3BHE030579R0003 ABB UNITROL 1020 AVR Control Unit
Description
3BHE030579R0003 ABB UNITROL 1020 AVR Control Unit is a high-performance excitation regulator designed for precise control of synchronous generators. It acts as a voltage stabilizer for generator systems, managing synchronous generator excitation current to deliver automatic voltage regulation (AVR) and power system stabilization (PSS) functions. It operates by measuring generator terminal voltage and current, calculating reactive power in real time, and outputting trigger pulses to thyristor rectifier bridges to adjust exciter or static excitation system output.
| Specification | Value |
|---|---|
| Product Type | Excitation Regulator Control Unit |
| Power Supply Voltage | 24 VDC (18-30 VDC) |
| Maximum Power Consumption | 15W |
| Measurement Input | Generator terminal voltage (3×100V or 3×400V) |
| Control Output | Thyristor trigger pulses (analog/digital) |
| Communication Interface | RS485 (Modbus RTU), optional Profibus-DP |
| Mounting Method | DIN rail mounting (TS35) |
| Operating Temperature | 0 to 60 degrees Celsius |
| Storage Temperature | -25 to 70 degrees Celsius |
| Protection Class | IP20 |
| Certification Standards | CE, IEC 61000-6-2, IEC 60255 |
| Voltage Regulation Accuracy | Static voltage regulation rate ≤ ±0.5% |
| Dynamic Response Time | Less than 20ms |
Key Features:
- High precision voltage regulation with fast dynamic response to minimize voltage fluctuations during load changes
- Integrated AVR and PSS functions to suppress grid low-frequency oscillations and enhance system stability
- Built-in self-diagnosis function for quick fault identification via LED indicators
- Wide input voltage range and industrial-grade design for reliable operation in harsh environments
- Supports communication with upper-level systems for remote monitoring and control
- Designed for seamless integration with UNITROL system control logic and protection curves
Applications:
- Diesel generator sets for primary or backup power systems
- Small hydropower stations for hydro-generator excitation control
- Shipboard power stations to handle frequent load fluctuations
- Critical facilities such as data centers, hospitals, and airports to ensure stable power quality
- Industrial facilities including factories, mines, and chemical plants
Related Models:
- 3BHE030579R0001 UNITROL 1020
- UNITROL 1020 UNS0119A-Z,V1
- UNITROL 1020-0003 Basic Type