📝 Description

Used product. Original ABB / Power-One Aurora electronic board, identified as Filter & Relay Board – PN 3G83 Pb-Free, designed to manage the interface between the photovoltaic inverter and the electrical grid. The board integrates EMI/RFI filtering, switching via power relays, overvoltage protection and signal conditioning functions on the inverter AC side.
The 3G83 platform is documented for three-phase Aurora/Power-One inverters of the Stage 1 generation, particularly PVI-10.0-TL-OUTD and PVI-12.5-TL-OUTD; compatibility with other versions or 8 kW-class models must be verified by comparing the P/N and revision of the original board.

⚙️ Technical Specifications

• Manufacturer: ABB / Power-One
• Type: Filter & Relay Board
• PCB: 3G83 Pb-Free
• PCB marking: 3G83
• Visible marking: 9F53G832244G – Rev. 09
• Application: Aurora / Power-One photovoltaic inverters
• Main function: electrical interface between inverter and grid
• Section: AC grid filtering, switching and protection
• Inputs: DC INPUTS – IN1 / IN2
• Grid interface: GRID
• Communications: RS485(A) / RS485(B)
• Connectors: COMM RS485, ALARM and service I/O
• Technology: Pb-Free components
• Power relays: high-voltage relays for grid connection management
• Filtering: toroidal inductors, coils/ferrites and film capacitors
• Protection: MOV varistors and overvoltage suppression circuits.

⚡ Function in the Electrical System

The 3G83 forms a fundamental part of the inverter's AC interface. The filtering circuits attenuate electromagnetic disturbances generated by the power conversion stage, while the grid relays allow controlled connection and disconnection of the inverter from the electrical grid.
The board also includes the GRID paths, protection circuits and communication and control interfaces. Power-One/ABB documentation associates P/N 3G83 with the PVI-10.0-TL-OUTD and PVI-12.5-TL-OUTD Stage 1 platforms.

🔧 Visible Components on the Board

The photographs clearly show:

• Power relays with blue housings, used for grid switching
• Toroidal inductors with copper windings
• Coils and ferrite filters for noise suppression
• Numerous power film capacitors
• Varistors and protection components
• Transformers and auxiliary power supply circuits
• Control and signal-conditioning components
• IN1 / IN2 terminals
• GRID terminal block
• RS485(A) / RS485(B) ports
• COMM RS485 and ALARM connectors
  The board is installed on a metal support plate, complete with the mounting elements visible in the photographs.

🌐 Compatibility

The documented compatibility mainly includes:

• ABB / Power-One Aurora PVI-8.0-TL-OUTD
• ABB / Power-One Aurora PVI-10.0-TL-OUTD
• ABB / Power-One Aurora PVI-12.5-TL-OUTD
• Corresponding Stage 1 versions compatible with the 3G83 architecture.
  The P/N 3G83 identifies the Stage 1 platform, while Stage 2 models use different P/N codes, such as 3N81 / 3N82. For this reason, it is important to compare the board code and hardware revision before replacement.
  For the range commercially indicated as 8.0 / 10.0 / 12.5 kW, compatibility must therefore be verified against the specific inverter model and original board; not all 8 kW models should automatically be considered compatible with the 3G83.

⚠️ Associated Errors and Anomalies

The board is commercially associated with repair interventions relating to various malfunctions of the grid interface and relay/filter section, including codes:
E013, E019, E021, E023, E026, E029, E030, E031, E032 and W003.
These codes must not, however, be interpreted as proof that replacing the 3G83 alone will necessarily resolve the fault: the same error may originate from other inverter circuits. The board must be diagnosed together with the control board, DC section, wiring, sensors and grid circuit.

🏭 Applications

Technical replacement intended for:

• Repair of Aurora / Power-One / ABB photovoltaic inverters
• Replacement of a faulty Filter & Relay Board
• Restoration of the grid interface circuit
• Maintenance of industrial photovoltaic inverters
• Recovery of inverters with anomalies in relay switching, filtering or grid connection

🛡️ Safety and Product Condition

The board is used and shows normal signs of use and handling. Some handwritten markings on the components are visible, while the main components and connectors are present.
Electrical operation cannot be certified from visual inspection alone. To sell it as tested and working, a bench test or test directly on a compatible inverter is required, checking at least relays, insulation, continuity of power paths, filters, capacitors and communications.
⚠️ This is a board belonging to the power section of a photovoltaic inverter. High voltages and residual capacitor charges may be present even after disconnection. Installation, diagnosis and replacement must be carried out exclusively by qualified personnel and according to the manufacturer's safety procedures.

📦 Package Contents

• 1 × ABB / Power-One Aurora Filter & Relay Board
• PN 3G83 Pb-Free
• Metal support plate as visible in the photographs
• Components and connectors installed on the board.

🚀 Final Description

The ABB / Power-One Aurora 3G83 Pb-Free is an original Filter & Relay Board for Aurora photovoltaic inverters, primarily dedicated to AC grid interface management, noise filtering, electrical protection and switching via power relays.
The presence of the DC INPUTS IN1/IN2, GRID, RS485(A/B), COMM RS485 and ALARM sections, together with the numerous toroidal inductors, film capacitors, varistors and power relays, identifies a complete interface board for the modular architecture of Power-One/ABB inverters. The P/N 3G83 is documented for the PVI-10.0-TL-OUTD and PVI-12.5-TL-OUTD Stage 1 inverters.
It is a specific technical replacement part for the repair of discontinued Aurora inverters, but compatibility must always be verified through the inverter model, P/N, hardware revision and original configuration.