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STP 125-70 (Sunny Tripower 125) vs MAX 125KTL3-X LV 15 of 22 identical Swap Change inverters

SMA Solar STP 125-70 (Sunny Tripower 125) vs Growatt MAX 125KTL3-X LV

SMA Solar
STP 125-70 (Sunny Tripower 125)
125 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MAX 125KTL3-X LV
Growatt
MAX 125KTL3-X LV
125 kW 98.4 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

MAX 125KTL3-X LV leads on the differences that matter

The largest is max input current per tracker: 2.0 A more headroom. 15 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.

See all 7 differences
How alike are they
15 of 22 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 22 parameters
Parameter STP 125-70 (Sunny Tripower 125) MAX 125KTL3-X LV Difference
Max input current per tracker 30.0 A 32.0 A 2.0 A more headroom
MPP trackers 12 10 2 trackers more
Weight 96.0 kg 84.0 kg 12.0 kg lighter
European efficiency 98.1 % 98.4 % 0.3 pp more efficient
Max AC current 181.1 A 198.5 A 17.4 A apart
Ingress protection IP65 IP66 IP65 vs IP66
Dimensions 795x1020x360 mm 640x970x345 mm 795x1020x360 mm vs 640x970x345 mm
02

Full specification

Parameter STP 125-70 (Sunny Tripower 125) MAX 125KTL3-X LV Difference
AC output
Rated AC power 125.00 kW 125.00 kW Same
Max AC power 125.00 kW 125.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 181.1 A 198.5 A 17.4 A apart
PV input
Max PV power 187.50 kW - Not published by Growatt
DC/AC ratio 1.50 - Not published by Growatt
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 180-1000 V 180-1000 V Same
Start voltage 200 V 195 V Effectively the same
MPP trackers 12 10 +2 trackers for STP 125-70 (Sunny Tripower 125)
Strings per tracker 2 2 Same
Max input current per tracker 30.0 A 32.0 A +2.0 A for MAX 125KTL3-X LV
Efficiency
European efficiency 98.1 % 98.4 % +0.3 pp for MAX 125KTL3-X LV
Max efficiency 98.4 % 98.5 % Effectively the 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 96.0 kg 84.0 kg -12.0 kg for MAX 125KTL3-X LV
Weight per kW 0.8 kg/kW 0.7 kg/kW Effectively the same
Dimensions 795x1020x360 mm 640x970x345 mm 795x1020x360 mm vs 640x970x345 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 71 dB - Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes - Not published by Growatt
Arc fault protection Yes - Not published by Growatt
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs 5 yrs Same
03

More useful comparisons

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Same type, similar size
Ginlong Solis
SMA Solar STP 125-70 (Sunny Tripower 125) vs Ginlong Solis S5-GC125K-HV
9 differences, the largest is european efficiency
Same type, similar size
Sungrow
SMA Solar STP 125-70 (Sunny Tripower 125) vs Sungrow SG125CX-P2
5 differences, the largest is max pv power
Same type, similar size
Sofar Solar
SMA Solar STP 125-70 (Sunny Tripower 125) vs SOFAR 125KTLX-G4-A
8 differences, the largest is max input current per tracker
Same type, similar size
Ginlong Solis
Growatt MAX 125KTL3-X LV vs Ginlong Solis S6-GC125K
7 differences, the largest is max input current per tracker
04

Written summary

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