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High voltage distribution systems consist of switchgear, transformers, cables, containment and accessories. There are two internationally recognized voltage levels (low voltage up to 1000 V a.c. or 1500 V d.c) and high voltage (i.e. voltages above the low voltage range). Commonly, the term high voltage is substituted with medium voltage; however medium voltage simply covers the lower end of the high voltage range i.e. up to 52 kV.
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Liquid immersed transformers most commonly either hermetically sealed or free breathing. With parametric values for length, width, height, arrangement of radiator fins, electrical connections (LV and HV). Includes (pre-set, or user defined) clearance zones to allow for installation and maintenance.
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