Question
Download Solution PDFIf the frequency of supply in a three core underground cable is doubled, the charging current will be ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The charging current per phase of a three-core underground cable is given by:
\(I_c={V_{ph}\over X_c}=V_{ph}ω C\)
where, Ic = Charging current
Vph = Phase Voltage
ω = 2πf = Frequency
C = Per phase capacitance
Explanation
From the above expression, the charging current is directly proportional to the frequency.
If the frequency of supply in a three-core underground cable is doubled, the charging current will also be doubled.
Last updated on May 29, 2025
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