Siemens DTU3005-B Especificaciones descargar pdf (Pagina 13)

Average Value The average value of a sine wave is zero. This is because the

positive alternation is equal and opposite to the negative

alternation. In some circuits it may be necessary to know the

average value of one alternation. This is equal to the peak

voltage times 0.637. The average value of a distribution system

with 650 volts peak, for example, is 414.05 volts (650 x 0.637).

Effective Value The effective value, also known as RMS (root-mean-square), is

the common method of expressing the value of AC. The

effective value of AC is defined in terms of an equivalent

heating effect when compared to DC. One RMS ampere of

current flowing through a resistance will produce heat at the

same rate as a DC ampere. The effective value is 0.707 times

the peak value. The effective value of a system with 650 volts

peak, for example, is 460 volts (650 x 0.707 = 459.55 volts).

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Siemens DTU3005-B Especificaciones Pagina 13