good day all, this is a simple question, but i jst cant find the answer to it : if i have a 3 phase line, but i wish to extract a single magnitude THAT IS EQUIVALENT to the 3 phase voltages how to i do that??

i know that there is some formula to do this? but i cant find it??

it is basically an amplitude calculator for all three line phase/line voltages


thanks

 

If the voltages of the 3 phases are identically divided to a level that can be handled by a summer circuit, that would yield a proportional value. (But it will not reveal which one is the weakest nor the strongest phase)
(Like a microphone mixer circuit)
Miguel

 

good day all, this is a simple question, but i jst cant find the answer to it : if i have a 3 phase line, but i wish to extract a single magnitude THAT IS EQUIVALENT to the 3 phase voltages how to i do that??

i know that there is some formula to do this? but i cant find it??

it is basically an amplitude calculator for all three line phase/line voltages


thanks

AVERAGE of:
Potential A times sine (0 degrees)
Potential B times sine (120 degrees)
Potential C times sine (240 degrees)

What do you get?

If life is perfect, zero volts. However, life is seldom perfect.

 

AVERAGE of:
Potential A times sine (0 degrees)
Potential B times sine (120 degrees)
Potential C times sine (240 degrees)

What do you get?

If life is perfect, zero volts. However, life is seldom perfect.

hey, thanks,

but wudnt this mean that the magnitude contributed by the "phase A line" will always be 0, since sine 0 deg is 0...

this means that this wud contribute nothing to the overall magnitude...which is obviously not true

 

The average of any time-harmonic signal is zero, but not true for the products.

Steve

 

add diodes to each phase so you get rectify DC that is something that you can measure for sure . loose a line you will know. simple .