Lub cev muaj zog P = 220KW
Lub cev muaj zog input voltage U = 380V
Peb-theem fais fab mov fais fab suav mis P = 1.732 * U * I * cosa
Qhov tseem ceeb ntawm U thiab kuv yog siv tau

Feem ntau thaum lub cev muaj zog pib, cosa = 0.8 nruab nrab tam sim no ib theem IT(AV) = 0.9 * I
Qhov nruab nrab advection IT1(AV) rau txhua yam = 0.45 * I

Qhov pib tam sim no raug txwv rau 4 npaug ntawm tus nqi ntsuas
Ntaus hluav taws xob xaiv txoj cai VDRM / VRRM = (2-3) * 1.414 * U