Electrical Radial Feed Pad-mounted Transformer for Solar Power Systems

The fuse wire of this transformer, the multi-station ring load switch and the no load tap changer are all installed in the transformer tank as parts of the transformer, and it is easy to replace the fuse wire or operate the load switch outside the tank to change the operating condition of the transformer.

It's high voltage side is supplied with power by an elbow cable that can be plugged and removed with load. The low voltage outlet bin is installed outside the fuel tank, and the space in the bin can be equipped with protection devices and measuring instruments as required. 

Pearl Electric's radial feed pad-mounted transformer for solar power ystems exemplifies our commitment to innovation and sustainability. By prioritizing efficiency, durability, and compliance, we empower solar developers to achieve reliable, cost-effective energy transition.

Product Parameters

Features of Electrical Radial Feed Pad-mounted  Transformer for Solar Power Systems

Solar-Specific Design: Tailored for solar farms and commercial PV systems, this transformer efficiently steps up inverter output voltage (e.g., 600V AC) to grid distribution levels (e.g., 34.5 kV), minimizing energy losses.

Radial Feed Configuration: Simplified single-source architecture reduces complexity and costs, ideal for solar installations requiring straightforward, unidirectional power flow to the grid.

Compact design: These transformers are compact and space-saving, making them suitable for installations in areas with limited space availability, such as urban environments.

Pad-Mounted Durability: Housed in a weatherproof, tamper-resistant enclosure with corrosion-resistant coatings, ensuring reliability in harsh outdoor environments.

Load Management: Strategically placed to minimize voltage drop over radial feeders, ensuring compliance with voltage regulations.

Advatages of Electrical Radial Feed Pad-mounted Transformer for Solar Power Systems

High Efficiency: >98% efficiency rating to maximize solar energy yield and reduce operational costs.

Versatility: Pad Mounted Transformers are available in different voltage ratings and capacity options to suit various distribution requirements.

Aesthetic integration: Pad Mounted Transformers are designed to blend seamlessly into the surrounding landscape, minimizing visual impact and maintaining the overall aesthetics of the area.

Enhanced safety features: These transformers are equipped with safety measures such as high-temperature alarms, pressure relief devices, and fault protection systems to ensure safe operation and protect against electrical faults.

Reliable performance: Built with high-quality materials and robust construction, these transformers offer reliable and efficient power distribution with minimal losses.

Easy accessibility: The pad-mounted design allows for convenient access to the transformer for maintenance, inspection, and repairs.

Applications of Electrical Radial Feed Pad-mounted Transformer for Solar Power Systems

A radial feed pad-mounted transformer balances cost and functionality in non-critical applications, emphasizing straightforward installation and maintenance. Its design reflects the trade-offs inherent in radial systems, prioritizing efficiency and accessibility while acknowledging reduced redundancy.  Below is a detailed breakdown of its role in solar power areas where this transformer is used :

Utility-scale solar farms: Acts as the central power conversion hub for large solar arrays，simplifies the connection of multiple solar inverters to a single transformer, reducing infrastructure complexity and costs，while designed for transformers rated 1,500kVA–5,000kVA to handle massive power outputs from solar farms.

Commercial/industrial rooftop PV systems: This transfomer integrates solar power into buildings' electrical systems or feeds excess energy to the grid and compact pad-mounted design avoids occupying rooftop space, ideal for urban installations.

Community solar projects: Distributes solar energy from a shared array to multiple end-users (e.g., residential subscribers), the transformer aggregates power from a mid-sized solar array (e.g., 500kW–2MW) and steps up voltage for grid injection and its single-source feed reduces maintenance costs for decentralized energy sharing.

Grid-tied renewable energy plants: Ideal for connecting hybrid solar-storage or solar-wind plants to the grid, combines power from solar panels and other renewables (e.g., wind turbines or batteries) into a single transformer for grid export. Manages fluctuating inputs from variable solar generation, ensuring stable grid compatibility, and 

Rapid fault detection and isolation protect the grid from disruptions caused by renewable generation fluctuations.

FAQs of Electrical Radial Feed Pad-mounted Transformer for Solar Power Systems

1. What is a Radial Feed Pad-mounted  Transformer?

A Radial Feed Pad-Mounted Transformer is a specialized electrical distribution component designed to step down or step up voltage levels in a radial (single-source) power distribution network. It is housed in a ground-level, weatherproof enclosure mounted on a concrete pad, making it safe, accessible, and ideal for outdoor installations.

2. What are typical primary voltage ratings of this transformer?

The Radial Feed Pad-mounted Transformer has a primary (low-voltage) side: 480V, 600V, or 800V. 

3. What are typical secondary voltage ratings of this transformer?

The Radial Feed Pad-mounted Transformer has a secondary secondary (high-voltage) side: 11–34.5kV, depending on grid requirements. Exact ratings align with inverter output and utility interconnection standards.

4. What is the cooling methods used in the transformer?

The Radial Feed Pad-mounted Transformer typically oil-immersed with convection cooling or fans (OA/FA/FOA). 

5. How the Radial Feed Pad-mounted Transformer intergrated with solar systems?

Connects inverters to the grid. Ensure compatibility with inverter output (voltage, harmonics). May require step-up configuration and protective relays for grid synchronization.