UNITROL1020 3BHE030579R0003 automatic voltage regulator

The automatic voltage regulator UNITROL 1020 3BHE030579R0003 is an automatic voltage regulator produced by ABB, belonging to the UNITROL 1000 series, which is mainly used for excitation control of small and medium-sized synchronous generators and industrial motors. Here's how:

Functional characteristics

Multiple control modes: automatic voltage control function, equipped with adjustable PID controller; With power factor and reactive power controller, PID control algorithm; It is also equipped with a magnetic field current regulator, which is controlled by PI. It can realize reactive power distribution of parallel running generators, as well as related control during isolated island operation, and can automatically synchronize and perform voltage matching before synchronization.

Rich monitoring and protection features: backup and setpoint tracking for redundant channel systems via a reliable CAN bus. It has enhanced system monitoring functions, such as voltage transformer monitoring, synchronous check function, rotating diode monitoring function, and a variety of limiter functions, such as excitation current limiter.

Data logging and communication: with data logger and trend logging function, data logging can be automatically and manually triggered to record measured values and user selected data, event logger function can record relevant information with time and date information. Support for full-featured Modbus communication over standard Ethernet and RS485, easy configuration and measurement of readings via a powerful regulator LCD panel, and a powerful and user-friendly debugging and maintenance software tool, the CMT1000, for easy parameter setting, monitoring, trend analysis and optimization.

Technical advantages: Using the most advanced microprocessor technology and IGBT semiconductor manufacturing, the current output can reach 20A during continuous operation. Delivers high performance under a wide range of temperature and vibration conditions and is fully compliant with DNV and UL standards. Robust dual-processor technology maintains control of regulation even when Ethernet communications are disrupted.

Application: Can be widely used in power plants, substations, distribution networks, industrial and mining enterprises, data centers and other fields, for generator excitation control and power system voltage regulation, to ensure the stable operation of the power system.

Externally, it has a polymer housing to protect live parts from electric shock, a sturdy aluminum base plate for high vibration applications, and can be installed directly in the machine junction box. The front panel has LED indicators for power, excitation, alarm, and more, as well as a local human-machine interface, including an intuitive local control panel that displays AVR status, active limiter, and measured values, with parameters that can be changed through local controls