Title:
THREE-DIMENSIONAL WOUND CORE TRANSFORMER HIGH-VOLTAGE LEAD STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2018/176868
Kind Code:
A1
Abstract:
Disclosed is a three-dimensional wound core transformer high-voltage lead structure, comprising a three-dimensional wound core (1) formed by three rectangular single frames, and A-phase, B-phase and C-phase windings (2), wherein the three-dimensional wound core comprises three core posts and an upper yoke and a lower yoke, the upper yoke and lower yoke of the three-dimensional wound core are respectively triangular structures, the A-phase, B-phase and C-phase windings are correspondingly arranged on the three core posts, each winding comprises an internal low-voltage winding and an external high-voltage winding, and the A-phase, B-phase and C-phase high-voltage windings are jointly connected via a lead-out line (3) to a tap changer (4); and characterised in that the tap changer is located outside the triangular structure of the upper yoke, and on a vertical extension line at a mid-point between the A-phase and the C-phase windings. The high-voltage lead structure means that the lead length is greatly shortened, few lead clamps are needed, and lead to ground discharge points are significantly reduced, improving the reliability of transformer products.
Inventors:
XU KAIXUAN (CN)
ZHAI LIZHEN (CN)
LIANG QINGNING (CN)
LUO JINGTAO (CN)
ZHOU LIBO (CN)
ZHAI LIZHEN (CN)
LIANG QINGNING (CN)
LUO JINGTAO (CN)
ZHOU LIBO (CN)
Application Number:
PCT/CN2017/112732
Publication Date:
October 04, 2018
Filing Date:
November 24, 2017
Export Citation:
Assignee:
HAIHONG ELECTRIC CO LTD (CN)
International Classes:
H01F27/40; H01F27/29
Foreign References:
| CN204117789U | 2015-01-21 | |||
| CN103081042A | 2013-05-01 | |||
| CN205900276U | 2017-01-18 | |||
| CN203760280U | 2014-08-06 |
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
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