The ABB UNS2881B-P.V1 (Part No:3BHE009319R0001) is an original Swedish-manufactured high-reliability power grid voltage sensing & measurement unit, core MUB measuring board tailored for ABB UNITROL excitation and PROCONTROL P power grid control systems, widely deployed for real-time grid voltage sampling in power plants, chemical plants, steel mills and medium-voltage distribution stations. All available goods are brand-new genuine original ABB spare parts without refurbished copies, stored in constant-temperature anti-humidity warehouse with ready stock for global delivery.

Core Sensing & Grid Monitoring Features

Functioned as dedicated power grid voltage sensor, it collects multi-channel AC/DC bus voltage, generator terminal voltage and excitation loop voltage signals onsite, converts analog voltage signals into standard digital data and transmits readings to master excitation controller via onboard bus circuit for closed-loop voltage regulation. Adopting ABB proprietary isolated sampling circuit, it achieves measuring accuracy up to ±0.2% FS, effectively tracks grid voltage fluctuation, triggers overvoltage/undervoltage interlock protection and prevents abnormal excitation output caused by inaccurate voltage feedback, securing stable grid power supply. Built-in multi-stage surge & EMC shielding design strongly filters industrial field electromagnetic interference, securing stable voltage detection under severe grid harmonic and load surge conditions to realize outstanding long-term reliability.

Rugged Specs for Harsh Industrial Scenarios

Powered by standard DC24V industrial supply with automatic backup power switching for transient power drop prevention, the module works steadily within ambient range -20℃ ~ +55℃, non-condensing humidity 5%~95%, well adaptable to dusty, vibrating, high-temperature harsh workshop and power station environments. Every unit passes strict factory pre-shipment tests including 72h full-load aging, high-low temperature cycling, surge withstand and anti-interference certification complying with CE & UL industrial standards. Compact chassis plug-in DIN rack layout supports direct cabinet insertion and plug-and-play replacement, cutting field maintenance downtime greatly without extra wiring or program modification.

Communication & System Compatibility

Equipped with RS485 interface, compatible with Modbus RTU & Profibus-DP mainstream industrial fieldbus, the voltage sensor seamlessly links with DCS control system, excitation main unit and local HMI for remote real-time voltage checking, protection threshold configuration and historical fault data inquiry. Perfect matching original UNITROL series excitation cabinet pin definition, it is the direct OEM replacement part for routine equipment overhaul and emergency breakdown maintenance of global power grid automation projects.

Stock & Global Shipping Service

Ample spot inventory supports urgent spot order and bulk procurement worldwide. Goods are packed with anti-shock foam and export cartons, shipped within 1–3 working days via DHL/FedEx/UPS for fast global delivery. Complete original factory test certificate and specification documents are attached for smooth customs clearance. All products enjoy 12-month official warranty; free replacement is available for non-human-caused quality issues, alongside lifelong free remote technical support for clients