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MID 40KTL3-X vs SG40CX-P2 14 of 24 identical Swap Change inverters

Growatt MID 40KTL3-X vs Sungrow SG40CX-P2

Growatt MID 40KTL3-X
Growatt
MID 40KTL3-X
40 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG40CX-P2
Sungrow
SG40CX-P2
40 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is max input current per tracker: 4.0 A more headroom. 14 of 24 comparable parameters are identical, with 8 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
14 of 24 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 24 parameters
Parameter MID 40KTL3-X SG40CX-P2 Difference
Max input current per tracker 26.0 A 30.0 A 4.0 A more headroom
Max PV power 60.00 kW 56.00 kW 4.00 kW apart
Weight 30.5 kg 40.0 kg 9.5 kg lighter
European efficiency 98.5 % 98.3 % 0.2 pp more efficient
Max efficiency 98.8 % 98.5 % 0.3 pp more efficient
DC/AC ratio 1.50 1.40 0.10 more oversizing headroom
Start voltage 250 V 200 V 50 V earlier start
Weight per kW 0.8 kg/kW 1.0 kg/kW 0.2 kg/kW lighter
MPPT voltage range 200-1000 V 160-1000 V 200-1000 V vs 160-1000 V
Dimensions 435x580x230 mm 575x645x245 mm 435x580x230 mm vs 575x645x245 mm
02

Full specification

Parameter MID 40KTL3-X SG40CX-P2 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 56.00 kW 4.00 kW apart
DC/AC ratio 1.50 1.40 +0.10 for MID 40KTL3-X
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 200 V -50 V for SG40CX-P2
MPP trackers - 4 Not published by Growatt
Strings per tracker 2 2 Same
Max input current per tracker 26.0 A 30.0 A +4.0 A for SG40CX-P2
Efficiency
European efficiency 98.5 % 98.3 % +0.2 pp for MID 40KTL3-X
Max efficiency 98.8 % 98.5 % +0.3 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 40.0 kg -9.5 kg for MID 40KTL3-X
Weight per kW 0.8 kg/kW 1.0 kg/kW -0.2 kg/kW for MID 40KTL3-X
Dimensions 435x580x230 mm 575x645x245 mm 435x580x230 mm vs 575x645x245 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 Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes Yes Same
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs - Not published by Sungrow
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.