কত কিলোওয়াটে কত অ্যাম্পিয়ার ?(1 kw = How much ampere ??????? )

 

          কত কিলোওয়াটে কত অ্যাম্পিয়ার??

          1 kw = How much ampere ???????

 

           

Power formula for 3 phase load,

Power,         P=√3VICOS

Here , √3=1.73, cosØ= 0.85, V=415 V

P= 1kw=1000 watts

            So,    I = P/(√3VCOSØ)

                        =1000/(1.73*415*0.85)

                        =1.63 A

            Power formula for Single Phase Load

            Power, P=VICOSØ

                                    Here, V=230V, COSØ=0.85, P=1KW=1000Watts

            So ,   I = P/(VCOSØ)

                        =1000/(230*0.85)

                        =5.11 A

Conclusion:      3phase, 1kw=1.63A,    if motor is 10 kw then I=1.63*10=16.3 A

                           1 Phase, 1 kw=5.11 A,  if motor is 5 kw then I=5.11*5 =25.55 A