ABB UNITROL 1020-0003 is a static excitation system of the UNITROL 1000 series produced by ABB Company. It belongs to the medium and large-sized generator excitation control equipment. This system adopts the full-controlled thyristor rectifier bridge technology and is combined with the digital automatic voltage regulator (AVR), providing precise, fast and reliable excitation current control for large synchronous generators.
UNITROL 1020 is a medium-high power level model within the UNITROL 1000 series. It is specifically designed for synchronous generators ranging from 50MW to 500MW and is widely used in power generation industries such as thermal power, hydropower, and gas turbine power generation.
Model 3BHE030579R0003 represents a specific configuration version within this series (-0003), typically corresponding to a particular voltage level, current capacity and pulse count configuration (6 pulses/12 pulses).
Technical Specifications / Technical Parameters
Parameter Item Details
Product Model UNITROL 1020-0003
ABB Part Number 3BHE030579R0003
Product Series UNITROL 1000 Family
Excitation System Type Static Excitation System
Rectification Method Full-controlled Thyristor Bridge
Pulse Configuration 6 pulses / 12 pulses (depending on specific configuration)
Applicable Generator Capacity 50 MW to 500 MW
Excitation Voltage (Typical) 0 to 500V DC (adjustable)
Excitation Current (Typical) 0 to 8000A DC (depending on configuration)
Peak Voltage (Ceiling Voltage) Up to 2.0 times the rated excitation voltage (boost excitation)
Response Time (Voltage Step) ≤ 50ms (typical value)
AVR Regulation Precision ±0.5% to ±1.0%
Control Method Digital Automatic Voltage Regulator (Digital AVR)
Communication Interface Modbus RTU/TCP, Profibus, IEC 61850 (optional)
Input Power Supply AC 380V/480V (station power supply) or PT power supply
Cooling Method Natural Cooling / Forced Air Cooling (depending on cabinet configuration)
Protection Grade IP20 / IP54 (cabinet grade)
Operating Temperature -10°C to +50°C
Humidity Range 5% to 95% RH (no condensation)
Standard Certifications IEC 60034, IEC 61800, IEEE 421, IEEE 446
Manufacturer ABB (Switzerland/China)
Summary
ABB UNITROL 1020-0003 (3BHE030579R0003) is a medium-high power level static excitation system, specifically designed for large synchronous generators with a capacity of 50 to 500 MW. It features rapid response, high precision regulation, comprehensive protection, and multiple communication capabilities. It is a mainstream excitation solution in the fields of thermal power, hydropower, and gas turbines.
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