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SG333HX vs MAX 320K-X 10 of 20 identical Swap Change inverters

Sungrow SG333HX vs Growatt MAX 320K-X

Sungrow SG333HX
Sungrow
SG333HX
333 kW 98.8 % euro 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

SG333HX leads on the differences that matter

The largest is rated ac power: 13.00 kW apart. 10 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
10 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 20 parameters
Parameter SG333HX MAX 320K-X Difference
Rated AC power 333.00 kW 320.00 kW 13.00 kW apart
MPP trackers 12 6 6 trackers more
Max input current per tracker 40.0 A 80.0 A 40.0 A more headroom
Max AC power 333.00 kW 352.00 kW 19.00 kW apart
Weight 116.0 kg 126.0 kg 10.0 kg lighter
European efficiency 98.8 % 98.5 % 0.3 pp more efficient
Max AC current 240.5 A 230.9 A 9.6 A apart
Start voltage 550 V 500 V 50 V earlier start
Strings per tracker 2 5 3 strings apart
Dimensions 870x1136x361 mm 790x1145x371 mm 870x1136x361 mm vs 790x1145x371 mm
02

Full specification

Parameter SG333HX MAX 320K-X Difference
AC output
Rated AC power 333.00 kW 320.00 kW 13.00 kW apart
Max AC power 333.00 kW 352.00 kW 19.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 800 V 800 V Same
Max AC current 240.5 A 230.9 A 9.6 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 SG333HX
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 98.8 % 98.5 % +0.3 pp for SG333HX
Max efficiency 99.0 % 99.0 % Same
CEC efficiency - - Neither datasheet publishes this
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 116.0 kg 126.0 kg -10.0 kg for SG333HX
Weight per kW 0.3 kg/kW 0.4 kg/kW Effectively the same
Dimensions 870x1136x361 mm 790x1145x371 mm 870x1136x361 mm vs 790x1145x371 mm
Ingress protection IP66 IP66 Same
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

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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.