Question

O vertical bundle spacing conductor spacing O O O horizontal bundle spacing The figure above shows the conductor configuration of three-phase overhead transmission line with each phase bundle consisting of three solid conductors. All conductors have identical radius of 5cm with 25cm spacing. The bundles are horizontally spaced at 13m and vertically spaced at 10m. Assume the GMR for one conductor is r'. Calculate the value of Deg in meters. Use 4 decimal places in your answer.

Answer 1

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Anso R Dg=lom I OF025m oy o t 0.25m than o ok GMR of one conductor = M = rx0:77-88 , r= 5an=0.05 m od o'= 0.7788x0.05 = 0.03894 m Self GMD of each bundle conductor = (*d*d) 3 (d'] = (0-03 814 x025x0,25) = 0.1345112m Dep= (bols >, »D2 )" ( dos, *2 ) a (d'), r )" Der Duftbex = Jigètlo= 16:46 e Des = ((0-134511*13*10) #C0013451|*13*16-4) (0.134s1llo* 16:4) = 2.81395 m . Deq = 8-81395 m)