Compact Transformer Substation
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A compact substations transformers is a type of power transformers that is designed to be compact in size and easy to install in small spaces. It combines several elements of an electrical distribution system, including a transformer, a high voltage switchgear, a low voltage switchboard, and other accessories, all housed in a single enclosure. Compact substations are often used in urban areas where space is limited or in remote areas where ease of installation is a primary concern. They are also used in industries, commercial buildings, and residential areas where reliable and continuous power supply is critical. Compact substations are generally available in different voltage and power ratings, and their specific configurations can vary depending on the application requirements.
Compact Transformers Substations Specification
| Distribution system: | TN |
| Transformer: | cast resin |
| Rated voltage transformer (Pn): | 100 – 1250 kVA |
| Connection: | Dyn11 – Class F |
| Earthed neutral-system: | direct |
| Rated voltage LV / MV (Ue1): | 0,4 kV / 24 kV |
| Rated current LV / MV (In1): | depending of the power / 630 A |
| Short-circuit-current (Icc x 1 sec): | 16 kA |
| Power frequency withstand voltage (50/60 Hz, 1 min) (Ud): | 50 kV |
| Rated lighting impulse withstand voltage (Up): | 95 kV |
| Auxiliary circuit voltage: | 24 V DC / 230 V AC |
| Frequency: | 50 Hz |
| Protection class: | IP 55 |
| Ambient temperature: | -20 °C up to +45 °C |
| Relative humidity: | 0 – 90% |
| Altitude: | <1000 m over sea level |
| Cable entries: | bottom |
| Surface treatment: | powder coated, RAL 3020 (red) |
| Dimensions: | up to 20 m³ (customized) |

compact substation transformer features
Space-Efficient Design: These transformers are designed to be smaller and more compact compared to standard transformers, making them ideal for use in areas where space is limited, such as urban environments, industrial complexes, or inside buildings.
Integrated Functionality: In a compact substation, the transformer is integrated with other essential substation components, such as switchgear and distribution panels. This integration allows for a streamlined setup that is easier to install and maintain.
Range of Capacities: Compact substation transformers are available in various sizes and capacities, catering to different power requirements. They are often custom-designed to meet specific operational needs.
Cooling Systems: Depending on their size and power rating, these transformers can be equipped with different cooling systems. Smaller units might use natural air cooling, while larger ones might require forced air or liquid cooling systems.
Safety and Reliability: Safety is a paramount concern in the design of compact substation transformers. They often include features like robust insulation, secure enclosures, and protective devices to ensure safe operation.
Durability: Constructed to withstand harsh operational environments, these transformers are made with durable materials and are designed to have a long service life under varying conditions.
Applications: Compact substation transformers are used in a variety of settings, including residential areas, commercial buildings, industrial sites, and in locations where traditional substations are not feasible due to space constraints.
Transformer Case

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