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REKAM Listrik Tegangan Rendah

Biaya nego dan Aman
Tampilkan postingan dengan label Conductor of electric. Tampilkan semua postingan
Tampilkan postingan dengan label Conductor of electric. Tampilkan semua postingan

Sabtu, 16 Juni 2012

Conductor length


Function of x : y =f(x) WHERE x=1, x=-1. Before : lead voltage V/m, y=0 linear, and dy =Limit integral V/m dx WHERE x=real number.
Power loss in electrical installation :
10 kVA / 500 V / 20 A = I^2 R, R = 25 0hm, x=R= V/m
And, y=x V/m + c
Polar form : V/m sin phase angle(90 deg).
25 V/m, and V active 220 V, so the equation : V = 245 Volt

https://www.tokopedia.com/amp/find/elektronik-murah-jakarta

50 kVA generator was supplying load of 10 kVA induction motor. Suddenly the conductor got burnt after a year. Generator voltage 380 V active / with about NYM 4 x 4 mm2. The conductor should be : NYM 4 x 6 mm2 with total length = 25 m.

Voltage on conductor :
Label = 500 V / 3 cores or 4 cores
Actual voltage when electric motor has 660 V/25 A


1. Third harmony : 660 V
2. Second harmony : 220 V cos phi x 3
3. Capacitance (ohm) on conductor : i ^2 t ( two poinrts ) equals 31x31 x 0'005 as coulomb divided by voltage. Put into ohm per meter to find cable length (6 mm2) from electric motor to electric panel as much as 5 to 7 m.