The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20 ° C and a 60-Hz resistance of 0.0956 ohm per mile at 50 ° C for the all-aluminum Marigold conductor, which has 61 strands and whose size is 1113 kcmil. Assuming an increase in resistance of 2 % for spiraling, calculate and verify the dc resistance. Then calculate the dc resistance at 50 ° C, and determine the percentage increase due to skin effect.
The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20 ° C and a 60-Hz resistance of 0.0956 ohm per mile at 50 ° C for the all-aluminum Marigold conductor, which has 61 strands and whose size is 1113 kcmil. Assuming an increase in resistance of 2 % for spiraling, calculate and verify the dc resistance. Then calculate the dc resistance at 50 ° C, and determine the percentage increase due to skin effect.
Solution Summary: The author explains the value of dc resistance at 20°C and the percentage increase due to skin effect.
The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at
20
°
C
and a 60-Hz resistance of 0.0956 ohm per mile at
50
°
C
for the all-aluminum Marigold conductor, which has 61 strands and whose size is 1113 kcmil. Assuming an increase in resistance of
2
%
for spiraling, calculate and verify the dc resistance. Then calculate the dc resistance at
50
°
C,
and determine the percentage increase due to skin effect.
4-8 Explain the difference between shunt, com-
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a. as to construction
b. as to electrical properties
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For the following circuit, given VS= 1.5 and IL is 15 mA and VL is 14.25. What is the value of RL, the value of RS, and how much power is disipated in RL?
Chapter 4 Solutions
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