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MID 40KTL3-X vs SG40CX 14 of 19 identical Swap Change inverters

Growatt MID 40KTL3-X vs Sungrow SG40CX

Growatt MID 40KTL3-X
Growatt
MID 40KTL3-X
40 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG40CX
Sungrow
SG40CX
40 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

MID 40KTL3-X leads on the differences that matter

The largest is weight: 27.5 kg lighter. 14 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

5 of 19 parameters
Parameter MID 40KTL3-X SG40CX Difference
Weight 30.5 kg 58.0 kg 27.5 kg lighter
Weight per kW 0.8 kg/kW 1.4 kg/kW 0.7 kg/kW lighter
European efficiency 98.5 % 98.3 % 0.2 pp more efficient
Max efficiency 98.8 % 98.6 % 0.2 pp more efficient
Dimensions 435x580x230 mm 645x782x310 mm 435x580x230 mm vs 645x782x310 mm
02

Full specification

Parameter MID 40KTL3-X SG40CX 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 400 V 400 V Same
Max AC current 66.6 A 66.9 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 200-1000 V 200-1000 V Same
Start voltage 250 V 250 V Same
MPP trackers - - Neither datasheet publishes this
Strings per tracker 2 2 Same
Max input current per tracker 26.0 A 26.0 A Same
Efficiency
European efficiency 98.5 % 98.3 % +0.2 pp for MID 40KTL3-X
Max efficiency 98.8 % 98.6 % +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 30.5 kg 58.0 kg -27.5 kg for MID 40KTL3-X
Weight per kW 0.8 kg/kW 1.4 kg/kW -0.7 kg/kW for MID 40KTL3-X
Dimensions 435x580x230 mm 645x782x310 mm 435x580x230 mm vs 645x782x310 mm
Ingress protection IP66 IP66 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 5 yrs - Not published by Sungrow
03

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Growatt MID 40KTL3-X vs Solis-40K
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Growatt MID 40KTL3-X vs Sungrow SG40CX-P2
10 differences, the largest is max input current per tracker
04

Written summary

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