ABB Unitrol 1020 3BHE036163R6206 Digital Excitation Automatic Voltage Regulator

Product Brief Description

The ABB Unitrol 1020, part number 3BHE036163R6206, is a compact full digital automatic voltage regulator (AVR) belonging to ABB UNITROL 1000 excitation series. Built with dual-processor DSP architecture and integrated IGBT power stage, it is designed for synchronous generators up to 50MVA. This DIN-rail mount excitation controller maintains stable generator terminal voltage and reactive power control, supports single or dual redundant configuration, and integrates comprehensive protection algorithms, local HMI and multiple industrial communication ports for small and medium power generation units.

Product Functions

• Real-time closed-loop regulation of generator excitation current to stabilize terminal voltage, reactive power and power factor
• Complete excitation protection functions: over-excitation, under-excitation, V/Hz limitation, excitation overcurrent and rotating diode fault monitoring
• Supports generator synchronization, parallel operation and reactive load sharing for multiple gensets on the same grid
• Local LCD keypad HMI for parameter setup, real-time measurement reading, alarm display and manual operation
• Equipped with Ethernet and serial communication interfaces to connect with SCADA, DCS and remote monitoring systems
• CMT1000 PC configuration software for off-line parameter editing, online commissioning, trend recording and fault diagnosis

Application Scenarios

• Small & medium hydroelectric and thermal power synchronous generator excitation control
• Backup diesel generator, waste heat generator and captive power plant units
• Marine power station and offshore platform auxiliary generator voltage control
• Biomass power plant, gas engine generator and distributed power generation projects
• Industrial self-owned power station synchronous motor excitation and grid interconnection control

Frequently Asked Questions