ABB UNITROL1010 3BHE035301R0003 Digital Excitation Regulator

Basic Information

Full Order Number: 3BHE035301R0003 Model: UNITROL1010 BASIC Product Series: UNITROL 1000 Device Type: Compact Digital Excitation Regulator (Automatic Voltage Regulator, AVR) Application: Medium‑small brushless synchronous generators, for captive power plant, gas/diesel generator sets, marine power station, small hydropower, synchronous wind turbine units.

Excitation Output: Continuous excitation current 10A DC @55℃; 10s short‑time overload 25A DC Voltage Regulation Accuracy: ±0.5% Auxiliary Power Supply: AC 9‑300V / DC 18‑420V, wide AC/DC input Operating Frequency: 25‑600Hz, support 50Hz /60Hz and variable‑speed units I/O Configuration: 8 Digital Inputs, 4 Digital Outputs; 3 Analog Inputs, 2 Analog Outputs Communication Interfaces: Ethernet (Modbus TCP), USB, RS485 Commissioning Software: CMT1000 Operating Temperature: ‑40℃ ~ +70℃ Protection Class: IP20 Certifications: CE, UL, DNV marine certification Lifecycle: Within OEM service period; new original spare parts available, second‑hand and refurbished units also available on market.

Main Control Functions

1. Automatic Voltage Regulation (AVR)
2. Field Current Regulation (FCR)
3. Power Factor (PF) control, Reactive Power (VAR) control; bumpless transfer between modes
4. Reactive load sharing for parallel generator operation
5. Auto‑synchronization and voltage matching
6. Rotating Diode Monitoring
7. Multiple limiters: max/min field current limiter, V/Hz limiter, PQ limiter, stator current limiter

Monitoring & Recording Functions

• Event recorder & data logger with time stamp
• Excitation system fault diagnosis and alarm output
• Real‑time monitoring of generator voltage, field current, reactive power and power factor

Compatibility Notes

1. Full order number 3BHE035301R0003 (BASIC version); Distinguish from LIGHT version 3BHE035301R0002. Firmware function packages cannot be interchanged.
2. Successor hardware UNITROL1020 (rated excitation current 20A), same dimension and interface with higher output capacity.
3. Drop‑in replacement for legacy UNITROL1000‑7 BASIC.
4. Parameter file must match firmware version; re‑download project parameters is recommended after module replacement.