ABB UFC760BE145 3BHE004573R0145 Excitation Conversion Module

ABB UFC760BE145 (Order Number: 3BHE004573R0145)
Product Name: Excitation System Signal Conversion / High Voltage Isolation Interface Module
I. Basic Parameters
Brand: ABB
Module Model: UFC760BE145
Material Order Number: 3BHE004573R0145
Applicable System: UNITROL 5000/6000 Generator Set Excitation Control System
Installation Method: Standard rack plug-in installation, protection grade IP20
Power Supply: DC24V

Core Functions
High and Low Voltage Electrical Isolation
Realize electrical isolation between the high-voltage side of the excitation power and the low-voltage control side of the main controller. The isolation voltage is up to 1500VDC, preventing high-voltage surges and interference from damaging the excitation main control board card, ensuring the safe operation of the system.
Multiple Analog Signal Acquisition and Conversion
8-channel isolated analog input, supporting 4–20mA, 0–10V standard industrial signals. Collect key operating parameters such as generator excitation voltage, excitation current, and terminal voltage and transmit them to the excitation regulator.
Isolated Control Command Transmission
Isolate and transmit the trigger and regulation control commands issued by the AVR automatic voltage regulator to the thyristor rectifier power circuit, driving the excitation power unit to precisely adjust the excitation output.
Fault Status Feedback Upload
Real-time collect abnormal signals such as power bridge, excitation circuit, overcurrent, overheating, etc., and upload them to the excitation control system and the upper DCS to achieve fault alarm and protection actions.

Main Features
Independent Channel Photoelectric Isolation, Strong Anti-EMI Capability, Suitable for complex electromagnetic conditions in power plants;
High Precision Signal Sampling, Ensuring Stable Voltage and Reactive Power Regulation of Generator;
Support System Hot Swap, Can be offline for spare parts replacement during equipment shutdown, Shortening equipment maintenance time;
Built-in Fault Status Indicator Light, Facilitating rapid troubleshooting of channel faults on-site.

Typical Application Scenarios
ABB UNITROL Series Excitation System for Thermal Power, Hydropower, and Gas Turbine Generator Sets. It can also be used as a high-voltage signal isolation acquisition device in the PCS6000 medium-high voltage high-power variable frequency speed regulation system.