Product Overview

The 3BHE021889R0101, professionally designated as the UFC721BE101, is a specialized Analog/Digital Converter and Voltage Interface (ADCVI) board developed for ABB’s UNITROL series of excitation systems. This high-precision component serves as a critical bridge between the high-voltage power electronics and the digital control layer. It is engineered to perform high-speed sampling of voltage and current variables, converting these essential field inputs into digital data packets for real-time processing by the excitation controller. By ensuring galvanic isolation and signal accuracy, the UFC721BE101 maintains the stability of synchronous machines and ensures the grid-compliant operation of industrial power generators.

Hardware Architecture and Engineering Parameters

The UFC721BE101 is designed for high-availability environments, featuring a protective coating to prevent circuit degradation in humid or chemically active industrial atmospheres.

• Part Number 3BHE021889R0101

• Model Identification UFC721BE101

• System Series UNITROL 1000 / 6000 Excitation Systems

• Input Interface Analog/Digital Converter Interface (ADCVI)

• Operating Frequency High-speed 30kHz output frequency for rapid control response

• Voltage Support Rated for 220V auxiliary supply systems

• Physical Profile 6 x 18.8 x 1.8 cm

• Component Mass 0.28 kg

• Protection Level Coated PCB (ADCVI-Board Coat) for enhanced durability

• Compliance Standard IEC, UL, and CE industrial certifications

• Manufacturing Site Sweden

Specialized Utility and Industrial Deployments

As a vital link in the UNITROL regulation chain, the UFC721BE101 board is utilized in large-scale energy production and heavy industrial motor management.

• Synchronous Generator Excitation Provides the high-speed voltage feedback loop necessary for maintaining constant terminal voltage in hydroelectric and thermal power plants.

• Power Grid Stability Enables rapid reactive power compensation by supplying accurate data to the excitation system during grid frequency fluctuations.

• Industrial Synchronous Motors Used in heavy-duty mining and metals processing to manage the field excitation of large motors, optimizing power factor and torque.

• Dynamic Response Enhancement Facilitates immediate system adjustments to load changes in isolated or island-mode power grids.

• Excitation System Maintenance Serves as a direct replacement component for UNITROL control racks, ensuring continued operation without necessitating a full system overhaul.