ABB UNS2881B‑P.V1 (3BHE009319R0001)

Voltage Monitoring Module – Precision Measurement & Grid Protection

Product Overview

The ABB UNS2881B‑P.V1 (3BHE009319R0001) is a high‑precision voltage monitoring & measuring unit board (MUB) designed for ABB excitation and medium‑voltage drive platforms, including UNITROL 5000 and ACS 6000 series. It performs high‑speed, multi‑channel AC/DC voltage acquisition, grid synchronization, and PT fault detection, delivering accurate, time‑critical data for generator excitation, power conversion, and protective relaying systems. As a core front‑end component, it ensures SIL2‑level safety monitoring and millisecond‑range closed‑loop control in demanding power and industrial environments.

Key Features

1. High‑Accuracy Voltage & Multi‑Parameter Monitoring

• 16‑channel high‑speed scanning: Completes voltage, current, and temperature sampling in 1 ms.
• 16‑bit ADC + 32‑bit RISC processor: Delivers 0.1% measurement accuracy for three‑phase and single‑phase AC/DC voltage.
• PT fault monitoring (PT‑fail): Real‑time detection of voltage transformer anomalies to prevent false tripping.
• Grid synchronization & PSS: Supports power system stabilizer functions to dampen grid oscillations quickly.

2. Industrial‑Grade Reliability & Rugged Design

• Wide operating temperature: ‑40°C to +85°C, suitable for harsh power and industrial sites.
• 4‑layer PCB with high‑temperature materials: Ensures stability under thermal and electrical stress.
• IP20 protection: Protects against dust and accidental contact.
• Low power consumption: Operates on 24 VDC with typical consumption ~7 W.

3. Seamless ABB System Compatibility

• Native integration: UNITROL 5000 excitation systems, ACS 6000 medium‑voltage drives, and ABB DCS/PLC platforms.
• Dual communication: Fiber optic + RS‑485 for noise‑immune data transmission to main CPUs.
• Hot‑swap capable: Online replacement without system shutdown, minimizing downtime.

4. In Stock & Fast Global Shipping

• 100% original ABB, new & in stock.
• 1–3 working days delivery via DHL/UPS/TNT/FedEx.
• 12‑month warranty + dedicated technical support.

Technical Specifications

表格

Parameter	Specification
Model	UNS2881B‑P.V1 (3BHE009319R0001)
Type	Voltage Monitoring / Measuring Unit Board (MUB)
Manufacturer	ABB (Original)
Condition	New, In Stock
Power Supply	24 VDC (±10%)
Channels	16‑channel (voltage, current, temperature)
Resolution	16‑bit ADC
Accuracy	±0.1%
Scan Time	1 ms
Communication	Fiber optic, RS‑485
Operating Temperature	‑40°C to +85°C
Protection	IP20
Dimensions (mm)	255 × 240 × 35
Weight	~0.36 kg
Certifications	CE, UL, CSA
Warranty	12 Months

Applications

• Power Generation: Generator excitation control (UNITROL 5000), stator voltage monitoring.
• Medium‑Voltage Drives: ACS 6000 series, converter voltage & grid synchronization.
• Grid & Substation: Voltage monitoring, PT fault detection, protective relaying.
• Renewables & Storage: PCS, wind turbine converters, and energy storage systems.

Why Choose This ABB Module

• Original ABB quality: Genuine parts with full manufacturer support.
• High precision & safety: Critical for stable, compliant power system operation.
• Ready to ship: In stock for immediate dispatch, no long lead times.
• Trusted performance: Field‑proven in power plants, substations, and heavy industry。