Solis S6 Three Phase High Voltage Hybrid Inverter Setup Guide

Key Takeaways

• Solis S6-EH3P inverters are designed for three-phase high-voltage battery storage systems, compatible with Pylontech Force-H2.
• BMS communication requires a dedicated CAN cable connection to the inverter and specific 500kbps baud rate DIP switch settings for Pylontech Force-H2.
• Essential circuits connect to a dedicated EPS backup port for automated off-grid power during outages.
• Always follow the safe DC battery disconnect procedure, waiting at least 5 minutes for internal capacitor discharge.

Setting Up Your Solis S6 Three-Phase Hybrid Inverter

This guide details the setup for the Solis S6-EH3P(5-10)K-H-EU three-phase high-voltage hybrid inverters with Pylontech Force-H2 storage. It covers essential wiring, communication, and commissioning steps to ensure a safe and functional installation. The Solis S6 three-phase hybrid inverters interface with high-voltage lithium battery storage for maximum round-trip efficiency.

Understanding the Solis S6-EH3P System

The Solis S6-EH3P(5-10)K-H-EU is engineered for both residential and commercial off-grid and grid-parallel energy storage systems worldwide. It is compatible with standard single-phase and three-phase electrical distribution systems globally. A key feature is its ability to deliver up to 100% unbalanced AC power output per phase, supporting asymmetric household and commercial loads. The system also includes certified anti-islanding protection, complying with international microgeneration safety and grid protection standards.

Essential Wiring and Connections

Proper wiring is critical for the safe and efficient operation of your Solis S6 inverter and Pylontech Force-H2 battery system.

Battery Communication (BMS)

The inverter requires a dedicated communication link to the battery management system (BMS) of the Pylontech Force-H2.

• Connect the master battery BMS CAN communication cable to the dedicated BMS port on the inverter.
• For Pylontech Force-H2 storage, ensure the CAN BMS DIP switches on the battery master controller are set to 500kbps baud rate. This setting is crucial for correct communication between the battery and the inverter.

Earth Bonding

Safety earthing is a mandatory step for all electrical installations.

• Bond inverter chassis ground and battery metal enclosure to the main installation earthing terminal. This ensures protection against electrical faults.

EPS Backup Wiring

The Solis S6-EH3P includes a dedicated port for essential loads during a grid outage.

• Essential circuits connect to the dedicated EPS backup output for automated off-grid power during outages. This port provides power to critical loads when the main grid supply is unavailable.

Commissioning and Monitoring

The Solis S6 inverter is commissioned and monitored using the SolisCloud App.

Mobile Commissioning

• Commissioning, operating parameters, and cloud monitoring are configured via the SolisCloud App. This application allows for local setup via Bluetooth and remote management.
• The system supports remote firmware and configuration management via the VRM cloud portal, enabling diagnostics and updates from a distance.

Safety Procedures

Always prioritise safety when working with electrical systems, especially high-voltage battery storage.

Safe DC Battery Disconnect Procedure

Before performing any maintenance or wiring changes on the battery or inverter, follow this procedure:

• Switch off the DC battery isolator.
• Wait at least 5 minutes for internal capacitors to discharge. This waiting period is critical to prevent electric shock from residual energy stored in the inverter's capacitors.

What you can check yourself, and what you cannot

You can perform basic checks and monitoring yourself using the SolisCloud App. This includes reviewing operating parameters, energy production, and battery status. You can also visually inspect wiring for obvious damage or loose connections.

However, any work involving opening the inverter's enclosure, modifying internal wiring, or changing grid-protection settings must be carried out by an accredited installer. Grid-protection settings are set by an accredited installer and changing them can breach the connection agreement. For your safety and to maintain warranty, do not attempt to alter internal components or wiring yourself.

What the published sources do not tell you

While official documentation provides specific setup instructions, it does not detail the exact pinout configurations for the RJ45 BMS communication port beyond stating it's a CAN connection. Specific cable types or custom wiring diagrams for non-standard installations are also not covered. Furthermore, detailed troubleshooting steps for communication errors or specific inverter fault codes are typically found in the full installation manual, which is not provided here. official documentation also does not specify the maximum number of Pylontech Force-H2 battery modules that can be connected in series or parallel, or the specific voltage ranges for the high-voltage battery architecture. These details are crucial for system design and would be found in the comprehensive product manuals.