This standard specifies the service conditions, rated characteristics, general structural requirements and test methods of the prefabricated assembly of the main electrical functional units of a HV/LV Distribution Substation, duly interconnected, for alternating current of rated operating voltages above 1 kV and up to and including 52 kV on the HV side, service frequency 50 Hz. This standard considers the potential interaction between the individual functions when closely installed and interconnected to form a type tested assembly. This assembly is to be cable-connected to the network.
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