Description
The ABB UAC318AE is a high-performance excitation control board primarily used as a core component in generator excitation systems. It is designed to establish and maintain the generator’s magnetic field by precisely regulating DC excitation current, ensuring stable output voltage and power factor across various grid conditions.
Product Parameters
- Part Number: HIEE300744R1
- Model Code: UAC318AE
- Operating Voltage: 24V DC (±15%)
- Processing: 32-bit high-speed microprocessor
- Response Time: < 1 ms (typical)
- Digital I/O: 16-channel opto-isolated inputs / 16-channel outputs
Product Specifications
- Function: Automatic Voltage Regulation (AVR) and pulse generation
- Communication: RS-485 and Ethernet (Modbus TCP/IP compatible)
- Isolation: Integrated photoelectric isolation for signal integrity
- Mounting: Supports standard DIN rail or panel mounting
- Dimensions: 208 x 57 x 73 mm
- Operating Temp: -25°C to +70°C
Application Areas
- Synchronous generator excitation systems
- Power plant voltage and frequency regulation
- Grid stability and oscillation suppression systems
- Hydroelectric and thermal power generation control
- Industrial co-generation facility management
Product Q&A
Q: What is the main purpose of the UAC318AE module? A: It acts as the “nerve center” for excitation systems, adjusting the magnitude and phase of current to keep generator voltage within set ranges.
Q: Does the board include built-in protection? A: Yes, it features integrated protection for overcurrent, overvoltage, frequency deviation, and internal fault diagnostics.
Q: Is this board compatible with the ABB UNITROL series? A: Yes, it is a standard control unit often found in UNITROL and other specialized ABB power electronics platforms.

