SUN-12K-SG05LP3
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Deye SUN-12K-SG05LP3 – 12 kW three-phase low-voltage (48 V) hybrid inverter for residential and small commercial systems
The Deye SUN-12K-SG05LP3 (SUN-12K-SG05LP3-EU-SM2) is a 12 kW rated power, three-phase, low-voltage (48 V) hybrid inverter, the highest-power member of the popular SG05LP3 series. Thanks to its transformer-isolated design, it is compatible with the most common 48 V batteries (lithium-ion or lead-acid), while the 2 independent MPPTs optimize production even on roofs with different orientations. It combines on-grid and off-grid operation in a single unit, making it a flexible solution for powering larger family homes and small businesses.
Why choose the Deye SUN-12K-SG05LP3 inverter?
The Deye SUN-12K-SG05LP3 inverter operates with up to 97.6% maximum and >99% MPPT efficiency, and optimizes energy use and storage with intelligent algorithms. During the day, solar energy first supplies the loads, with surplus charging the battery and feeding the grid; in case of power outage, the inverter automatically switches to battery operation. The 100% unbalanced output adapts to phase-by-phase varying loads, and in off-grid mode the inverter can deliver twice the rated power for 10 seconds, allowing high-inrush motors to start. The series’ highest charge/discharge current of up to 240 A ensures fast battery charging and strong discharge performance.
Key advantages of the Deye SUN-12K-SG05LP3
- 48 V battery compatibility – transformer-isolated design, for lithium-ion and lead-acid batteries, up to 240 A charge/discharge
- 2 MPPT controllers – up to 18 kW PV input, for roofs with different orientations
- 100% unbalanced output – precise adaptation to real, unbalanced loads
- Strong starting power – 2× rated power for 10 s in off-grid mode
- High efficiency – up to 97.6% max. and >99% MPPT efficiency
- Scalability – up to 10 units can be paralleled in on-grid and off-grid modes
- AC-coupled retrofit and generator support – existing solar systems can be expanded with storage; diesel generator energy can also be stored
- Compact, outdoor design – IP65 protection, only 35.2 kg, ≤55 dB, touchscreen LCD
- Flexible monitoring – GPRS / Wi-Fi / Bluetooth / 4G / LAN, RS485/RS232/CAN
Applications
The Deye SUN-12K-SG05LP3 inverter is ideal for larger family homes, farms, and small businesses where three-phase, flexible, and reliable energy management is needed with 48 V battery storage. It helps maximize self-consumption, acts as a backup power source during outages, and with 6 programmable charge/discharge periods enables off-peak charging and peak-time discharge. Thanks to AC-coupled expandability, existing solar systems can also be retrofitted with storage.
Deye SUN-12K-SG05LP3 technical specifications
| Parameter | Value |
|---|---|
| Model | SUN-12K-SG05LP3-EU-SM2 |
| Type | three-phase, low-voltage (48 V) hybrid inverter |
| Rated AC power | 12,000 W (12 kW) |
| Max. AC apparent power | 13,200 VA |
| Rated AC current (380/400 V) | 18.2 / 17.4 A |
| Max. AC current (380/400 V) | 20.0 / 19.2 A |
| Rated AC voltage / range | 220/380 V, 230/400 V; 0.85–1.1 Un |
| Grid frequency / range | 50 Hz (45–55) / 60 Hz (55–65) |
| Grid connection | 3L + N + PE |
| Max. continuous AC pass-through (grid→load) | 45 A |
| Peak power (off-grid, 10 s) | 2× rated |
| Power factor range | 0.8 capacitive – 0.8 inductive |
| Max. PV input power | 18,000 W (18 kW) |
| Max. PV access power | 24,000 W (24 kW) |
| Max. PV voltage | 800 V |
| MPPT voltage range | 200–650 V |
| Rated PV voltage | 550 V |
| Start-up voltage | 160 V |
| Number of MPPTs / strings | 2 MPPTs / 1 string per MPPT |
| Max. operating PV current | 20+20 A |
| Max. short-circuit current | 30+30 A |
| Battery type | lead-acid or lithium-ion (48 V) |
| Battery voltage range | 40–60 V |
| Number of battery inputs | 1 |
| Max. charge/discharge current | 240 A |
| Charging strategy | self-adaptive to BMS |
| Max. efficiency | 97.6% |
| Euro efficiency | 97.0% |
| MPPT efficiency | >99% |
| THDi | <3% |
| Parallel capability | up to 10 units (on-grid and off-grid) |
| Operating temperature | −40 – +60 °C (derating above >45 °C) |
| Humidity | 0–100% |
| Altitude | 3,000 m |
| Noise level | ≤55 dB |
| Protection rating | IP65 |
| Cooling | intelligent air cooling |
| Monitoring | GPRS / Wi-Fi / Bluetooth / 4G / LAN (optional) |
| Communication | RS485, RS232, CAN |
| Surge protection | Type II (DC), Type II (AC) |
| Dimensions (W × H × D) | 386 × 660 × 250 mm |
| Weight | 35.2 kg |
| Warranty | 5 years / 10 years (depending on installation location) |
| Grid standards | IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE R25, G99, VDE-AR-N 4105 |
Protection functions include: DC reverse polarity, AC overcurrent and overvoltage protection, short-circuit and thermal protection, DC component monitoring, insulation resistance and residual current protection (RCD), anti-islanding protection, DC disconnect, and optional AFCI (arc fault protection).
Frequently asked questions about the Deye SUN-12K-SG05LP3 inverter
What does the SUN-12K-SG05LP3-EU-SM2 designation mean?
The “12K” refers to the 12 kW rated power, “SG05LP3” to the three-phase, low-voltage (48 V battery) hybrid platform; the 12 kW is the largest member of the series.
What is the difference between the SUN-10K and SUN-12K SG05LP3?
Both models are built on the same platform and housing; the main differences are the rated power (10 kW vs 12 kW), the corresponding AC current, the higher PV input (15 kW vs 18 kW), and the maximum charge/discharge current (210 A vs 240 A).
What battery does the Deye SUN-12K-SG05LP3 work with?
It is compatible with the most common 48 V (40–60 V) batteries, whether lithium-ion or lead-acid, with up to 240 A charge/discharge current.
Can the Deye SUN-12K-SG05LP3 be installed outdoors?
Yes, thanks to IP65 protection and intelligent air cooling, it is suitable for outdoor installation, with an operating temperature range of −40 to +60 °C (with derating above >45 °C).
| Weight | 35,2 kg |
|---|---|
| Dimensions | 25 × 38,6 × 66 cm |
| Per pallet | 12 pcs |
Shipping costs
For orders over 10 units, we provide a custom quote. Our shipping partner is DACHSER.
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