11kV / 33kV Solar Package Substation | Complete PV Substation with Transformer, MV & LV Panels

02-04 2026 | By:

YUGUANG 11kV / 33kV Solar Package Substation is a prefabricated, compact, and fully integrated power distribution solution designed for utility-scale and industrial solar power projects.
It is supplied as a complete unit including step-up transformer, medium voltage (MV) switchgear, and low voltage (LV) panel, ensuring fast installation, high reliability, and simplified project execution.

Compact Sub Stations (CSS)

This solution is widely adopted by EPC contractors, solar developers, and industrial users for grid-connected and captive solar power plants.

yuguang substation

Product Overview

A Solar Package Substation (also known as a Compact or Prefabricated Substation) integrates all major electrical components into a single enclosure or modular structure.
Factory-assembled and tested before delivery, it minimizes on-site work and reduces installation risks.

Typical application:
 Step-up inverter output voltage (0.4kV / 0.69kV) to 11kV or 33kV for grid connection.

Scope of Supply

Each 11kV / 33kV Solar Package Substation can include the following:

Transformer

• Oil-immersed transformer or dry-type (cast resin) transformer

• Optimized for solar duty and frequent load fluctuations

• Low losses and stable temperature rise

• Suitable for outdoor and high ambient environments

Medium Voltage Switchgear

• Rated voltage: 11kV or 33kV

• Load break switch / Vacuum circuit breaker / SF₆ RMU (optional)

• IEC-compliant protection and interlocking

• Ready for utility or industrial grid connection

Low Voltage Panel

• Inverter incoming and outgoing feeders

• ACB / MCCB protection

• Metering and protection relays

• Optional SCADA and communication interfaces

Technical Specifications (Typical)

Specifications can be customized according to project and local grid requirements.

Key Advantages

• Compact design – reduced footprint and optimized layout

• Fast deployment – factory-assembled and tested

• High reliability – proven configuration for solar applications

• Flexible customization – voltage, protection, enclosure, and layout

• Single-source supply – transformer, MV, and LV in one package

Ideal for EPC contractors seeking shorter project schedules and lower total installed cost.

Typical Applications

• Utility-scale solar power plants

• Industrial & refinery solar projects

• Commercial and rooftop PV systems

• Hybrid solar + energy storage systems

• Remote or off-grid solar installations

In refinery and industrial environments, dry-type transformers and higher IP protection levels are commonly selected for enhanced safety.

Standards & Compliance

Designed and manufactured in accordance with international standards:

• IEC 62271 – Medium voltage switchgear

• IEC 60076 – Power transformers

• IEC 61439 – Low voltage switchgear

• Local utility grid codes and project specifications

Customization Options

• Transformer rating and impedance

• MV switchgear configuration

• Protection relays and metering

• Enclosure material and IP rating

• Indoor or outdoor installation

• SCADA and remote monitoring

Looking for a reliable 11kV / 33kV Solar Package Substation for your EPC or solar project?

Contact us today to receive:

• Technical datasheet

• Single-line diagram

• Customized configuration proposal

• Competitive quotation for tender and EPC projects

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