SG320/350HX and SG320/350HX-20 — 1,500 V string inverter for utility-scale PV plants, 320–352 kVA
Country: China · Model: SG320/350HX and SG320/350HX-20
This 1,500 V string inverter for utility PV plants delivers 352 kVA at 30 °C and 320 kVA at 40 °C, with 99.02% peak efficiency. Its 800 V 3/PE output goes to an MVS station, and together they form blocks of up to 9.8 MW.
- AC power
- 352 kVA at 30 °C / 320 kVA at 40 °C
- Grid voltage
- 3/PE, 800 V
- PV input
- 1,500 V, MPP 500–1,500 V
- MPPT
- 12–16 (HX) or 6 at 75 A each (HX-20)
Technical specifications
| AC power | 352 kVA at 30 °C / 320 kVA at 40 °C |
|---|---|
| Grid voltage | 3/PE, 800 V |
| PV input | 1,500 V, MPP 500–1,500 V |
| MPPT | 12–16 (HX) or 6 at 75 A each (HX-20) |
| Max. / European efficiency | 99.02% / 98.8% |
| Protection rating | IP66 |
| Weight | ≤ 116 kg (HX), ≤ 106 kg (HX-20) |
| Customs codes (for reference) | |
| HS code | 8504.40 |
| UKTZED code (Ukraine) | 8504408800 (>7.5 kVA) |
| CN code (EU) | 85044084 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
Two versions are built. The HX has 12 to 16 MPPTs, the HX-20 has 6 at 75 A each, so several parallel strings of high-power modules can share one tracker. The 500–1,500 V MPP range leaves headroom, and tracking holds even in heat when string voltage sags. European efficiency of 98.8% reflects part-load losses and says more about annual yield than the peak figure. An 800 V output with no neutral carries less current than a 400 V system, so AC cables to the transformer get a smaller cross-section. The IP66 enclosure is made for field installation on posts next to the module tables. Weight is up to 116 kg for the HX and up to 106 kg for the HX-20, so mounting needs a lifting aid.
How to choose
Choose the version by string layout. Many strings of different length or orientation are better spread over the HX with 12–16 MPPTs, while high-power modules wired in parallel suit the HX-20 with 75 A per tracker. Size the block for the site's summer temperature, which at 40 °C means 320 kVA, not 352. For a flat field of tens of megawatts the alternative is the SG8800UD central inverter at 8,800 kVA at 45 °C, and for a roof on a 400 V grid the SG75/110/125CX-P2 at 75–125 kW fits.
Request a price and lead time
SG320/350HX and SG320/350HX-20 — 1,500 V string inverter for utility-scale PV plants, 320–352 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How many MPPTs does the SG350HX have?
12–16 MPPTs, while the SG350HX-20 has 6 MPPTs at 75 A each.
What is the efficiency of the SG350HX?
99.02% peak and 98.8% European.
What power does the SG350HX deliver at 40 °C?
320 kVA, rising to 352 kVA at 30 °C.
What grid voltage does the SG350HX feed?
800 V in a 3/PE layout with no neutral, so it connects through a step-up transformer such as an MVS station.
How much does the SG350HX-20 weigh?
Up to 106 kg, while the HX version weighs up to 116 kg.
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