ABB 2RDA014225A0005 1VC117000089A01 Excitation Control Module

Overview

The ABB 2RDA014225A0005 with marking code 1VC117000089A01 is an excitation control module from the ABB RDA series, designed for synchronous generator excitation regulation systems. It executes excitation current regulation, voltage stabilization, reactive power control and protection logic for medium and large synchronous generators. It is widely used in hydroelectric, thermal power and cogeneration generator excitation cabinets as a spare replacement unit.

Features

The ABB 2RDA014225A0005 is a core control board for synchronous machine excitation regulation.2RDA014225A0005 supports automatic voltage regulation, manual excitation control and reactive power adjustment. Built-in supervision functions for overexcitation, underexcitation and excitation loss monitoring. Hardware interface for excitation thyristor bridge drive, field current and voltage feedback acquisition. Compatible with ABB UNITROL excitation platform peripheral signal circuits. Plug-in modular structure, designed for cabinet backplane installation. Compliant with power industry EMC standards for generator control environments.

Specs

Device Type: Excitation Control Module Model: ABB 2RDA014225A0005 Secondary code: 1VC117000089A01 Brand: ABB Series: RDA excitation control series Application: Synchronous generator excitation cabinet Mounting: Backplane plug-in Status: Generator excitation spare module

Principle

The ABB 2RDA014225A0005 samples generator terminal voltage and field current signals, compares the measured value with the set reference, calculates the control output and drives the thyristor rectifier bridge to adjust excitation current. It maintains generator voltage and reactive power within the target range and triggers protection actions when abnormal excitation conditions occur.

Applications

The ABB 2RDA014225A0005 is installed in ABB UNITROL excitation systems for hydro, thermal and waste heat power plant synchronous generators. The ABB 2RDA014225A0005 is stocked as spare replacement for excitation control cabinets.