Solis S6-EA3P5KAA-NV-ND-H5kW three-phase AC-coupled inverter for high-voltage batteries

Overview

The S6-EA3P5KAA-NV-ND-H is the 5kW model of the Solis three-phase AC-coupled series for high-voltage batteries. Installed next to an existing grid-tied PV inverter, it charges a 120–600V lithium battery with up to 5kW and 25A and returns the energy to the home when consumption exceeds production. It has no PV input or backup output. The included Eastron meter provides the power-flow data for self-use, time-of-use and peak-shaving control.

• 5, 6, 8 and 10kW, 3/N/PE 380/400V
• HV lithium battery 120–600V, up to 50A
• Retrofit to existing grid-tied PV systems
• Self-use, time-of-use and peak-shaving control
• Six time-of-use charge/discharge windows
• IP66, natural cooling, Eastron meter included

How it works

The S6-EA3P(5-10)KAA-NV-ND-H is a three-phase battery inverter connected on the AC side of a home. Solis designed it to turn an existing grid-tied PV system into a storage system with little change to the installation: the PV inverter keeps working, while the AC-coupled unit charges a high-voltage lithium battery from surplus power and discharges it to cover consumption. It has no PV input and no backup output.

An Eastron SDM630MCT three-phase meter with CTs is supplied and can be placed at the grid connection point or on the load side. The battery port accepts 120–600V with up to 25A on the 5–6kW models and 50A on the 8–10kW models, and the battery charge and discharge efficiency to AC reaches 97.50%.

Operating modes

Self-use mode is the recommended setting: surplus PV energy goes into the battery and is used when production falls below demand. Six time-of-use windows allow charging and discharging to follow tariff periods, optionally using grid power. In peak-shaving mode the inverter limits the power drawn from the grid to a set value and keeps a reserve state of charge for peaks. Two RS485 ports support remote upgrades and virtual power plant control.

Installation and compatibility

The unit is wall-mounted, weighs 24.3kg (5–6kW) or 26.9kg (8–10kW) and is cooled by natural convection; output derates above 45°C. Keep at least 200mm between inverters or other objects and 200mm below the unit. Battery and AC are connected with quick-connect plugs and a CAN cable is supplied for the battery BMS.

Compatible batteries are listed in the Solis high-voltage matching list, which includes BYD Battery-Box Premium HVS/HVM, Pylontech Force H1/H2, Dyness Tower and SolisStorage FlexHome-H. The datasheet lists VDE-AR-N 4105, EN 50549-1/-10 and Nordic EN 50549 variants as grid codes; CEI 0-21 is not listed.

Monitoring

Status is shown by LED indicators, and commissioning is done over Bluetooth with the SolisCloud app, where battery model, meter type and position, grid code and work mode are set. Wi-Fi, cellular or LAN data loggers are optional for remote monitoring and firmware updates, and Solis provides a battery healing function for battery maintenance.

Questions and answers