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Metal Prefabricated Substation
The prefabricated substations have been developed for the transformation of 6… 24/0.4 kV medium voltage power for the use of consumers. These units include low and medium voltage switchgear equipment, circuit protection devices, a transformer, as well as all necessary wiring and accessories.

The substation enclosures are manufactured out of 2.0 mm thick, galvanized, sheet metal. They are resistant to ultraviolet light and have a protective surface with powder-coating paint. The design of these substations has the advantage that the enclosure and base can be lifted and transported to its location after prefabrication; however, after the transformer has been installed, consultation with the manufacturer is advised.

Available with one to five chambers; air or SF6 insulation switching (for example, ABB SafeRing; Siemens 8DJ20 and 8DH10, Areva FBX and ZPUE TPM).

Available with up to 1600 A rated current in various configurations and equipped with a choice of fuses and automatic circuit breakers for the outputs. Additional options: areas for metering and billing, sections for providing street lighting, and reactive-power compensation

Power transformers that are rated up to 1000 kVA are available either submerged in oil or in a dry state. In order to prevent environmental damage, the units have an integrated oil collector in the base. The substations are pre-equipped with the necessary cabling for connections to low and medium voltage switching equipment.

The substations are equipped with loops for lifting hooks. The base, enclosure and roof should be lifted separately. The base contains the cabling. On-site installation steps include the preparation of the floor base and the external connections. Each unit includes manuals for installation and use.

The prefabricated substations have been manufactured and tested according to the standards IEC 62271-202. All components contained in the unit conform to these standards.