UNITOLO1020 3BHE03579R0003 ABB Controller

ABB UNITROL1020 3BHE030579R0003 Product Profile & Technical Specifications
One-sentence Overview
ABB UNITROL1020 3BHE030579R0003 is a compact automatic voltage regulator (AVR) from the UNITROL 1000 series, designed for small and medium synchronous generators up to 80 MVA, featuring 20 ADC continuous output, ±0.5% voltage regulation accuracy, robust microprocessor and IGBT technology, dual channel support, and a compact form factor (233 × 102 × 41 mm, 1.2 kg), ensuring reliable excitation control and voltage regulation in industrial power systems.

1. Basic Product Information
Brand/Manufacturer: ABB Ltd., a global leader in power grid, industrial automation, and electrical equipment solutions
Model Number: UNITROL1020 (also referred to as UNITROL 1020-0003 BASIC)
Part Number: 3BHE030579R0003 (Ordering Code: UNS0119A-Z, V1)
Product Series: ABB UNITROL 1000 Series Automatic Voltage Regulators
Product Type: Industrial-grade compact automatic voltage regulator (AVR) for indirect excitation systems
Core Application: Voltage regulation and excitation control for small and medium-sized synchronous generators and industrial machines up to 80 MVA; suitable for both power generation and motor excitation applications; can operate as reactive power regulator, power factor regulator, or field current regulator
Compliance & Certification: Complies with IEC 60034, IEC 61000, and IEEE standards for excitation systems; certified with CE, UL, and RoHS for global industrial application
Compatibility: Compatible with standard synchronous machines and industrial control systems; supports Modbus RTU (RS-485) communication protocol for seamless integration into SCADA and DCS systems
Product Status: Brand-new original industrial component, factory-sealed with complete technical documentation and installation instructions
Warranty: 1-year standard factory warranty (extended warranty options available through authorized distributors)
2. Physical Specifications
Weight: Net weight approximately 1.2 kg (2.65 lbs); gross weight including packaging approximately 1.5 kg (3.31 lbs)
Dimensions (L × W × H): Standard dimensions 233 mm × 102 mm × 41 mm (9.17 × 4.02 × 1.61 inches); optimized for space-saving installation in control cabinets and generator terminals
Mounting Method: Panel mounting via dedicated brackets; designed for secure installation in standard electrical enclosures and generator control panels
Housing Material: Robust industrial-grade plastic casing with UL94 V-0 flame-retardant rating; internal components protected by a metal frame for enhanced durability and mechanical strength
Protection Grade: IP20 (designed for indoor control cabinet installation, providing dust protection and preventing accidental contact with internal live parts)
Structural Features: Clear front panel with LED status indicators for easy monitoring; removable front cover for easy access to terminals and configuration settings; integrated lockout/tagout capability for safety during maintenance; clearly marked terminals for simplified wiring and setup

3. Electrical & Technical Parameters
Excitation Output: Continuous output current up to 20 ADC at 55°C ambient temperature; peak output current up to 40 ADC for short-duration operation
Voltage Regulation Accuracy: ±0.5% of rated voltage, ensuring precise and stable voltage control
Auxiliary Power Supply: AC input voltage 3 × 400 V (380-480 V range); auxiliary control power 12.5-48 VDC or 110-230 VAC
Control Channels: Built-in dual channel support for enhanced reliability and redundancy in critical applications
Input/Output Configuration: 12 digital inputs (up to 8 configurable as outputs); 3 analog inputs; 2 analog outputs; flexible configuration for various control and monitoring requirements
Communication Interface: Modbus RTU (RS-485) communication port for remote monitoring and control; supports integration with SCADA systems and industrial networks
Voltage Regulation Range: Adjustable to match generator specifications; typically covers ±10% of rated voltage for flexible application
Response Time: < 10 ms for fast voltage correction during load changes, ensuring stable power supply
Power Electronics: Advanced IGBT semiconductor technology for efficient and reliable power conversion; microprocessor-based control for precise regulation and protection functions