⚡ Utility-Scale Flagship

Sungrow

Sungrow SG320HX-20

Name: Sungrow SG320HX-20
Brand: Sungrow
Availability: InStock

320 kVA Three-Phase 1500 Vdc String Inverter

320 kVA six-MPPT utility-scale inverter built around a 1500 Vdc DC bus. Higher DC voltage cuts cable losses across long strings, while integrated PLC communications and motorized DC fault-cutoff eliminate combiner-box overhead. Industry-leading 99.02% peak efficiency.

320 kVA @ 40°C

Rated AC Power

99.02%

Max Efficiency

MPPTs

Request a Quote → Download Datasheet

Key Features

Why Engineers Choose the SG320HX-20

Four datasheet-backed advantages for utility-scale solar projects.

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99.02% Peak Efficiency

Class-leading conversion efficiency with 98.8% European weighted efficiency. Multiple independent MPPTs minimize string-mismatch losses and maximize annual yield.

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6-MPPT Architecture

30 strings (6 × 5) maximize design flexibility across complex roof orientations and partial-shading conditions. MPP voltage range 500–1500 V accommodates bifacial and high-power modules.

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24h DC Insulation Monitoring + Motorized DC Switch

Continuous 24-hour real-time AC and DC insulation monitoring detects ground faults before they propagate. Motorized DC switch enables automatic fault cutoff. IP66 enclosure rating for outdoor utility-scale installation.

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IP66 Outdoor-Rated Enclosure

Operating temperature −30 °C to +60 °C with derating above 45 °C. Smart forced air keeps acoustic emissions low. Suitable for coastal and industrial environments.

Specifications

Complete Technical Datasheet

All parameters sourced from Sungrow's official SG320HX-20 datasheet. Country-specific grid-code configurations available on request.

Rated AC Output Power	320 kVA @ 40°C
Max. Efficiency / European	99.02% / 98.8%
Number of MPPTs	6
Strings Configuration	30 strings (6 × 5)
Max. PV Input Power	[DATA REQUIRED]
Max. DC Voltage	1500 V
MPP Voltage Range	500–1500 V
Max. Input Current	75 A per MPPT
AC Output Voltage	800 V, 3/PE (range 640–920 V)
Total Harmonic Distortion (THD)	<1%
Protection Rating	IP66
Operating Temperature	−30 °C to +60 °C
Max. Operating Altitude	4000 m
Cooling Method	Smart forced air
AFCI / Safety	Optional
Weight	≤110 kg
Dimensions (W × H × D)	1147 × 778 × 371 mm
Communication Interface	RS485 + optional WLAN / Ethernet
Monitoring Platform	iSolarCloud
Grid Code Compliance	EN 50549, AS/NZS 4777.2, VDE-AR-N 4105, G99, CEI 0-21, IEC 61727
Standard Warranty	5 yr (extendable 25 yr)

Applications

Where the SG320HX-20 Fits Best

Optimized for utility-scale solar deployments.

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Utility-Scale Solar Farms

Ground-mount PV plants from 5 MW to 500 MW with 1500 Vdc DC architecture.

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Arid & Desert Plants

Hot-climate solar farms requiring high-temperature derating performance and dust resistance.

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Repowering Projects

Replacement of legacy central inverters with modern string-inverter architecture.

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Hybrid PV + BESS Plants

Grid-scale hybrid power plants pairing PV with battery storage for arbitrage and ancillary services.

Frequently Asked Questions

What Engineers Ask About the SG320HX-20

Datasheet-driven answers for procurement teams and PV designers.

What is the maximum efficiency of the Sungrow SG320HX-20?

The Sungrow SG320HX-20 has a maximum efficiency of 99.02% and a European weighted efficiency of 98.8%, placing it among the highest-efficiency inverters in its power class.

What is the warranty on the Sungrow SG320HX-20?

The SG320HX-20 comes with a standard 5-year manufacturer warranty, extendable to 10, 15, 20 or 25 years through Sungrow's official warranty extension program. Econo Solar handles warranty registration on your behalf and facilitates RMA service globally.

What certifications does the SG320HX-20 have?

The SG320HX-20 is certified to IEC 62109-1/-2, IEC 62116 and IEC 61727. It supports major global grid codes including EN 50549, AS/NZS 4777.2, VDE-AR-N 4105, G99 and CEI 0-21. Country-specific configurations available on request.

How many PV strings can the SG320HX-20 support?

The SG320HX-20 accepts up to 30 strings (6 × 5) across 6 independent MPPTs with 75 A per MPPT. With MPP voltage range 500–1500 V and maximum DC voltage of 1500 V, it supports utility-scale bifacial, TOPCon and HJT modules including long-string configurations on 1500 Vdc DC busses.

How fast can Econo Solar deliver the SG320HX-20?

Stock SKUs ship from Shanghai within 5–10 business days FOB Incoterms 2020. Non-stock or country-specific configurations require 4–8 weeks production lead time. Submit your RFQ and we will confirm stock status within 24 hours.