Xiamen Xingruijia Import and Export Co., Ltd. has been specializing in the sales of industrial control equipment spare parts for 20 years. For more ABB models, please refer to the product list . If you need other brands or models, please contact us. We have a variety of brands and models in stock, and we can purchase difficult to order models for you. We look forward to your inquiry!!!

First hand source//affordable price//Spot inventory!

•Shipping Port: Xiamen

•E-mail: sales7@saulplc.com

•Tel/WhatsApp/Wechat: + 86-15359273796

•Ship to you via Fedex/DHL/TNT/UPS/EMS

•Package: Original packing with cartons

==============================================================================================================================================

ABB 3BHE030579R0003 UNITROL 1020

Manufacturer: ABB
Model: UNITROL 1020-0003 BASIC
Order Code: 3BHE030579R0003
Type: Automatic Voltage Regulator (AVR) / Excitation Control System
Series: ABB UNITROL® 1000 Excitation System

Product Description

ABB 3BHE030579R0003 UNITROL 1020 is a compact, high-performance automatic voltage regulator (AVR) designed for excitation control of synchronous generators and motors. It provides precise regulation of generator terminal voltage, reactive power, and power factor by controlling the excitation current of the generator field winding.

The UNITROL 1020 is part of ABB’s UNITROL 1000 family and is designed for reliable operation in industrial power generation applications, including hydro, diesel, gas, and marine generator systems.

Main Features

• High-performance digital AVR control
• Compact excitation controller design
• Fast voltage response and high regulation accuracy
• Integrated measurement, monitoring, and protection functions
• Ethernet and RS485 communication interfaces
• Supports ABB CMT1000 commissioning and maintenance software
• Local display panel for status monitoring and parameter adjustment
• Robust EMC design suitable for demanding industrial environments

Technical Specifications

Application Range

ABB UNITROL 1020 is widely used in:

• Power generation plants
• Hydroelectric generators
• Diesel generator sets
• Gas turbine generators
• Industrial captive power systems
• Marine generator excitation systems
• Synchronous motors requiring excitation control

It is suitable for applications requiring stable voltage regulation, improved grid stability, and reliable generator operation.

Advantages

• High reliability: Designed for continuous operation in industrial environments.
• Fast dynamic response: Helps maintain generator voltage stability during load changes.
• Flexible communication: Enables integration with plant control systems through standard interfaces.
• Easy maintenance: Configuration and diagnostics can be performed using ABB CMT1000 tools.
• Compact replacement solution: Compatible as an upgrade path for previous UNITROL 1000-15 excitation controllers.

Conclusion

The ABB 3BHE030579R0003 UNITROL 1020-0003 BASIC is a reliable digital excitation controller for synchronous generator voltage regulation. With advanced AVR technology, flexible communication capabilities, and robust industrial design, it is an ideal solution for modern power generation and excitation system upgrades.