calcul pierderi de tensiune

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circuite monofazate - ΔU%= (2x100)/(γxUf^2)xΣ((Pixl)/S) circuite trifazate - ΔU%= (100)/(γxUl^2)xΣ((Pixl)/S) coloane monofazate - ΔU%= (2x100xKc)/(γxUf^2)xΣ((Pixl)/S) coloane trifazate - ΔU%= (100xKc)/(γxUl^2)xΣ((Pixl)/S) Pi - puterea instalata pe tronson l - lungime tronson S - sectiune conductor Uf - tensiune de faza Ul - tensiune de linie γ - conductivitatea materialului conductorului, Cu=57m/Wmmp, Al=34m/Wmmp kc - coeficientul de cerere tronson material γ Pi [W] Uf [V] Ul [V] coloana trifazat cu 57 60000 100 25 400 400 1 coloana trifazat cu 57 25000 25 10 400 400 2 circuit monofazat cu 57 2500 10 2.5 230 230 1 circuit monofazat cu 57 1500 5 1.5 400 400 2 tip circuit lungime conductor [m] sectiune conductor [mmp]

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Sheet1circuite monofazate - U%= (2x100)/(xUf^2)x((Pixl)/S)circuite trifazate - U%= (100)/(xUl^2)x((Pixl)/S)coloane monofazate - U%= (2x100xKc)/(xUf^2)x((Pixl)/S)coloane trifazate - U%= (100xKc)/(xUl^2)x((Pixl)/S)Pi - puterea instalata pe tronsonl - lungime tronsonS - sectiune conductorUf - tensiune de fazaUl - tensiune de linie - conductivitatea materialului conductorului, Cu=57m/Wmmp, Al=34m/Wmmpkc - coeficientul de cerere

tronsontip circuitmaterialPi [W]lungime conductor [m]sectiune conductor [mmp]Uf [V]Ul [V]KcU% tronson c. monofazatU% tronson c. trifazatU% tronson col. monofazataU% tronson col. TrifazataU% totalcoloanatrifazatcu5760000100254004000.700.000.000.001.841coloanatrifazatcu572500025104004000.600.000.000.000.412circuitmonofazatcu572500102.52302300.660.000.000.001circuitmonofazatcu57150051.54004000.110.000.000.0020.770.000.002.253.03

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