Overview

The ABB UNS0119A-Z,V1 (Part No. 3BHE030579R0207) is a digital Automatic Voltage Regulator (AVR) designed for high-performance synchronous generator excitation systems. It ensures stable generator terminal voltage under rapidly changing load conditions, supporting both grid-parallel and island-mode operation.

Built as part of the UNITROL family, this controller delivers fast regulation, enhanced monitoring, and advanced protection features to maximize generator reliability and operational safety. Its rugged enclosure, wide temperature tolerance, and flexible mounting options make it suitable for harsh environments such as power stations, offshore platforms, and industrial facilities.

For example, in a hydroelectric power plant, the UNS0119A-Z,V1 maintains precise voltage regulation during transient events like load rejection or grid disturbances.

Technical Data

Application

The UNS0119A-Z,V1 is particularly well-suited for mission-critical environments requiring both reliability and rapid fault response.

FAQ

Q: Which excitation systems is this AVR compatible with?
A: ABB UNITROL-based excitation architectures and compatible synchronous generator systems.

Q: What protection functions are included?
A: Over/under-voltage monitoring, excitation loss detection, and detailed fault diagnostics.

Q: Is it suitable for renewable and marine installations?
A: Yes — widely used on ships and in hydro/wind power applications.

Q: Is RoHS compliance supported?
A: The device is industrial-use exempt under directive EU 2011/65/EU.

Q: What is the warranty period?
A: Standard 12-month ABB warranty coverage.