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

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

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

Full specification

Parameter 28K-A-US L2 / WIT 28K-AU-US L2 29.9K-XHU Difference
AC output
Rated AC power 28.00 kW 29.90 kW 1.90 kW apart
Max AC power 30.80 kW 29.90 kW 0.90 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage - 400 V Not published by Growatt
Max AC current 85.6 A 45.3 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 98.0 % 98.1 % Effectively the same
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 380~450V 200-900V 380~450V vs 200-900V
Max charge current - 165 A Not published by Growatt
Backup power - - Neither datasheet publishes this
Physical
Weight 120.0 kg 90.0 kg -30.0 kg for 29.9K-XHU
Weight per kW 4.3 kg/kW 3.0 kg/kW -1.3 kg/kW for 29.9K-XHU
Dimensions 820x1350x501 mm 585x920x320 mm 820x1350x501 mm vs 585x920x320 mm
Ingress protection IP66/NEMA 4X IP66 IP66/NEMA 4X vs IP66
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

More useful comparisons

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Growatt
Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2 vs Growatt MID 29.9K-HU
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Deye
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Fronius International
Growatt WIT 29.9K-XHU vs Fronius Verto 30.0 Plus
14 differences, the largest is max dc voltage
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Ginlong Solis
Growatt WIT 29.9K-XHU vs Ginlong Solis S6-EH3P30K-H
12 differences, the largest is max dc voltage
04

Written summary

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