is it possible to somehow easily determine the cos phi of a 3-phase motor? is it possible with a true rms voltmeter and ammeter?
Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamQuote:Power factor - cos? is a measure of energy use.
Active, reactive and apparent power can be represented graphically as a right triangle, called the power triangle. This triangle shows that the power factor is the ratio of the active power to the apparent power:
where:
- active power
- apparent (complex) power
With a sinusoidal supply voltage:
AC receivers receive apparent power S from the source and transmit active power P to the outside in the form of thermal or mechanical energy.
Source: "http://pl.wikipedia.org/wiki/Wsp%C3%B3%C5%82czynnik_mocy"
Madrik wrote:The easiest way - to read on the plate ...
Quote:Power factor - cos? is a measure of energy use.
Active, reactive and apparent power can be represented graphically as a right triangle, called the power triangle. This triangle shows that the power factor is the ratio of the active power to the apparent power:
where:
- active power
- apparent (complex) power
With a sinusoidal supply voltage:
AC receivers receive apparent power S from the source and transmit active power P to the outside in the form of thermal or mechanical energy.
Source: "http://pl.wikipedia.org/wiki/Wsp%C3%B3%C5%82czynnik_mocy"
