Voltages and voltage networks are classified according to their voltage values. The lowest voltages are designated as low voltage
. These are voltages up to 1 kV(AC) and 1.5 kV(DC). The next higher voltage range is that of medium voltages.
Medium voltages or medium voltage networks are electricity networks that distribute voltages between 3 kV and 30 kV, although it should be noted that the threshold values for the voltages are fluid. Thus, other values may well be specified in other documentation. Medium-voltage networks are mainly used in towns and districts. The next higher voltage level above medium voltage is that of high voltage, above which are the maximum voltages, which can be between 220 kV and 1.15 MV. .