Deye SUN-20K-SG01HP3-EU-AM2

This device is the centre of a solar system with storage for a large building: it takes the current from the panels, converts it into the current used by appliances and splits it between the loads, the battery and the grid. The battery is of the high-voltage type, built from modules stacked on top of each other, which transfer the energy with a low current and reduced losses. When the grid goes down, the inverter continues to supply the circuits chosen for backup.

The 20,000 W cover in parallel the loads of a company office, of a workshop or of a very large house, and the load can be completely unbalanced across the phases, so you are not obliged to distribute the appliances equally. You can connect up to 40 kWp of panels, of which the device processes at most 32 kW, a substantial oversizing that brings output also on weak days. The battery accepts 50 A on charging and 50 A on discharging, and the dialogue with its management system is done automatically, so you do not have to adjust anything manually. The IP65 enclosure allows outdoor mounting, and at temperatures above 45 degrees C the device reduces its power in a controlled way to protect itself.

Active power 20,000 W, maximum apparent 22,000 VA, three-phase output 220/380 V or 230/400 V, 50/60 Hz, 33.4/31.9 A maximum current per phase, fully unbalanced load permitted. DC side: 2 independent MPPTs with 2 strings each (2+2), maximum voltage 1000 V, MPPT range 150-850 V, 26 A maximum working current on each MPPT, 39 A permitted short-circuit current, 40 kWp of connectable modules and 32 kW of processed DC power; maximum efficiency 97.6%, European 97.0%. Lithium-ion battery 160-700 V, 50 A on charging and 50 A on discharging, BMS communication through CAN/RS485. IP65 enclosure with intelligent cooling, -40...+60 degrees C with derating above 45 degrees C, RS485/RS232/CAN interfaces and optional WiFi/LAN/4G modules; compliance with IEC 61727, IEC 62116, EN 50549, VDE-AR-N 4105, CEI 0-21, G98/G99.

Who it suits

Suitable for a company office, a workshop or a very large home, with up to 40 kWp of panels and storage on a high-voltage battery.

Terms explained

• BMS: The computer inside the battery, which supervises its cells; it communicates by itself with the inverter, so that the battery is not charged or discharged too much.
• Derating: The automatic reduction of power at high temperatures, a protective measure that extends the life of the components.
• Short-circuit current (Isc): The maximum current a string of panels can deliver in an extreme situation; the inverter must withstand it without being damaged.

Technical specifications

Recommended applications

• Large homes with storage on a high-voltage battery
• Company premises, workshops and farms
• Systems with back-up for critical loads
• Three-phase self-consumption with export limitation

Technical details

Specifications confirmed from the manufacturer's datasheet

SUN-20K-SG01HP3-EU-AM2 is the 20 kW three-phase hybrid inverter from the Deye SG01HP3-EU-AM2 series, designed for high-voltage batteries. The photovoltaic section has 2 independent MPPT trackers with 2 strings each (2+2), a maximum DC voltage of 1000 V and a wide MPPT range of 150-850 V; the maximum working current is 26 A on each MPPT, with 39 A permitted short-circuit current. The manufacturer allows the connection of up to 40 kWp of modules, with a maximum of 32 kW of processed DC power, hence a substantial oversizing of the PV array.

On the storage side it accepts lithium-ion stacks in the 160-700 V range, with 50 A maximum charging current and 50 A on discharging; the dialogue with the BMS is done through CAN/RS485. The AC output is three-phase 220/380 V or 230/400 V, with 20,000 W rated active power, 22,000 VA maximum apparent power and 33.4 A maximum current per phase, the load being allowed to be completely unbalanced across the phases. The maximum efficiency is 97.6%, and the European efficiency 97.0%.

The enclosure has an IP65 protection rating and intelligent cooling, with operation between -40 and +60 °C (derating above 45 °C). The RS485/RS232/CAN interfaces and the optional WiFi/LAN/4G modules provide remote monitoring. Compliance covers IEC 61727, IEC 62116, EN 50549, VDE-AR-N 4105, CEI 0-21 and G98/G99.