JPS5913004U

JPS5913004U - Grounding device for maintenance and inspection of closed switchboards

Info

Publication number: JPS5913004U
Application number: JP10795982U
Authority: JP
Inventors: 清瀬　三郎
Original assignee: 富士電機株式会社
Priority date: 1982-07-16
Filing date: 1982-07-16
Publication date: 1984-01-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は被接地部を接地する場合の在来の方法の概略結
線図、第２図及び第３図は通常の開閉器の配置された配
電盤の列盤を示す結線図と開閉器の配電盤内に配置を示
す概略図、第４図、第５図はそれぞれ母線を接地する場
合と負荷ケーブルを接地する場合に本考案の接地装置を
使用する場合の概略結線図、第６図、第７図はそれぞれ
第４図、第５図に対応する配電盤内の接地装置の構成並
び　　　　゛に配置を示す概略図を表わす。３．３０１・・・接続用固定接触子、４・・・母線、６
・・・負荷ケーブル、７．１６・・・接地装置、８゜８
０１・・・接続用接触子、９・・・接地開閉器、１０・
・・検電器、１１・・・接地線、１２・・・接地用接触
子、１３・・・接地用固定接触子、１４・・・制御回路
接触子、１５・・・制御回路固定接触子、１８・・・接
地線、１９・・・接地母線、２０・・・閉鎖配電盤、２
２・・・接地装置操作機構、２４．２６・・・機械的連
動カバー、２５・・・連結棒、２７・・・補助接点、２
９・・・接地装置引出機構。Figure 1 is a schematic wiring diagram of the conventional method for grounding a grounded part, and Figures 2 and 3 are wiring diagrams showing the rows of switchboards in which regular switches are installed, and the switchboard switchboard. Figures 4 and 5 are schematic diagrams showing the arrangement, and Figures 6 and 7 are schematic connection diagrams when the grounding device of the present invention is used for grounding the bus bar and for grounding the load cable, respectively. The figures represent schematic diagrams showing the configuration and arrangement of the grounding device in the switchboard corresponding to FIGS. 4 and 5, respectively. 3.301... Fixed contact for connection, 4... Bus bar, 6
...Load cable, 7.16...Grounding device, 8゜8
01... Connection contact, 9... Earthing switch, 10...
... Voltage detector, 11... Grounding wire, 12... Grounding contact, 13... Grounding fixed contact, 14... Control circuit contact, 15... Control circuit fixed contact, 18...Grounding wire, 19...Grounding busbar, 20...Closed switchboard, 2
2... Earthing device operation mechanism, 24. 26... Mechanical interlocking cover, 25... Connecting rod, 27... Auxiliary contact, 2
9... Earthing device pull-out mechanism.

Claims

[Scope of utility model registration request]

In a grounding device for a busbar or cable of a closed switchboard for safely performing maintenance and inspection, a contact element that engages with a fixed contact element for connection provided on the grounded part 1. A contact that engages with a fixed grounding contact provided in the grounding section of the distribution board, and a control circuit provided in the distribution board to prevent the power supply contactor from being applied to the grounded part while the grounded part is being grounded. It has a contact on the outside that engages with a fixed contact for connection, and has a mechanical interlock that requires an open circuit between the pull-out mechanism and the pull-out mechanism when inserted into the switchboard. A grounding device for maintenance and inspection of a closed switchboard, characterized by incorporating a grounding switch and a voltage detector for detecting the presence or absence of voltage in a grounded part.゛