This is an original ABB / Power-One Aurora electronic board, designed for both single-phase and three-phase photovoltaic inverters in the 8.0 kW, 10.0 kW, and 12.5 kW series.

The module serves as the interface between the inverter and the electrical grid, integrating advanced filtering, protection, and switching functions through high-voltage relays.

Identified as a Filter & Relay Board (PN 3G83 Pb-Free), it is a key component for proper inverter operation on the AC side.

⚙️ Main Functions

• EMI/RFI filtering on the AC line
• Grid connection/disconnection via power relays
• Overvoltage protection (MOVs and protection circuits)
• Electrical signal stabilization and conditioning
• Interface between inverter and grid (GRID)

🔌 Technical Features

• PCB Model: 3G83 Pb-Free
• Compatibility: Aurora inverters up to 12.5 kW
• High-voltage relays (up to ~800–850 V)
• Inductors and ferrite chokes for filtering
• Power capacitors and anti-interference components

Connectors:

• DC Inputs (IN1 / IN2)
• GRID (AC output connection)

🔧 Key Components (Visible)

• Power relays (grid switching)
• Toroidal copper inductors (filters)
• High-capacity film capacitors (blue/grey)
• Varistors (surge protection)
• Control and safety electronic circuits

🌐 Role within the Inverter

This board performs a critical role:

• Ensures safe connection to the electrical grid
• Filters disturbances and harmonic noise
• Protects both inverter and electrical system

Aurora inverters are based on a modular architecture, where each board manages a specific function to improve reliability and simplify maintenance.

⚠️ Common Faults Addressed

This board is often involved in inverter errors such as:

• Grid faults
• Relay / synchronization errors
• Error codes: E013,E019,E020,E021,E023,E028,E031,W003,

🏭 Compatibility

• ABB Aurora PVI-8.0
• ABB Aurora PVI-10.0
• ABB Aurora PVI-12.5
• Versions: OUTD / TL

📊 Applications

• Photovoltaic inverter repair
• Replacement of faulty boards
• Maintenance of residential and industrial PV systems

📦 Product Condition

• Used / refurbished board
• Tested (if verified)
• Sold as a technical spare part