ABB UNS2881B-P.V1 (3BHE009319R0001) Voltage Monitoring Measuring Unit Board | Power System Sensor Module, Original ABB In Stock

Product Overview

ABB UNS2881B-P.V1, material number 3BHE009319R0001, is the dedicated MUB (Measuring Unit Board) voltage monitoring & multi-signal sensor acquisition module for ABB UNITROL® 5000 synchronous generator excitation systems. As the core power system sensing component, it integrates high-precision signal conditioning circuits, multi-channel analog/digital sampling channels to real-time collect generator three-phase voltage, stator/rotor current, excitation voltage, winding temperature and grid voltage signals, realizing accurate voltage monitoring, abnormal voltage detection and real-time data uploading to the excitation master controller. We supply 100% brand-new sealed original ABB modules with abundant spot inventory, fast global delivery and standard 12-month manufacturer warranty, widely used for power plant generator excitation cabinet assembly, system retrofit and emergency spare replaceme

Core Technical Specifications

表格

Parameter Item	Standard Specification
Full Part Number	UNS2881B-P.V1 / 3BHE009319R0001
Matching System	ABB UNITROL 5000 Generator Excitation Control System
Core Function	High-precision grid/generator voltage monitoring, multi-power parameter sensing sampling
Sampling Channels	Multi-channel AC voltage, AC current, PT/CT signal input, temperature sensor input
Sampling Precision	Voltage sampling error ≤ ±0.2%, meets power system high-precision monitoring standard
Communication Interface	Proprietary high-speed internal bus for data interaction with excitation main control board
PCB Technology	COB Chip-On-Board reinforced conformal coated circuit board
Operating Power Supply	24VDC industrial control power
Operating Temperature	-20℃ ~ +70℃ wide power station temperature range
Storage Temperature	-40℃ ~ +85℃
Protection Design	Multi-stage surge suppression, reinforced isolation between high-voltage sampling circuit and control circuit
Certifications	CE, UL, IEC power system anti-electromagnetic interference standard
Net Weight	Approx. 0.36kg

Core Advantages as Power System Voltage Monitoring Sensor Module

1. Ultra-High Precision Voltage Sampling for Generator Safe Operation

Optimized signal conditioning circuit realizes high-accuracy real-time monitoring of generator terminal voltage, excitation voltage and grid side voltage. It quickly captures voltage deviation, overvoltage, undervoltage and voltage unbalance faults, sends alarm interlock signals to the excitation controller in microsecond-level response, prevents generator over-excitation/under-excitation faults and protects unit safe stable operation, core sensor guarantee for power system voltage closed-loop regulation.

2. Reinforced Isolation & Anti-Surge Design Adapt to Harsh Power Station Environment

Built-in high-voltage isolation barrier and multi-level lightning surge suppression circuit, effectively isolate PT secondary high voltage impact, grid harmonic interference and electromagnetic radiation from generator rooms. Conformal coated anti-corrosion PCB resists dust, moisture and temperature fluctuation in power plant control cabinets, avoiding signal distortion, sampling failure and module burnout caused by power grid transient faults.

3. Multi-Parameter Integrated Sensing, Simplify Excitation Cabinet Layout

Single module integrates voltage monitoring, current sampling and temperature signal acquisition functions simultaneously, compatible with PT voltage transformers, CT current transformers and PT100 temperature sensors. It replaces multiple separate signal collection boards, reduces wiring complexity inside excitation cabinets, saves cabinet installation space and lowers overall system hardware investment for power plants.

4. Real-Time Fault Self-Diagnosis & Visual Status Indication

Onboard multi-group LED status indicators display sampling channel abnormal, communication loss, power failure and module running status in real time. Built-in self-test function automatically detects PT open circuit, CT short circuit and module hardware faults, quickly locates abnormal voltage monitoring channels without extra testing instruments, greatly shortening power plant equipment maintenance time.

5. Original Industrial-Grade Hardware, Long Service Life for Continuous Power Generation

All electronic components adopt ABB power-grade industrial chips, each module passes strict factory full-load aging, vibration resistance and damp-heat cycle testing before delivery. It supports 24/7 uninterrupted long-term operation of generator units, ultra-low failure rate and excellent MTBF performance, far more stable than generic imitation measuring boards.

Main Power System Application Scenarios

1. Thermal Power Plant Generator Excitation System: Real-time generator terminal voltage, excitation voltage monitoring, voltage abnormal fault protection interlock
2. Hydropower Station Unit Control: Grid voltage sampling, generator reactive power adjustment voltage feedback signal collection
3. Distributed New Energy Power Station: Wind turbine, photovoltaic grid-connected unit voltage monitoring and excitation matching control
4. Industrial Self-Supply Power Plant: Medium/large synchronous generator excitation cabinet signal sampling and voltage closed-loop control
5. Metallurgy & Petrochemical Self-Generating Units: Heavy industry internal generator voltage monitoring and fault early warning

Original In-Stock Supply & Global Fast Shipping Service

All ABB UNS2881B-P.V1 voltage monitoring sensor modules we provide are 100% genuine original factory products, complete with sealed original packaging and official factory full-performance test reports, covered by a formal 12-month warranty against manufacturing defects under rated standard operating conditions. Our warehouse maintains abundant permanent ready stock to rapidly fulfill urgent power plant excitation equipment maintenance orders and bulk procurement for global power EPC projects. We adopt professional anti-static, shockproof and moisture-proof dedicated export packaging to protect precision circuit boards during long-distance sea and air international transportation. We cooperate with mainstream global logistics carriers to deliver fast worldwide shipment covering Europe, North America, Southeast Asia, the Middle East and all major power industrial regions, with one-stop professional customs clearance coordination support. Our full supporting service includes pre-sales UNITROL 5000 excitation system compatibility verification, power voltage sampling scheme consultation, plus after-sales technical guidance including cabinet installation wiring, PT/CT signal debugging and complete excitation system overall commissioning.
Selecting genuine original ABB UNS2881B-P.V1 power system voltage monitoring module delivers high-precision stable voltage sampling and multi-parameter sensing guarantee for generator excitation control systems. Consistent original ABB power-grade quality eliminates hidden voltage measurement failure risks brought by counterfeit spare parts, effectively reducing unplanned generator unit trip frequency and long-term power plant maintenance costs. Supported by our ample in-stock inventory, efficient fast worldwide shipping and complete 12-month warranty protection, it is the trusted original voltage sensor spare component choice for global power generation excitation control projects.