Description
Sungrow SG350HX Three-Phase Inverter, 350 kW
The Sungrow SG350HX is a three-phase grid-connected string inverter for utility-scale photovoltaic plants with a 1,500 V DC architecture. The configuration specified in the datasheet features 12 independent MPPT trackers, with 14 or 16 MPPT options, and two string inputs per tracker.
It achieves a maximum efficiency of 99.02 % and provides a three-phase output at 800 V AC. It integrates RS485 and PLC communication, intelligent I-V curve diagnostics and AC and DC insulation monitoring. Its declared output power is 352 kVA at 30 °C, 320 kVA at 40 °C and 295 kVA at 50 °C.
Key Features
1,500 V DC Architecture
Inverter for utility-scale solar plants, with a rated PV input voltage of 1,080 V and a three-phase output at 800 V AC.
12 MPPTs, with 14 or 16 MPPT Options
Two string inputs per MPPT. Current capabilities depend on the supplied configuration.
99.02 % Maximum Efficiency
98.8 % European efficiency and 98.5 % CEC efficiency, according to the manufacturer’s technical table.
PLC Communication and I-V Diagnostics
Power line communication, I-V curve diagnostics and data exchange with solar tracking systems.
Weak Grid Support
Operation with SCR ≥1.16 and a reactive power response time of less than 30 ms, as specified by the manufacturer.
Protection and Insulation Monitoring
IP66 protection, an integrated DC switch and 24-hour real-time AC/DC insulation monitoring.
Technical Specifications
Key Specifications
| Parameter | SG350HX |
|---|---|
| AC Output Power | 352 kVA at 30 °C / 320 kVA at 40 °C / 295 kVA at 50 °C |
| Rated AC Output Voltage | 800 V, 3 / PE |
| Maximum PV Input Voltage | 1,500 V DC |
| Independent MPPT Trackers | 12; optional 14 or 16 |
| Inputs per MPPT | 2 |
| Maximum PV Input Current | 12 × 40 A; optional 14 × 30 A or 16 × 30 A |
| Maximum / European / CEC Efficiency | 99.02 % / 98.8 % / 98.5 % |
| Dimensions, Width × Height × Depth | 1,136 × 870 × 361 mm |
| Unit Weight | ≤116 kg |
Output power is expressed in kVA in accordance with the datasheet and varies with temperature. The 14 or 16 MPPT options are supply configurations that must be confirmed when ordering.
PV Input and MPPT Configurations
- Maximum PV input voltage: 1,500 V DC.
- Minimum PV input voltage: 500 V DC.
- Start-up voltage: 550 V DC.
- Rated PV input voltage: 1,080 V DC.
- MPPT voltage range: 500–1,500 V DC.
- 12 MPPT configuration: maximum input current of 40 A per MPPT and 24 inputs in total.
- Optional 14 MPPT configuration: maximum input current of 30 A per MPPT and 28 inputs in total.
- Optional 16 MPPT configuration: maximum input current of 30 A per MPPT and 32 inputs in total.
- Maximum number of inputs per MPPT: 2.
- Maximum DC short-circuit current per MPPT: 60 A.
- DC connection: MC4-Evo2, with a maximum cable cross-section of 6 mm² and a 10 mm² option.
The manufacturer’s overview specifies 20 A per string, while the table distinguishes between the current limits of the 12, 14 and 16 MPPT configurations. System sizing must follow the limits of the supplied configuration and the manufacturer’s instructions.
AC Output and Grid Connection
- Output power: 352 kVA at 30 °C, 320 kVA at 40 °C and 295 kVA at 50 °C.
- Maximum AC output current: 254 A.
- Rated AC voltage: 800 V.
- Three-phase connection: 3 / PE, without neutral.
- AC voltage range: 640–920 V.
- Rated frequency: 50 / 60 Hz.
- Frequency range: 45–55 Hz at 50 Hz and 55–65 Hz at 60 Hz.
- Total harmonic distortion: less than 3 % at rated power.
- DC current injection: less than 0.5 % of rated current.
- Power factor at rated power: greater than 0.99.
- Adjustable power factor: from 0.8 leading to 0.8 lagging.
- AC connection via OT or DT terminal, with a maximum cable cross-section of 400 mm².
Diagnostics, Communications and Grid Support
- RS485 and PLC communication.
- LED indicators and access via Bluetooth and app.
- Intelligent I-V curve diagnostics.
- String current monitoring.
- Data exchange with solar tracking systems.
- Night-time reactive power Q function.
- LVRT and HVRT.
- Active and reactive power control and power ramp rate control.
- Q-U and P-f control.
- Weak grid operation with SCR ≥1.16, as specified by the manufacturer.
- Reactive power response time of less than 30 ms, as specified by the manufacturer.
Protection and Functions
- DC reverse polarity protection.
- AC short-circuit protection.
- Leakage current protection.
- Grid and ground fault monitoring.
- 24-hour real-time AC and DC insulation monitoring.
- Integrated DC switch with automatic disconnection in the event of faults.
- AC switch: not integrated, according to the datasheet.
- Type II surge protection on DC and AC sides.
- Anti-PID function and PID recovery: optional.
Mechanical Specifications and Operating Conditions
- Dimensions, width × height × depth: 1,136 × 870 × 361 mm.
- Unit weight: ≤116 kg.
- Topology: transformerless.
- Specified protection ratings: IP66 and NEMA 4X.
- Intelligent forced-air cooling.
- Night-time power consumption: less than 6 W.
- Operating ambient temperature: −30 to +60 °C.
- Permissible relative humidity: 0–100 %.
- Maximum altitude: 4,000 m, with power derating above 3,000 m.
Standards Listed in the Datasheet
IEC 62109, IEC 61727, IEC 62116, IEC 60068, IEC 61683, VDE-AR-N 4110:2018, VDE-AR-N 4120:2018, EN 50549-1/2, UNE 206007-1:2013, P.O.12.3, UTE C15-712-1:2013, UL 1741, UL 1741 SA, IEEE 1547, IEEE 1547.1, CSA C22.2 107.1-01-2001, California Rule 21 and UL 1699B.
Sungrow SG350HX for Utility-Scale Photovoltaic Plants
The SG350HX combines multiple independent MPPT trackers, an 800 V AC output and diagnostic tools for 1,500 V DC photovoltaic projects. Its 12, 14 or 16 MPPT configurations allow different PV array layouts to be considered while respecting the current capabilities of each version.
At Vico Export Solar Energy, we supply Sungrow inverters and photovoltaic equipment to engineering firms, installers and EPC companies, with domestic and international shipping. Contact us to discuss availability, MPPT configuration and supply terms for your project.
Datasheet
Consult the SG350HX V16 datasheet and confirm the supply configuration for your installation design.
