Description
Product Overview
The ABB UNITROL1000 3BHE006720R0200 is a digital automatic voltage regulator (AVR) belonging to ABB UNITROL1000 excitation control family, designed for synchronous generators ranging from 100kVA up to 80MVA. This controller provides high-precision generator voltage regulation, reactive power and power factor control, together with full excitation limit protection functions. It adopts dual independent processor architecture for control and communication, supporting fast transient response under grid disturbance and load fluctuation. Integrated limiters include overexcitation, underexcitation, V/Hz and stator current limiting, fulfilling global grid code requirements. It supports CMT1000 commissioning software, Ethernet, USB and serial communication interfaces to connect with DCS, SCADA and local HMI. Widely applied in hydro, gas turbine, steam turbine generator sets, marine power systems and industrial backup power plants, stocked as critical spare for generator excitation cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | UNITROL1000 3BHE006720R0200 |
| Manufacturer | ABB |
| Product Category | Digital Excitation AVR Controller |
| Applicable Generator Capacity | 100 kVA ~ 80 MVA synchronous machine |
| Regulation Modes | AVR, FCR, PF, VAR control |
| Voltage Regulation Accuracy | ±0.1% at 25°C |
| Transient Response | <20ms for 3-phase measurement |
| Control Architecture | Separate control processor and communication processor |
| Communication | Ethernet, USB, serial port, Modbus TCP |
| Commissioning Tool | CMT1000 PC software |
| Built-in Protection | V/Hz limiter, over-excitation limiter, under-excitation limiter, stator current limiter, fault ride through (FRT) |
| Power Input | Wide range AC / DC auxiliary supply |
| Mounting | Rack / cabinet plug-in module |
| Operating Temperature | -40°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~95% non-condensing |
| Approximate Weight | 2.1 kg |
Compliance & Certifications
- CE mark for EMC and Low Voltage Directive
- IEC standard for generator excitation systems
- RoHS compliant
- Factory full functional test, excitation loop simulation and firmware verification before shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Remain sealed inside original anti-static packaging before installation
- Protect from mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required when unpacking and handling PCB assemblies
Installation Instructions
- Perform lock-out/tag-out of generator high voltage and excitation power circuits before replacement
- Wear ESD protective gear to avoid electrostatic damage to circuit boards
- Insert module into designated excitation cabinet rack slot and lock firmly
- Wire PT/CT measurement signals, excitation output, discrete I/O and communication cables; separate low-level signal wiring from high-power excitation cables
- Connect Ethernet / USB port for CMT1000 commissioning software
- Apply auxiliary control power, upload application parameters and configure generator characteristic settings
- Complete static test, no-load voltage regulation test and on-load reactive power control test
- Verify all limiters and protection functions; commissioning must be performed by certified ABB excitation system technicians
FAQ
Q: What is UNITROL1000 3BHE006720R0200 used for? A: It is a digital AVR excitation controller for synchronous generators, responsible for generator voltage control, reactive power management and excitation protection.
Q: What communication interfaces are available? A: Ethernet Modbus TCP, USB and serial port; USB supports parameter downloading and diagnosis without main power supply.
Q: What control modes does this AVR support? A: Automatic voltage regulation (AVR), field current regulation (FCR), power factor (PF) and reactive power (VAR) control.
Q: What is CMT1000? A: CMT1000 is ABB official PC commissioning tool for UNITROL1000 series, used for parameter configuration, data logging and fault diagnosis.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested controllers operated under rated normal operating service conditions.
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