How to make it work: Three phase inverter with low-voltage battery

A lot of end-users ask us: “My battery is a low-voltage 51.2V model, but I need 10 kW (or 8 kW / 12 kW) of 3-phase output power. Local solar installers told me this combination won’t work and that I must buy an expensive High-Voltage (HV) battery instead. We don’t want to waste money—is it possible to run a 3-phase inverter with our existing 51.2V low-voltage battery?”

The Solution: Deye Low-Voltage 3-Phase Inverters

Luckily, Deye—a leading global manufacturer of solar technology—developed a specialized series of Low-Voltage 3-Phase Hybrid Inverters designed specifically to solve this issue.

Deye’s low-voltage 3-phase series requires a battery voltage range of only 40V to 60V, which perfectly matches standard 48V/51.2V LFP lithium batteries. This allows you to achieve high power, 3-phase output without being forced to replace your existing battery bank with an expensive high-voltage system.

(Note: The low-voltage 3-phase series supports output power up to 12 kW. If your system requires 15 kW or more, you will need a Deye High-Voltage Inverter.)

5 Models of Deye Low-Voltage 3-Phase Hybrid Inverters

You can easily select the right model from Deye’s 5 capacity options based on your power requirements:

  1. SUN-5K-SG04LP3-EU
    • Battery Voltage Range: 40–60V
    • Rated Output Power: 5 kW (3-Phase)
    • Max Battery Charge/Discharge Current: 120A
    • Max PV Input Power: 6.5 kW
    • Max Output Power: 5.5 kW
  2. SUN-6K-SG04LP3-EU
    • Battery Voltage Range: 40–60V
    • Rated Output Power: 6 kW (3-Phase)
    • Max Battery Charge/Discharge Current: 150A
    • Max PV Input Power: 7.8 kW
    • Max Output Power: 6.6 kW
  3. SUN-8K-SG04LP3-EU
    • Battery Voltage Range: 40–60V
    • Rated Output Power: 8 kW (3-Phase)
    • Max Battery Charge/Discharge Current: 190A
    • Max PV Input Power: 10.4 kW
    • Max Output Power: 8.8 kW
  4. SUN-10K-SG04LP3-EU
    • Battery Voltage Range: 40–60V
    • Rated Output Power: 10 kW (3-Phase)
    • Max Battery Charge/Discharge Current: 210A
    • Max PV Input Power: 13 kW
    • Max Output Power: 11 kW
  5. SUN-12K-SG04LP3-EU
    • Battery Voltage Range: 40–60V
    • Rated Output Power: 12 kW (3-Phase)
    • Max Battery Charge/Discharge Current: 240A
    • Max PV Input Power: 15.6 kW
    • Max Output Power: 13.2 kW

Why Choose This Solution?

Choosing a Deye LV 3-phase inverter saves you significant upfront capital by keeping your existing 48V/51.2V low-voltage battery setup.

At Happysun / Lvtopsun, we maintain local warehouse stock right here in Europe for rapid delivery. If you are located outside Europe, we can ship directly from our factory in China. Because inverters do not contain hazardous battery chemistry, international air shipping is fast, easy, and affordable.

Ready to upgrade your home or business to 3-phase power? Contact Happysun today to find the perfect Deye solar inverter for your system!

Similar Posts