JPH04128U

JPH04128U -

Info

Publication number: JPH04128U
Application number: JP3755990U
Authority: JP
Priority date: 1990-04-06
Filing date: 1990-04-06
Publication date: 1992-01-06
Anticipated expiration: 2004-11-14
Also published as: JPH0644261Y2

Description

[Brief explanation of the drawing]

第１図ないし第７図は本考案の一実施例を示す
もので、第１図はバスダクトの横断面図、第２図
は第１図のＡ−Ａ線断面図、第３図は蓋の背面図
、第４図は第３図のＢ−Ｂ線断面図、第５図は検
電碍子の等価回路図、第６図は蓋の他の実施例を
示す断面図、第７図は開放検知器の結線の一例を
示す説明図、第８図は配電用変電所全体を示す単
線結線図、第９図は従来のバスダクトの点検孔の
蓋を示す断面図である。１_１，１_２，１_３……変圧器、２_１，２_２〜２
_１１……バスダクト、３_１，３_２，３_３……閉鎖
配電盤、４，４_ａ，４_ｂ，４_ｃ……電路導体、５
……絶縁碍子、６……点検孔、７……点検孔の蓋
、８……蝶番、９……ロツク機構、１０……ハン
ドル、１２……アーム、１３……ロツド、１４…
…ハンドル回転停止用溝、１５……ストツパ軸、
１６……ソレノイド、１７……可動片、１８，１
８_１……開放検知器、１９……軸、２０……ガイ
ド、２１……振れ止め、２２……検電碍子、２４
……窓、２５……充電警告器、２６……発光素子
、２７……スイツチノブ、２８……継手部、２９
……ボルト、３０……ナツト、３１……カバー、
３２……出力端子、３３_１，３３_２，３３_３……
接地器、３４_１，３４_２……線路、３５……配電
線、３６_１，３６_３，３７_１，３７_２，３７_３，
３８_１，３８_２，３９_１，３９_２，３９_３……開
閉器、４１……励磁コイル、４２……操作スイツ
チ、４３_１，４３_３……遮断器、４５_１，４５_３……接地機構、４６……係合片、４７……回転体
、４８_１，４８_２，４９_１〜４９_６……手動開閉
器、５１……ボルト、５２……ナツト。 Figures 1 to 7 show one embodiment of the present invention. Figure 1 is a cross-sectional view of a bus duct, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, and Figure 3 is a cross-sectional view of a lid. Rear view, Figure 4 is a sectional view taken along the line B-B in Figure 3, Figure 5 is an equivalent circuit diagram of the voltage insulator, Figure 6 is a sectional view showing another embodiment of the lid, and Figure 7 is an open view. FIG. 8 is an explanatory diagram showing an example of the wiring of the detector, FIG. 8 is a single line diagram showing the entire distribution substation, and FIG. 9 is a sectional view showing the cover of the inspection hole of a conventional bus duct. 1 ₁ , 1 ₂ , 1 ₃ ... transformer, 2 ₁ , 2 ₂ ~ 2
₁₁ ... Bus duct, 3 ₁ , 3 ₂ , 3 ₃ ... Closed switchboard, 4, 4 _a , 4 _b , 4 _c ... Electric circuit conductor, 5
... Insulator, 6 ... Inspection hole, 7 ... Inspection hole cover, 8 ... Hinge, 9 ... Lock mechanism, 10 ... Handle, 12 ... Arm, 13 ... Rod, 14 ...
...Handle rotation stop groove, 15...Stopper shaft,
16...Solenoid, 17...Movable piece, 18,1
8 ₁ ... Open detector, 19... Shaft, 20... Guide, 21... Steady rest, 22... Voltage insulator, 24
... Window, 25 ... Charge warning device, 26 ... Light emitting element, 27 ... Switch knob, 28 ... Joint part, 29
...Bolt, 30...Natsuto, 31...Cover,
32...Output terminal, 33 ₁ , 33 ₂ , 33 ₃ ...
Earther, 34 ₁ , 34 ₂ ... Line, 35 ... Distribution line, 36 ₁ , 36 ₃ , 37 ₁ , 37 ₂ , 37 ₃ ,
38 ₁ , 38 ₂ , 39 ₁ , 39 ₂ , 39 ₃ ... Switch, 41 ... Excitation coil, 42 ... Operation switch, 43 ₁ , 43 ₃ ... Circuit breaker, 45 ₁ , 45 ₃ ... Earthing mechanism, 46 ... Engagement piece, 47 ... Rotating body, 48 ₁ , 48 ₂ , 49 ₁ to 49 ₆ ... Manual switch, 51 ... Bolt, 52 ... Nut.

Claims

[Claims for Utility Model Registration] (1) In a device in which an inspection hole provided for inspecting a bus duct that houses a power distribution circuit conductor is provided with a lid that can be opened and closed, a locking mechanism for locking the lid is provided. At least one of the plurality of insulators provided and supporting the electric circuit conductor housed in the bus duct is supported by a voltage detection insulator for extracting a small voltage from the electric circuit conductor, and the small voltage of the voltage detection insulator is A safety device for a bus duct inspection hole, characterized in that an output is coupled to the lock mechanism. (2) The safety device for a bus duct inspection hole according to claim (1), further comprising a circuit breaker that detects opening and closing of the lid and leads to the circuit conductor, and an opening detector that limits the opening and closing of the switch. (3) The safety device for a bus duct inspection hole according to claim (1) or (2), further comprising a charging warning device that detects the charging state of the electrical circuit conductor and emits light.