Modular Substations

Federal Pacific and Line Power engineer custom modular substations for applications where rapid deployment, operational flexibility, or space constraints make a traditional fixed substation impractical. These factory-assembled systems integrate transformers, switchgear, and protection into a single engineered solution built on trailers, skids, or structural bases for temporary, bypass, or emergency power distribution.

Available with primary voltages up to 230 kV and ratings up to 50 MVA, each substation is individually designed to the customer’s specific voltage, capacity, and site requirements.

Technical Overview

⸻ OVERVIEW ⸻

Modular substations are engineered to reduce installation complexity and commissioning time while providing the same level of protection and reliability as permanent infrastructure.

⸻ Applications ⸻

Typical Applications

Modular substations are specified for applications where rapid deployment, portability, or space constraints make traditional fixed substations impractical.

A large, metallic electrical substation structure with multiple cables, transformers, and control panels is installed on a construction site. A utility truck and portable office buildings are visible in the background under a partly cloudy sky.
⸻ CONFIGURATION OPTIONS ⸻

Single Skid Modular Substation

A compact, self-contained substation assembly on a single skid for applications requiring a straightforward deployment footprint. Suitable for smaller capacity requirements and sites with limited space.

⸻ CONFIGURATION OPTIONS ⸻

Multi-Skid Modular Substation

A larger capacity solution using multiple interconnected skids for applications requiring higher power ratings or complex protection and control configurations. Skids are shipped separately and interconnected on-site.

An outdoor electrical substation with large grey metal cabinets, transformers, and high-voltage power lines on a gravel surface under a cloudy sky.
⸻ RATINGS ⸻

Ratings at a Glance

Primary Voltage

Up to 230 kV

Secondary Voltage

Up to 35 kV

Power Rating

Up to 50 MVA

Configuration

Single or multiple skid

Enclosure Options

Galvanized or aluminum for corrosive environments

⸻ RESOURCES ⸻

Documentation and Resources

Access technical specifications and installation manuals for modular substations.

4 Outdoor Substations

Line Power originated the concept of Portable Mining Power substations are custom designed to meet the.

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Modular Substation PDF

Modular substation solutions, available for temporary or permanent use, in single or multiple skid configurations.

Outdoor Substations

Federal Pacific through its sister company Line Power Custom Solutions. offers Portable Electrical Substations.

Portable Substation Equipment Solutions

Federal Pacific Dry-Type Transformer Products Modular Substation. Industrial Control – 50 through 750 VA.

Unit Substations

More than 30 Years Experience Designing & Building Transformers . Advantages of Federal Pacific Unit Substations:.

⸻ Additional RESOURCES ⸻
⸻ SUPPORT ⸻

Lifecycle Support

Federal Pacific supports this product family with engineering consultation and installation guidance to ensure proper system integration and long-term reliability.

Custom Engineering

Application-specific design for unique site requirements, non-standard configurations, and specialized voltage and capacity needs.

⸻ Performance ⸻

Engineered for Performance

Federal Pacific and Line Power modular substations are designed to reduce the time, cost, and complexity of deploying power infrastructure in demanding or space-constrained environments. By delivering factory-assembled, prewired systems that can be commissioned quickly on-site, these solutions support continuous operations during maintenance, emergency response, and infrastructure expansion.

Our direct-to-engineer model allows us to customize every aspect of the substation — from the portability base to the specific protective relaying — ensuring a reliable power solution that is optimized for your exact site requirements and timeframe.

⸻ CONNECT ⸻

Discuss Your Application Requirements

Contact our sales team to identify the right modular substation configuration for your voltage, capacity, and deployment requirements.