120A Automatic
Voltage Regulator

The EX2100e 120A Automatic Voltage Regulator (AVR) is part of the growing family of generator controls for gas, steam, and hydro turbine-generators from GE.

The highly reliable and flexible EX2100e combines decades of performance experience with enhanced technology drawn from the Mark* VIe control platform.

This 100 amp class solution supports several excitation system applications, including brushless and rotating DC exciters as well as SCT/PPT regulator modernizations.


Features and Benefits

Advanced Controls:

Provides industry-leading control, limiter, and protective functions to maximize generator performance and improve protection for a variety of applications.


Two available power converters (35A and 120A DC max) allow the EX2100e AVR hardware to be optimized for most applications and budgets.

Flexible Packaging:

Systems can be specified as a freestanding 800 mm x 800 mm (31 ½” x 31 ½”) IP20 /NEMA 1 (optional IP54) panel configuration, as parts kits for custom installations or retrofits where space is a premium, saving time and money.

HMI Options:

Systems can be configured to meet the needs of the site operational and engineering staff. Options for interfaces range from local desktop versions or remote touch screens. GE offers Windows 7 based systems that can be included in any cyber security environment .

Software Tools:

GE's ControlST* utilizing the CIMPLICITY* Advanced Viewer provides operators and engineers a powerful set of tools for system configuration, maintenance tasks, and diagnostics with a single interface. Advanced data visualization, alarm management, (all in a sequence of events), integrated oscillography, guided help and more give engineers and operators more control and better system management tools.

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The EX2100e 120A provides the best fit for your 100 amp class excitation needs.


Based on the Mark VIe control platform, the hardware and software architecture is designed and tested to meet today’s rigorous cyber security standards and is Achilles certified.


The EX2100e AVR integrates seamlessly into almost any plant environment, whether as part of an integrated GE Mark VIe or third-party control system utilizing OPC® Data Access (DA) or Modbus®.


The EX2100e family of products is designed with the future in mind. The enhanced "e" architecture provides a flexible approach to life cycle management. The system is designed to allow incremental upgrades or modernization, improving access to new features and protecting the investment from the rapid aging of digital component technology.


GE has a portfolio of aftermarket products and services to maximize the life of the E2100e AVR and reduce its overall life cycle cost. GE's support combines new, repaired and remanufactured parts, global field services, and the ControlsConnect web portal with a parts and services agreement to provide a world-class experience for our customers.


GE is a global leader in excitation technology for both new unit and retrofit applications. A worldwide network of dedicated retrofit specialists support excitation modernization projects on all types and manufacturers of generator controls.