Skip to main content
MAX 320K-X vs SG333HX 10 of 20 identical Swap Change inverters

Growatt MAX 320K-X vs Sungrow SG333HX

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

Full specification

Parameter MAX 320K-X SG333HX Difference
AC output
Rated AC power 320.00 kW 333.00 kW 13.00 kW apart
Max AC power 352.00 kW 333.00 kW 19.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 800 V 800 V Same
Max AC current 230.9 A 240.5 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 500 V 550 V -50 V for MAX 320K-X
MPP trackers 6 12 +6 trackers for SG333HX
Strings per tracker 5 2 3 strings apart
Max input current per tracker 80.0 A 40.0 A +40.0 A for MAX 320K-X
Efficiency
European efficiency 98.5 % 98.8 % +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 126.0 kg 116.0 kg -10.0 kg for SG333HX
Weight per kW 0.4 kg/kW 0.3 kg/kW Effectively the same
Dimensions 790x1145x371 mm 870x1136x361 mm 790x1145x371 mm vs 870x1136x361 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

More useful comparisons

Open all inverters
Same type, similar size
Sungrow
Growatt MAX 320K-X vs Sungrow SG320HX
7 differences, the largest is mpp trackers
Same type, similar size
Sungrow
Growatt MAX 320K-X vs Sungrow SG350HX-US
8 differences, the largest is mpp trackers
Same type, similar size
GoodWe
Growatt MAX 320K-X vs GoodWe GW320K-UT
7 differences, the largest is mpp trackers
Same type, similar size
Growatt
Sungrow SG333HX vs Growatt MAX 333K-X
8 differences, the largest is mpp trackers
Same type, similar size
SolarEdge
Sungrow SG333HX vs SolarEdge TerraMax Inverter SE330K
6 differences, the largest is rated ac power
Same type, similar size
Sofar Solar
Sungrow SG333HX vs SOFAR 330KTLX0
7 differences, the largest is rated 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.