ABB 3BHB026281R0001 Excitation Control Board

The ABB 3BHB026281R0001 is a dedicated excitation control circuit board used in ABB generator excitation systems. It performs signal acquisition, pulse generation and closed-loop regulation functions to maintain stable output voltage and reactive power of synchronous generators during unit operation.

This board adopts high-reliability industrial electronic components and complete circuit monitoring design. It cooperates with power unit and interface modules to realize automatic excitation adjustment, fault detection and protection trigger. Widely used for power plant excitation cabinet maintenance, system overhaul and spare parts stocking.

Main Specifications

• Brand: ABB
• Model: 3BHB026281R0001 Excitation Control Board
• Applicable Equipment: Synchronous generator excitation system
• Power Supply: On-board auxiliary DC power supply
• Signal Type: Analog measurement signals, trigger pulse output
• Installation: Fixed installation inside excitation control cabinet
• Protection Class: IP20 indoor cabinet use
• Heat Dissipation: Natural convection cooling
• Operating Temperature: -10°C ~ +60°C
• Application Field: Thermal power, hydropower generator sets

Core Functions

• Collect generator voltage, current and rotor excitation feedback signals
• Generate trigger pulses to control thyristor rectifier power unit
• Execute automatic voltage regulation and reactive power closed-loop control
• Detect internal circuit abnormality and trigger corresponding protection actions
• Support excitation system startup, normal operation and fault shutdown logic
• Transmit operating status and fault information to upper monitoring system
• Withstand voltage fluctuation and electromagnetic interference in power plant environment
• Cooperate with other boards to complete excitation system coordination control
• Realize under-excitation, over-excitation and loss-of-excitation auxiliary protection
• Long-term stable operation for continuous generator unit occasions

Application Scenarios

• Thermal power plant turbo generator excitation control cabinets
• Hydropower station hydro generator excitation system projects
• Waste heat power generation unit synchronous generator control occasions
• Industrial self-provided power plant generator excitation transformation
• Biomass power generation unit excitation cabinet maintenance projects
• Cogeneration power plant generator voltage regulation control systems
• Island operation and grid-connected generator excitation control occasions
• ABB excitation system inspection, overhaul and spare parts replacement
• Small and medium-sized synchronous generator set control cabinet upgrading
• All power generation occasions equipped with ABB static excitation devices