ABB UFC911B106 3BHE037864R0106 Excitation system control processor board
Specific Parameters
Brand ABB (Swiss Brand)
Product Series ABB UNITROL® 1000/5000 Series Excitation System Module
Product Type Excitation System Control Processor Board (Main Regulation Board)
Model UFC911B106 3BHE037864R0106
Compatible System ABB UNITROL® 1000/5000 Series Static Excitation System
Processor High-Performance Digital Signal Processor (DSP)
Supply Voltage 18VDC to 48VDC, Maximum Continuous Current 3A
Voltage Input Range 0-120V AC (Analog Signal from PT)
Current Input Range 0-5A AC (Analog Signal from CT)
Voltage Regulation Accuracy Better than ±0.5% (Steady State)
Operating Temperature Range -20℃ to +60℃
Storage Temperature Range -40℃ to +85℃
Relative Humidity 5% to 95%, no condensation
Protection Level IP20
Communication Protocols Supports Modbus RTU/TCP, IEC 61850 Protocols
Communication Interfaces Serial Communication Port, Industrial Ethernet Port
Control Output Thyristor Phase-Shifted Trigger Pulses (Pulse Train)
Regulation Modes Automatic Voltage Regulation, Manual Excitation Current Regulation, Reactive Power Regulation
Physical Dimensions 100mm×50mm×30mm (Length×Width×Height)
Physical Weight 0.2kg
Redundancy Configuration Supports Dual-Channel Automatic Tracking Hot Standby Redundancy
Origin Switzerland
Product Performance
Supported by high-performance DSP, it achieves sub-millisecond control cycle, combined with steady-state regulation accuracy better than ±0.5%, which can quickly respond to disturbances such as load switching and short-circuit faults, stabilizing the generator terminal voltage.
Supports switching of multiple regulation modes, and can flexibly switch between automatic voltage, manual excitation current and reactive power regulation modes according to operation requirements, adapting to complex operation scenarios.
Dual-channel hot standby redundancy design enables undisturbed switching to the standby channel when the main channel fails. Combined with complete software and hardware self-diagnosis functions, it can early warn potential faults and ensure high system availability.
Integrates multiple protection and limiting functions such as excitation overcurrent, underexcitation, overexcitation, and V/Hz limitation, comprehensively protecting the safety of generators and excitation systems and avoiding equipment damage.
Compatible with mainstream industrial communication protocols, it can be seamlessly integrated into power plant DCS and SCADA systems to realize remote monitoring, parameter configuration and data upload, adapting to the needs of smart grids.
Wide temperature tolerance design of -20℃ to +60℃ adapts to high and low temperature industrial environments, and can operate stably in various power plant scenarios with excellent environmental adaptability.
Equipped with dedicated debugging tools, it supports parameter setting, waveform recording analysis and fault diagnosis, greatly simplifying the debugging and maintenance process and improving operation and maintenance efficiency.
It has the function of saving control parameters and alarm history records, key data will not be lost after power failure, and can quickly restart operation after power recovery to ensure control continuity.
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