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:
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PCB Code: 3G83-99-1
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Mounted on Heatsink: Yes (with threaded holes for secure installation)
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Large Film Capacitors:
• 6 total (Iskra, Multicomp – white, gray, blue)
• Marked with OKQC quality stickers and serials
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Circuit Labels: BST, BST2, D1, J2, J5, etc.
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High-Current Switching Stage:
• IGBT Transistor (K5T1202) – 1200V / 45A, IXYS
• SiC Schottky Diode (C3D10070) – 1000V / 10A
- Low forward voltage drop (~1.7V)
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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
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Robust Soldered IGBT Pairing:
• Copper busbars + mechanical clamps
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Inductors: Visible toroidal chokes for filtering
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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.
