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GW40K-ET-10 vs WIT 40K-A-US L2 / WIT 40K-AU-US L2 6 of 12 identical Swap Change inverters

GoodWe GW40K-ET-10 vs Growatt WIT 40K-A-US L2 / WIT 40K-AU-US L2

GoodWe GW40K-ET-10
GoodWe
GW40K-ET-10
40 kW 97.8 % euro Hybrid
Open inverter page Datasheet PDF
VS
Growatt WIT 40K-A-US L2 / WIT 40K-AU-US L2
Growatt
WIT 40K-A-US L2 / WIT 40K-AU-US L2
40 kW Hybrid
Open inverter page Datasheet PDF
The verdict

GW40K-ET-10 leads on the differences that matter

The largest is weight: 58.0 kg lighter. 6 of 12 comparable parameters are identical, with 20 more left out because at least one datasheet does not publish them.

See all 6 differences
How alike are they
6 of 12 comparable
parameters are identical
identical differs not published
01

What actually differs

6 of 12 parameters
Parameter GW40K-ET-10 WIT 40K-A-US L2 / WIT 40K-AU-US L2 Difference
Weight 62.0 kg 120.0 kg 58.0 kg lighter
Weight per kW 1.6 kg/kW 3.0 kg/kW 1.4 kg/kW lighter
Max AC current 66.7 A 122.2 A 55.5 A apart
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
Battery voltage 200-800 V 380~450V 200-800 V vs 380~450V
Dimensions 660x520x260 mm 820x1350x501 mm 660x520x260 mm vs 820x1350x501 mm
02

Full specification

Parameter GW40K-ET-10 WIT 40K-A-US L2 / WIT 40K-AU-US L2 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 380 V - Not published by Growatt
Max AC current 66.7 A 122.2 A 55.5 A apart
PV input
Max PV power 60.00 kW - Not published by Growatt
DC/AC ratio 1.50 - Not published by Growatt
Max DC voltage 1000 V - Not published by Growatt
MPPT voltage range 165-850 V - Not published by Growatt
Start voltage 160 V - Not published by Growatt
MPP trackers - - Neither datasheet publishes this
Strings per tracker 2 - Not published by Growatt
Max input current per tracker 42.0 A - Not published by Growatt
Efficiency
European efficiency 97.8 % - Not published by Growatt
Max efficiency 98.1 % 98.0 % Effectively the same
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 200-800 V 380~450V 200-800 V vs 380~450V
Max charge current 100 A - Not published by Growatt
Backup power - - Neither datasheet publishes this
Physical
Weight 62.0 kg 120.0 kg -58.0 kg for GW40K-ET-10
Weight per kW 1.6 kg/kW 3.0 kg/kW -1.4 kg/kW for GW40K-ET-10
Dimensions 660x520x260 mm 820x1350x501 mm 660x520x260 mm vs 820x1350x501 mm
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
Cooling forced-air - Not published by Growatt
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Growatt
Ethernet - - Neither datasheet publishes this
Arc fault protection Yes - Not published by Growatt
Integrated DC switch Yes - Not published by Growatt
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.