Voltage Drop - Furutecfurutec.com.my/home/wp-content/uploads/2012/07/standard09.pdf · Voltage Drop...

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 Factor sinØ = R = AC resistance at load current ( Ω/m) R 0 = AC resistance at rated current ( I o) ( Ω/m) α = Temperature coecient of conductor at 20 o C = 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 ecient power transmission media as compared to conventional cable system. Conductor Width (Thickness=6mm) Busduct Rating 20mm 30mm 40mm 45mm 60mm 75mm 110mm 125mm 150mm 175mm 200mm 110mm 125mm 150mm 175mm 200mm 175mm 400A 600A 700A 800A 1000A 1250A 1600A 1800A 2000A 2200A 2500A 3000A 3500A 4000A 4500A 5000A 6300A 195.5 142.9 99.3 88.7 67.3 49.0 35.8 31.3 25.4 22.3 19.0 17.1 15.6 13.0 10.7 8.7 2.2 81.9 54.2 45.2 43.3 33.1 27.3 19.8 16.7 15.4 16.7 13.4 8.9 8.3 6.7 5.6 6.7 7.7 211.9 152.8 109.1 98.7 75.1 56.1 40.9 35.5 29.7 27.8 23.2 19.3 17.7 14.6 12.0 11.0 8.0 0.135 0.149 0.120 0.123 0.117 0.107 0.099 0.098 0.088 0.085 0.082 0.089 0.095 0.090 0.083 0.075 0.024 0.146 0.159 0.131 0.135 0.129 0.120 0.111 0.109 0.100 0.100 0.096 0.099 0.106 0.100 0.093 0.090 0.049 0.147 0.158 0.132 0.137 0.130 0.122 0.113 0.111 0.102 0.104 0.099 0.100 0.107 0.101 0.094 0.093 0.058 0.145 0.156 0.131 0.136 0.129 0.122 0.113 0.110 0.103 0.106 0.100 0.100 0.107 0.101 0.094 0.095 0.065 0.142 0.153 0.129 0.134 0.128 0.121 0.112 0.109 0.102 0.106 0.101 0.099 0.106 0.100 0.093 0.095 0.070 0.139 0.149 0.127 0.132 0.125 0.119 0.111 0.108 0.101 0.106 0.100 0.097 0.104 0.098 0.091 0.095 0.074 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

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Transcript of Voltage Drop - Furutecfurutec.com.my/home/wp-content/uploads/2012/07/standard09.pdf · Voltage Drop...

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