ABB UFC762AE101 (Order Number: 3BHE006412R0101)
Product Name: Excitation System Main Control Signal Regulation Board / Trigger Control Interface Module
I. Basic Information
Brand: ABB
Module Model: UFC762AE101
Material Order Number: 3BHE006412R0101
Compatible System: UNITROL 5000/6000 Generator Set Excitation Control System
Installation Method: Standard Rack Plug-in Installation
Power Supply: DC 24V, Protection Grade IP20
Communication Configuration: Multiple Fiber Optic Interfaces, RS485 Communication Terminals, Switching Quantity / Analog Quantity Wiring Terminals
Core Functions
Thyristor Trigger Pulse Output
Receive the main control instructions from the excitation regulator, generate multiple isolated trigger pulse signals, drive the rectifier bridge thyristors, precisely regulate the generator excitation output current, and stabilize the terminal voltage and reactive power.
Multi-channel Signal Acquisition and Conditioning
Collect key analog quantity signals such as excitation voltage, excitation current, synchronization voltage, and rotational speed, complete signal filtering, amplification, and photoelectric isolation processing, and upload them to the AVR main control unit.
System Fault Monitoring and Protection Logic
Real-time monitor abnormal pulses, power bridge faults, out-of-step, overcurrent and other conditions, trigger soft limits and disconnection protection actions of the excitation system, and upload fault alarm signals to the upper-level DCS.
Fiber Optic High-Speed Communication Interaction
Realize electrical isolation data transmission between the excitation master control unit and the power side board card through fiber optics, resist strong electromagnetic interference in power plants, and ensure the stable and reliable control signals of the high-power excitation circuit.
Key Technical Parameters
Working Power Supply: DC 24V
Signal Isolation Grade: 1500VDC Photoelectric Isolation
Synchronous Sampling Accuracy: ±0.1% FS
Interface Types: Fiber Optic Communication Port, Analog Quantity Terminal, Switching Quantity Terminal, RS485 Communication Port
Operating Environment: -20℃ to +60℃, with three-proof coating, suitable for high-dust and strong electromagnetic conditions in power plants
Typical Application Scenarios
ABB UNITROL Series Excitation System for synchronous generator sets in thermal power, hydropower, and gas-fired power plants. As the core control board of the excitation power unit side, it is used in conjunction with the UFC760BE145 Signal Conversion Module to complete the entire process of excitation regulation, signal acquisition, pulse triggering, and fault protection control.
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