Deye SUN-15K-SG05LP3-AU 15kW Three Phase Hybrid Inverter

Deye SUN-15K-SG05LP3-AU | 15kW Three Phase Hybrid Inverter · 2 MPPT

Three-phase hybrid power for homes and businesses that run on everything

The Deye SUN-15K-SG05LP3-AU is a 15kW three-phase hybrid inverter that manages solar generation, battery storage, grid interaction, and backup in one IP65-rated unit. Two independent MPPT channels accept up to 22,500W of PV input, a 280A battery interface handles fast charge and high-draw discharge, and 100% unbalanced output across phases means the inverter adapts to your load not the other way around.

For NZ three-phase properties building serious solar-plus-storage systems larger homes, farms, workshops, and commercial sites this is the hybrid brain that ties panels, batteries, grid, and generator together without compromise.

Dual MPPT two trackers across a wide voltage window

Two independent MPP trackers (2+2 strings) optimise four strings of panels simultaneously within a 160–650V MPPT range at above 99% MPPT efficiency. That wide voltage window accommodates long strings, high-voltage panels, and arrays split across different orientations giving installers real design flexibility.

Two trackers on a three-phase inverter is the practical sweet spot: enough independence to handle a north/west split or partial shading, without the cost of three separate channels. For a single large roof plane, one tracker per half of the array keeps everything balanced.

22,500W of PV input 1.5× oversizing

The inverter accepts up to 22,500W of solar panel input on a 15kW AC output a 1.5× DC-to-AC ratio that captures significantly more energy during the shoulder hours and overcast conditions when panels produce below rated output. Over a full NZ year, that oversizing translates directly into more kWh stored and consumed.

97.6% peak efficiency

At 97.6% maximum conversion efficiency, the SUN-15K wastes very little in the DC-to-AC-to-battery flow. For a three-phase hybrid inverter juggling solar, storage, and grid simultaneously, that’s a strong number and it compounds into real savings over a decade of daily cycling.

100% unbalanced output real-world load handling

Each phase independently delivers up to 50% of rated power (7.5kW per phase), and the inverter supports 100% unbalanced output. In practice, that means a heavy load on one phase a workshop compressor, a heat pump, a large appliance doesn’t force the other phases to match. The inverter feeds power where it’s needed, adapting to the actual load distribution across your three-phase supply.

280A battery throughput

The battery interface is built for serious storage:

• 280A max charge / 280A max discharge — among the highest in its class
• 48V low-voltage battery support — lead-acid and lithium-ion (LV)
• Self-adaptive BMS communication — automatic compatibility with your battery’s management system
• Multiple batteries in parallel — scale storage as needs grow
• 6 custom time-of-use periods for charge/discharge scheduling
• Transformer isolation design — electrical safety between battery and AC circuits

The 6 time periods let you programme the system to charge from solar during the day, discharge during evening peak pricing, and hold a reserve for overnight backup extracting maximum value from every kWh.

Scales to 10 units in parallel

Connect up to 10 SUN-15K units in parallel for on-grid and off-grid operation scaling the system to 150kW for commercial sites, multi-building properties, or phased installations that start small and grow. Each unit operates independently while the parallel system balances load across them.

2× peak power for 10 seconds

In off-grid mode, the inverter delivers twice its rated output (30kW) for up to 10 seconds enough surge headroom to handle compressor start-ups, motor inrush, and heavy transient loads that would trip a lesser inverter.

AC-coupling for existing solar

Already running solar with a separate inverter? The SUN-15K supports AC-coupling, adding battery storage and hybrid management to your existing system without replacing what’s already installed. Retrofit storage, don’t rebuild a practical upgrade path for properties that went solar before batteries were viable.

Generator integration

The inverter accepts energy from a diesel or petrol generator, storing it in batteries for later use. For off-grid NZ properties, rural sites, or situations where solar and grid both fail, generator input keeps the system charged and the house running.

70A continuous AC passthrough

A 70A AC passthrough rating ensures substantial grid power can flow through the inverter to your loads even when solar and battery aren’t contributing important for three-phase sites with high baseline consumption.

IP65 outdoor-rated

The IP65-rated enclosure handles dust, rain, and outdoor exposure, so the inverter mounts on an exterior wall, in a carport, or in an outbuilding without needing a separate weatherproof cabinet. At 50.6kg in a commercial-grade housing, it’s built for permanent installation.

Specifications

Ideal for

• Large three-phase NZ homes — heat pumps, EV charging, workshops, and high-consumption households
• Farms and rural properties — three-phase supply, generator backup, off-grid capable
• Commercial solar-plus-storage — parallel to 150kW, 100% unbalanced output, serious battery throughput
• Retrofitting batteries onto existing three-phase solar — AC-coupling adds storage without replacing your current inverter
• Off-grid and hybrid off-grid sites — generator + solar + battery for complete independence
• Phased installations — start with one inverter, parallel more as the site grows

Your Deye hybrid options at Cybotix Energy

The 12kW single-phase suits large homes on single-phase supply. The 15kW three-phase suits properties with three-phase power where balanced distribution and higher total throughput matter. Your installer will recommend based on your supply type and load profile.

The hybrid brain your three-phase system needs

The SUN-15K-SG05LP3-AU manages solar, batteries, grid, and generator in one weatherproof unit with the output, battery throughput, and parallel scalability to match anything a three-phase NZ property demands. For help specifying the right hybrid inverter for your system, talk to the Cybotix Energy team we’ll match it to your supply, your panels, your batteries, and your energy goals.