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ABB UNITOL 5000 Synchronous Generator Digital Static Excitation System
| Brand: ABB |
| Item NO: UNITROL 5000 |
| Effect: Large synchronous generator digital static excitation system |
| Condition: In stock, brand new/Used |
| Warranty: 365 days |
| Payment:T/T 50% deposit, 50% balance |
| www.szcxdcs.com |
+86 15359298293
ABB UNITOL 5000 Synchronous Generator Digital Static Excitation System
UNITROL 5000 is a large-scale synchronous generator digital static excitation system launched by ABB, which includes AVR automatic voltage regulator, thyristor power rectifier unit, human-machine interface, and protection monitoring module. UNITROL 5000 is used for large and medium-sized synchronous generators. By adjusting the rotor excitation current, it controls the stability of the generator terminal voltage and regulates the reactive power output of the unit; The UNITROL 5000 is equipped with a power system stabilizer PSS, which suppresses low-frequency oscillations in the power grid and improves grid stability. The system integrates a complete set of restriction, protection, and event recording functions, which can achieve automatic/manual excitation control switching. It is a core control equipment for thermal power, hydropower, and nuclear power generation units, ensuring the safe grid connection and long-term stable operation of generators.

Product features
- Dual channel redundant regulator design, with the main channel automatically switching to the backup channel without disturbance, ensuring uninterrupted excitation operation.
- High precision digital AVR, supporting automatic voltage regulation and manual excitation current regulation, capable of smooth and disturbance free bidirectional switching.
- Built in multi band PSS power system stabilizer, effectively damping low-frequency oscillations in the power grid, meeting domestic and international grid connection standards
- Complete protection and limitation functions: V/Hz limitation, rotor overcurrent, demagnetization protection, power factor/reactive power limitation, rectifier fault monitoring.
- Modular architecture, control board and power unit are independently designed, and modules can be replaced separately during maintenance to shorten downtime for maintenance.
- Rich communication interfaces, supporting interaction with DCS and SCADA backend, uploading voltage, excitation current, alarm, and event sequence recording SOE.
- Equipped with excitation and demagnetization logic, supporting unit excitation and voltage building, rapid demagnetization in case of faults, and protecting the generator rotor.
- Long life design, with a designed lifespan of 30 years, suitable for continuous and uninterrupted long-term operation of power plants.
ABB UNITOL 5000 Synchronous Generator Digital Static Excitation System
Core service capability
- Replacement of discontinued parts: Provide original factory compatible or verified replacement solutions for discontinued or obsolete models to reduce system upgrade and renovation costs
- Quick response supply: sufficient inventory of commonly used spare parts, priority response to urgent inquiries, and shortened downtime
- Full chain quality assurance: strict procurement channel management and quality inspection, traceability of key components
- One stop system matching: covering the integrated procurement needs of system level spare parts from control modules to drive devices
Main product range
| Category | Product Details |
|---|---|
| Control Systems (DCS/PLC/CNC) | Panel Controllers, HMI Interfaces, Industrial PCs, CPU Processor Modules, Communication Modules, Analog/Digital I/O Modules |
| Drives & Motion Control | Variable Frequency Drives, Servo Drives, Servo Motors, Power Supply Modules |
| Robot Spare Parts | Robot Control Boards, Axis Computers, Servo Units, I/O Modules and other critical spare parts |
| Condition Monitoring & Safety Systems | Vibration Monitoring Systems, Safety Instrumented Systems (SIS), Redundant Control Systems |


ABB UNITOL 5000 Synchronous Generator Digital Static Excitation System
Main brand
| No. | Brand | Country/Region | Main Product Lines | Typical Series/Models |
|---|---|---|---|---|
| 1 | ABB | Switzerland | PLC/DCS Controllers, I/O Modules, Robot Spare Parts, Drive Systems | AC800M, AC800F, AC31, 800xA, Bailey INFI 90, DSQC, Advant OCS, H&B Freelance |
| 2 | Bently Nevada | USA | Condition Monitoring Systems, Vibration Sensors, Eddy Current Probes | 3500/3300 Monitoring System, Eddy Current Probes, Proximitors |
| 3 | TRICONEX | USA | Safety Instrumented Systems (SIS), TMR Redundant Controllers | Tricon System Modules, Communication Modules, I/O Modules |
| 4 | Woodward | USA | Steam/Gas Turbine Control, Speed Governing Systems, Actuators | 505 Governor, ProTech, MicroNet, NetCon |
| 5 | FOXBORO | USA | DCS Systems, I/A Series Control Modules | I/A Series, FBM Modules, Controllers |
| 6 | WESTINGHOUSE | USA | DCS Systems, Ovation Controllers & Modules | Ovation System, WDPF Series |
| 7 | Motorola | USA | Industrial Communication Modules, Embedded Control Modules | MVME Series, VME Bus Modules |
| 8 | GE / GE Fanuc | USA | PLC, Excitation System Modules, CPU/Communication/Analog Modules | IS200/DS200, IC693/IC695/IC697/IC698/IC200/IC660/IC670 |
| 9 | YOKOGAWA | Japan | DCS Systems, CPU Modules, I/O Cards | CENTUM CS3000, CS1000, VP Series |
| 10 | HIMA | Germany | Safety Control Systems, SIL Safety Modules | H41q/H51q, HIMax, HIMatrix |
| 11 | EMERSON | USA | DCS Systems, Redundant Controllers, Safety Systems | Ovation, DeltaV Dual-Channel Redundant Safety Systems |
| 12 | Honeywell | USA | DCS Systems, Process Control Modules | Experion PKS/LS/HS, Plant Scape, TDC2000/3000, TPS, Alcont |
| 13 | ICS TRIPLEX | UK | Trusted Safety Control Systems, TMR Modules | Trusted System, T8000 Series |
| 14 | Kollmorgen | USA | Servo Drives, Servo Motors, Motion Control | S700, S300, AKD Series |
| 15 | PROSOFT | USA | Industrial Communication Modules, Protocol Gateways | MVI69, MVI56, MVI94, MVI71, MVI46, PS69, 3150 |
| 16 | Alstom | France | Power Control, Protection Relays, Control Systems | GEC ALSTHOM, Protection and Control Modules |
| 17 | EATON | USA | Electrical Control, PLC, Power Supplies, Circuit Breakers | XC/XN Series PLC, Moeller Series, Power Supply Modules |
| 18 | Allen-Bradley (Rockwell) | USA | PLC Controllers, I/O Modules, Communication Modules | ControlLogix 1756, CompactLogix 1769, SLC 500 1747/1746, PLC-5 1771/1785 |
| 19 | Schneider | France | PLC, Modicon Series, CPU/Communication Modules | Quantum 140, Modicon M340, Modicon Premium |
————————Shenzhen Changxin Automation Equipment Co Ltd -————————
Products that have been released are welcome for consultation. Due to the wide variety of models, we were unable to upload physical images one by one!
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Parameter Specifications
| Item | Specifications |
|---|---|
| Model | UNITROL 5000 |
| Product type | Digital static excitation system |
| Applicable generator | Medium & large synchronous generator |
| Excitation DC current range | 1000A ~ above 10000A DC |
| Grid frequency | 16 2/3 Hz, 50 Hz, 60 Hz, up to 400Hz |
| Voltage regulation accuracy | ≤ ±0.5% |
| Control mode | Auto voltage regulation / Manual field current regulation |
| Redundancy | Dual channel redundant regulator |
| Built-in function | PSS, V/Hz limiter, overcurrent, loss-of-excitation protection |
| Communication interface | Profibus, RS485, Ethernet |
| Cabinet protection class | IP23 / IP54 optional |
| Ambient operating temperature | 0℃ ~ +55℃ |
| Design service life | 30 years |
| Mounting | Floor standing cabinet installation |
| Origin | Switzerland |











