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.
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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