ABB UNS2881B-P,V1 3BHE009319R0001 Measurement Unit Board Excitation System

The ABB UNS2881B-P measurement board, installed in the UNITROL excitation cabinet and works with the COB main control board.

ABB UNS 2881B-P,V1 3BHE009319R0001 MUB Measurement Unit Board

The ABB UNS 2881B-P,V1 (3BHE009319R0001) is a high-performance measurement unit board (MUB) designed for ABB's UNITROL 6800 excitation system. .

Its core function is to collect and process various analog and digital signals from the excitation system—such as voltage, current, and temperature—and transmit this data to the main COB control board for decision-making, ensuring precise voltage regulation for generators.

Item No :
3BHE009319R0001
Order(MOQ) :
1
Payment :
EXW
Product Origin :
Switzerland
Shipping Port :
Wuhan, Hubei, China
Lead Time :
3-5 days
Weight :
3kg

Products Description

ABB UNS 2881B-P,V1 3BHE009319R0001 MUB Measurement Unit Board

Model Number	UNS 2881B-P,V1 3BHE009319R0001
Place of Origin	Switzerland
Dimension/Weight	3kg
Condition	New and Original
Warranty	1 Year
Shipping term	DHL Fedex UPS
Payment	TT / Western Union
Delivery time	3-5 days
Service	24 Hours Online Service

key Parameters and Features

Item	Specifications / Features
Product Type	MUB (Measurement Unit Board) PCB
System Platform	ABB UNITROL 6800 Excitation System
Core Function	Signal acquisition (analog/digital) for generator excitation control
Input Channels	8 isolated input channels
Communication Protocol	Profibus DP (up to 12 MBit/s)
Protection Features	Built-in surge protection (up to 4000V) and 600W transient protection
Power Supply	24 V DC
Operating Temperature	-20°C to +60°C (or up to +70°C depending on source)

Core Features & Advantages

Precise Signal Acquisition for Excitation Control: The module's standout feature is its role as the "eyes" of the UNITROL 6800 system . It provides the precise measurements needed for stable voltage regulation, which is critical for preventing power grid fluctuations and protecting equipment .
Robust Design for Harsh Environments: The module is designed with key protective features such as 4000V lightning protection and 600W surge protection, ensuring reliable operation in the electromagnetically noisy environments typical of power plants . It also features 8 isolated input channels to prevent control circuit interference .
High-Speed Communication: It utilizes Profibus DP communication to exchange data quickly with the main controller (COB board) at speeds up to 12 Mbit/s, enabling real-time control responses .

Typical Applications

The UNS 2881B-P,V1 is a critical component in high-power industrial systems, primarily used for:

Generator Excitation Systems: Core measurement board in ABB UNITROL 6800 for power generation .
High-Power Rectifier Control: Used in large rectifier networks for industrial applications .
Industrial Automation: As part of the ABB 800xA distributed control system (DCS) for signal acquisition and communication .

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