Deye SUN-12K-SG05LP3-EU-SM2

This inverter is the part that links the panels, the battery, the grid and the house: it turns solar current into the current in the sockets and decides by itself, at every moment, where it is most useful. It is hybrid, so it can charge the battery and supply the home even when the grid is missing. The 12 kW version is the most powerful in the compact 48 V battery family and is aimed at houses with large loads.

The 12.000 W of continuous power cover simultaneously the heat pump, the water heater and the rest of the appliances in the house, and at start-up it delivers double the power for 10 seconds, that is 24.000 W. Panels of up to 19.200 W can be connected, about 1,6 times the power of the inverter, which means good harvests even in the months with little sun. The battery accepts up to 240 A at 48 V, that is roughly around 11,5 kW, so it can sustain large consumption peaks, such as charging an electric car in the evening. The 6 programmable time slots allow charging and discharging to be scheduled according to the tariff. The IP65 enclosure can also be mounted outdoors, and the device works from -40 to +60 degrees C, so it also withstands an exposed wall.

Active power 12.000 W, maximum apparent 13.200 VA, output 3L+N+PE 230/400 V, 50/60 Hz, 18,2/17,4 A rated per phase, 100% unbalanced loads allowed, peak 2 x Pn for 10 s in off-grid, AC pass-through up to 45 A. Two independent MPPTs with 2 strings each, maximum DC voltage 800 V, MPPT range 200-650 V, start-up at 160 V, 20+20 A (Isc 30+30 A), maximum module power 19.200 W; maximum efficiency 97,6%, European 97,0%, MPPT above 99,9%. Lithium-ion or lead-acid battery 40-60 V, 240 A charge/discharge, 6 programmable time slots, AC coupling for retrofit and compatibility with a diesel generator. Size 386 x 660 x 250 mm, 35,2 kg, -40...+60 degrees C, communication RS485, RS232, CAN and WiFi/Bluetooth; compliance IEC 61727, IEC 62116, EN 50549, VDE-AR-N 4105, EN 62109-1/2.

Who it suits

Suitable for a large three-phase house, with a heat pump and a charger for an electric car, which installs 12-19 kWp of panels and stores on 48 V.

Terms explained

• Peak power (2 x rated, 10 s): For a few seconds the inverter can give double the power, exactly what a pump motor or a compressor needs in order to start.
• String of panels: A row of panels connected one after another; each MPPT can take two such rows, which can be mounted on different roof slopes.
• AC pass-through (grid-to-load): How much current can pass directly from the grid to the house through the inverter, when the sun and the battery are not enough.

Technical specifications

Recommended applications

• Large three-phase homes with a heat pump and EV charger
• Hybrid systems 12-19 kWp with storage on 48 V
• Off-grid backup for loads with large peaks
• Small farms and three-phase workshops

Warranty

5 years standard, extendable to 10 years depending on the Deye regional policy

Technical details

Specifications confirmed from the manufacturer's datasheet

Deye SUN-12K-SG05LP3-EU-SM2 is the top model of the SM2 three-phase hybrid low-voltage series (48 V battery) in compact format. The rated active power is 12.000 W, and the maximum apparent power 13.200 VA, on a 3L+N+PE 230/400 V output, 50/60 Hz, with 18,2/17,4 A rated current per phase. It accepts 100% unbalanced loads between phases, offers a peak of 2 x the rated power for 10 s in off-grid and AC pass-through of up to 45 A.

The PV input is managed by 2 independent MPPT trackers with 2 strings each, maximum DC voltage 800 V, MPPT range 200-650 V, start-up at 160 V and maximum input current 20+20 A (short circuit 30+30 A). The maximum power of the connected modules reaches 19.200 W. Maximum efficiency 97,6%, European efficiency 97,0%, MPPT efficiency above 99,9%.

The lithium-ion or lead-acid battery, 40-60 V, with a maximum charge/discharge current of 240 A, allows high instantaneous consumption to be covered. 6 programmable time slots are available, AC coupling for retrofit and compatibility with a diesel generator. IP65 enclosure with intelligent cooling, 386 x 660 x 250 mm, 35,2 kg, -40...+60 degrees C. Communication RS485, RS232, CAN and WiFi/Bluetooth. Certifications: IEC 61727, IEC 62116, EN 50549, VDE-AR-N 4105, EN 62109-1/2.