Solar Lattice

Product

Sungrow SG250HX-US

ID
prod:sungrow-sg250hx
IRI
https://solarlattice.org/kb/prod/sungrow-sg250hx
Status
active
Also known as
SG250HX, SG250HX-US
Category
Inverters
Make
sungrow
Product level
family
Model number
SG250HX-US

The Sungrow SG250HX-US is a grid-connected PV string inverter for three-phase 800 V systems. It accepts up to 1500 V DC on 12 independent MPP inputs, each rated for 30 A, and tracks across 500 V to 1500 V, with full power between 860 V and 1300 V. AC output is 250 kVA at 30 °C, falling to 225 kVA at 40 °C and 200 kVA at 50 °C, and AC current is limited to 180.5 A at a nominal 60 Hz. The datasheet lists 99.0% maximum efficiency and 98.5% European efficiency. It has DC reverse connection protection and grid monitoring, and communicates over RS485. Fault 106, Grounding Cable Fault, means checking the ground cable connection and its insulation from live conductors, then calling Sungrow service if the fault stays. Many codes are grouped as System Fault: open the AC and DC switches, close them again after 15 minutes, and call Sungrow service if the fault comes back.

<!-- review notes

Claims

manufactured_by

c1 drafted · lead Sungrow proposed

max_input_voltage

c2 drafted · lead ≤ 1500 V

Conditions: Maximum PV input voltage

mppt_voltage_range

c3 drafted · lead 500–1500 V

Conditions: Full MPP voltage range

c4 drafted · lead 860–1300 V

Conditions: MPP voltage range for nominal power

max_input_current

c5 drafted · lead nominal 30 A

Conditions: Per MPP input (12 independent inputs); also max current per input connector

rated_power

c6 verified · fact nominal 250 KiloV-A

Conditions: AC output power at 30 °C ambient

verified by: review-workflowverified on: 2026-10-24review note: possible conflict with c7 (same source; check the conditions); possible conflict with c8 (same source; check the conditions)

c7 drafted · lead nominal 225 KiloV-A

Conditions: AC output power at 40 °C ambient

review note: possible conflict with c6 (same source; check the conditions); possible conflict with c8 (same source; check the conditions)

c8 drafted · lead nominal 200 KiloV-A

Conditions: AC output power at 50 °C ambient

review note: possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions)

rated_output_current

c9 drafted · lead ≤ 180.5 A

Conditions: Maximum AC output current

nominal_voltage

c10 drafted · lead nominal 800 V

Conditions: Nominal AC voltage, three-phase plus PE

c11 drafted · lead 680–880 V

Conditions: Permitted AC voltage range

review note: support check: partial - The 680–880 V AC voltage range is listed, but it is a range, not a nominal voltage; the statement's wording is loose though its condition says permitted range.

frequency

c12 verified · fact nominal 60 HZ

Conditions: Nominal grid frequency

verified by: review-workflowverified on: 2026-10-24

c13 drafted · lead 55–65 HZ

Conditions: Grid frequency range

efficiency

c14 drafted · lead nominal 99 PERCENT

Conditions: Maximum efficiency

review note: possible conflict with c15 (same source; check the conditions)

c15 drafted · lead nominal 98.5 PERCENT

Conditions: European weighted efficiency

review note: possible conflict with c14 (same source; check the conditions)

uses_protocol

c16 verified · fact RS-485

verified by: review-workflowverified on: 2026-10-24

implements

c17 drafted · lead Maximum power point tracking

12 independent MPP inputs

c18 drafted · lead Reverse polarity protection

DC reverse connection protection listed as Yes

Referenced by

Data