Formula of circulating coefficient actual value calculated according to fan actual performance and characteristic dimension is discussed. 探讨了依据通风机实际性能和特性尺寸计算环流系数实际值的公式。
When the sheaths are bonded at both ends, the eddy current losses in sheath will increase with the increase of the distance of cables. 当电缆金属套双端接地时，由于每相金属套间产生的电磁感应电势不相等，金属套中将产生环流损耗，此部分损耗甚至比电缆导体交流损耗还要大。
