This is an original, used DC power board for ABB Aurora / Power-One inverters with output ratings of 10.0kW to 12.5kW. Identified by PCB number 3G83-99-1, the board manages DC-side energy buffering, filtering, and IGBT switching.

It comes mounted on an aluminum heatsink, with six large film capacitors (Iskra, Multicomp, and others), high-current bus connections, and soldered IGBT pairs fixed via thermal clamping.

🛠️ Critical Notice:
Failure of this board may damage the logic (main control) board, and vice versa. Always verify both components together before installation or replacement.

Technical Features & Components:

• PCB Code: 3G83-99-1
• Mounted on Heatsink: Yes (with threaded holes for secure installation)
• Large Film Capacitors:
  • 6 total (Iskra, Multicomp – white, gray, blue)
  • Marked with OKQC quality stickers and serials
• Circuit Labels: BST, BST2, D1, J2, J5, etc.
• High-Current Switching Stage:
  • IGBT Transistor (K5T1202) – 1200V / 45A, IXYS
  • SiC Schottky Diode (C3D10070) – 1000V / 10A
• Low forward voltage drop (~1.7V)
• Ultra-fast recovery (<20ns) – ideal for high-frequency inverter operation
  • These two components form a high-efficiency pair in the BST2 section, with the SiC diode acting as a freewheeling diode for the IGBT
• Robust Soldered IGBT Pairing:
  • Copper busbars + mechanical clamps
• Inductors: Visible toroidal chokes for filtering
• Connectors: J2, J5 (signal/control), high-current solder pads

✅ Key Benefits:

✔ Ensures DC energy conditioning and switching stability
✔ Integral to safe operation of inverter output stage
✔ Professionally refurbished, cleaned, and tested
✔ Designed to operate under high current and thermal load

🔗 Compatibility:

✔ ABB / Power-One Aurora
• PVI-10.0-OUTD
• PVI-12.5-OUTD

📦 Includes: DC board mounted on original heatsink
🏷️ Condition: Used 
⚠️ Installation Note: Always check compatibility and test the inverter’s logic board to avoid cross-damage.

🚀 Restore your inverter’s core DC functionality with this original ABB power board — professionally restored for reliability.