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Compact Line Voltage Regulator (C-LVR)

Fits right in. Stands out when it counts.

As the power system evolves with increasing decentralization, electrification, and renewable integration, distribution networks are encountering new operational challenges. Among the most pressing is maintaining voltage stability across medium-voltage feeders while minimizing infrastructure impact.

Hitachi Energy’s Compact Line Voltage Regulator (C-LVR) is designed to address this need with a familiar yet refined approach. It integrates voltage regulation directly into a standard liquid-filled distribution transformer, enabling localized control without additional equipment or complex redesigns.

C-LVR is built to fit into existing substations and deployment models with minimal disruption — while delivering the voltage stability that makes a difference.

About C-LVR

C-LVR combines a distribution transformer and a line voltage regulator in a single, compact, factory-assembled unit. This integration enables effective voltage regulation at the medium-voltage level without requiring separate components or extended installation footprints.

Designed to be installed like any conventional liquid-filled distribution transformer, C-LVR brings additional control capabilities in a form factor that utilities and grid operators already know and trust.

Key Advantages

Seamless Grid Integration
  • Compact footprint suitable for standard Compact Secondary Substations (CSS)
  • Delivered as a single, ready-to-install unit
  • No need for additional buildings or regulator installations
  • Simplifies engineering and site preparation
Localized Voltage Control
  • Actively manages voltage variations caused by DERs, EV charging, and variable loads
  • Supports voltage regulation at the feeder level
  • Enables better voltage quality and fewer customer disruptions
  • Maintains performance under forward and reverse power flow
Familiar Form, Enhanced Function
  • Built using proven distribution transformer technology
  • Regulator function integrated without altering standard transformer handling
  • Reduces component count and field wiring
  • Designed for long life and operational reliability
Digital-Ready and SCADA-Compatible
  • Supports integration into digital grid control systems
  • Enables real-time monitoring and voltage adjustment
  • Compatible with utility SCADA/ADMS environments
Efficient to Deploy and Operate
  • Reduces on-site work and installation time
  • Minimizes civil infrastructure requirements
  • Streamlines maintenance through simplified architecture
  • Helps manage cost and deployment speed without compromising grid performance

Application Areas

C-LVR is ideal for grid environments that require voltage stability, spatial efficiency, and rapid deployment.
Medium-voltage feeders in urban, rural, and suburban distribution networks
Retrofit projects seeking to enhance voltage control without major redesigns
Networks with growing distributed energy resource (DER) penetration
Utility standardization programs across asset fleets
Substations with physical space constraints

Who is C-LVR for?

Distribution System Operators (DSOs)
Achieve localized voltage regulation without major structural changes or added complexity.
Utilities
Improve voltage quality and hosting capacity while maintaining system familiarity and ease of use.
EPCs and Integrators
Simplify projects with a ready-to-install solution that reduces integration steps.
Grid Engineers and Technical Planners
Adopt a streamlined solution that provides control where it's needed, without new learning curves or infrastructure demands.

It fits right in. And it stands out when it counts.

The Compact Line Voltage Regulator (C-LVR) from Hitachi Energy brings together voltage regulation and power transformation in a design that utilities already understand — and can trust to deliver.

It installs easily, operates reliably, and makes an immediate difference in voltage control without disrupting the grid environment around it.