The Pad-Mounted Transformer is designed for ground-level installation in urban, industrial, or residential areas, ensuring safety, practicality, and aesthetic integration into the environment. With a shielded metal cabinet and a high degree of protection, it provides safe operation even in public-access locations.
Technical Characteristics
- Rated Power: 75 kVA up to 3000 kVA (or as per project).
- Primary Voltage (MV): 15 kV / 25 kV / 34.5 kV.
- Secondary Voltage (LV): 220 V / 380 V / 440 V (or as specified by the customer).
- Frequency: 50 or 60 Hz.
- Applicable Standards: ABNT NBR 5356, NBR 5440, IEC 60076.
- Insulation: Mineral insulating oil or vegetable fluid (K-class).
- Cooling System: ONAN (Oil Natural, Air Natural).
- Thermal Class: F (155 °C) or H (180 °C).
- Protection Degree: IP-54 or higher (shielded cabinet for outdoor installation).
- Cabinet: Metallic, tamper-proof, with anti-corrosion painting (RAL or Munsell upon request).
- Medium Voltage (MV): “Bushing well” type bushings or elbow-type connectors.
- Low Voltage (LV): Busbars or cable terminals.
- Mechanical interlocking between compartments.
- Pressure relief valve.
- Oil thermometer and level indicator.
- External grounding.
Applications
Pad-Mounted Transformers are widely used in locations requiring safety, reliability, and seamless integration with urban or industrial environments. Their main applications include underground distribution networks, residential developments, subdivisions, condominiums, shopping centers, hospitals, schools, commercial centers, corporate buildings, and industries in general.
They are also extensively applied in public and urban areas, since their shielded cabinet ensures protection against unauthorized access and reduces visual impact, making them ideal for places with high pedestrian circulation. In addition, they are recommended for projects that seek low maintenance cost, high reliability, and flexibility in power network expansion.