrow
03

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5 differences, the largest is weight
04

Written summary

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