High Voltage Direct Current (HVDC) systems enable utilities to move more power further, efficiently integrate renewables, interconnect grids, and improve network performance. HVDC systems utilize power electronics technology to convert AC and DC voltage and are ideal for supporting existing systems or building new power highways.


GE Vernova provides solutions that offer grid operators the ability to provide reactive power support, enhance controllability, improve stability and increase power transfer capability of AC transmission systems.


GE Vernova's Grid Solutions' EBoP systems cater to all types of project requirements including supplying equipment, engineered packages, and full engineering, procurement and construction (EPC) implementations.


GE Vernova offers solutions for a variety of substation projects and applications, including Modular Substation Automation Systems, utility and industrial substation projects, as well as DC substation solutions.


The energy landscape today is changing, this is being led by the current industry trends of Decarbonization, Digitization, Decentralization and Electrification. Discover how GE Vernova is working with utility, consumer and industrial customers to design and deploy tailored Microgrid and Distributed Energy Resource (DER) Management solutions.


GE Vernova offers a wide range of transformer solutions for the utility, industrial, commercial, residential and energy markets. These solutions feature flexible, reliable and robust designs to support a wide range of applications. With units operating in some of the most demanding electrical environments around the world, GE Vernova designs and delivers transformer solutions that provide among the highest level of performance and reliability to meet rigorous operating requirements.


GE Vernova provides GIS solutions from 50 kV to 800 kV, along with secondary products to maximize switchgear and network operation. The portfolio includes a full range of SF6 GIS as well as g3 (SF6-free) GIS at 145 kV and 420 kV voltage levels for utilities and industries worldwide.


GE Vernova is one of the top circuit breaker suppliers in the world. Our products include a range of live tank circuit breakers (up to 800 kV), dead tank circuit breakers (up to 550 kV), as well as hybrid and compact switchgear assemblies. We also provide solutions for power generation applications with our generator circuit breakers for installations up to 1,500 MW.


GE Vernova is a global market leader for disconnectors (disconnect switches) since 1960, with 8 product facilities in 7 countries and hundreds of thousands installations in more than 130 countries around the world. The portfolio includes disconnectors for AC applications (up to 1,200 kV), for DC applications (up to 1,000 kV) and for railway applications. We also offer power connectors to connect two or more conductors for a continuous electrical path.


GE Vernova is an industry leader in the design and manufacturing of high, medium and low voltage instrument transformers. With more than 100 years of experience, We offer a broad array of standard and high accuracy models for revenue metering and system protection applications. The portfolio of instrument transformers ranges from low voltage at 600 V suitable for industrial and high accuracy revenue metering, all the way up to high voltage at 1,200 kV. The portfolio also includes line traps and digital instrument transformers.


For a century, utilities have relied on us to deliver electrical products and services to meet their quality, durability and performance needs. Our capacitor and reactor product lines are an integral part of our portfolio. We provide power capacitors that meet ANSI, IEEE and IEC standards, and our low voltage capacitors are UL listed. Ratings range from 1 kvar to 500 MVAR, and from 240 volts to 500 KV.


GE Vernova provides a broad range of bushings and surge arresters to help protect electrical assets. The bushings portfolio includes AC and DC solutions that enable long life, high reliability and installation flexibility. GE’s Tranquell surge arresters are ideal for distribution and EHV applications up to 612kV, and are available as polymer and porcelain station and intermediate class IEEE/ANSI C62.11.

Product Categories


SF6 (or Sulphur Hexafluoride) has been the standard gas used inside high voltage electrical equipment as an insulating and arc-quenching medium. However, SF6 is also listed as a potent greenhouse gas according to the Kyoto Protocol, with 24,300 times the comparative Global Warming Potential (GWP) of CO2 and a lifetime of 1,000 years in the atmosphere. With grid operators across the world becoming increasingly concerned about the environmental impact, GE Vernova offers a commercially available and viable alternative to SF6 to help utilities and industries reduce their environmental impact.


GE Vernova offers a wide range of solutions to monitor and manage critical assets on the electrical grid, detect and diagnose issues and provide expert information and services to customers. Our asset monitoring and diagnostics portfolio includes solutions for single- and multi-gas transformer DGA, enhanced transformer solutions and switchgear monitoring, as well as software and services.


GE Vernova's Grid Solutions business electrifies the world with advanced grid technologies and systems, enabling power transmission and distribution from the grid to homes, businesses, and industries effieciently and reliably.

The GridBeats™ portfolio is designed to streamline grid digitalization, improve grid resilience, and empower utilities to manage their networks remotely, particularly in the face of the energy transition.


GE Vernova's Critical Infrastructure Communications solutions deliver comprehensive networks that are designed to be secure, flexible, and tailored to meet customers' objectives and unique geographic requirements.


GE Vernova's comprehensive portfolio of solutions for implementing and managing a substation.


The collection of required asset condition data from the field on a large scale for GE Vernova and 3rd party electrical equipment is a key step in building a robust Asset Performance Management strategy. Grid Services specialists are constantly evaluating and implementing new innovative inspection technologies applying strict processes and methods. The digital inspections methods are designed to improve the efficiency of data collection, oil analysis and online monitoring. All new approaches to capture data are integrated into the EnergyAPM ecosystem for automatic data transfer.


Business environment is constantly transforming for substation owners but the need to deliver consistent outcomes remains. That’s where a Flexible Service Agreement can help. By partnering with GE Vernova on a long term, customers can realize the full potential of their electrical substations and network assets while balancing performance and investment, along with predictable costs and flexible billing arrangements, letting them get back to focusing on what matters.


Energy costs are significant expenses for utilities and industries at large, particularly those that are energy-intensive or operate heavy machinery. Between 5% and 25%* of the expenses in these organizations are allocated to energy payments, with up to 15%** of this energy consumption being wasted during operations.


GE’s innovative and high-quality services help maintain and optimize high-voltage electrical assets throughout their entire lifecycle. Leveraging the design and manufacturing knowledge of our engineers, the customized service solutions ensure substations and networks perform as planned. Experts deliver services for applications across the power system, keeping assets up-to-date, safe, reliable and efficient while improving customers’ return-on-investment.


GE Vernova provides a full range of services & support tailored to meet a broad range of power system needs across utility and industrial applications. With deep domain knowledge and industry expertise GE’s service application engineers and technical specialists can help plan, design, operate, maintain, and modernize your protection, control, monitoring and automation systems.


GE Vernova provides comprehensive services throughout the systems lifecycle. The services can be provided by our local team and with the support of our global Competence Centers when the equipment is installed, during the warranty period and beyond.


Our technical experts are ready to equip customers with the knowledge needed to effectively manage their critical assets and systems, and increase their return on product investments. Our training courses are offered in a variety of ways, including online, onsite at customer locations, and in our state-of-the art training centers around the world.

GE Vernova provides a vast array of support and service offerings to help customers build, deploy, maintain and service their networks. Our highly skilled engineers and technicians provide front line support for customers across our product portfolio, including protection and control solutions, industrial communications networks, asset monitoring and diagnostics and software solutions.


GE Vernova's Grid Solutions' Testing Laboratories enable manufacturers and end users to test their primary equipment by leveraging deep domain expertise and testing facilities, to develop enhanced high voltage products and certify their capabilities before market introductions.


GE Vernova delivers materials and eco-design studies for high voltage solutions to accelerate insulation and environmental innovation. GE’s services provide the expertise and methods that enable new value to support customer engineering, sourcing, quality control and EHS activities.


With the rapid digitalization of the grid, utility, power generation and industrial operators require cybersecurity solutions to monitor and protect grid asset and systems from increased severity and frequency of cyber attacks. GE Vernova adopted a “defense in depth” approach, providing innovative cybersecurity solutions designed to increase operational integrity, comply with regulations and control costs of security.


Utilities today seek to create and connect new sources of power generation to meet growing global demand, while also managing grid reliability, costs and regulatory factors.


Water is central not just to the economy, but to life. As a result, water treatment systems demand secure, dependable power to ensure process uptime. From the grid-connected substation to reliable electrical protection, control, and power quality metering, GE Vernova offers tailored solutions to keep critical plants operational and meet the unique needs of the water and wastewater industry.


As power systems become increasingly interconnected and complex, utilities need solutions that optimize energy transmission and management while improving reliability.


Data centers – and the information they store – are becoming increasingly integral to the way we live our lives every day. With rising demand also come rising costs. And more importantly, the information in these centers must remain secure while simultaneously accessible. We provide data centers with electrical infrastructure solutions from the input utility source to the IT server racks. This includes high-voltage switchgear and transformers, medium and low voltage electrical equipment, automatic transfer switches, switchboards, UPS systems, critical power PDUs, static transfer switches, and overhead busway. This chain of electrification products provides high quality and reliable products and services for the entire lifecycle of a data center.


The oil and gas industry is evolving at a rate never seen before, facing shifting pricing levels, ever-changing regulatory requirements, and increased environmental consciousness. Through reliable, safe, and innovative solutions and a holistic service offering, GE Vernova can help the energy sector thrive in this changing reality.


Modernizing and digitizing the distribution grid is imperative for utilities and customers to enhance power system stability and safety, while increasingly integrating distributed power and demand response.


The industry is changing. Simultaneously, so are your utility’s needs. Operational effectiveness, power stability, and critical asset management are key priorities – whether in pulp and paper, steel, or data centers. GE’s holistic portfolio of products and services are designed with reliability, innovation, and sustainability at the forefront, helping you face the energy transition with ease.


Mining companies require secure communications, efficient asset performance management, and dependable, innovative technology to protect their critical assets. GE Vernova offers a broad product portfolio to help you through each step of the mining process – safely and reliably.

Digital Energy Protection & Control Distribution Automation Multilin Voltage Regulator Controller
Related Links
  Capacitor Bank Controller
  Field RTU
  Substation Gateways & RTUs
  Distribution Feeder
  Distribution Automation Solutions
  Support Documents
Multilin Voltage Regulator Controller - Legacy
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Manufacturing for this product has been discontinued. As an alternative, please refer to KVGC.

The Multilin DGCV Voltage Regulator Controller enables a utility to optimize operational planning, enables short and long-term load for forecasting, and asset tracking through Power Quality monitoring. This is accomplished through the monitoring of feeder voltages and issuing Raise/Lower commands to a connected Voltage Regulator to increase or decrease the downstream voltage, when required.

Key Benefits

Increases grid efficiency

Through deployment of the Volt/VAR system, the Multilin Voltage Regulator Controller:
- Enables up to a 6% reduction in energy demand
- Improves load management and power quality

Enhances and optimizes asset utilization

Lowers operational costs

Performs real-time control from remote or local locations


Integrates with industry leading voltage regulator manufacturers

Rugged construction for use in harsh environments (-40°C to +60°C)

Reduces time associated with setup and commissioning

Local Raise/Lower control

Advanced logic engine using FlexLogic™

Common platform with other Multilin Distribution Automation (DA) controllers


Regulator control for pole-top or pad mounted voltage regulators for Distribution and Industrial feeders

Integrated into centralized or decentralized Volt/VAR systems


Ideal for medium and small size Distribution transformers with On-Load Tap Changer (OLTC)

Voltage regulationAutomationMetering & monitoringCommunicationsSoftware

  Key Features

Auto/Manual or Local/Remote control

Adjustable Voltage Bandwidth

Configurable Voltage ratio correction

Tap change time delay

Voltage runback limits

3 stage Voltage reduction

Line Drop Compensation
(forward & reverse)

Reverse Power Operation & Override

Tap change inhibits


Tap position limits

Sequential and non-sequential type

Bi-directional mode of operation

Drag hands operation

3 setting groups

Volt/Var Block Diagram
Volt/VAR control
Voltage regulator controllers and Capacitor bank controllers can operate as part of an integrated Volt/VAR Control (IVVC) scheme or as a Centralized Volt/VAR control (CVVC) system. The IVVC or CVVC system works to achieve two key objectives:

Optimize Voltage - through ‘Conservation of Voltage’ that leads to reduced demand, that may result in decreased generation up to 6%.

Increased efficiency- through improved power factor and reduced VAR which helps to reduce power line losses.

Voltage regulator control

Robust Design
Based on GE’s proven controller platform with tens of thousands of units installed globally, the Multilin Voltage Regulator Controller underwent extensive Accelerated Life Testing (ALT) and Highly Accelerated Life Testing (HALT) to validate accurate functionality under specified conditions and to ensure accurate performance in extreme operating conditions and harsh environments.

Mode of Operation
To provide optimal application flexibility, the Multilin Voltage Regulator Controller offers two modes or methods of operation in which the device can be implemented to control the voltage regulator: a) Manual Mode (Local Control or Remote Control). b) Automatic Mode

Manual Mode – Local Control
In this mode, it is possible to Raise or Lower the tap locally from the Push buttons that are available on the front panel of the Multilin Voltage Regulator Controller. For added operational reliability and operator safety, inhibit functions configured in the unit continue to operate as defined.

Manual Mode – Remote Control
In this mode, the commands for Tap Raise and Lower are received from SCADA or the Integrated Volt/VAR systems via communications. This communications channel can be provided via optional radio or cellular communications.

Automatic Mode
In automatic mode, the Multilin Voltage Regulator Controller compares the measured voltage to the set voltage level, and if the difference exceeds the set bandwidth (voltage limits), the Multilin Voltage Regulator Controller issues a Raise or Lower tap commands to maintain the desired voltage levels.

Key Features to Optimize Voltage Regulation:

Voltage Level (Bandcenter)

Voltage Bandwidth

Voltage Reduction

Computation Time Delay

Line Drop Compensation (LDC)

Reverse Power LDC

Reverse Power

Reverse Power Override

Voltage Runback Limits

Inhibit Operations

Overcurrent Inhibit

Overvoltage Inhibit

Under-Voltage Inhibit

  Key Features

Multiple setpoint groups

Expandable inputs and outputs for advanced applications

Customized automation schemes using FlexLogic™

The Multilin Voltage Regulator Controller offers powerful I/O and programmable logic (FlexLogic™) options for advanced automation control, reducing the need and costs associated with additional programmable controllers or discrete control devices.

Set point group control
The Multilin Voltage Regulator Controller has three identical set point groups. The activation of the group can be done either from the HMI or via a Digital Input.

Virtual Inputs and Outputs
The Multilin Voltage Regulator Controller provides 32 virtual inputs and 32 virtual outputs that provide users the ability to send commands to the device. The Multilin Voltage Regulator Controller can accept commands from SCADA, through the front HMI, or front USB port to issue commands such as Raise or Lower tap position.

Command Setting
The Multilin Voltage Regulator Controller has the ability to force commands from the menu structure. This can also be achieved via the EnerVista software that runs on a PC. This simulation ensures that the Raise and Lower commands can be safely issued from a distance without using the HMI.

Drag-Hands Reset
The Drag – Hand Reset provides the ability to reset the Drag hands to the current tap position. Commands can be sent to the Multilin Voltage Regulator Controller to reset the Drag Hand position from the front HMI , from SCADA or through the front panel USB communications.

FlexLogic in the Multilin Voltage Regulator Controller, provides the ability to create customized control schemes. This minimizes the need and costs associated with auxiliary components and wiring.
EnerVista DA Setup - FlexLogic customized control schemes
  Key Features

Metering - current, voltage, power, frequency, PF, Harmonics

Event Recorder - Up to 256 time tagged events

Enhanced system diagnostics & reporting


Metering & monitoring
The Multilin Voltage Regulator Controller provides high accuracy metering and recording of AC signals. The following are the parameters that are metered by the Multilin Voltage Regulator Controller

Phase-Ground Voltages (kV)

Phase to phase Voltages (kV)

Line Voltage (kV)

Phase A, B, and C currents (A)

Line Current (A)

Ground Current (A)

3-Phase Active power (KW)

3-Phase Reactive power (KVar)

3-Phase Apparent Power

Power Factor (Lag or Lead)

2nd to 8th harmonic up to 20% – for current

2nd to 8th harmonic up to 20% – for voltage

THD in 20% – for current

THD in 20% – for voltage

These metering data can be easily integrated with a customers’ database and can also be easily viewed in their SCADA or DMS system.
Event recorder
To significantly reduce time and enable more effective disturbance, post fault analysis and troubleshooting, the Multilin Voltage Regulator Controller provides an integrated event recorder and detailed diagnostic features.

Data Management and Diagnostics
The advanced disturbance diagnostic features included in the Multilin Voltage Regulator Controller includes recording functions through an enhanced Data Logger with 10 channel RMS recorder, statistics & counters.

Statistics & Counters
Multilin Voltage Regulator Controller includes two tap changer counters which records the following information:



The MIN/MAX TAP in the Multilin Voltage Regulator Controller provides information on the lowest (minimum), and the highest (maximum) tap position the tap changer reached during one 24 hour day period.

Advanced Device Health Diagnostics
A comprehensive device health diagnostic test is performed by the Multilin Voltage Regulator Controller during startup and continuously at runtime to test its own major functions and critical hardware. These diagnostic tests monitor for conditions that could impact the Multilin Voltage Regulator Controller’s performance, evaluate the criticality of this impact and present device status via SCADA communications and front panel display.
Metered values and Event Recording
  Key Features    

Networking Interface
- Two Wire RS485
- Multiple Protocols (Modbus®, DNP3.0)
- Optional wireless communications
(radio or cellular)



User Interface
- Front panel USB port
- 4 line HMI Display
- 18 System status LED’s
- 6 quick setting keys

  Front panel
Front panel layout
Front panel quick keys provides direct access to key individual setting parameters
Front panel quick keys layout
  Key Features

4-Level device security to maintain authorized access only

Simplified device configuration software tool and industry leading suite of software tools to manage and maintain Multilin devices.


The Multilin Voltage Regulator Controller and associated software tools provide a suite of security features that ensure only approved personnel can make changes to the device configuration or execute operational commands.

Password Security
The Multilin Voltage Regulator Controller offers multiple levels of password security to limit access control based on settings or command levels. There are four levels of password security provided:

Local Settings Access

Local Control Access

Remote Settings Access

Remote Control Access

Local Access refers to users making changes using the front USB serial port and the HMI. Remote Access refers to users making changes using the rear RS485 port.
Enervista Software
The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the Multilin Voltage Regulator Controller. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the controller, and integrate information measured by the Multilin Voltage Regulator Controller into SCADA or the DMS monitoring systems. The ability to easily view sequence of events is an integral part of the setup software, as postmortem event analysis is critical to proper system operation. Learn More
Setting file property, Main regulation settings, and Voltage reduction settings screens