ABB UNITROL1000 3BHE014557R0003 Automatic Voltage Regulator

Description

Technical Specifications

• Product Type: Digital Automatic Voltage Regulator / Excitation ControllerABB
• Processor: 32-bit RISC processor, 100 MHz clock speed
• Memory: 512 KB RAM, 2 MB non-volatile flash memory
• Continuous Excitation Current: Up to 20 ADC (at 55°C)
• Overload Excitation Current: 40 ADC for 10 seconds
• Voltage Regulation Accuracy: ±0.2% of rated voltage
• Response Time: ≤ 10 ms for voltage regulation adjustments
• Auxiliary Power Supply:
  • AC Input: 9–300 VAC (3-phase, sinusoidal)
  • DC Input: 18–300 VDC (wide-range compatibility)
• I/O Configuration:
  • Analog Inputs: 3 configurable channels (0–10 V / 4–20 mA)
  • Analog Outputs: 2 configurable channels (0–10 V / 4–20 mA)
  • Digital Inputs: 8 isolated 24 VDC channels
  • Digital Outputs: 8 relay outputs (24 VDC, 600 mA)
  • Expandable I/O: Up to 60 digital I/O and 32 analog I/O points
• Communication Interfaces:
  • Ethernet (TCP/IP, Modbus TCP)
  • RS-232, RS-485 (Modbus RTU)
  • CANopen, USB (local configuration)
  • High-speed backplane bus for 800xA system integration
• Isolation: 2.5 kV galvanic isolation between field and control circuits
• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5% – 95% RH (non-condensing)
• Vibration Resistance: 5 g (10 Hz – 2000 Hz)
• Dimensions: 22.5 mm × 80 mm × 30 mm (W×H×D)
• Weight: Approx. 0.2 kg
• Protection Rating: IP20 (standard), upgradeable to IP54
• Certifications: IEC 61010, IEEE 421.5, CE, UL, DNV, CSA

Key Features

• Ultra-Precise Voltage Control: Delivers ±0.2% regulation accuracy and ≤10 ms response time, maintaining stable power quality during load fluctuations and grid events.
• Dual Processor Architecture: Separate control and communication processors ensure real-time regulation performance and reliable data exchange without performance degradationeero.
• Integrated Power System Stabilizer (PSS): Built-in PSS functionality mitigates power system oscillations, enhances grid stability, and complies with global grid codesABB.
• Advanced Excitation Control: Supports both rotating and static excitation systems, with configurable PID algorithms and adaptive control for optimal machine performance.
• Comprehensive Protection Suite: Includes overvoltage, undervoltage, overexcitation, underexcitation, overcurrent, loss-of-field, field ground, and short-circuit protection to safeguard generators and excitation systems.
• Flexible I/O & Configuration: Freely configurable analog/digital I/Os and parameter settings via local HMI or ABB CMT1000 PC software, adapting to diverse machine setupsABB.
• Multi-Protocol Communication: Supports Ethernet, Modbus RTU/TCP, CANopen, and USB, enabling seamless integration with PLCs, DCS, SCADA, and remote monitoring systems.
• Built-In Diagnostics & Logging: Continuous self-monitoring of field windings, sensors, and communication links; event logging and fault diagnostics for rapid troubleshooting.
• Automatic Synchronization: Facilitates safe grid connection by automatically matching generator frequency, voltage, and phase with the utility grid.
• Parallel Generator Load Sharing: Advanced dual-channel support for precise load distribution between multiple parallel-operating machines.
• Rotating Diode Monitoring: Real-time monitoring of exciter rotating diodes, preventing unplanned downtime and ensuring excitation system integrity.
• Industrial-Grade Durability: Robust mechanical design with conformal coating, wide temperature tolerance, and high vibration resistance for reliable operation in harsh environments.
• Cyber-Secure Design: Certified to DNV Cyber Security Profile 1, ensuring protection against cyber threats in critical power applicationsABB.

Application Scenarios

• Land-Based Power Generation: Controls synchronous generators in diesel, gas, steam, and hydro turbine power plants (100 kVA–80 MVA), ensuring stable voltage and grid complianceABB.
• Marine & Offshore: Manages generator excitation for ship electrical propulsion systems, auxiliary power supplies, and offshore platforms, meeting DNV marine certificationseero.
• Industrial Cogeneration: Regulates voltage in combined heat and power (CHP) plants, optimizing energy efficiency and grid stability for industrial facilitiesABB.
• Wind Power Generation: Controls direct-connected synchronous wind generators, supporting stable grid integration and variable wind speed operation.
• Traction & Rail: Provides excitation control for diesel-electric locomotives and rail auxiliary power systems, ensuring reliable power delivery in transportation applicationseero.
• Oil & Gas Industry: Operates generator sets in offshore drilling rigs, refineries, and pipeline pumping stations, withstanding harsh environmental conditionsABB.
• Mining & Minerals Processing: Controls power generation for mining operations, including crushers, mills, and material handling systems, ensuring continuous power supply.
• Data Centers & Critical Infrastructure: Regulates backup generator voltage for data centers, hospitals, and critical facilities, guaranteeing uninterrupted power during outagesABB.
• Synchronous Motor Drives: Provides excitation control for large synchronous motors in industrial drives, pumps, and compressors, optimizing motor efficiency and performanceABB.
• Harbor & Port Equipment: Manages excitation for harbor cranes and heavy-duty port machinery, ensuring stable operation under dynamic load conditions.