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3BHE030579R0003 Other names:
Excitation controller 3BHE030579R0003
3BHE030579R0003 Excitation System Processor
Excitation voltage regulator 3BHE030579R0003
3BHE030579R0003 Indirect Excitation System
3BHE030579R0003 is a voltage regulator of the UNITOL 1000 series, suitable for small and medium-sized synchronous generators and industrial machinery. 3BHE030579R0003 combines performance control and power circuits with simple mechanical design
3BHE030579R0003 is a powerful and compact automatic voltage regulator with built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options.
3BHE030579R0003 is a voltage regulator of the UNITOL 1000 series, suitable for small and medium-sized synchronous generators and industrial machines. This voltage regulator adopts the most advanced microprocessor technology and IGBT semiconductor manufacturing, allowing current output up to 20 ADC for continuous operation. 3BHE030579R0003 has high performance under various temperature and vibration conditions, and has been fully certified according to DNV and UL standards. Compared to the old version, 3BHE030579R0003 has more features such as Ethernet, USB, data and event recorders, etc.
3BHE030579R0003 Main Features Operation Mode
Using an adjustable PID controller for automatic voltage control.jpg)
Power factor and reactive power controller using PID control algorithm
Excitation current regulator using PI control
Reactive power distribution of parallel and islanded generators
Automatic synchronization and pre synchronization voltage matching
Monitoring and limiter
Provide standby function and set point tracking function for redundant channel system through reliable CAN bus
Enhance system monitoring functions, such as voltage transformer monitoring
Synchronization check function
Rotating diode monitoring function (RDM)
Various limiter functions (excitation current limiter and many other functions)
Data loggers and trends
Automatic and manually triggered data loggers record measurement values and user selected data
The event recording function records successful information as well as time and date information
Use user-friendly debugging and maintenance tool CMT1000 trend recorder
Communication interfaces and tools
Realize full function MODBUS communication through standard Ethernet and RS485.jpg)
Easy configuration and reading of measurement values through the powerful regulator’s LCD panel
CMT1000, a powerful and user-friendly debugging and maintenance software tool, allows for easy parameterization, monitoring, trend analysis, and optimization
All kinds of things
Power system stabilizer compliant with IEEE PSS 2A/2B
Powerful dual processor technology can maintain control over regulation even in the event of interference on the Ethernet communication side
UNITOL ® 1000 series UNITOL ® The 1000 series is ABB’s brushless excitation system, suitable for applications using synchronous machines ranging from 100kVA to 80MVA.
UNITROL ® The 1000 series has been deployed in over 20000 devices worldwide, suitable for power plants, ship electric propulsion and auxiliary power sources, diesel electric locomotives, port cranes, and mining trucks.
UNITOL ® The excitation system is a critical component of many generator sets, used by power plant owners and operators to achieve reliability, stability, and fast transient response of equipment operation according to grid requirements.
The ABB excitation system, combined with automation and electrical systems, rotating machinery control, instrumentation, and advanced digital services, forms a complete and reliable system that can serve all power generation facilities. Certified by TUV – the world’s first excitation system that complies with German grid specifications VDE-AR-N 4110 and VDE-AR-N 4120.
UNITOL ® one thousand and twenty
UNITROL 1020 is a voltage regulator designed specifically for small and medium-sized synchronous generators and industrial machinery. It combines performance control and power circuits with simple mechanical design, providing high performance under various temperature and vibration conditions. This one
The Automatic Voltage Regulator (AVR) features built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options. It adopts the most advanced microprocessor technology and IGBT semiconductor manufacturing, allowing current output of up to 20 ADC for continuous operation.
UNITOL ® one thousand and ten
UNITOL ® 1010 is an indirect excitation system suitable for small and medium-sized synchronous generators and industrial machines. Its advanced microprocessor technology and IGBT semiconductor allow for current output up to 10 ADC for continuous operation.
With built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options, the UNITOL 1010 can provide high performance under various temperature and vibration conditions.
UNITOL ® one thousand and five
UNITROL 1005 is the smaller component in this series, designed specifically for low-end excitation applications, with a maximum excitation current of up to 5 ADC.
Like all UNITOLO1000 products, UNITOLO 1005 is based on the same target software source code and shares the same simulation model, making it highly suitable for demanding grid code applications.
This kit includes CMT1000, a tool for centralized and rapid debugging.
UNITOL ® The 1000 FLEX system is a pre packaged solution for applications that require single or dual channel controllers. All systems are equipped with UNITOL ® 1020 FULL, as a standard device, fully utilizes the best solution to achieve optimal pricing and flexible project adjustment constraints.
With the rapid transition to standard applications, this solution brings together all the functions required for the excitation system. Pre packaged solutions allow you to design excitation systems in the most flexible and cost oriented way possible.
All products on this website are special products, and market prices have been fluctuating,
Please refer to the customer service quotation for details, as the product is new and the price is not genuine,
Please confirm the model, product, price, and other detailed information with customer service before placing an order. The website has been used,
The new one is for sale, please contact customer service for further communication.
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admin –
I. Basic Model Information
Material Code: 3BHE030579R0003
Product Name: UNITROL 1020 BASIC Digital Excitation Automatic Voltage Regulator (AVR)
Equivalent Model: UNS0119A-Z V1
Brand Series: ABB UNITROL 1000 Compact Static Excitation Control System
Positioning: Excitation main control for small and medium-sized synchronous generators, upgraded version of UNITROL1010, standard basic version (without synchronization/without PSS)
II. Core Application Scenarios
Suitable for 100kVA ~ 5MVA synchronous generators, static excitation systems:
Industrial self-contained power plants, cogeneration units
Small and medium-sized hydropower stations, diesel generator sets
Marine power stations, oilfield self-contained power supplies, synchronous condensers
Wind power synchronous excitation auxiliary control retrofit, upgrading and replacement of old excitation cabinets
III. Core Control Functions (AVR) Excitation Core
Automatic Voltage Regulation (AVR)
Steady-state voltage regulation accuracy ±0.5%, dynamic response ≤100ms; real-time acquisition of PT terminal voltage, closed-loop regulation of excitation current to stabilize bus voltage.
Multi-mode operation switching
AVR constant voltage mode (conventional grid-connected/islanded)
FCR constant excitation current mode
PF constant power factor, VAR constant reactive power mode
Multi-unit reactive power sharing (RS485 bus parallel connection)
Full-range limiters (grid standard compliant)
Overexcitation limit, underexcitation limit, stator current limit, V/F low-frequency limit, rotor current maximum limit, meeting national grid guidelines.
Supporting Expansion Capabilities
Different Models in the Same Series:
3BHE030579R0003: Basic Model (No Automatic Synchronization, No PSS)
3BHE030579R0004: Basic + SYNC (with Automatic Grid Synchronization)
3BHE030579R0006: Full Functional
3BHE030579R0007: Full + PSS Power System Stabilizer
IV. Hardware Interfaces and I/O Configuration
1. Analog Signal Acquisition
Three-phase PT terminal voltage input, CT rotor excitation current acquisition
4-channel 4–20mA analog input (remote setting, power signal)
2. Switching I/O
6-channel digital input: remote magnetization adjustment, switching limit, manual/automatic switching, fault reset
4-channel relay output: AVR Fault, overexcitation, underexcitation, loss of excitation, and operating status alarms
3. Communication Interface
RS485: Modbus RTU (reactive power parallel connection, host computer monitoring)
Panel Ethernet port: CMT1000 debugging software, Modbus TCP, supports remote parameter upload/download, fault waveform reading.
4. Operation Panel
Built-in LCD + buttons, local parameter modification, viewing voltage/excitation current/fault codes, and real-time curves.
V. Electrical Technical Specifications
Parameter Items: Standard Specifications
Power Supply: AC 110/220V Adaptive / DC 24V ±20%
Power Consumption: ≤30W
Maximum Drive Excitation Current: 40A (with matching SCR power cabinet)
Operating Temperature: -25℃ ~ +70℃, IP20 protection within the cabinet
Humidity: 5%~95%, non-condensing
Regulation Accuracy: Steady-state ±0.5%, rapid recovery from transient voltage drops
Protection Logic: Overvoltage, undervoltage, overexcitation, loss of excitation, excitation short circuit, V/F low-frequency protection
Installation Method: Standard control cabinet panel embedded installation
Certifications: CE, UL, IEC 61000 Industrial EMC
VI. Built-in Protection Function List
Loss of Excitation Protection (Underexcitation Trip Alarm)
Rotor Overcurrent / Excitation Short Circuit Protection
Terminal Overvoltage, Undervoltage Protection
V/F Hertz Limiting (Prevents Low-Frequency Core Saturation)
Stator Current Overload Limiting
Module Hardware Watchdog, Power Failure Self-Test
Complete Fault Event Log (Exportable via CMT Software)
VII. Supporting Debugging Tools
Dedicated Host Software: CMT 1000 Commissioning Tool
Offline Configuration and Online Modification of Excitation Parameters
Transient Recording, Disturbance Test (Step, Load Shedding) Waveform Analysis
Limiter Curve Visualization, PSS Parameter Tuning (High-End Models)
Fault Log, Long-Term Storage and Export of Operating Data
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