2007-03-15 11:24:34 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
There are a couple of constants to remember in terms of RMS voltage. RMS voltage is always peak voltage times .707. This, of course, assumes it is single phase.
(volts RMS) = .707 * (voltage peak)
To get peak from the RMS, we take the inverse of .707, which is roughly 1.4144, then we multiply it by our RMS value.
(volts peak) = 1.4144 * (volts RMS)
volts peak = 1.4144 * 408 volts RMS
Your answer is approximately 577 volts peak
2007-03-15 11:46:24 · answer #1 · answered by Eric W 2 · 0⤊ 0⤋
The peak value of a given RMS voltage is waveform dependent. For example, two of the most frequent cases:
(1) Vpeak = Vrms = 480, for a DC voltage.
(2) Vpeak = Vrms * sqrt(2) = 678.8, for a CW sinusoidal wave with ZERO MEAN voltage. If the mean of the sinusoidal waveform is not zero or if its phase is not continuous the 678.8 answer is wrong.
2007-03-15 13:19:43 · answer #2 · answered by sciquest 4 · 0⤊ 0⤋
what is the peak voltage of a 277 V RMS AC voltage ?
2016-12-03 07:37:06 · answer #3 · answered by terry 1 · 0⤊ 0⤋
rms root mean squared.
sqrt(2) times 480 is the peak then ( if it is a single phase voltage )
go look here :
http://www.ece.unb.ca/tervo/ee2791/vrms.htm
2007-03-15 11:28:19 · answer #4 · answered by gjmb1960 7 · 1⤊ 1⤋
Panel voltage of480 volts, 3-section is all suited for 460 volts autos. The voltage will frequently decrease to 460 volts whilst many.autos are working. autos can function +/- 10% of their nameplate score.
2016-12-18 14:40:05 · answer #5 · answered by ? 4 · 0⤊ 0⤋
480*√2 = 678.8V
Doug
2007-03-15 11:47:18 · answer #6 · answered by doug_donaghue 7 · 0⤊ 1⤋
480*1.414
2007-03-15 11:46:50 · answer #7 · answered by JAMES 4 · 0⤊ 0⤋
Assuming it is a sine wave...
Vpeak = 1.414 * Vrms
Any other waveform and the formula is different.
.
2007-03-15 11:46:39 · answer #8 · answered by tlbs101 7 · 0⤊ 0⤋
339.4
2007-03-15 12:26:20 · answer #9 · answered by Paul M 1 · 0⤊ 2⤋