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1. (WO2017149849) STATIONARY INDUCTION DEVICE

Pub. No.:    WO/2017/149849    International Application No.:    PCT/JP2016/083952
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Nov 17 00:59:59 CET 2016
IPC: H01F 27/36
H01F 27/32
H01F 30/10
H01F 41/12
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KAINAGA, Soichiro
海永 壮一朗
TSURIMOTO, Takao
釣本 崇夫
Title: STATIONARY INDUCTION DEVICE
Abstract:
A stationary induction device is provided with: an iron core; a first winding and a second winding; and an insulating structure disposed between facing surfaces of the first winding and the second winding. The insulating structure includes: circular cylindrically shaped first insulators (140) positioned between the facing surfaces of the first winding and the second winding with the iron core as a center axis; and a plurality of first insulating spacers (150) disposed between the first winding and the first insulators (140) and between the second winding and the first insulators (140). The first insulators (140) have first nonlinear resistance layers (142) that include nonlinear resistance material having nonlinear volume resistivity that is reduced if the electric field is higher than a threshold value. The first nonlinear resistance layers (142) are at least provided on parts of the first insulators (140) in contact with the first insulating spacers (150).