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实际的电缆产品的结构尺寸不可能做到完全不变,例如挤塑绝缘外径通常与额定值相比,会有较大的尺寸变化,从而电缆的性能也改变了,下面就讨论这一问题。(一)尺寸公差引起的电性能变化:1.计算公式:如果同轴电缆内导体外径,外导体内径,介电常数,介质损耗
The actual size of the cable product can not be made completely unchanged. For example, the outer diameter of an extruded insulation usually has a larger dimensional change than the rated value, so that the cable performance is also changed. This problem is discussed below . (A) dimensional tolerance caused by changes in electrical properties: 1. Calculation formula: If the coaxial cable conductor diameter, the outer conductor diameter, dielectric constant, dielectric loss