Solis S6-EH3P125K10-NV-YD-H Inverter, Three-Phase, Hybrid, 125kW, High Voltage

This is an industrial-class hybrid inverter, that is the central piece of equipment linking a large panel array, a battery energy store and the grid of a hall or a factory. Its role is to use its own energy first, to put the surplus aside and to keep supplying the building when the grid goes down. It also has a load prioritisation function, that is it knows which equipment has to be kept running first when the available energy is limited.

It accepts up to 240 kW of panels for 125 kW delivered, which means the generator can be oversized almost twofold: the output stays good in cloudy weather too, in the morning and in the evening, roughly, depending on the location. The 10 MPPT trackers with a maximum of 20 strings allow the roof to be divided into many zones, useful on halls with complicated shapes or with partial shading. Storage is on two independent ports, with 100 A each, therefore 200 A in total, and the 125 kW backup output can keep a whole production line running, with peaks of twice the rated power for 200 ms for starting motors and switchover in under 10 ms. It is a heavy piece of equipment, of 170 kg and 1174 x 814 x 400 mm, which is installed with mechanical means, but the IP66 enclosure allows outdoor placement, on a platform or on a technical wall.

Output 3/N/PE 220/380 V or 230/400 V, 50/60 Hz, 125 kW / 125 kVA, maximum output current about 190 A. PV: up to 240 kW usable power, 1000 V maximum, 600 V nominal, start-up from 180 V, 10 MPPTs in the 150-950 V range, a maximum of 20 strings, 42 A per MPPT. Two HV lithium-ion battery ports 300-950 V, 100 A + 100 A; backup 125 kW with 2x overload for 200 ms and switchover under 10 ms, with intelligent load prioritisation. Maximum efficiency 97.6%, European 97.2%, battery-to-AC efficiency 97.0%; IP66, 1174 x 814 x 400 mm, 170 kg, -25...+60 degrees C; CAN, RS485 at 115200 and Ethernet communication, optionally WiFi, cellular or LAN; paralleling up to 6 units.

Who it suits

Suitable for production halls, cold stores or photovoltaic parks with storage, where up to 240 kWp are installed per inverter and the aim is to shave the consumption peaks.

Terms explained

• DC oversizing (DC/AC ratio): Installing a panel power greater than the inverter's power; a little is lost at sunny midday, but more is gained during the rest of the day and in the months with weak sun.
• Peak shaving: Using the battery exactly at the moments when consumption rises suddenly, so that you do not exceed the power contracted from the supplier and avoid additional costs.
• Load prioritisation: The function by which the inverter supplies first the equipment defined as essential and leaves for last that which can wait, when the available energy is not enough for everything.

Technical specifications

Recommended applications

• C&I industrial projects with high-capacity storage
• Reduction of consumption peaks (peak shaving) in production halls
• Microgrids and systems with intelligent load prioritisation
• Photovoltaic parks with DC oversizing up to 240 kWp per inverter

Technical details

Series-level specifications — valid for the product family

The Solis S6-EH3P125K10-NV-YD-H is part of the commercial and industrial series S6-EH3P(75-125)K10-NV-YD-H of three-phase hybrid inverters with high-voltage batteries. The rated AC power is 125 kW, respectively 125 kVA apparent, with a three-phase 3/N/PE output at 220/380 V or 230/400 V, 50/60 Hz and a maximum output current of approximately 190 A.

The photovoltaic side accepts up to 240 kW of usable PV power, at a maximum voltage of 1000 V, a nominal voltage of 600 V and start-up from 180 V. The 10 MPPT trackers work over the very wide 150-950 V range, with a maximum of 20 input strings and 42 A on each MPPT, which allows a DC/AC ratio of almost 2 and a fine segmentation of the photovoltaic generator.

Storage is on two independent battery ports, for 300-950 V lithium-ion batteries, with 100 A on each port (200 A in total). The backup output delivers 125 kW, with an overload capacity of 2 times the rated power for 200 ms and switchover to backup mode in under 10 ms. The inverter includes the intelligent load prioritisation function.

The maximum efficiency is 97.6%, and the European one 97.2%; the battery charge/discharge to AC efficiency is 97.0%. The enclosure has IP66 protection, dimensions of 1174 x 814 x 400 mm and a weight of 170 kg, with a thermal range of -25...+60 degrees C. Communication includes CAN, RS485 (115200) and Ethernet, with optional WiFi, cellular or LAN modules, and the system supports the paralleling of up to 6 units.