ABB UAD142A01 3BHE012551R0001 UNITROL Excitation Control Board

The ABB 3BHE012551R0001 UAD142A01 is a high-integrity hardware component developed specifically for the UNITROL excitation and control system series. This module operates as a dedicated excitation control board, regulating the critical field current and rotor voltages required for the deterministic stability of synchronous generators and large industrial motors. Identified by the manufacturing part number 3BHE012551R0001 and module designation UAD142A01, the board features precise signal-conditioning topologies, surface-mount status diagnostics, and ruggedized ribbon-cable bus connections. Engineered to handle rapid transient spikes across heavy industrial power grids, its localized circuit layout isolates delicate digital logic processors from high-power field disturbances, maintaining continuous loop synchronization and preventing systemic generation downtime.

Features

• Purpose-built control architecture designed to integrate into UNITROL automatic voltage regulator (AVR) chassis assemblies.
• Multi-point ribbon header connectors implementing low-impedance links for deterministic processing speeds.
• Surface-mount LED indicators providing real-time hardware status verification and fault diagnosis.
• Shielded multi-layer printed circuit board design providing enhanced noise rejection on dense electromagnetic plant floors.

Applications

• Automatic voltage regulation and generator field excitation loops in power generation utilities.
• Synchronous motor control systems deployed in oil, gas, and heavy mining infrastructure.
• Static excitation systems requiring isolated analog-to-digital signal conditioning paths.

Technical Specifications

Installation Guidelines

To prevent loop failure or immediate terminal degradation of the processing components during replacement cycles, execute mounting sequences in strict compliance with plant safety procedures.