General Data of Sungrow SG333HX Inverter
- Dimensions (W*H*D) : 1136 * 870 * 361 mm
- Weight* : ≤ 116 kg
- Isolation method : Transformerless
- Degree of protection : IP66
- Power consumption at night: < 6 W
- Operating ambient temperature range : – 30 to 60℃
- Allowable relative humidity range : 0 – 100 %
- Cooling method : Smart forced air cooling
- Max. operating altitude : 4000 m (> 3000 m derating)
- Display : LED, Bluetooth+APP
- Communication : RS485 / PLC
- DC connection type : MC4-Evo2 (Max. 6 mm², optional 10mm²)
- AC connection type : Support OT/DT terminal (Max. 400 mm²)
- Compliance : IEC 62109, IEC 61727, IEC 62116, IEC 60068, IEC 61683, EN 50549-1 /2
- Grid Support: Q at night function, LVRT, HVRT,active & reactive power control and power ramp rate control, Q-U control, P-f control
CIRCUIT DIAGRAM


EFFICIENCY CURVE


| Type designation | SG333HX |
| Input (DC) | |
| Max. PV input voltage | 1500 V |
| Min. PV input voltage / Startup input voltage | 500 V / 550 V |
| Nominal PV input voltage | 1080 V |
| MPP voltage range | 500 V – 1500 V |
| No. of independent MPP inputs | 12 (optional: 16) |
| Max. number of input connector per MPPT | 2 |
| Max. PV input current | 12 * 40 A (Optional: 16 * 30 A) |
| Max. DC short-circuit current per MPPT | 60 A |
| Output (AC) | |
| AC output power | 333 kVA @ 35℃ / 320 kVA @ 40 ℃ |
| Max. AC output current | 240.5 A |
| Nominal AC voltage | 3 / PE, 800 V |
| AC voltage range | 640 – 920 V |
| Nominal grid frequency / Grid frequency range | 50 Hz / 45 – 55 Hz, 60 Hz / 55 – 65 Hz |
| THD | < 3 % (at nominal power) |
| DC current injection | < 0.5 % In |
| Power factor at nominal power / Adjustable power factor | > 0.99 / 0.8 leading – 0.8 lagging |
| Feed-in phases / Connection phases | 3 / 3 |
| Efficiency | |
| Max. efficiency / European efficiency | 99.02 % / 98.8 % |
| Protection | |
| DC reverse connection protection | Yes |
| AC short circuit protection | Yes |
| Leakage current protection | Yes |
| Grid monitoring | Yes |
| Ground fault monitoring | Yes |
| DC switch / AC switch | Yes / No |
| PV string current monitoring | Yes |
| Q at night function | Yes |
| Anti-PID and PID recovery function | Optional |
| Surge protection | DC Type II / AC Type II |
*Due to the multi-supplier for some key components, the actual weight may have a ±8% deviation, please refer to the actually delivered product.







