ABB 3BHB005922R0001 UNS0880A-P V1 Excitation Interface Board

Product Description

Model: 3BHB005922R0001 Brand: ABB Name: UNS0880A-P V1 CIN Converter Interface Board (Excitation Interface Board) This is a dedicated CIN (Converter Interface) board for ABB UNITROL 5000 static excitation system. It acts as the critical isolation & conversion board between the excitation control side and power rectifier side. It handles pulse signal translation, dynamic current balancing for parallel rectifier bridges, galvanic isolation between low-voltage control and high-voltage power circuits, voltage & current feedback acquisition and protection interlock execution. It is coated with conformal coating for anti-humidity and anti-dust performance, widely used as OEM spare part for generator excitation systems in power plants.

Specifications

• Model: 3BHB005922R0001 (Alias: UNS0880A-P V1)
• Brand: ABB
• Product Name: CIN Converter Interface Board / Excitation Interface Board
• Compatible System: UNITROL 5000 Static Excitation System
• Function: Pulse conversion, rectifier dynamic load sharing, galvanic isolation, feedback sampling, interlock protection
• Isolation: Galvanic isolation between control and power circuits
• Mounting: Plug-in rack-mounted PCB assembly
• Protection Class: IP20 (for cabinet installation)
• Operating Temperature: -25℃ ~ +70℃
• Control Power: 24V DC
• Origin: Switzerland
• Note: Critical spare part for power plant excitation maintenance and replacement

Application

It is deployed on ABB UNITROL 5000 excitation systems for synchronous generators in thermal and hydropower plants. It bridges the COB main control board and thyristor rectifier power units, sends firing pulses, balances load among multiple rectifier bridges, collects power-side feedback signals and executes fault interlock protection. It is used for excitation system overhaul, breakdown replacement and spare inventory of generator sets. It is the key spare part for pulse control and communication of excitation power loop.

Series Part Numbers

3BHB005922R0001 (UNS0880A-P V1) 3BHE014967R0001 (UNS2880B-P V1 COB Board) 3BHE009319R0001 (UNS2881B-P V1 MUB Board) 3BHB006449R0002 (Power Supply Module)