Title:
DISCHARGE GROUNDING PROTECTION DEVICE FOR DRY-TYPE TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2022/242698
Kind Code:
A1
Abstract:
Provided is a discharge grounding protection device for a dry-type transformer (6), comprising six conductive grounding balls (5) and six conductive wiring terminals (4). Both ends of each conductive wiring terminal (4) are provided with mounting holes (41). Three conductive wiring terminals (4) have one end respectively connected and fixed to U, V, and W positions of respective phase coil head wiring ends (1) on a high-voltage side of the transformer (6), and the other end respectively connected and fixed to three conductive grounding ball (5); and the other three conductive wiring terminals (4) have one end respectively connected and fixed to a, b, and c connection positions, on a low-voltage side of the transformer (6), where respective phase post insulators and corresponding copper bars are connected, and the other end respectively connected and fixed to the other three conductive grounding balls (5). The structure is simple and is directly installed on a dry-type transformer, features a convenient grounding operation, and thus can effectively prevent the risk of accidental electric shock during transformer test and maintenance.
Inventors:
REN YULONG (CN)
LEI TAO (CN)
XU ZHIHUA (CN)
CHAI SHUYING (CN)
LI XIAOXIN (CN)
XU GUOJIE (CN)
LIU YANAN (CN)
WANG JINGBAO (CN)
LEI TAO (CN)
XU ZHIHUA (CN)
CHAI SHUYING (CN)
LI XIAOXIN (CN)
XU GUOJIE (CN)
LIU YANAN (CN)
WANG JINGBAO (CN)
Application Number:
PCT/CN2022/093736
Publication Date:
November 24, 2022
Filing Date:
May 19, 2022
Export Citation:
Assignee:
CHINA RAILWAY ELECTRIC IND CO LTD (CN)
International Classes:
H01F27/29
Domestic Patent References:
| WO2018199695A1 | 2018-11-01 |
Foreign References:
| CN214705687U | 2021-11-12 | |||
| CN211980386U | 2020-11-20 | |||
| CN102290202A | 2011-12-21 | |||
| CN205229199U | 2016-05-11 |
Attorney, Agent or Firm:
BAODING CITY YANZHAOHENGTONG TECHNOLOGY (CN)
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