ABB UNITROL 1010 BASIC+SYNC 3BHE035301R0004 Excitation Control Module
Product Overview
The ABB UNITROL 1010 BASIC+SYNC 3BHE035301R0004 is a compact, high-performance digital excitation controller (AVR) from ABB’s UNITROL 1000 series, designed for small-to-medium synchronous generators up to 100 MVA. As the BASIC+SYNC variant, it integrates core regulation, synchronization, 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 requiring grid synchronization capability.
Key Features
Precision Voltage Regulation
Delivers ±0.2% steady-state voltage regulation accuracy with a dynamic response time <25 ms, complying with IEEE 421.5 and IEC 61000‑6‑2 standards for superior grid stability.
Extended Control Modes
Supports automatic voltage regulation (AVR), constant reactive power (VAR), constant power factor (PF), and manual field current control with bumpless transfer. The integrated SYNC function enables automatic voltage matching and synchronization for seamless grid connection.
Comprehensive Protection & Monitoring
Built‑in protection for over‑excitation, under‑excitation, field overcurrent, loss‑of‑excitation, overvoltage/undervoltage, overtemperature, and short‑circuit. Real‑time fault logging with time stamps and event recording 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 industrial environments; panel‑mountable with minimal clearance (50 mm top, 20 mm bottom) for tight control 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; includes a 24 V DC/600 mA output for external relays.
Industrial Communication
Supports Modbus RTU (RS‑485), Modbus TCP, and CANopen for connection to PLC, SCADA, and DCS systems; USB port for configuration via ABB’s CMT 1000 tool.
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: 3BHE035301R0004 (UNITROL 1010 BASIC+SYNC)
Product Type: Digital Excitation Controller / AVR Module with Synchronization
Applicable Generators: Up to 100 MVA synchronous generators
Input Voltage: 85–264 VAC, 50/60 Hz (120/230 VAC nominal)
Output (Exciter Field): 0–300 V DC, up to 10 A continuous
Power Consumption: ≤40 VA
Regulation Accuracy: ±0.2% (steady state)
Response Time: <25 ms (95% step response)
Analog I/O: 4 AI / 2 AO
Digital I/O: 8 DI / 6 DO
Communication: Modbus RTU/TCP, RS‑485, CANopen; USB for configuration
Protection Functions: Over‑excitation, under‑excitation, field overcurrent, loss‑of‑excitation, overvoltage, undervoltage, overtemperature, short‑circuit
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: 2.8 kg (approx.)
Certifications: CE, UL, RoHS, DNV‑GL, SIL 2
Core Functions
The 3BHE035301R0004 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 integrated SYNC function automates voltage matching and phase synchronization for safe grid connection. 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 (5–100 MVA) requiring grid synchronization.
Hydro & Thermal Power: Small‑to‑medium hydroelectric and thermal units for grid‑connected or isolated operation.
Captive Power & Gensets: Critical infrastructure and remote site gensets needing stable voltage, reactive power control, and seamless grid integration.
Retrofit Projects: Direct replacement for legacy ABB UNITROL 500/1000 series AVRs, adding modern digital control and synchronization 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/CANopen. Complies with IEC 61000‑6‑2/4 (EMC), IEEE 421.5, and global grid codes for safety and performance; certified SIL 2 for critical applications.
Advantages
All‑In‑One Solution: Combines BASIC regulation and SYNC functionality, eliminating the need for separate synchronization modules.
High Precision & Reliability: ±0.2% accuracy and rugged design ensure stable operation in harsh industrial environments.
Seamless Grid Integration: Integrated SYNC function simplifies and automates grid connection, reducing operational risk.
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.
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