Method for measuring alternating-current resistance of metal sheath of power cable
A metal sheath, AC resistance technology, applied in the direction of measuring resistance/reactance/impedance, parts of electrical measuring instruments, measuring devices, etc. Influence, achieve accurate measurement, wide range of effects
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[0040] The present invention will be explained in more detail in conjunction with accompanying drawings and specific embodiments.
[0041] Using the method proposed by the present invention a measuring cable manufacturing plant YJV62-26 / 35kV-1 × 120mm 2 DC resistance of the cable and the AC resistance at power frequency, an outer diameter of the cable metal sheath is 36.96mm, the outer diameter of the armor is 43.08mm, length 85m test cable, the implementation of the following steps:
[0042] Step 1: custom test fixture:
[0043] according to figure 1The ring-shaped test fixture shown is schematically showing the test fixture. The main body portion of the clamp is made of a metal ring, made of a copper plate having a thickness of 10 mm and a thickness of 2 mm. The two ends of the long copper plate reserve a flat state, and the intermediate portion is processed into a circular arc of 300 °, a radius of R, called a component one. The short copper plate is reserved for 40mm, proces...
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