500kVA Miniature Substation – Compact, High-Performance Power Distribution for Demanding Environments

The 500kVA Miniature Substation from Retrolex Transformers is a compact, factory-assembled power solution designed to efficiently step down 11,000V medium-voltage input to 415V low-voltage output, one of our popular choices amongst our clients. Engineered for reliability, safety, and long-term performance, this unit integrates a 500kVA oil-immersed transformer, high-tension (HT) switchgear, and low-voltage (LV) distribution components into a single durable, weather-resistant, fully tested enclosure.

Ideal for residential complexes, factories, shopping centers, hospitals, and mixed-use developments, the 500 kVA Miniature Substation provides stable, uninterrupted power even in space-constrained or high-demand environments. Its compact footprint allows for easy installation in urban infrastructure, industrial zones, and retrofitted sites where space is limited but reliability cannot be compromised.

The Retrolex 500kVA Miniature Substation delivers dependable, efficient, and flexible power distribution, making it ideal for both commercial and industrial applications requiring safe and continuous energy supply.

Key Features:

• Transformer Rating: 500 kVA, 11,000V/415V, 50Hz, Dyn11 vector group

• Cooling Method: ONAN (Oil Natural Air Natural)

• Construction: Welded cover, aluminum windings, epoxy-coated enclosure

• HT Switchgear: Oil/SF6/Vacuum/Air insulated; RMU options from ABB, Schneider, or Actom

• LV Compartment: 800A MCCB, 3-phase + neutral busbar, Earth bar, Ammeters with CTs, Voltmeter with selector switch

• Optional: kWh meter, cable feeder MCCBs

• Protection Features: Oil gauge, rating plate, thermometer pocket, optional EFI+CT system

• Enclosure Finish: Avocado green or any SANS-approved color

Benefits:

• Efficient Voltage Step-Down: Seamlessly converts 11kV input to 415V output for three-phase applications

• All-in-One Assembly: Transformer, RMU, and LV panel integrated into a single enclosure

• Rapid Deployment: Factory-tested and preassembled for fast on-site installation

• Space Optimization: Compact design ideal for crowded or restricted installations

• Durable and Weather-Resistant: Built with corrosion-resistant materials for harsh environments

• Low Maintenance: Minimal operational upkeep required

• Enhanced Safety & Compliance: Comprehensive protection features and international standards compliance