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SG350HX-US vs MAX 320K-X 11 of 19 identical Swap Change inverters

Sungrow SG350HX-US vs Growatt MAX 320K-X

Sungrow SG350HX-US
Sungrow
SG350HX-US
320 kW Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MAX 320K-X
Growatt
MAX 320K-X
320 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG350HX-US leads on the differences that matter

The largest is mpp trackers: 6 trackers more. 11 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 19 parameters
Parameter SG350HX-US MAX 320K-X Difference
MPP trackers 12 6 6 trackers more
Max input current per tracker 40.0 A 80.0 A 40.0 A more headroom
Weight 122.0 kg 126.0 kg 4.0 kg lighter
Max AC current 254.0 A 230.9 A 23.1 A apart
Start voltage 550 V 500 V 50 V earlier start
Strings per tracker 2 5 3 strings apart
Ingress protection IP66 (NEMA 4X) IP66 IP66 (NEMA 4X) vs IP66
Dimensions 870x1165x361 mm 790x1145x371 mm 870x1165x361 mm vs 790x1145x371 mm
02

Full specification

Parameter SG350HX-US MAX 320K-X Difference
AC output
Rated AC power 320.00 kW 320.00 kW Same
Max AC power 352.00 kW 352.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 800 V 800 V Same
Max AC current 254.0 A 230.9 A 23.1 A apart
PV input
Max PV power - 480.00 kW Not published by Sungrow
DC/AC ratio - 1.50 Not published by Sungrow
Max DC voltage 1500 V 1500 V Same
MPPT voltage range 500-1500 V 500-1500 V Same
Start voltage 550 V 500 V -50 V for MAX 320K-X
MPP trackers 12 6 +6 trackers for SG350HX-US
Strings per tracker 2 5 3 strings apart
Max input current per tracker 40.0 A 80.0 A +40.0 A for MAX 320K-X
Efficiency
European efficiency - 98.5 % Not published by Sungrow
Max efficiency 99.0 % 99.0 % Same
CEC efficiency 98.5 % - Not published by Growatt
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 122.0 kg 126.0 kg -4.0 kg for SG350HX-US
Weight per kW 0.4 kg/kW 0.4 kg/kW Same
Dimensions 870x1165x361 mm 790x1145x371 mm 870x1165x361 mm vs 790x1145x371 mm
Ingress protection IP66 (NEMA 4X) IP66 IP66 (NEMA 4X) vs IP66
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 Not published by Sungrow
Ethernet - - Neither datasheet publishes this
Arc fault protection - Yes Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty - 5 yrs Not published by Sungrow
03

More useful comparisons

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Sungrow SG350HX-US vs GoodWe GW320K-UT
6 differences, the largest is mpp trackers
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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.