기사실기 전압강하 공식

작성자 손수호 · 작성일 · 분류 기사실기

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전기기사 실기 기출문제집 2021년 2쇄
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3 / 전압강하 공식
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이재현

3상 전압강하 공식에서 X가 L성분이라
하면, X에는 j*X, 무효전류에는 j성분을 고려한 회로의 실제 무효전류를 대입하고 풀이하는 것이 맞는지 궁금합니다.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

답변 1개

운영교수 ·

안녕하세요, 답변드립니다.

저항과 리액턴스에 흐르는 전류는 동일합니다. (직렬에서는 각 소자에 동일한 전류가 흐름)
따라서, I에 전류의 크깃값을 대입해주시고, R, X에 각각 저항과 리액턴스의 크깃값을 대입해주시면 됩니다.

*참고영상(전압강하 유도과정)