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A-US / WIT 75K-AU-US vs HU-US 9 of 15 identical Swap Change inverters

Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-HU-US

Growatt WIT 75K-A-US / WIT 75K-AU-US
Growatt
WIT 75K-A-US / WIT 75K-AU-US
75 kW Hybrid
Open inverter page Datasheet PDF
VS
Growatt WIT 75K-HU-US
Growatt
WIT 75K-HU-US
75 kW Hybrid
Open inverter page Datasheet PDF
The verdict

A-US / WIT 75K-AU-US leads on the differences that matter

The largest is max ac power: 7.50 kW apart. 9 of 15 comparable parameters are identical, with 17 more left out because at least one datasheet does not publish them.

See all 6 differences
How alike are they
9 of 15 comparable
parameters are identical
identical differs not published
01

What actually differs

6 of 15 parameters
Parameter A-US / WIT 75K-AU-US HU-US Difference
Max AC power 75.00 kW 82.50 kW 7.50 kW apart
Weight 120.0 kg 153.0 kg 33.0 kg lighter
Weight per kW 1.6 kg/kW 2.0 kg/kW 0.4 kg/kW lighter
Ingress protection NEMA/IP66 IP66/NEMA 4X NEMA/IP66 vs IP66/NEMA 4X
Battery voltage 750-1000 V 750-1000V for 3P3W / 820-1000V for 3P4W 750-1000 V vs 750-1000V for 3P3W / 820-1000V for 3P4W
Dimensions 1200x820x510 mm 1350x850x510 mm 1200x820x510 mm vs 1350x850x510 mm
02

Full specification

Parameter A-US / WIT 75K-AU-US HU-US Difference
AC output
Rated AC power 75.00 kW 75.00 kW Same
Max AC power 75.00 kW 82.50 kW 7.50 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 480 V 480 V Same
Max AC current 99.3 A 99.3 A Same
PV input
Max PV power - 156.00 kW Not published by Growatt
DC/AC ratio - 2.08 Not published by Growatt
Max DC voltage - 1100 V Not published by Growatt
MPPT voltage range - 180-800 V Not published by Growatt
Start voltage - 195 V Not published by Growatt
MPP trackers - - Neither datasheet publishes this
Strings per tracker - 2 Not published by Growatt
Max input current per tracker - 32.0 A Not published by Growatt
Efficiency
European efficiency - - Neither datasheet publishes this
Max efficiency - 98.2 % Not published by Growatt
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 750-1000 V 750-1000V for 3P3W / 820-1000V for 3P4W 750-1000 V vs 750-1000V for 3P3W / 820-1000V for 3P4W
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 120.0 kg 153.0 kg -33.0 kg for A-US / WIT 75K-AU-US
Weight per kW 1.6 kg/kW 2.0 kg/kW -0.4 kg/kW for A-US / WIT 75K-AU-US
Dimensions 1200x820x510 mm 1350x850x510 mm 1200x820x510 mm vs 1350x850x510 mm
Ingress protection NEMA/IP66 IP66/NEMA 4X NEMA/IP66 vs IP66/NEMA 4X
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet - - Neither datasheet publishes this
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch - - Neither datasheet publishes this
Warranty
Warranty 5 yrs 5 yrs Same
03

More useful comparisons

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Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-AU-US
7 differences, the largest is warranty
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Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-H-US / WIT 75K-HU-US
6 differences, the largest is warranty
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Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-A
5 differences, the largest is nominal ac voltage
04

Written summary

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