ABB UNITROL 1000 3BHE006720R6001 (excitation main control board/AVR control unit)

ABB UNITROL 1000 3BHE006720R6001 (excitation main control board/AVR control unit)

1、 Product Details
Original factory: ABB Switzerland | Order code: 3BHE006720R6001 | Belonging series: UNITRAL1000 (1020 model main control CPU board)
Product positioning: UNITOLO1020 excitation regulator core control circuit board, the whole machine is a compact all digital IGBT excitation AVR, responsible for synchronous generator excitation closed-loop control, voltage/reactive power/power factor adjustment, and is the computing core board of the entire excitation device.
core functionality
Four mode undisturbed switching: AVR constant voltage, FCR constant excitation current, PF constant power factor, VAR constant reactive power control;
Built in PSS power system stabilizer, over excitation/under excitation/over-current/demagnetization full series generator protection logic;
Onboard communication driver: Modbus RTU, Ethernet, USB debugging port, paired with CMT1000 upper software parameter tuning and fault recording;
Panel buttons+digital display screen, allowing for local viewing of unit parameters and fault codes;
Original factory normal mass production without production stoppage, imported spare parts with original packaging, and new original/disassembled spare parts in circulation on the market are all ABB Group.
Product advantages
Full DSP digital operation, high voltage regulation accuracy, fast response speed, passed DNV classification and CE power certification, anti vibration, wide temperature adaptability to harsh working conditions in power plants/ships.
2、 Key technical parameters
table
Parameter project technical specifications
Compatible with machine model UNITOL 1020 (20A continuous excitation output, short-term 40A/10s overload)
Control accuracy, static voltage regulation accuracy ≤ 0.2%, three-phase measurement response ＜ 20ms, single-phase ＜ 50ms
Work power supply auxiliary power supply AC9~300V/DC9~420V wide range AC/DC power supply
Communication interface RS485 (Modbus RTU)+Ethernet+USB debugging port
I/O terminals with 3 analog inputs and 2 analog outputs; Multi channel digital DI/DO switch terminal
Environmental temperature working -20 ℃~+55 ℃, storage -40 ℃~+70 ℃
Protection level IP20 (cabinet rail installation), reinforced with aluminum substrate to resist vibration
The weight of the board is about 0.72kg; the overall size is 300 × 202 × 138mm
Suitable for small and medium-sized synchronous generators with a capacity of 100kVA to 40MVA, ABB Group

3、 Related models in the same series
1. Same series machine models (corresponding to different power main control boards)
UNITRAL1005 (5A excitation): Plate code 3BHE006719Rxxxx, dedicated for small power diesel units
UNITRAL1010 (10A excitation): Plate 3BHE006718Rxxxx, basic economy model
UNITOLO1020 (20A, corresponding model): 3BHE006720R6001, standard universal main model
UNITOL-PM40 (40A power expansion): External power expansion board, paired with 1020 expansion to 40A output
2. Derivative spare parts with the same code
3BHE006720R6000: Same PCB hardware, firmware version difference;
3BHE006720R6002: With moisture-proof three proof coating, special for chemical/humid environments.
3. Upgrade replacement series
UNITROL FLEX dual channel excitation, UNITROL6000 high-power excitation system (replaced by>80MW units) ABB Group.
4、 Application Fields
Thermal power/hydropower plants: excitation and voltage stabilization of small and medium-sized steam turbine and water turbine synchronous generator units, and self provided waste heat power generation equipment for power plants;
Diesel/gas power stations: distributed gas turbines, diesel generator sets, and main excitation control for mine owned power stations;
Marine engineering: ABB Group for offshore ship main generator sets and auxiliary power supplies for offshore drilling platforms (DNV marine certification);
Oil and gas chemical industry: Refineries provide their own generators and synchronous motor excitation systems for natural gas compressors;
Rail Transit/Industrial and Mining: Locomotive Power Generation, Steel Plant Self owned Power Plant, Large Pump Station Synchronous Motor Voltage Regulating Control ABB Group

For more models or procurement inquiries, please contact:

Contact Manager Luo
Phone+86 180 3018 3032
Email to: 3248602330@qq.com