0212 640 90 96

Prefabricated Containerized MV Step-Up Substations

Property Specification

  • Type: Prefabricated Containerized Medium-Voltage Step-Up Power Substation

  • Features: Engineered as an all-in-one, compact power conversion hub, this medium-voltage transformer station is designed for reliable operation across demanding environmental conditions. It combines high-voltage step-up transformation with low-voltage switchgear, a step-up transformer, and medium-voltage switchgear inside a standard 20-foot shipping container envelope. The factory-assembled, plug-and-play unit delivers maximum power density while streamlining transport logistics and significantly accelerating on-site installation and grid interconnection. Its modular interior architecture minimizes maintenance downtime and operational overhead, while all internal electrical components undergo rigorous type-testing to satisfy international safety and operator protection standards.

  • Applications: Utility-scale solar PV power plants, large-scale ground-mounted solar farms, commercial grid-tied generation facilities, and remote renewable energy projects requiring modular, rapid-deploy medium-voltage step-up solutions.

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Description

Technical Parameters

Technical Parameter / Feature 3500 kVA Substation 5000 kVA Substation 7000 kVA Substation
Rated Apparent Power (@ 40°C) 3500 kVA 5000 kVA 7000 kVA
Transformer Configuration Oil-Immersed (ONAN) Oil-Immersed (ONAN) Oil-Immersed (ONAN)
Vector Group / Winding Connection Dy11 Dy11 – y11 Dy11 – y11
Low-Voltage / Medium-Voltage Range 0.8 / 10 – 35 kV 0.8 / 10 – 35 kV 0.8 / 10 – 35 kV
Max Input Current at Rated Voltage 2526 A 2 × 1804 A 2 × 2526 A
Transformer Peak Efficiency ≥99% ≥99% ≥99%
Short-Circuit Impedance 7.0% (±10%) 7.0% (±10%) 8.0% (±10%)
MV Switchgear Voltage / Rated Current 12.0 – 40.5 kV / 630 A 12.0 – 40.5 kV / 630 A 12.0 – 40.5 kV / 630 A
LV Main Air Circuit Breaker (ACB) 3200A / 800Vac / 3P (1 pc) 3200A / 800Vac / 3P (2 pcs) 3200A / 800Vac / 3P (2 pcs)
LV Branch Molded Case Breakers (MCCB) 250A / 800Vac / 3P (14 pcs) 250A / 800Vac / 3P (20 pcs) 250A / 800Vac / 3P (28 pcs)
Surge / Overvoltage Protection AC Type I + II AC Type I + II AC Type I + II
Operating Thermal Envelope -25°C to +55°C (>40°C derating) -25°C to +55°C (>40°C derating) -25°C to +55°C (>40°C derating)
Enclosure Ingress / Corrosion Rating IP54 / C4H (Optional: C5M) IP54 / C4H (Optional: C5M) IP54 / C4H (Optional: C5M)

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