ABB UNS0887A-P (3BHE008128R0001) UNITOL series generator excitation system.

1、 Basic information • Manufacturer: ABB • Model: UNS0887A-P • Order No.: 3BHE008128R0001 • Product type: Communication adapter card/control board • System: Mainly used in ABB UNITOL series excitation control system • Origin: Switzerland 2. Physical specifications • Dimensions (length x width x height): 205 mm x 140 mm x 38 mm • Net weight: 0.15 kg • Board structure: Green PCB printed circuit board, integrated processor, communication interface, signal processing circuit 3. Core functions 1 As the communication interface module of the excitation system, the system communication hub is responsible for the main control unit and external devices (such as DCS system HMI、 Data exchange on the upper computer. Realize high-speed and stable transmission of control instructions, status feedback, fault alarms, parameter settings, and other signals. two Signal processing and conversion: Collecting, isolating, conditioning, and converting analog, digital, and pulse signals within the excitation system. Provide accurate input data for system control algorithms to ensure the stability of voltage regulation. three Control and monitoring ◦ Participate in the closed-loop control logic of the excitation system, supporting multiple control modes such as constant voltage, constant reactive power, and constant power factor. Real time monitoring of system operation status, providing protection and diagnostic functions for overcurrent, overvoltage, demagnetization, communication faults, etc. 4、 Main features • High reliability: Industrial grade design, suitable for harsh environments such as high temperature, high humidity, and strong electromagnetic interference in power plants. High speed communication: Supports multiple industrial fieldbus protocols to ensure real-time data. Plug and play: designed specifically for the ABB UNITOL series, with strong compatibility and easy installation. • Redundancy support: Some configurations support communication link redundancy to ensure uninterrupted system operation. • Fault diagnosis: Comes with status indicator lights and diagnostic information, making it easy to quickly locate and troubleshoot faults. 5、 Typical application scenarios • Thermal power plants: excitation control of steam turbine generators • Hydroelectric power plants: excitation control of water turbine generators • Gas turbine power plants: gas turbine generator systems • Industrial self owned power plants: large industrial enterprise self owned generator sets 6. Common supporting systems • ABB UNITOL 5000 excitation system • ABB UNITOL 6000 excitation system 7. Quality and warranty • Brand new original packaging • Warranty period: standard 12-month warranty • Certification: in compliance with international industrial electrical standards (CE/UL, etc.)