Product Overview

ABB UAD149A00‑2‑511, order number 3BHE014135R2511, belongs to UAD149 series high‑performance excitation control unit for ABB AC800PEC and AC800M control systems. This ABB UAD149A00‑2‑511 module performs AVR automatic voltage regulation for synchronous generators, excitation current closed‑loop adjustment, high‑speed signal acquisition and logic calculation to stabilize generator voltage and reactive power output. This unit is obsolete by original manufacturer. Available stock includes new surplus units and refurbished pulled‑out spare parts for maintenance and replacement of legacy excitation systems in power plants.

Technical Specifications

Key Features

1. Original ABB UAD149 excitation control unit, specially designed for AC800PEC excitation system for generator AVR closed‑loop voltage regulation.
2. High‑speed signal processing with galvanic channel isolation, strong anti‑EMI performance for industrial power‑plant environment.
3. Built‑in comprehensive self‑diagnosis function for fast excitation‑loop fault detection and on‑site troubleshooting.
4. DIN‑rail installation, hot‑swap supported for quick module replacement during maintenance.
5. Essential spare part for legacy ABB generator excitation hardware platform repair.

Application

Thermal power plant, hydropower plant, synchronous generator excitation control system, ABB AC800PEC power automation retrofit & maintenance.