Solis 15kW Three Phase Hybrid Solar Inverter 48V | S6-EH3P15K02-NV-YD-L

The Solis S6-EH3P15K02-NV-YD-L is a 15kW three phase hybrid inverter from the S6 Solarator range, built for larger homes, farms and small commercial sites storing solar energy in 48V low voltage batteries. It accepts up to 24kW of usable PV input, works with a range of lithium and lead acid batteries, and switches to backup power in under 10ms if the grid fails.

Three phase hybrid inverter with 48V battery support

• Output, 15kW rated power with 15kVA maximum apparent power on grid and backup sides.
• PV input, up to 24kW usable across 2 MPPTs and 4 strings, 40A per MPPT, 20A per string.
• Battery input, 48V (40V to 60V) with up to 290A charge and discharge current across two battery ports.
• Backup switchover, under 10ms, with 200% overload for 10 seconds to start motors, pumps and air conditioners.
• Unbalanced output, up to 50% of rated power (7.5kW) on any single phase.
• Enclosure, IP66 with fan cooling, operating from -25°C to +60°C.

How it works

The inverter manages solar, battery, grid and generator from a single unit. Solar supplies the property first and charges the battery, with the grid topping up any shortfall. If the grid fails, the backup output keeps selected circuits running, and Smart Load management lets you prioritise which loads stay on to extend battery runtime. A customisable backup level holds a battery reserve for outages.

PV only off grid operation is supported too, so a system can run from solar alone with battery storage added later. A generator can be connected with automatic control for extended outages, and both DC and AC coupling let an existing PV array keep charging the battery when the site is off grid. Up to six units can run in parallel, with a parallel switchover time under 20ms. Communication includes CAN and RS485 for the battery BMS, RS485 for the energy meter, DRM, a digital input and four digital outputs, with 2G, 3G or 4G available as an option.

Applications

• Large residential solar PV systems on a three phase supply with 48V battery storage
• Farms, workshops and small commercial sites needing backup for critical loads
• Adding battery storage to an existing PV array by AC coupling
• Off grid and weak grid sites with generator support
• Expandable installations using up to 6 inverters in parallel

Installation notes

This inverter must be installed and commissioned by a qualified electrician or MCS certified solar installer, in line with BS 7671 and the Solis installation manual. It weighs 42kg, so plan for a suitable wall and a two person lift. The IP66 enclosure suits indoor or outdoor wall mounting within the -25°C to +60°C range, up to 4000m altitude, with the cooling fans kept clear.

The 48V battery input runs up to 290A, so cables, fusing and DC isolation must be sized accordingly, and the battery BMS must communicate over CAN or RS485. This is a three phase unit, not suitable for single phase supplies or high voltage batteries, and no single phase may carry more than 7.5kW.

What's included

• 1 x Solis S6-EH3P15K02-NV-YD-L 15kW three phase hybrid inverter