对于具有同心式线圈部置的心式变压器，线圈导线由于漏磁通的存在而受电磁力

对于具有同心式线圈部置的心式变压器，线圈导线由于漏磁通的存在而受电磁力作用，由于漏磁通主要为轴向漏磁通，线圈要耐受较高的径向力的作用。 线圈导线的电动力随线圈幅向变化，通常靠近主漏磁空道的导线会受到更大的电动力作用，但线圈作为一个整体，这个力会被传到相邻的导线上，因此我们计算线圈短路耐受强度是以平均应力作为设计依据的。线圈短路耐受强度的表征值为线圈导线的屈服极限。同时，由于绝缘材料在干燥处理时会收缩，对耐受压应力的内线圈的机械强度计算时是以自支持方式设计,线圈内撑条,铁芯等对线圈的可能支持作用均不被考虑。在靠近线圈端部，轴向漏磁通将不仅在垂直方向存在，而且也在幅向方向传播。由幅向漏磁通产生的电磁力将使线圈受到轴向压缩或拉伸--即轴向短路力，这个轴向短路力将作用在线圈垫块，线圈端部结构件和铁轭上。 我们应用的短路设计是以短路电流的第一个峰值为依据，设计用短路电流可表示为： Ik=K ×Ist

結果 (中文) 2:

For the core type transformer with concentric coil is provided, the coil wire under the action of electromagnetic force due to the presence of magnetic flux leakage, the leakage flux is mainly axial magnetic flux leakage, the coil to the radial force withstand higher role.Electric power coil wire with coil amplitude changes, usually near the wire main leakage flux path will be subject to force more, but the coil as a whole, lead this force will be passed to the adjacent, so we calculate the coil short-circuit withstand strength is based on the average stress as the design basis.Characterization of coil short-circuit withstand strength values for the yield limit of coil wire.At the same time,Because the insulating materials will shrink in the drying process, calculation of the resistance to compression stress inside the circle of the mechanical strength is designed to support, within the coil on the coil brace, core may support effects are not considered.Near the end of the coil, the axial magnetic flux leakage will not only exists in the vertical direction, but also in the radial direction of propagation.The electromagnetic force generated by the radial magnetic flux leakage will cause the coil is subjected to axial compression or tension - axial short-circuit force, the axial short-circuit force will be the role of the coil block, coil end structures and iron yoke.Short circuit design we use is the first peak short-circuit current basis,Design of the short-circuit current can be expressed as: Ik=K * Ist