Sofar SOF-ESI-5K-T1 Hybrid Inverter 3-Phase

The SOF-ESI-5K-T1 hybrid inverter is a three-phase hybrid inverter designed for PV installations with energy storage, offering 3 independent MPPTs and supporting 100% unbalanced three-phase loads. The device ensures quiet operation thanks to natural cooling and fast on/off-grid switching (10 ms).

Manufacturer: SOFARSOLAR Co., Ltd. (SOFAR). Technical data is sourced from the SOFAR product sheet published in June 2025; the description refers to the ESI-5K-T1 variant from the ESI-5-12K-T1 series.

Electrical Parameters

• Output Power (Rated): 5 kW
• Max. Discharging Power (Battery Discharging): 5 kW
• Recommended Max. PV Power: 10 kWp
• Max. PV Input Voltage: 1000 V DC
• MPP Range: 160–950 V DC, number of MPPTs: 3
• Battery Voltage: 350–435 V DC
• Max. Battery Charging Power: 10 kW
• On/Off-grid Switching Time: 10 ms
• Max. Efficiency: 98.0% (max.), European efficiency: 97.0%
• THDv: <3% (at linear load)

Mechanical and Environmental Parameters

• Protection Class (IP): IP66
• Topology: non-isolation
• Protection Class: Class I
• Dimensions (W×H×D): 708 × 440 × 170 mm
• Weight: 30 kg
• Cooling Mode: natural
• Operating Temperature Range: -30°C to +60°C (derating above +45°C)
• Max. Installation Height: 4000 m (derating above 2000 m)
• Installation: wall-mounted
• Communication and Display: RS485, optionally Wi‑Fi/4G/LAN; LCD display + app