ABB UNITROL1020 UNS0119A-Z V1 digital excitation regulator AVR, for synchronous generator voltage control.

Product Overview

ABB UNITROL1020 UNS0119A-Z,V1 3BHE030579R0001 belongs to ABB UNITROL 1000 series digital automatic voltage regulator (AVR). It is an integrated excitation control unit specially designed for synchronous generators. It adopts dual-processor architecture, realizes high-precision generator terminal voltage adjustment, reactive power control and power system stabilization. It supports automatic/manual control switching, built-in multiple limit protection functions, and can communicate with DCS, PLC and HMI through Modbus TCP. It is widely used as core spare part for excitation cabinet maintenance of hydro, thermal, gas and diesel generator sets.

Key Features

• High precision voltage regulation, voltage control accuracy up to ±0.2%
• Dual independent processor design for control and communication
• Max excitation output current 20A, support AC/DC power supply input
• Multiple control modes: AVR, FCR, PF, VAR control
• Built-in PSS power system stabilizer, suppress power oscillation
• Integrated rotating diode monitoring, event logger and fault recording
• Rich communication: Modbus TCP, USB, RS485, SNTP time synchronization
• CMT1000 commissioning software for parameter setting and diagnosis
• Single / dual channel optional, meet high-reliability redundant requirements

• Rugged hardware, vibration resistance, adapt to power plant harsh environment

Technical Specifications

• Brand: ABB
• Model: UNITROL1020
• Code: UNS0119A-Z, V1
• Part Number: 3BHE030579R0001
• Product Type: Digital Excitation Controller / AVR
• Series: UNITROL 1000
• Excitation Current: 20A
• Communication Protocol: Modbus TCP, USB, RS485
• Auxiliary Tool: CMT1000
• Function: Voltage regulation, reactive power control, excitation protection

• Certification: CE, DNV, cUL

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Application

It is applied in hydropower station, thermal power plant, gas generator, diesel generator, marine power system and self-provided power plant, used for excitation regulation and stable operation control of synchronous generators.