KSTAR KSG / G three-phase string inverters, 25–350 kW, for commercial, industrial and grid-connected PV plants
Supplied as an official KSTAR partner
Manufacturer: KSTAR · China · Model: KSG / G
KSG and G three-phase string inverters rated 25–350 kW, for rooftop PV plants at commercial and industrial sites and for ground-mounted grid-connected stations. Most versions work with DC voltage up to 1100 V, while the G350KTH is rated for 1500 V on large stations.
- Models
- KSG-25/30/40KT-M1, G30–50KT7, G50/60/80KT, G75KTL (220 V), G125KT7, G350KTH/KTHC; also KSG-120CL-M0, KSG-250UH
- Max. DC voltage
- 1100 V (G75KTL — 800 V, G350KTH — 1500 V)
- MPPT
- 3–16
- Max. efficiency
- 98.5–98.8 %, G350KTH — 99 %
Technical specifications
| Models | KSG-25/30/40KT-M1, G30–50KT7, G50/60/80KT, G75KTL (220 V), G125KT7, G350KTH/KTHC; also KSG-120CL-M0, KSG-250UH |
|---|---|
| Max. DC voltage | 1100 V (G75KTL — 800 V, G350KTH — 1500 V) |
| MPPT | 3–16 |
| Max. efficiency | 98.5–98.8 %, G350KTH — 99 % |
| European efficiency | up to 98.5 % |
| Ingress protection | IP66 |
| Weight | 48.7 kg (G50KT) – 125 kg (G350KTH) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The range covers several sizes, from KSG-25/30/40KT-M1 and G30–50KT7 up to G125KT7 and G350KTH/KTHC, plus the KSG-120CL-M0 and KSG-250UH versions. The G75KTL is meant for a 220 V grid, and its input is limited to 800 V. The number of MPPT inputs depends on the model and runs from 3 to 16, so roof sections with different orientation or shading get their own trackers. Maximum efficiency is 98.5–98.8 %, 99 % for the G350KTH, and European efficiency reaches 98.5 %. The enclosure is rated IP66, so the inverter can be mounted outdoors without a cabinet. Weight ranges from 48.7 kg (G50KT) to 125 kg (G350KTH), and the heaviest version needs lifting equipment.
How to choose
Choose the model by site capacity and DC voltage. A large ground-mounted plant takes the G350KTH at 1500 V, a mid-sized roof takes the G50/60/80KT or G125KT7 at 1100 V. If you need up to 25 kW, the three-phase BluE series at 3–25 kW with IP65 is a better fit, and for a single-phase connection at 1–6 kW there is BluE-G. For megawatt-class sites consider the GSM central inverters at 2.5–6.25 MW with 1500 V PV voltage. Without a grid, look at the Knight at 3.6 and 6 kW.
Request a price and lead time
KSG / G three-phase string inverters, 25–350 kW, for commercial, industrial and grid-connected PV plants, KSTAR. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the power range of the KSG and G inverters?
The range covers 25–350 kW. Smaller versions such as the KSG-25/30/40KT-M1 suit rooftops, the G350KTH large stations.
What is the maximum DC input voltage of the G350KTH?
The G350KTH is rated for 1500 V. Most other models in the series work up to 1100 V, and the G75KTL only up to 800 V.
How many MPPT inputs do these inverters have?
Depending on the version, from 3 to 16 MPPT inputs. More inputs make it easier to separate strings with different orientation.
Can the inverter be installed outdoors?
Yes, the enclosure is rated IP66. The weight of 48.7–125 kg matters when choosing the mounting.
What is the efficiency of the G350KTH string inverters?
The maximum efficiency of the G350KTH is 99 %, and 98.5–98.8 % for the rest of the series. European efficiency is up to 98.5 %.
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