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SUN-40K-G-LV vs SG40CX-P2 9 of 24 identical Swap Change inverters

Deye SUN-40K-G-LV vs Sungrow SG40CX-P2

Deye
SUN-40K-G-LV
40 kW 98.3 % 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

15 differences, and they point both ways

The largest is max dc voltage: 300 V apart. 9 of 24 comparable parameters are identical, with 8 more left out because at least one datasheet does not publish them.

See all 15 differences
How alike are they
9 of 24 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 24 parameters
Parameter SUN-40K-G-LV SG40CX-P2 Difference
Max DC voltage 800 V 1100 V 300 V apart
Max input current per tracker 40.0 A 30.0 A 10.0 A more headroom
Max PV power 52.00 kW 56.00 kW 4.00 kW apart
Weight 60.0 kg 40.0 kg 20.0 kg lighter
Weight per kW 1.5 kg/kW 1.0 kg/kW 0.5 kg/kW lighter
Nominal AC voltage 220 V 400 V 180 V apart
Max AC current 115.5 A 66.9 A 48.6 A apart
Start voltage 250 V 200 V 50 V earlier start
Max operating temperature 65 °C 60 °C 5 °C more heat tolerant
DC/AC ratio 1.30 1.40 0.10 more oversizing headroom
Max efficiency 98.7 % 98.5 % 0.2 pp more efficient
Ingress protection IP65 IP66 IP65 vs IP66
MPPT voltage range 200-700 V 160-1000 V 200-700 V vs 160-1000 V
Strings per tracker 1 2 1 string apart
Dimensions 575x700x297 mm 575x645x245 mm 575x700x297 mm vs 575x645x245 mm
02

Full specification

Parameter SUN-40K-G-LV 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 220 V 400 V 180 V apart
Max AC current 115.5 A 66.9 A 48.6 A apart
PV input
Max PV power 52.00 kW 56.00 kW 4.00 kW apart
DC/AC ratio 1.30 1.40 +0.10 for SG40CX-P2
Max DC voltage 800 V 1100 V 300 V apart
MPPT voltage range 200-700 V 160-1000 V 200-700 V vs 160-1000 V
Start voltage 250 V 200 V -50 V for SG40CX-P2
MPP trackers 4 4 Same
Strings per tracker 1 2 1 string apart
Max input current per tracker 40.0 A 30.0 A +10.0 A for SUN-40K-G-LV
Efficiency
European efficiency 98.3 % 98.3 % Same
Max efficiency 98.7 % 98.5 % +0.2 pp for SUN-40K-G-LV
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 60.0 kg 40.0 kg -20.0 kg for SG40CX-P2
Weight per kW 1.5 kg/kW 1.0 kg/kW -0.5 kg/kW for SG40CX-P2
Dimensions 575x700x297 mm 575x645x245 mm 575x700x297 mm vs 575x645x245 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 55 dB - Not published by Sungrow
Max operating temperature 65 °C 60 °C +5 °C for SUN-40K-G-LV
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection - Yes Not published by Deye
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.