ABB Unitrol UNS 4901 AV1000 Drive Unit

Description

TheABB Unitrol UNS 4901 a V1000is a controller module used within theUnitrol 6000 excitation systemfor synchronous generators and motors. It provides precise voltage regulation, fast dynamic response, and high reliability for demanding industrial and utility environments. Built on ABB’s modular digital control platform, it supports bothautomatic voltage regulation (AVR)andmanual control, making it suitable for new installations as well as retrofit modernization projects.