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SG40CX-P2 vs SE40K 9 of 21 identical Swap Change inverters

Sungrow SG40CX-P2 vs SolarEdge SE40K

Sungrow SG40CX-P2
Sungrow
SG40CX-P2
40 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SolarEdge SE40K
SolarEdge
SE40K
40 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

12 differences, and they point both ways

The largest is max dc voltage: 100 V apart. 9 of 21 comparable parameters are identical, with 11 more left out because at least one datasheet does not publish them.

See all 12 differences
How alike are they
9 of 21 comparable
parameters are identical
identical differs not published
01

What actually differs

12 of 21 parameters
Parameter SG40CX-P2 SE40K Difference
Max DC voltage 1100 V 1000 V 100 V apart
Max AC power 44.00 kW 40.00 kW 4.00 kW apart
Max PV power 56.00 kW 70.00 kW 14.00 kW apart
DC/AC ratio 1.40 1.75 0.35 more oversizing headroom
Weight 40.0 kg 32.0 kg 8.0 kg lighter
European efficiency 98.3 % 98.0 % 0.3 pp more efficient
Max efficiency 98.5 % 98.1 % 0.4 pp more efficient
Max AC current 66.9 A 48.2 A 18.7 A apart
Ingress protection IP66 IP65 IP66 vs IP65
MPPT voltage range 160-1000 V 680-1000 V 160-1000 V vs 680-1000 V
Weight per kW 1.0 kg/kW 0.8 kg/kW 0.2 kg/kW lighter
Dimensions 575x645x245 mm 558x328x273 mm 575x645x245 mm vs 558x328x273 mm
02

Full specification

Parameter SG40CX-P2 SE40K Difference
AC output
Rated AC power 40.00 kW 40.00 kW Same
Max AC power 44.00 kW 40.00 kW 4.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 66.9 A 48.2 A 18.7 A apart
PV input
Max PV power 56.00 kW 70.00 kW 14.00 kW apart
DC/AC ratio 1.40 1.75 +0.35 for SE40K
Max DC voltage 1100 V 1000 V 100 V apart
MPPT voltage range 160-1000 V 680-1000 V 160-1000 V vs 680-1000 V
Start voltage 200 V - Not published by SolarEdge
MPP trackers 4 - Not published by SolarEdge
Strings per tracker 2 - Not published by SolarEdge
Max input current per tracker 30.0 A - Not published by SolarEdge
Efficiency
European efficiency 98.3 % 98.0 % +0.3 pp for SG40CX-P2
Max efficiency 98.5 % 98.1 % +0.4 pp for SG40CX-P2
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 32.0 kg -8.0 kg for SE40K
Weight per kW 1.0 kg/kW 0.8 kg/kW -0.2 kg/kW for SE40K
Dimensions 575x645x245 mm 558x328x273 mm 575x645x245 mm vs 558x328x273 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling forced-air forced-air Same
Noise - 62 dB Not published by Sungrow
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 - 20 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.