Original Power Supply Board removed from a KACO Powador 16.0 TR3 INT photovoltaic inverter. This electronic module is designed to manage power distribution and auxiliary voltage generation within the inverter, supporting the operation of control circuits, monitoring systems, and power conversion stages.
As one of the inverter’s key electronic assemblies, the board incorporates industrial-grade components responsible for power conditioning, voltage regulation, EMI filtering, and supply management for the DC/AC conversion system.
Manufactured using high-reliability industrial components, this board is suitable for the repair, maintenance, and refurbishment of KACO Powador TR3 series three-phase photovoltaic inverters.
⚙️ Technical Specifications
Compatibility Information
- Manufacturer: KACO New Energy
- Series: Powador TR3
- Compatible Model: Powador 16.0 TR3 INT
- Board Type: Power Supply Board
- Application: Three-Phase Grid-Tied Photovoltaic Inverter
Associated Inverter Specifications
- Rated AC Output Power: 16,000 W (16 kW)
- Grid Voltage: 3 × 400 VAC
- Grid Frequency: 50 / 60 Hz
- Maximum DC Input Voltage: Up to 600 VDC
- Application: Three-Phase Photovoltaic Systems
Components Installed on the Board
- Electrolytic filter capacitors
- Power inductors and chokes
- Switching transformers
- MOSFET and IGBT power devices
- Voltage regulation circuits
- EMI suppression filters
- Multi-pin industrial connectors
- Auxiliary power supply circuits
🔧 Main Functions
This board performs several critical inverter functions:
- Power supply for inverter control electronics
- Generation of internal auxiliary voltages
- Stabilization of control power circuits
- Electrical noise and EMI filtering
- Support for DC/AC conversion stages
- Protection of sensitive electronic components
- Management of power and control signals
- Distribution of regulated internal voltages
🔌 Purpose and Operation
The Power Supply Board is responsible for providing stable and regulated voltages required by the inverter's electronic subsystems.
It powers critical components such as:
- Main control board
- Monitoring circuits
- Communication interfaces
- Protection systems
- Driver boards
- Display and user interface modules
Without a properly functioning power supply board, the inverter may fail to start or operate correctly.
🧩 Role Within the Inverter System
Inside the KACO Powador 16.0 TR3 INT inverter, this board acts as:
- Auxiliary power generation unit
- Internal voltage regulation module
- Power distribution board
- EMI filtering stage
- Support system for inverter control electronics
It works in conjunction with:
- Main control board
- DC power stage
- AC power stage
- Driver boards
- Monitoring and protection circuits
⚠️ Common Faults and Failure Symptoms
Startup Problems
Symptoms:
❗ Inverter does not power on
❗ No display activity
❗ Startup sequence fails
Power Supply Errors
Possible alarms:
- Power Supply Fault
- Internal Voltage Error
- Auxiliary Supply Error
- DC Bus Error
Unexpected Shutdowns
Symptoms:
❗ Random inverter restarts
❗ Sudden shutdown during operation
❗ Intermittent production interruptions
Typical Electronic Failures
Common causes:
- Aging electrolytic capacitors
- Failed MOSFETs or IGBTs
- Blown internal fuses
- Defective switching power circuits
- Overheated components
- Damaged PCB traces
- Cracked solder joints
- Connector oxidation
🚨 Possible Associated Errors
A faulty power supply board may generate inverter errors such as:
- Power Supply Fault
- Internal Voltage Error
- Auxiliary Supply Error
- DC Bus Error
- Startup Failure
- Internal Hardware Error
- Communication Error
- Control Board Fault
- Low Voltage Warning
- Internal Protection Triggered
🏭 Applications
Ideal for:
✔ Repair of KACO Powador 16.0 TR3 INT inverters
✔ Professional photovoltaic inverter maintenance
✔ Refurbishment of out-of-warranty equipment
✔ Replacement of defective power supply boards
✔ Spare parts inventory for service centers
✔ Industrial photovoltaic system repairs
✅ Advantages
✔ Genuine KACO original component
✔ Direct compatibility with Powador 16.0 TR3 INT
✔ Industrial-grade high-reliability design
✔ Cost-effective repair solution
✔ Helps avoid complete inverter replacement
✔ Suitable for professional maintenance applications
✔ Supports long-term inverter refurbishment projects
📦 Product Condition
- Original KACO Power Supply Board
- Removed from professional photovoltaic equipment
- Suitable for repair and replacement purposes
- Ideal for inverter maintenance and refurbishment
- Compatibility should always be verified before installation
🔄 Compatibility
Compatible with:
- KACO Powador 16.0 TR3 INT
- Selected KACO Powador TR3 series inverters (verify part number and hardware revision before purchase)
🟢 Summary
The KACO Powador 16.0 TR3 INT Power Supply Board is an original inverter power management module designed for 16kW three-phase photovoltaic inverters. Responsible for auxiliary voltage generation, power regulation, EMI filtering, and support of inverter control electronics, it is an essential replacement part for the repair, maintenance, and refurbishment of KACO Powador TR3 solar inverter systems.
