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SG33CX-P2 vs GW33K-SDT-CN-G40 9 of 19 identical Swap Change inverters

Sungrow SG33CX-P2 vs GoodWe GW33K-SDT-CN-G40

Sungrow SG33CX-P2
Sungrow
SG33CX-P2
33 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
GoodWe GW33K-SDT-CN-G40
GoodWe
GW33K-SDT-CN-G40
33 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is max input current per tracker: 9.0 A more headroom. 9 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 19 parameters
Parameter SG33CX-P2 GW33K-SDT-CN-G40 Difference
Max input current per tracker 30.0 A 21.0 A 9.0 A more headroom
Max AC power 33.00 kW 36.30 kW 3.30 kW apart
Weight 38.0 kg 19.0 kg 19.0 kg lighter
Weight per kW 1.2 kg/kW 0.6 kg/kW 0.6 kg/kW lighter
Nominal AC voltage 400 V 380 V 20 V apart
Start voltage 200 V 160 V 40 V earlier start
MPP trackers 3 2 1 tracker more
Max efficiency 98.5 % 98.7 % 0.2 pp more efficient
MPPT voltage range 160-1000 V 140-1000 V 160-1000 V vs 140-1000 V
Dimensions 575x645x245 mm 413x530x211 mm 575x645x245 mm vs 413x530x211 mm
02

Full specification

Parameter SG33CX-P2 GW33K-SDT-CN-G40 Difference
AC output
Rated AC power 33.00 kW 33.00 kW Same
Max AC power 33.00 kW 36.30 kW 3.30 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 380 V 20 V apart
Max AC current 55.2 A 55.0 A Effectively the same
PV input
Max PV power 46.20 kW - Not published by GoodWe
DC/AC ratio 1.40 - Not published by GoodWe
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 160-1000 V 140-1000 V 160-1000 V vs 140-1000 V
Start voltage 200 V 160 V -40 V for GW33K-SDT-CN-G40
MPP trackers 3 2 +1 trackers for SG33CX-P2
Strings per tracker 2 2 Same
Max input current per tracker 30.0 A 21.0 A +9.0 A for SG33CX-P2
Efficiency
European efficiency 98.3 % - Not published by GoodWe
Max efficiency 98.5 % 98.7 % +0.2 pp for GW33K-SDT-CN-G40
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 38.0 kg 19.0 kg -19.0 kg for GW33K-SDT-CN-G40
Weight per kW 1.2 kg/kW 0.6 kg/kW -0.6 kg/kW for GW33K-SDT-CN-G40
Dimensions 575x645x245 mm 413x530x211 mm 575x645x245 mm vs 413x530x211 mm
Ingress protection IP66 IP66 Same
Cooling forced-air forced-air Same
Noise - 45 dB Not published by Sungrow
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - - Neither datasheet publishes this
Ethernet - - Neither datasheet publishes this
Arc fault protection Yes - Not published by GoodWe
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.