Deye SUN-15K-SG05LP3-EU-SM2

Hybrid PV Inverter SUN-15K-SG05LP3-EU-SM2 — three‑phase energy management for solar, storage and diesel integration

The SUN-15K-SG05LP3-EU-SM2 is a three‑phase hybrid inverter designed to optimize solar energy, battery storage, and auxiliary power sources in residential and commercial PV installations. It offers 100% unbalanced output per phase, with each phase able to deliver up to 50% of the rated power, enabling flexible load distribution. This unit is engineered for AC-coupled retrofit to existing solar systems and supports multiple batteries in parallel, providing scalable energy storage and backup capabilities without requiring a full system overhaul.

Applications and use cases

Ideal for retrofit projects and new builds that demand versatile energy management, the SUN-15K-SG05LP3-EU-SM2 supports on‑grid and off‑grid operation with up to 10 units in parallel, allowing scalable storage to match evolving loads. It is suited for homes and small to medium commercial facilities that want to combine PV generation with a 48 V battery bank, while retaining the option to store energy from a diesel generator. The AC‑coupled design simplifies integration with existing PV arrays, enabling efficient use of stored energy for critical loads during outages or grid interruptions.

• AC‑coupled retrofit capability for existing solar systems
• Three‑phase inverter architecture for balanced distribution across phases
• Parallel operation with up to 10 units for grid-tied and off‑grid scaling
• Supports multiple 48 V battery banks in parallel with a transformer‑isolated design for safety
• Backup energy from diesel generator integration to extend resilience
• Six programmable battery charging/discharging periods for load shifting and peak shaving

Key electrical and performance parameters

The SUN-15K-SG05LP3-EU-SM2 delivers a robust 15 kW of rated AC power with a higher peak capability, while its three‑phase construction and dual MPPT inputs provide flexible harvesting from PV arrays. Its per‑phase output can be loaded unevenly, up to 50% of the rated power per phase, which supports irregular load profiles common in residential and light commercial settings. The system uses two MPPT inputs to optimize energy capture from a wide photovoltaic voltage range and employs a transformer‑isolated design to enhance safety and reliability.

• Three‑phase hybrid inverter with nominal AC power 15 kW and maximum AC power up to 16.5 kW
• Maximum DC power rated at 22.5 kW; nominal DC voltage 550 V; maximum DC input voltage 800 V
• Min DC voltage to start feeding in: 160 V; maximum DC current: 56 A
• MPPT: 2 independent trackers; 3 strings per MPPT; MPPT voltage range 160–650 V
• Efficiency: Maximum efficiency 97.6%; Euro (operational) efficiency 97%
• Frequency: 50/60 Hz, Power Factor: 1
• Number of Phases: 3; Output per phase can be loaded independently up to 50% of rated power
• Maximum AC current: 21.8 A; Nominal AC current: 21.8 A
• Dimensions: 750 mm (H) x 456 mm (W) x 268.5 mm (D); Weight: 50.6 kg
• Operating temperature range: -40 to +60 °C; Protection Class: IP65; Humidity: 0–100%
• Maximum Altitude: 3000 m; Cooling: Intelligent Air Cooling

Battery and backup capabilities

The SUN‑15K‑SG05LP3‑EU‑SM2 is designed to pair with 48 V low‑voltage battery banks, with transformer‑isolated design enabling safe parallel operation of multiple batteries. It supports charging and discharging currents up to 350 A and provides six distinct time periods for battery charging and discharging, enabling structured energy shifting and backup sequencing. The unit also accommodates energy storage from a diesel generator, expanding resilience for critical loads during grid interruptions. Up to ten inverters can operate in parallel to scale storage capacity to match larger or more dynamic installations.

• 48 V battery compatibility with transformer‑isolated design for safe dual‑bank operation
• Parallel connection: up to 10 units for higher storage and output capacity
• Max charging/discharging current: 350 A for responsive energy management
• Six programmable battery charging/discharging periods for load shifting and peak shaving
• Ability to store and use energy from a connected diesel generator to enhance reliability