adidas schuhe gazelle gelb damen|adidas originals gazelle For instance, 11kV can be MV in some systems and HV in another. The International Electrotechnical Commission has classified the voltages into the following levels(IEC 60038). This classification system is fast gaining acceptance. Low Voltage - upto 1000V Medium Voltage - 1000V to 35kV High Voltage - 35kV to 230 kV Subscribe