Patent ID: 9576724
Date: 2017-02-21
CPC Classifications: G10K,H01F

Claim:
1. An air core dry type power reactor comprising: upper and lower spider units each comprising a plurality of support arms extending radially outward from a central axis; a plurality of cylindrically shaped layers concentrically positioned about one another and with respect to the central axis, some of the layers being winding layers arranged in spaced-apart relation from one another to provide gaps between some of the winding layers to allow air to flow along and between winding layers, the plurality of layers including an outermost first layer; a sound shield positioned against the outermost first layer comprising (i) a layer of sound absorbing material extending around the outermost first layer, (ii) a layer of sound barrier material also extending around the outermost first layer, and (iii) a plurality of flexible members each positioned between the sound absorbing material and the outermost first layer.