ABB UNITROL 1010 BASIC 3BHE035301R0003 Excitation Control Module
Product Overview
The ABB UNITROL 1010 BASIC 3BHE035301R0003 is a compact, high‑performance digital excitation controller (AVR) belonging to ABB’s UNITROL 1010 series, designed for small‑to‑medium synchronous generators up to 80 MVA. As the “BASIC” variant, it integrates core regulation, I/O, and protection functions in a single unit, optimized for cost‑effective, space‑saving excitation control in industrial power plants, hydro/thermal units, and captive power systems.
Key Features
Precision Voltage Regulation
Delivers ±0.5% steady‑state voltage regulation accuracy with a dynamic response time <30 ms, complying with IEEE 421.5 and IEC 61000‑6‑2 standards for grid stability.
Core Control Modes
Supports automatic voltage regulation (AVR), constant reactive power (VAR), constant power factor (PF), and manual field current control with bumpless transfer for seamless switching between grid and island operation.
Integrated Protection & Monitoring
Built‑in protection for over‑excitation, under‑excitation, field overcurrent, loss‑of‑excitation, overvoltage/undervoltage, and overtemperature. Real‑time fault logging with time stamps enables predictive maintenance and fast troubleshooting.
Compact & Rugged Design
All‑in‑one construction with integrated power supply and I/O; IP20 protection. Conformal‑coated PCB for harsh environments; panel‑mountable with minimal clearance (50 mm top, 20 mm bottom) for tight cabinets.
Versatile I/O Interfaces
Equipped with 4 analog inputs (CT/PT, 0–10 V, 4–20 mA), 2 analog outputs, 8 digital inputs, 6 digital outputs for excitation, grid, and auxiliary signal integration.
Industrial Communication
Supports Modbus RTU (RS‑485), Modbus TCP for connection to PLC, SCADA, and DCS systems; optional IEC 61850 for grid‑compliant communication.
Wide Environmental Tolerance
Operating temperature ‑25°C to +60°C (extended to ‑40°C to +70°C optional); storage temperature ‑40°C to +85°C; humidity 5%–95% non‑condensing.
Technical Specifications
Manufacturer: ABB
Model: 3BHE035301R0003 (UNITROL 1010 BASIC)
Product Type: Digital Excitation Controller / AVR Module
Applicable Generators: Up to 80 MVA synchronous generators
Input Voltage: 85–264 VAC, 50/60 Hz (120/230 VAC nominal)
Power Consumption: ≤30 VA
Regulation Accuracy: ±0.5% (steady state)
Response Time: <30 ms (95% step response)
Analog I/O: 4 AI / 2 AO
Digital I/O: 8 DI / 6 DO
Communication: Modbus RTU/TCP, RS‑485; IEC 61850 optional
Protection Functions: Over‑excitation, under‑excitation, field overcurrent, loss‑of‑excitation, overvoltage, undervoltage, overtemperature
Operating Temperature: ‑25°C to +60°C
Storage Temperature: ‑40°C to +85°C
Protection Class: IP20
Dimensions (W×H×D): 120 × 260 × 85 mm
Weight: 2.3 kg (approx.)
Certifications: CE, UL, RoHS, DNV‑GL
Core Functions
The 3BHE035301R0003 performs closed‑loop excitation control by real‑time sampling of generator voltage, current, and grid parameters. It executes PID control algorithms to adjust thyristor firing angles, stabilizing output voltage and damping low‑frequency oscillations. The module also provides system‑wide health monitoring, fault diagnosis, and protective tripping/de‑excitation commands, with data logging for maintenance compliance.
Typical Applications
Industrial Power Plants: Steel, chemical, pulp/paper, and petrochemical on‑site generators (5–80 MVA).
Hydro & Thermal Power: Small‑to‑medium hydroelectric and thermal units for grid or isolated operation.
Captive Power & Gensets: Critical infrastructure and remote site gensets requiring stable voltage and reactive power control.
Retrofit Projects: Direct replacement for legacy ABB UNITROL 500/1000 series AVRs, offering modern digital features with minimal panel modification.
Compatibility & Compliance
Fully compatible with ABB UNITROL 1010 series rectifiers, power supplies, and accessories. Interfaces with standard CT/PT signals and third‑party PLC/SCADA via Modbus. Complies with IEC 61000‑6‑2/4 (EMC), IEEE 421.5, and global grid codes for safety and performance.
Advantages
Cost‑Effective & Compact: BASIC variant delivers core excitation functions with minimal panel space and lower system cost.
Proven Reliability: Rugged components and conformal coating ensure long‑term operation in harsh industrial environments.
Fast & Precise Control: High accuracy and rapid response enhance power quality and grid stability.
Easy Integration: Standard I/O and communication protocols simplify connection to new or existing control systems.
Global Support: Backed by ABB’s worldwide service network, including technical support and genuine spare parts.
Get a Quote