315 kVA Miniature Substation – Compact, High-Efficiency Power Distribution Solution

The 315 kVA Miniature Substation is a compact, self-contained power distribution system designed to deliver safe, efficient, and reliable energy in demanding environments. This fully integrated unit steps down medium-voltage electricity to low-voltage levels, making it ideal for applications where space, performance, and safety are essential. From urban infrastructure and industrial parks to retail and rural installations, the 315 kVA Miniature Substation ensures consistent power delivery with minimal maintenance.

Engineered for durability, each substation includes a 315 kVA oil-cooled transformer, high-tension (HT) switchgear, and low-voltage (LV) distribution components within a robust, weatherproof steel enclosure. Because every unit is factory-assembled and tested, installation is fast and efficient, saving both time and cost. Furthermore, the substation’s compact footprint makes it a practical choice for projects where space is limited.

In addition, the transformer operates on the ONAN cooling principle (Oil Natural Air Natural), ensuring high efficiency and stable temperature regulation. The enclosure, available in standard avocado green or SANS-approved colors, provides superior corrosion resistance and long-term outdoor protection. As a result, the 315 kVA Miniature Substation maintains performance in both inland and coastal conditions.

🔍 Key Features:

• Transformer Rating: 315 kVA, 11kV/415V, 50Hz, Dyn11 vector group

• Cooling Method: Oil Natural Air Natural (ONAN)

• HT Switchgear: Available in oil, SF6, vacuum, or air-insulated types (ABB, Schneider, Actom)

• LV Compartment: Equipped with MCCB, ammeters, CTs, voltmeter with selector switch, and optional kWh metering

• Protection: Oil gauge, thermometer pocket, rating plate, and optional EFI+CT protection

• Finish: Durable powder-coated enclosure for all-weather use

✅ Benefits:

• Compact Design: Saves space and simplifies installation

• All-in-One Assembly: Prewired and tested for quick commissioning

• Low Maintenance: Quality materials ensure long service life

• Flexible Configuration: Customizable LV and HT options for specific project needs

• Durability: Built to withstand harsh environmental and mechanical conditions

• Efficiency: Optimized for low losses, safety, and reliability

In conclusion, the Retrolex 315 kVA Miniature Substation provides a cost-effective and high-performance solution for medium-voltage power distribution. It combines strength, safety, and versatility, making it the ideal choice for modern electrical infrastructure.