Solis S6-EH3P12K02 12kW Three-Phase Hybrid Inverter

This is a high power three-phase hybrid inverter, designed for large houses, guesthouses and workshops. One important thing to know before ordering: although it is three-phase, this model works with low voltage batteries, of 48 V, not with high voltage batteries - so the battery bank must be chosen accordingly. It also has a separate input for a generator, which makes it suitable where the grid is missing for hours on end. When the power goes out, it takes over the supply of the house from the battery or from the generator, almost without interruption.

The photovoltaic side accepts 19,2 kW of usable power, that is a generous roof or a ground structure. The maximum battery charge and discharge current is 250 A, which allows a large 48 V bank to be filled quickly during the good sun hours. The backup output delivers 12 kW, withstands 200% overload for 10 seconds for starting motors and switches in under 10 ms; there are two backup ports, so that you can separate the critical loads from those that can wait. The generator is connected directly, up to 12 kW three-phase, and for larger installations up to 6 inverters can be connected in parallel. The device is large and heavy, 430 x 660 x 295 mm and 42 kg, with an IP66 enclosure and redundant intelligent ventilation, so it is mounted on a solid wall, with ventilation space around it, between -40 and +60 C.

PV input: 1.000 V maximum, 550 V nominal, start-up at 160 V, MPPT range 200-850 V, 2 MPPTs with 20 A, respectively 40 A (30 A / 50 A short circuit current) and a maximum of 3 strings. Li-ion or lead-acid battery, 40-60 V, maximum charge/discharge current 250 A, CAN/RS485 communication. Grid connection 3/N/PE, 380/400 V, 50/60 Hz, 18,2 A (17,3 A at 400 V), THDi below 3%, AC input range 323-460 V with 27,3 A maximum current, AC pass-through on backup up to 50 A; generator input max. 12 kW, 3/N/PE 380/400 V. Maximum efficiency 97,6%, European efficiency 97,0%, transformerless topology, maximum altitude 4.000 m; safety IEC/EN 62109-1/-2, EMC IEC/EN 61000-6-1/-3.

Who it suits

Suitable for a large house, guesthouse or farm with a three-phase connection and an unstable grid, that already has or wants a 48 V battery bank and, possibly, a backup generator.

Terms explained

• Low voltage (48 V) on the battery: The battery bank works around 48 V, as in small systems; this inverter does not accept high voltage batteries, of a few hundred volts.
• Two backup ports: Two separate outputs for the period without grid: one for what must always run (fridge, boiler, internet), the other for loads that can be sacrificed if the battery drops.
• Inverters in parallel: Several units connected together work as a single, more powerful one; here up to 6 can be connected.

Technical specifications

Recommended applications

• Large houses and three-phase guesthouses with 48 V storage
• Hybrid systems with generator and dual backup
• Farms and workshops with an unstable grid
• Installations expandable through up to 6 inverters in parallel

Warranty

10 year standard manufacturer warranty

Technical details

Specifications confirmed from the manufacturer's datasheet

S6-EH3P12K02-NV-YD-L is the 12 kW Solis three-phase hybrid inverter. To keep in mind: although it is three-phase, this model works with LOW voltage batteries (40-60 V, 48 V nominal), not with high voltage batteries. The PV input accepts 19,2 kW of usable power, 1.000 V maximum, 550 V nominal, start-up at 160 V and an MPPT range of 200-850 V; it has 2 MPPTs with 20 A, respectively 40 A (30 A / 50 A short circuit current) and a maximum of 3 strings.

The battery can be lithium-ion or lead-acid, with a maximum charge/discharge current of 250 A and CAN/RS485 communication. The grid output is 3/N/PE, 380/400 V, 50/60 Hz, 18,2 A (17,3 A at 400 V), THDi below 3%; the AC input range is 323-460 V, with 27,3 A maximum current. The inverter has a dedicated generator input (up to 12 kW, 3/N/PE 380/400 V) and a backup output of 12 kW with 200% overload for 10 s, switching under 10 ms and AC pass-through of up to 50 A. It supports two backup ports and up to 6 units in parallel.

Maximum efficiency 97,6%, European efficiency 97,0%. Transformerless topology, IP66 enclosure (430 x 660 x 295 mm, 42 kg), cooling with redundant intelligent ventilation, -40...+60 C, 4.000 m altitude. Safety IEC/EN 62109-1/-2, EMC IEC/EN 61000-6-1/-3.