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29.9K-XHU vs 28K-A-US L2 / WIT 28K-AU-US L2 4 of 12 identical Swap Change inverters

Growatt WIT 29.9K-XHU vs Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2

Growatt WIT 29.9K-XHU
Growatt
WIT 29.9K-XHU
29.9 kW Hybrid
Open inverter page Datasheet PDF
VS
Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2
Growatt
WIT 28K-A-US L2 / WIT 28K-AU-US L2
28 kW Hybrid
Open inverter page Datasheet PDF
The verdict

29.9K-XHU leads on the differences that matter

The largest is rated ac power: 1.90 kW apart. 4 of 12 comparable parameters are identical, with 20 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
4 of 12 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 12 parameters
Parameter 29.9K-XHU 28K-A-US L2 / WIT 28K-AU-US L2 Difference
Rated AC power 29.90 kW 28.00 kW 1.90 kW apart
Max AC power 29.90 kW 30.80 kW 0.90 kW apart
Weight 90.0 kg 120.0 kg 30.0 kg lighter
Weight per kW 3.0 kg/kW 4.3 kg/kW 1.3 kg/kW lighter
Max AC current 45.3 A 85.6 A 40.3 A apart
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
Battery voltage 200-900V 380~450V 200-900V vs 380~450V
Dimensions 585x920x320 mm 820x1350x501 mm 585x920x320 mm vs 820x1350x501 mm
02

Full specification

Parameter 29.9K-XHU 28K-A-US L2 / WIT 28K-AU-US L2 Difference
AC output
Rated AC power 29.90 kW 28.00 kW 1.90 kW apart
Max AC power 29.90 kW 30.80 kW 0.90 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V - Not published by Growatt
Max AC current 45.3 A 85.6 A 40.3 A apart
PV input
Max PV power 59.80 kW - Not published by Growatt
DC/AC ratio 2.00 - Not published by Growatt
Max DC voltage 1100 V - Not published by Growatt
MPPT voltage range 180-1000 V - Not published by Growatt
Start voltage 195 V - Not published by Growatt
MPP trackers 4 - Not published by Growatt
Strings per tracker 2 - Not published by Growatt
Max input current per tracker 40.0 A - Not published by Growatt
Efficiency
European efficiency - - Neither datasheet publishes this
Max efficiency 98.1 % 98.0 % Effectively the same
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 200-900V 380~450V 200-900V vs 380~450V
Max charge current 165 A - Not published by Growatt
Backup power - - Neither datasheet publishes this
Physical
Weight 90.0 kg 120.0 kg -30.0 kg for 29.9K-XHU
Weight per kW 3.0 kg/kW 4.3 kg/kW -1.3 kg/kW for 29.9K-XHU
Dimensions 585x920x320 mm 820x1350x501 mm 585x920x320 mm vs 820x1350x501 mm
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
Cooling forced-air - Not published by Growatt
Noise 55 dB - Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Growatt
Ethernet Yes - Not published by Growatt
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch - - Neither datasheet publishes this
Warranty
Warranty 5 yrs - Not published by Growatt
03

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Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2 vs Growatt WT 28K-H-US L2 / WT 28K-HU-US L2
6 differences, the largest is max ac power
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.