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ABB UNS2881b‑P,V1 3BHE009319R0001 MUB Measurement Unit Board

Technical SpecificationsModel: UNS2881b‑P,V1Part No: 3BHE009319R0001Power Supply: 24V DC (15%), typical power consumption 5WApplicable System: ABB UNITROL 5000 static excitation sy
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Products Description
Technical Specifications

  • Model: UNS2881b‑P,V1

  • Part No: 3BHE009319R0001

  • Power Supply: 24V DC (±15%), typical power consumption 5W

  • Applicable System: ABB UNITROL 5000 static excitation system (MUB measurement unit board)

  • Main Function: High‑precision acquisition of generator voltage, current and temperature signals, analog‑digital conversion, pre‑processing measuring data, internal bus data transmission to COB main control board

  • Processor: 32‑bit RISC industrial microprocessor

  • Signal Precision: Measurement accuracy ±0.1% full‑scale, 12‑bit sampling resolution

  • Communication: System internal high‑speed bus, data interaction with COB control board

  • Isolation: 1.5kV AC galvanic isolation between field measuring circuit and control circuit

  • Operating Temperature: ‑10℃ ~ +60℃; Storage temperature:‑40℃ ~ +85℃

  • Humidity: 5%‑95% RH, non‑condensing

  • Protection Class: IP20 (cabinet internal installation)

  • Mounting: Rack plug‑in installation for UNITROL5000 excitation cabinet

  • Dimension: 255mm × 240mm ×31mm; Weight: approx 0.59kg

UNS2881b‑P,V1 (3BHE009319R0001) is MUB measurement unit board of ABB UNITROL5000 static excitation system. It is responsible for collecting key measuring signals from generator side, converts analog field signals into valid digital data and transmits to COB main control board for excitation regulation calculation.
This board features high‑precision sampling circuit, ensures accurate acquisition of generator terminal voltage, excitation current and other critical parameters. Industrial‑grade EMC hardware design adapts to strong electromagnetic interference environment in power plant excitation cabinet. On‑board LED indicators display power, running and fault status for convenient on‑site inspection and troubleshooting. It must cooperate with COB main control board to complete closed‑loop excitation regulation.
Widely applied in thermal power, hydropower and industrial captive power plant synchronous generator excitation cabinets. When replacing spare parts, verify full part number and hardware revision to ensure system compatibility. Complete power‑off and discharge operations before installation. Suitable for on‑site fault replacement and long‑term spare‑part stocking of existing UNITROL5000 excitation equipment.


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