Numerical - Total charging current per phase for given parameters

Q.  What is the total charging current per phase for a 33 kV, 50 Hz, 3 phase underground cable of 4 km length using 3 single core cables?  Each conductor has a diameter of 2.5 cm and the radial thickness of insulation is 0.5 cm.
- Published on 18 Dec 15

a. 15.28 A
b. 11.87 A
c. 13.85 A
d. 8.25 A

ANSWER: 11.87 A

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    Discussion

  • Mohamed    -Posted on 06 Mar 21
    Engineering
  • Hardik Gosai   -Posted on 12 Oct 18
    permitivity e is not given.
    if e=3 then answer is=11.87A.
    FORMULA=e*length/41.4*log(D/d)
    where,D=inner diameter of sheath
    d=conductor diameter.

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