International Electrotechnical Commission

differences of potential normally existing between conductors and between conductors and earth as follows:

a) Extra-low voltage: not exceeding 50 V a.c. or 120 V ripple-free d.c.

b) Low voltage: exceeding upper limits of extra-low voltage, but not exceeding 1 000 V a.c. or 1 500 V d.c.

c) High voltage: exceeding upper limits of low voltage

TC/SC:82Terms     Info     Publications
Published in:IEC 62257-7-3, ed. 1.0 (2008-04) Terms     Info
Reference number:3.21

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