Growatt SPH Hybrid Inverter and ARK Battery Setup Guide

This guide details the essential steps for setting up Growatt SPH Hybrid Inverters with Growatt ARK Modular Lithium Batteries. It covers critical aspects such as battery communication, wiring, and safety procedures for both single-phase and three-phase residential solar energy storage installations.

The Growatt SPH series includes the SPH 3000-6000 for single-phase applications and the SPH 4000-10000TL3 for three-phase systems. These inverters integrate seamlessly with Growatt ARK-2.5L-A1 (Low Voltage) and ARK-2.5H-A1 (High Voltage) modular lithium batteries.

1. Understanding Growatt SPH and ARK Battery Integration

The Growatt ARK battery system utilizes modular lithium iron phosphate modules, supporting flexible capacity expansion for various residential needs. This modular architecture allows for scalable energy storage solutions.

A dedicated communication link is essential for the inverter and battery to operate correctly. The Growatt SPH inverter and ARK battery BMS communicate using a shielded twisted-pair cable on dedicated ports. This ensures reliable data exchange for battery management.

2. Essential Setup Procedures

Proper installation and configuration are crucial for the safe and efficient operation of your Growatt hybrid system.

2.1. Battery Module Assembly and Addressing

When stacking ARK-2.5H high-voltage battery modules, ensure the High-Voltage Controller (HVC) module is securely locked on top. This HVC module is vital for the high-voltage battery stack's operation.

Before powering up the inverter, set the DIP switches on the battery base module to establish communication addressing. Correct DIP switch configuration is necessary for the inverter to recognize and communicate with the battery system.

2.2. BMS Communication Wiring

Connect communication lines to the designated CAN-H and CAN-L pins on the inverter battery management socket. This connection facilitates the CAN/RS485 communication between the inverter and the ARK battery's Battery Management System (BMS). Always use a shielded twisted-pair cable for this connection to minimize interference.

2.3. EPS Backup Port Wiring

The integrated EPS backup port provides automatic power switchover to essential circuits during utility blackouts. This feature ensures critical loads remain powered during grid outages, offering reliable backup power.

2.4. Protective Earthing

For safety, bond the inverter chassis ground and ARK battery metal base to the main installation earthing terminal. This protective earthing is a critical safety measure against electrical hazards.

3. Commissioning and Monitoring

Once the physical installation is complete, the system needs to be commissioned and can then be monitored.

ShinePhone Mobile App Setup

You can commission inverters, configure battery charge parameters, and monitor performance wirelessly via the ShinePhone app. This mobile application provides a convenient interface for system management and performance tracking.

4. Safety Protocols

Adhering to safety protocols is paramount when working with solar energy systems.

Safe DC Battery Disconnect

To safely disconnect the DC battery, switch off the DC battery circuit breaker and wait at least 5 minutes for internal capacitors to discharge. This waiting period is crucial to prevent electrical shock from residual energy stored in the capacitors.

General Safety and Grid Compliance

Growatt inverters comply with international grid connection and anti-islanding safety standards. This ensures the inverter safely disconnects from the grid during outages, protecting utility workers and preventing damage to the system. The entire system is engineered for single-phase and three-phase residential solar energy storage installations worldwide.