Voltage Drop Calculation :

Voltage Drop

V = Line-to-Line Voltage Drop (V/m)I = Load Current (A)I 0 = Rated Current (A)cosØ = Load Power FactorsinØ = R = AC resistance at load current ( Ω/m)R0 = AC resistance at rated current ( Io) (Ω/m)α = Temperature coe!cient of conductor at 20 oC = 3.85 x 10 –3(Copper)X = Reactance ( Ω/m)

1 - cos 2 Ø

Due to low impedance, the voltage drop of busduct system is lower compared to conventional cable system. Therefore,busduct system is a more e!cient power transmission media as compared to conventional cable system.

Conductor Width(Thickness=6mm)

BusductRating

20mm30mm40mm45mm60mm75mm

110mm125mm150mm175mm200mm110mm125mm150mm175mm200mm175mm

400A600A700A800A

1000A1250A1600A1800A2000A2200A2500A3000A3500A4000A4500A5000A6300A

195.5142.999.388.767.349.035.831.325.422.319.017.115.613.010.78.72.2

81.954.245.243.333.127.319.816.715.416.713.48.98.36.75.66.77.7

211.9152.8109.198.775.156.140.935.529.727.823.219.317.714.612.011.08.0

0.1350.1490.1200.1230.1170.1070.0990.0980.0880.0850.0820.0890.0950.0900.0830.0750.024

0.1460.1590.1310.1350.1290.1200.1110.1090.1000.1000.0960.0990.1060.1000.0930.0900.049

0.1470.1580.1320.1370.1300.1220.1130.1110.1020.1040.0990.1000.1070.1010.0940.0930.058

0.1450.1560.1310.1360.1290.1220.1130.1100.1030.1060.1000.1000.1070.1010.0940.0950.065

0.1420.1530.1290.1340.1280.1210.1120.1090.1020.1060.1010.0990.1060.1000.0930.0950.070

0.1390.1490.1270.1320.1250.1190.1110.1080.1010.1060.1000.0970.1040.0980.0910.0950.074

50 Hz

Power factor Ø at 50 Hz

Voltage Drop at Full Load Current

Resistance,R (µΩ/m)

Reactance,X (µΩ/m)

Impedance,Z (µΩ/m) 1.00 0.95 0.90 0.85 0.80 0.75

Voltage Drop