How can we differentiate voltage levels w.r.t Frequencies and current?

[tipu_sultan]

I came across the terms like

LV
HV
ELV
EHV
MV

etc

I need their exact definition how to distinguish them from each others?

 

[Rohitchampion]

LV - low voltage (ac-50–1000 Vrms dc-120–1500 V)
HV - high voltage (ac-> 1000 Vrms dc-> 1500 V)
ELV - extra low voltage (ac-< 50 Vrms dc-< 120 V)
EHV - extra high voltage
dont know what is MV (medium voltage may be)

 

[tipu_sultan]

Yeah!

MV is medium voltage