JP3013803B2 - Switchboard - Google Patents
SwitchboardInfo
- Publication number
- JP3013803B2 JP3013803B2 JP9055943A JP5594397A JP3013803B2 JP 3013803 B2 JP3013803 B2 JP 3013803B2 JP 9055943 A JP9055943 A JP 9055943A JP 5594397 A JP5594397 A JP 5594397A JP 3013803 B2 JP3013803 B2 JP 3013803B2
- Authority
- JP
- Japan
- Prior art keywords
- branch
- lightning arrester
- conductive
- switch
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Patch Boards (AREA)
- Distribution Board (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、単相3線式配線路
に介在して負荷を雷サージから保護する避雷器を備えた
分電盤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board provided with a lightning arrester interposed in a single-phase three-wire wiring path to protect a load from lightning surge.
【0002】[0002]
【従来の技術】近年における電気機器の電子化により、
雷サージが配電線に重畳して電気機器のプラグを差し込
んでいるコンセントから侵入すると、コンセントに接続
されている電気機器が壊れることがあった。2. Description of the Related Art In recent years, with the digitization of electric equipment,
When a lightning surge is superimposed on a distribution line and enters from an outlet into which an electrical device is plugged, the electrical device connected to the outlet may be broken.
【0003】このため、コンセントや電灯等に電気を供
給する分岐開閉器を有した分電盤内に避雷器を配設する
ことが行われ、雷サージに起因する過電圧の波高値があ
る値を越えたときに放電して過電圧を制限し、コンセン
トに接続される電気機器が壊れるのを防止している。For this reason, an arrester is installed in a distribution board having a branch switch for supplying electricity to an outlet, an electric light, or the like, and a peak value of an overvoltage caused by a lightning surge exceeds a certain value. When it is discharged, it limits overvoltage and prevents electrical equipment connected to the outlet from being damaged.
【0004】この分電盤の一種としては、2本の電圧極
及び1本の中性極からなる単相三線式配線路に介在する
主幹開閉器に複数の分岐接続部を有した各極毎の3本の
導電バーを接続し、これらの3本の導電バーの幅方向両
側で横並びに並設され、各コンセントや電灯等に電気を
供給する複数の分岐開閉器を3本の導電バーのうちの2
本の導電バーの分岐接続部に接続し、各導電バーにおけ
る主幹開閉器を接続した一端側とは反対の他端側に避雷
器を配設し、この避雷器の電源側の端子と3本の導電バ
ーとを各々リード線を介して電気的に接続するとともに
避雷器の負荷側を接地したものがある。[0004] As one type of the distribution board, each pole having a plurality of branch connection portions in a main switch interposed in a single-phase three-wire wiring line composed of two voltage poles and one neutral pole is provided. Are connected side by side on both sides in the width direction of these three conductive bars, and a plurality of branching switches for supplying electricity to each outlet, electric light and the like are connected to the three conductive bars. My 2
A lightning arrestor is connected to the branch connection part of the conductive bar, and a lightning arrestor is provided at the other end of the conductive bar opposite to the one end to which the main switch is connected. Some bars are electrically connected via lead wires, and the load side of the arrester is grounded.
【0005】[0005]
【発明が解決しようとする課題】上述した分電盤にあっ
ては、各導電バーにおける主幹開閉器を接続した一端側
とは反対の他端側に避雷器を配設しているので、避雷器
を配設するスペースが必要であり、大型化してしまうと
いう問題があった。また、避雷器と3本の導電バーとの
電気的接続を各々リード線により行っているので、避雷
器を各導電バーに電気的に接続する作業が煩わしいとい
う問題があった。In the above-mentioned distribution board, the lightning arrester is provided at the other end of each conductive bar opposite to the one end to which the main switch is connected. There is a problem that a space for arranging them is necessary and the size of the apparatus is increased. In addition, since the electrical connection between the lightning arrester and the three conductive bars is made by respective lead wires, there is a problem that the work of electrically connecting the lightning arrester to each conductive bar is troublesome.
【0006】本発明は、かかる事由に鑑みて成されたも
のであり、その目的とするところは、小型化が図れると
ともに避雷器を各導電バーに電気的に接続する作業が容
易となる分電盤を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a distribution board that can be downsized and that can easily connect an arrester to each conductive bar. Is to provide.
【0007】[0007]
【課題を解決するための手段】上述した課題を解決する
ために、請求項1記載の分電盤は、2本の電圧極及び1
本の中性極からなる単相三線式配線路に介在する主幹開
閉器と、この主幹開閉器の負荷側に接続され、複数の分
岐接続部を各々有した3本の導電バーと、これらの導電
バーの幅方向に配設して各々2本の導電バーの分岐接続
部に電源側が接続される複数の分岐開閉器と、3本の導
電バーに電源側が各々電気的に接続されるとともに負荷
側が接地され、各分岐開閉器の負荷側に接続される負荷
を雷サージから保護する避雷器と、を備えた分電盤にお
いて、前記避雷器は、分岐開閉器に横並びに配設され、
3本の導電バーの各々の分岐接続部に接続された構成と
してある。According to a first aspect of the present invention, there is provided a switchboard comprising two voltage poles and one
A main switch interposed in a single-phase three-wire wiring path composed of three neutral poles, three conductive bars connected to the load side of the main switch and each having a plurality of branch connection portions; A plurality of branch switches arranged in the width direction of the conductive bars and each having a power supply side connected to a branch connection portion of the two conductive bars; and a power supply side electrically connected to each of the three conductive bars and a load. And a lightning arrester that protects a load connected to the load side of each branch switch from a lightning surge, the lightning arrester is arranged side by side on the branch switch,
The configuration is such that the three conductive bars are connected to the respective branch connection portions.
【0008】請求項2記載の分電盤は、請求項1のもの
の避雷器の導電バーにおける延出方向の長さを隣合う2
つの分岐開閉器の導電バーにおける延出方向の長さと略
同一とした構成としてある。According to a second aspect of the present invention, there is provided a distribution board in which the length of the conductive bar of the lightning arrester according to the first aspect in the extending direction is two adjacent.
The configuration is substantially the same as the length of the conductive bar of the two branch switches in the extending direction.
【0009】請求項3記載の分電盤は、請求項2のもの
の3本の導電バーを取着する基板を設け、該基板に分岐
開閉器を取り付ける取付螺子の螺子孔を各導電バーの延
出方向で等間隔に形成するとともに、前記避雷器の隣合
う2つの分岐開閉器を取り付ける螺子孔に対応する位置
に、取付螺子が挿通される挿通孔を形成した構成として
ある。According to a third aspect of the present invention, there is provided a distribution board provided with a substrate on which the three conductive bars of the second aspect are mounted, and a screw hole of a mounting screw for mounting a branch switch on the substrate. The lightning arrester is formed at equal intervals, and an insertion hole through which an attachment screw is inserted is formed at a position corresponding to a screw hole for attaching two adjacent branch switches of the surge arrester.
【0010】請求項4記載の分電盤は、請求項1乃至請
求項3のものの避雷器は、隣合う4つの分岐接続部が挿
通される4つの収納部を有し、該4つの収納部のうちの
3つに分岐接続部が接続される電源側の端子を配設した
構成としてある。According to a fourth aspect of the present invention, there is provided a lightning arrester according to any one of the first to third aspects, wherein the lightning arrester has four storage portions into which four adjacent branch connection portions are inserted. The power supply side terminals to which the branch connection portions are connected are provided in three of them.
【0011】請求項5記載の分電盤は、請求項4のもの
の避雷器の電源側の端子に接続される3つの分岐接続部
のうちの1つは、中性極の導電バーと1本の電圧極の導
電バーとを切り換える切換手段により1本の電圧極の導
電バーに接続された構成としてある。According to a fifth aspect of the present invention, one of the three branch connection portions connected to the power supply side terminal of the lightning arrester according to the fourth aspect includes a neutral pole conductive bar and one of the three branch connection portions. It is configured to be connected to a conductive bar of one voltage electrode by switching means for switching between the conductive bar of the voltage electrode.
【0012】請求項6記載の分電盤は、請求項1乃至請
求項5のものの避雷器は、各分岐開閉器の負荷側に負荷
を接続する負荷線の引出口から一番離れた位置に配設さ
れた構成としてある。According to a sixth aspect of the present invention, the lightning arrestor according to any one of the first to fifth aspects is arranged at a position farthest from an outlet of a load line connecting a load to the load side of each branch switch. There is a configuration provided.
【0013】請求項7記載の分電盤は、請求項1乃至請
求項6のものの避雷器の負荷側の近傍に接地線を接続す
る接地バーを配設した構成としてある。According to a seventh aspect of the present invention, there is provided a power distribution panel having a configuration in which a grounding bar for connecting a grounding wire is provided near the load side of the arrester according to any one of the first to sixth aspects.
【0014】請求項8記載の分電盤は、請求項1乃至請
求項7のものの主幹開閉器、3本の導電バー、分岐開閉
器及び避雷器を収納した一面開口の箱体と、この箱体の
開口を塞ぐとともに、主幹開閉器及び各分岐開閉器の操
作ハンドルを突出する複数の窓孔を有した蓋体とを備
え、前記避雷器に、隣合う2つの窓孔内に臨む状態表示
部を設けた構成としてある。According to an eighth aspect of the present invention, there is provided a switchboard having a single-sided opening housing the main switch, the three conductive bars, the branch switch, and the lightning arrester according to any one of the first to seventh aspects, and this box. And a lid having a plurality of window holes protruding the operation switches of the main switch and each branch switch. The lightning arrester has a state display unit facing two adjacent window holes. It is a configuration provided.
【0015】[0015]
【発明の実施の形態】本発明の実施の形態を図1乃至図
8を参照して説明する。 (実施形態1)この分電盤は、図1及び図2に示すよう
に、一面開口の箱体 1及びこの箱体 1の開口を塞ぐ蓋体
2内に、2本の電圧極及び1本の中性極からなる単相三
線式配線路に介在する主幹開閉器 3と、この主幹開閉器
3の負荷側に接続され、複数の分岐接続部 7,8を有した
3本の導電バー 4,5,6と、これらの導電バー 4,5,6の幅
方向両側に配設して各々2本の導電バー4(5),6の分岐接
続部 7,8に電源側が接続される複数の分岐開閉器 9と、
3本の導電バー 4,5,6に電源側が各々電気的に接続され
るとともに負荷側が接地され、各分岐開閉器 9の負荷側
に接続される負荷を雷サージから保護する避雷器10と、
を収納したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. (Embodiment 1) As shown in FIG. 1 and FIG. 2, this distribution board has a box 1 having
2, a main switch 3 interposed in a single-phase three-wire system consisting of two voltage poles and one neutral pole, and the main switch 3
Three conductive bars 4, 5, 6 having a plurality of branch connection portions 7, 8 connected to the load side of the three, and disposed on both sides in the width direction of these conductive bars 4, 5, 6, respectively. A plurality of branch switches 9 whose power supply side is connected to the branch connection portions 7 and 8 of the two conductive bars 4 (5) and 6;
A lightning arrester 10 for electrically connecting the power supply side to the three conductive bars 4, 5, and 6 and grounding the load side to protect a load connected to the load side of each branch switch 9 from a lightning surge;
Is stored.
【0016】主幹開閉器 3は、漏洩電流が流れたときに
強制開極する漏電遮断器を用いており、単相三線式配線
路の2本の電圧極及び1本の中性極の引き込み線(図示
せず)を電源側の端子11に接続し、この電源側の端子11
と負荷側の端子(図示せず)とをハンドル12により電気
的に開閉操作するものである。The main switch 3 uses an earth leakage breaker that is forcibly opened when a leakage current flows, and is a lead wire for two voltage poles and one neutral pole of a single-phase three-wire system. (Not shown) is connected to the terminal 11 on the power supply side.
A handle 12 electrically opens and closes a terminal (not shown) on the load side.
【0017】導電バー 4,5,6は、主幹開閉器 3の負荷側
に接続される3本の送りバー(図示せず)に個々に接続
され、図3乃至図5に示すように、各分岐開閉器 9及び
避雷器10に接続される複数の分岐接続部 7,8を有してい
る。これらの3本の導電バー4,5,6は、中央を中性極の
導電バー 6とするとともにこの導電バー 6の両側に電圧
極の導電バー 4,5を配設し、さらに中性極の導電バー 6
が図1における紙面手前側となるよう絶縁性の基台13に
載置される。The conductive bars 4, 5, 6 are individually connected to three feed bars (not shown) connected to the load side of the main switch 3, and as shown in FIGS. It has a plurality of branch connection parts 7, 8 connected to the branch switch 9 and the lightning arrester 10. The three conductive bars 4, 5, and 6 have a neutral conductive bar 6 at the center, and voltage conductive bars 4, 5 on both sides of the conductive bar 6. Conductive bars 6
Is placed on the insulating base 13 so as to be on the near side in the drawing in FIG.
【0018】電圧極の2つの導電バー 4,5は、それぞれ
分岐開閉器 9に接続される複数の分岐接続部 7と、他方
の電圧極の導電バー 5,4方向に突出して他方の電圧極の
導電バー 5,4側に配設される分岐開閉器 9に状態に応じ
て電気的に接続される突出片14とを有している。中性極
の導電バー 6は、電圧極の導電バー 4及び導電バー 5側
で分岐接続部 8を接続する接続部15が交互に突出するよ
うに略ジグザグ状に形成され、突出する側に配設した分
岐開閉器 9を分岐接続部 8により接続する。The two conductive bars 4 and 5 of the voltage electrode are respectively connected to a plurality of branch connecting portions 7 connected to the branch switch 9 and the conductive bars 5 and 4 of the other voltage electrode and protrude toward the other voltage electrode. And a protruding piece 14 that is electrically connected to the branch switch 9 disposed on the side of the conductive bars 5 and 4 according to the state. The conductive bar 6 of the neutral electrode is formed in a substantially zigzag shape so that the connecting portions 15 connecting the branch connecting portions 8 alternately protrude on the conductive bar 4 and the conductive bar 5 side of the voltage electrode, and are arranged on the protruding side. The branch switch 9 is connected by the branch connection part 8.
【0019】なお、分岐接続部 8は、電圧極の導電バー
4(5)と中性極の導電バー 6とを切り換える一種の切換手
段8aであり、この分岐接続部8aを中性極の導電バー 6の
接続部15に接続したときには、一方の電圧極の導電バー
4(5)の分岐接続部 7とともに分岐開閉器 9に100Vの電気
を供給し、この分岐接続部8aを電圧極の導電バー5(4)の
突出片14に接続したときには、一方の電圧極の導電バー
4(5)の分岐接続部 7とともに分岐開閉器 9に200Vの電気
を供給するようになっている。(本実施の形態では、分
岐開閉器 9全てが中性極の導電バー 6に電気的に接続さ
れて100Vの電気が供給されるものとしている。) 分岐開閉器 9は、図1乃至図3に示すように、導電バー
4,5,6の幅方向両側に横並びに配設され、各々1本の電
圧極の導電バー4(5)と1本の中性極の導電バー6との分
岐接続部 7,8に電源側の端子16を接続するとともに、負
荷に接続される負荷線17を負荷側の端子18に接続してい
る。この分岐開閉器 9の略中央には電源側の端子16と負
荷側の端子18とを電気的に開閉操作する操作ハンドル19
を有し、電気を負荷線17を介して各負荷に供給したり遮
断したりする。The branch connection part 8 is a conductive bar of the voltage electrode.
4 (5) is a kind of switching means 8a for switching between the neutral pole conductive bar 6 and the branch connection part 8a connected to the connection part 15 of the neutral pole conductive bar 6 when one of the voltage poles is connected. Conductive bar
When 100 V electricity is supplied to the branch switch 9 together with the branch connection 7 of 4 (5), and this branch connection 8a is connected to the protruding piece 14 of the conductive bar 5 (4) of the voltage pole, one of the voltage Conductive bar
200V electricity is supplied to the branch switch 9 together with the branch connection part 7 of 4 (5). (In the present embodiment, it is assumed that all of the branch switches 9 are electrically connected to the conductive bar 6 of the neutral pole and supplied with 100 V electricity.) The branch switches 9 are shown in FIGS. As shown in the conductive bar
4, 5 and 6 are arranged side by side on the both sides in the width direction. Terminal 16 on the load side, and a load line 17 connected to the load is connected to a terminal 18 on the load side. An operation handle 19 for electrically opening and closing the terminal 16 on the power supply side and the terminal 18 on the load side is provided substantially at the center of the branch switch 9.
And supplies or cuts off electricity to each load via the load line 17.
【0020】これらの分岐開閉器 9は、図1乃至図4に
示すように、基台13を取着する基板20に等間隔で形成さ
れた螺子孔 20aに取付螺子21により負荷側が取着される
とともに、1本の電圧極の導電バー4(5)及び1本の中性
極の導電バー 6に各々分岐接続部 7,8を介して電源側の
端子16が接続されることにより取着される。As shown in FIGS. 1 to 4, these branch switches 9 are mounted on the load side by mounting screws 21 in screw holes 20a formed at equal intervals in a substrate 20 on which the base 13 is mounted. And the power supply side terminal 16 is connected to the conductive bar 4 (5) of one voltage electrode and the conductive bar 6 of one neutral electrode via the branch connection parts 7 and 8, respectively. Is done.
【0021】基板20は、その中央部を凹まして基台13の
引掛爪 13aが掛止される引掛孔22を有して基台13を取着
するとともに、両側に形成されたガイド突起 23,23間で
各分岐開閉器 9をスライドさせて各分岐接続部 7,8に接
続し易いようにしている。なお、24,24 は基板20を取着
する一対のフレームで、基板20を各々螺子により取着す
る。The substrate 20 has a hook hole 22 into which the hook 13a of the base 13 is hooked by recessing the central portion thereof, and the base 13 is attached to the base 20, and guide projections 23, formed on both sides. Each branch switch 9 is slid between 23 to facilitate connection to each branch connection part 7,8. Reference numerals 24, 24 denote a pair of frames on which the substrate 20 is attached, and the substrate 20 is attached with screws.
【0022】避雷器10は、図1に示すように、分岐開閉
器 9に横並びに配設され、3本の導電バー 4,5,6の分岐
接続部7,8a,8に接続される電源側の3つの端子25,26,27
と、接地される負荷側の接地線28と、電圧極の導電バー
4 に接続される端子25及び中性極に接続される導電バー
6に接続される端子27間の通電状態を表示する発光素子
LED1(状態表示部)と、電圧極の導電バー 5に接続され
る端子26及び中性極の導電バー 6に接続される端子27間
の通電状態を表示する発光素子LED2(状態表示部)とを
備えており、各分岐開閉器 9の負荷側の端子18に負荷線
17を介して接続される負荷を雷サージから保護する。そ
して、この避雷器10が分岐開閉器 9に横並びに配設され
て導電バー 4,5,6の分岐接続部7,8a,8に直接接続される
ことで、小型化が図れるとともに避雷器10を各導電バー
4,5,6に電気的に接続する作業が容易になる。As shown in FIG. 1, the lightning arrester 10 is arranged side by side on the branch switch 9 and is connected to the branch connection portions 7, 8a, 8 of the three conductive bars 4, 5, 6 on the power supply side. Three terminals 25,26,27
And the ground wire 28 on the load side to be grounded and the conductive bar
4 and the conductive bar connected to the neutral pole
Light-emitting element that indicates the state of conduction between terminals 27 connected to 6
A light emitting element LED2 (status display section) for displaying an energization state between a terminal 26 connected to the conductive bar 5 of the voltage electrode and a terminal 27 connected to the conductive bar 6 of the neutral electrode; The load line is connected to the terminal 18 on the load side of each branch switch 9.
The load connected via 17 is protected from lightning surge. The lightning arresters 10 are arranged side by side on the branch switch 9 and are directly connected to the branch connection portions 7, 8a, 8 of the conductive bars 4, 5, 6, so that the lightning arrester 10 can be downsized. Conductive bar
The work of electrically connecting to 4,5,6 becomes easy.
【0023】この避雷器10の内部は、図8に示すよう
に、各導電バー 4,5,6にヒューズ a,b,cとサージ吸収素
子ZNR3,ZNR5,ZNR4とギャップ Gとを直列に接続するとと
もに、各電圧極 4,5と中性極 6との間に、サージ吸収素
子 ZNR2,ZNR1と発光素子LED2,LED2(状態表示部) とを接
続して構成されており、雷サージが侵入していない通常
の状態では、ヒューズa(b)→発光素子LED2(LED1)→ヒュ
ーズ cという順路で発光素子LED2(LED1)が通電されて発
光素子LED2(LED1)が点灯し、雷サージが侵入すると、ヒ
ューズa(b,c)→サージ吸収素子 ZNR3(ZNR5,ZNR4)→ギャ
ップ Gという順路で放電される。つまり、各極間のサー
ジをサージ吸収素子ZNR2,ZNRで吸収し、ギャップ Gによ
る放電をサージ吸収素子XNR3,ZNR5,ZNR4で停止するよう
にしているのである。As shown in FIG. 8, inside the lightning arrester 10, fuses a, b, c, surge absorbing elements ZNR3, ZNR5, ZNR4 and a gap G are connected in series to the conductive bars 4, 5, and 6, respectively. In addition, a surge absorbing element ZNR2, ZNR1 and a light emitting element LED2, LED2 (status display) are connected between each of the voltage poles 4, 5 and the neutral pole 6. In the normal state, the light-emitting element LED2 (LED1) is energized in the order of fuse a (b) → light-emitting element LED2 (LED1) → fuse c, and the light-emitting element LED2 (LED1) turns on. , And the fuse a (b, c) → surge absorbing element ZNR3 (ZNR5, ZNR4) → gap G is discharged in a forward path. That is, the surge between the poles is absorbed by the surge absorbing elements ZNR2 and ZNR, and the discharge caused by the gap G is stopped by the surge absorbing elements XNR3, ZNR5 and ZNR4.
【0024】なお、この避雷器10の導電バー 4,5,6にお
ける延出方向の長さX1を隣合う2つの分岐開閉器 9,9の
導電バー 4,5,6における延出方向の長さ(2つの分岐開
閉器9,9及びこれらの2つの分岐開閉器 9,9間の隙間の
長さ)Y1と略同一としており、隣合う2つの分岐開閉器
9,9を外し、この位置にそのまま避雷器10を配設するこ
とができ、避雷器10を取り付ける位置を分岐開閉器 9の
配設位置間で可変することができるようになっている。
つまり、本実施の形態では、図1において避雷器10を主
幹開閉器 3側で導電バー 4,5,6に対して下側に配設して
いるが、他の隣合う2つの分岐開閉器 9,9を外してその
位置に配設することもできるのである。The length X1 of the lightning arrester 10 at the conductive bars 4, 5, 6 in the extending direction is the length of the conductive bars 4, 5, 6 of the two adjacent branch switches 9, 9 in the extending direction. (Two branch switches 9,9 and the length of the gap between these two branch switches 9,9) Two branch switches that are substantially the same as Y1 and are adjacent to each other
The lightning arrester 10 can be disposed at this position by removing the lightning arresters 9 and 9, and the mounting position of the lightning arrester 10 can be changed between the positions where the branch switch 9 is disposed.
In other words, in the present embodiment, the lightning arrester 10 is disposed below the conductive bars 4, 5, and 6 on the side of the main switch 3 in FIG. , 9 can be removed and placed in that position.
【0025】また、図1及び図6に示すように、避雷器
10の負荷側には、隣合う2つの分岐開閉器 9.9を取着す
る基板20の螺子孔 20a,20aに対応する位置に、取付螺子
21が挿通される挿通孔 30,30を有しており、隣合う2つ
の分岐開閉器 9,9を外し、この位置で2つの分岐開閉器
9,9を取着する取付螺子21によりそのまま基板20に取着
でき、避雷器10を取着する作業を容易にしている。つま
り、隣合う2つの分岐開閉器 9,9を取り付ける取付螺子
21,21間の長さY2と、避雷器10の挿通孔 30,30間の長さ
X2とを同一としているのである。As shown in FIG. 1 and FIG.
On the load side of 10, mounting screws are provided at positions corresponding to the screw holes 20a, 20a of the board 20 to which the two adjacent branch switches 9.9 are mounted.
It has insertion holes 30, 30 through which 21 is inserted, and removes two adjacent branch switches 9, 9, and at this position, two branch switches
The mounting screws 21 for attaching the lightning arresters 9 and 9 allow the lightning arrester 10 to be easily attached to the substrate 20, thereby facilitating the work for attaching the lightning arrester 10. In other words, mounting screws for attaching two adjacent branch switches 9,9
Length Y2 between 21,21 and insertion hole 30,30 for arrester 10
It is the same as X2.
【0026】また、避雷器10の電源側は、図7に示すよ
うに、隣合う4つの分岐接続部 7,8,7,8が挿通される4
つの収納部 31,32,33,34を有し、この4つの収納部 31,
32,33,34のうちの3つの収納部31,32,34に分岐接続部7,
8a,8が接続される電源側の端子25,26,27を配設している
ので、4つの分岐接続部 7,8,7,8が各収納部 31,32,33,
34に収納されることとなって、電源側の端子25,26,27に
接続されない1つの分岐接続部 7を切断する必要が無く
なるのである。このため、各分岐接続部7,8a,8を避雷器
10に接続する作業が容易になる。As shown in FIG. 7, the power supply side of the lightning arrester 10 has four adjacent branch connection portions 7, 8, 7, 8 inserted therethrough.
It has four storage sections 31, 32, 33, 34, and these four storage sections 31,
Branch storage section 7, 3, storage section 31, 32, 34 of 32, 33, 34
Since terminals 25, 26 and 27 on the power supply side to which 8a and 8 are connected are arranged, four branch connection portions 7, 8, 7 and 8 are stored in each storage portion 31, 32, 33,
As a result, it is not necessary to disconnect one branch connection portion 7 that is not connected to the terminals 25, 26, 27 on the power supply side. Therefore, each branch connection 7, 8a, 8
The work of connecting to 10 becomes easier.
【0027】また、この避雷器10に3本の導電バー 4,
5,6を電気的に接続する3つの分岐接続部7,8a,8のうち
の電源側の端子26に接続される1つの分岐接続部8aは、
この分岐接続部8a自体が切換手段であり、上述した分岐
開閉器 9における100V及び200V切り換えのように、図6
に示す通り、100Vの分岐開閉器 9に接続する本来の分岐
接続部 8であれば中性極の導電バー 6に接続されるので
あるが、この分岐接続部8を略 180度回転させて他方の
導電バー 5に接続することにより、避雷器10自体が2本
の電圧極の導電バー 4,5及び1本の中性極の導電バー 6
に接続されることとなる。従って、避雷器10から一番遠
い導電バー 5の電気的接続を容易に行えるのである。The lightning arrester 10 has three conductive bars 4,
One of the three branch connecting portions 7, 8a, 8 electrically connecting the terminals 5, 6 is connected to the terminal 26 on the power supply side.
This branch connection part 8a itself is a switching means, and as shown in FIG.
As shown in the figure, if the original branch connection 8 is connected to the 100 V branch switch 9, it is connected to the conductive bar 6 of the neutral pole. The lightning arrester 10 itself is connected to the conductive bars 4 and 5 of two voltage poles and the conductive bar 6 of
Will be connected. Therefore, electrical connection of the conductive bar 5 farthest from the lightning arrester 10 can be easily performed.
【0028】また、図1に示すように各分岐開閉器 9の
負荷側の端子18に負荷を接続する負荷線17の引出口1aか
ら一番離れた位置となる、主幹開閉器 3側、かつ、導電
バー4,5,6よりも下側に避雷器10を配設しているので、
各分岐開閉器 9の負荷側の端子18に接続される負荷線17
が避雷器10の負荷側には引き回されないこととなり、現
在配設されている避雷器10が破壊された後に避雷器10を
取り替える作業が容易になるのである。As shown in FIG. 1, the main switch 3 is located farthest from the outlet 1a of the load line 17 connecting the load to the terminal 18 on the load side of each branch switch 9, and Since the lightning arrester 10 is arranged below the conductive bars 4, 5, and 6,
Load wire 17 connected to the load-side terminal 18 of each branch switch 9
Is not routed to the load side of the lightning arrester 10, and the work of replacing the lightning arrester 10 after the currently arranged lightning arrester 10 is destroyed becomes easy.
【0029】また、図1における箱体 1の下側で避雷器
10の負荷側の近傍に接地線28を接続する接地バー35を配
設しているので、避雷器10から接地バー35に接続する接
地線28を短くすることができ、避雷器10が接地バー35に
電気的に接続されているか否か容易に確認できるように
なっている。The lightning arrester is provided below the box 1 in FIG.
Since the ground bar 35 for connecting the ground wire 28 is provided near the load side of the 10, the ground wire 28 connected from the lightning arrester 10 to the ground bar 35 can be shortened, and the lightning arrester 10 is connected to the ground bar 35. It can be easily confirmed whether or not the connection is made electrically.
【0030】また、箱体 1の開口を塞ぐ蓋体 2には、図
1に示すように、主幹開閉器 3のハンドル12や分岐開閉
器 9の操作ハンドル19を突出させる窓孔 36,37が形成さ
れている。この窓孔 36,37のうちの分岐開閉器 9の操作
ハンドル19を突出させる窓孔37は、避雷器10の発光素子
LED1,LED2(状態表示部)が臨むようになっており、蓋
体 2を箱体 1から外さなくても避雷器10の状態が分かる
ようになっている。なお、避雷器10の発光素子 LED1,LE
D2(状態表示部)が臨む2つの窓孔 37,37は、避雷器10
が配設されない場合には分岐開閉器 9の操作ハンドル19
が突出するものであり、各導電バー 4,5,6から避雷器10
を外して2つの分岐開閉器 9,9を配設することもできる
ようになっている。As shown in FIG. 1, the cover 2 closing the opening of the box 1 has window holes 36 and 37 through which the handle 12 of the main switch 3 and the operation handle 19 of the branch switch 9 project. Is formed. Of the window holes 36 and 37, the window hole 37 for projecting the operation handle 19 of the branch switch 9 is provided with the light emitting element of the lightning arrester 10.
LED1 and LED2 (status display section) are exposed, and the status of the lightning arrester 10 can be understood without removing the lid 2 from the box 1. The light-emitting elements LED1, LE1
The two windows 37 and 37 facing D2 (status display section)
Is not provided, the operating handle 19 of the branch switch 9
From each conductive bar 4,5,6.
And two branch switches 9 and 9 can be arranged.
【0031】なお、本実施の形態では、各導電バー 4,
5,6の幅方向両側に分岐開閉器9,9,……を配設している
が、各導電バー 4,5,6の幅方向一方側にのみ分岐開閉器
9,9,……を配設しても良い。In this embodiment, each conductive bar 4,
Branch switches 9, 9, ... are arranged on both sides in the width direction of 5, 6, but only on one side in the width direction of each conductive bar 4, 5, 6
9,9, ... may be provided.
【0032】[0032]
【発明の効果】請求項1記載の分電盤は、2本の電圧極
及び1本の中性極からなる単相三線式配線路に介在する
主幹開閉器と、この主幹開閉器の負荷側に接続され、複
数の分岐接続部を各々有した3本の導電バーと、これら
の導電バーの幅方向に配設して各々2本の導電バーの分
岐接続部に電源側が接続される複数の分岐開閉器と、3
本の導電バーに電源側が各々電気的に接続されるととも
に負荷側が接地され、各分岐開閉器の負荷側に接続され
る負荷を雷サージから保護する避雷器と、を備えた分電
盤において、前記避雷器は、分岐開閉器に横並びに配設
されているので、分岐開閉器を配設するスペースに避雷
器を配設でき、もって小型化を図れる。また、避雷器は
3本の導電バーの各々の分岐接続部に接続されているの
で、避雷器と3本の導電バーとをリード線により電気的
に接続する必要がなくなり、避雷器を各導電バーに電気
的に接続する作業を容易にできる。According to a first aspect of the present invention, there is provided a power distribution panel including a main switch disposed on a single-phase three-wire wiring line including two voltage poles and one neutral pole, and a load side of the main switch. And three conductive bars each having a plurality of branch connecting portions, and a plurality of conductive bars arranged in the width direction of these conductive bars and connected to the power supply side to the branch connecting portions of the two conductive bars respectively. Branch switch and 3
A lightning arrester having a power supply side electrically connected to the conductive bar and a load side grounded, and a lightning arrester for protecting a load connected to the load side of each branch switch from a lightning surge. Since the lightning arresters are arranged side by side on the branch switch, the lightning arrestor can be disposed in the space where the branch switch is disposed, thereby achieving downsizing. Further, since the lightning arrester is connected to each branch connection of the three conductive bars, it is not necessary to electrically connect the lightning arrester and the three conductive bars by lead wires, and the lightning arrester is electrically connected to each conductive bar. Can easily perform the work of connecting the terminals.
【0033】請求項2記載の分電盤は、避雷器の導電バ
ーにおける延出方向の長さを隣合う2つの分岐開閉器の
導電バーにおける延出方向の長さと略同一としているの
で、隣合う2つの分岐開閉器を外し、この位置にそのま
ま避雷器を配設することができ、請求項1記載の効果に
加え、避雷器を取り付ける位置を複数の分岐開閉器の配
設位置間で可変することができる。In the distribution board according to the second aspect, the length of the conductive bar of the surge arrester in the extending direction is substantially the same as the length of the conductive bar of the adjacent two branch switches in the extending direction. The two arresters can be removed, and the arrester can be disposed at this position as it is. In addition to the effect of claim 1, the mounting position of the arrester can be changed between the arrangement positions of the plurality of brunch switches. it can.
【0034】請求項3記載の分電盤は、3本の導電バー
を取着する基板を設け、該基板に分岐開閉器を取り付け
る取付螺子の螺子孔を各導電バーの延出方向で等間隔に
形成するとともに、前記避雷器の隣合う2つの分岐開閉
器を取り付ける螺子孔に対応する位置に、取付螺子が挿
通される挿通孔を形成しているので、隣合う2つの分岐
開閉器を外し、この位置で2つの分岐開閉器を取着する
取付螺子によりそのまま基板に取着でき、請求項2記載
の効果に加え、避雷器を取着する作業を容易にできる。According to a third aspect of the present invention, there is provided a distribution board provided with a substrate on which three conductive bars are mounted, and screw holes of mounting screws for mounting a branch switch on the substrate are arranged at equal intervals in the extending direction of each conductive bar. And an insertion hole through which an attachment screw is inserted is formed at a position corresponding to a screw hole for attaching two adjacent branch switches of the lightning arrester, so that two adjacent branch switches are removed. At this position, the two branch switches can be directly attached to the substrate by the attachment screws for attaching the two branch switches. In addition to the effect of claim 2, the work of attaching the lightning arrester can be facilitated.
【0035】請求項4記載の分電盤は、避雷器は、隣合
う4つの分岐接続部が挿通される4つの収納部を有し、
該4つの収納部のうちの3つに分岐接続部が接続される
電源側の端子を配設しているので、4つの分岐接続部が
各収納部に収納されることとなって、4つの分岐接続部
のうちの1つを切断する必要が無くなり、請求項1乃至
請求項3記載の効果に加え、各分岐接続部を避雷器に接
続する作業が容易になる。According to a fourth aspect of the present invention, the lightning arrester has four storage portions into which four adjacent branch connection portions are inserted.
Since the power supply side terminals to which the branch connection portions are connected to three of the four storage portions are arranged, the four branch connection portions are stored in each storage portion, and four It is not necessary to disconnect one of the branch connections, and in addition to the effects of claims 1 to 3, the work of connecting each branch connection to the lightning arrester is facilitated.
【0036】請求項5記載の分電盤は、避雷器の電源側
の端子に接続される3つの分岐接続部のうちの1つは、
中性極の導電バーと1本の電圧極の導電バーとを切り換
える切換手段により1本の電圧極の導電バーに接続され
ているので、請求項4記載の効果に加え、避雷器から一
番遠い導電バーの接続を容易に行える。According to a fifth aspect of the present invention, one of the three branch connection portions connected to the power supply side terminal of the lightning arrester includes:
Since it is connected to the conductive bar of one voltage pole by switching means for switching between the conductive bar of the neutral pole and the conductive bar of one voltage pole, in addition to the effect of claim 4, it is farthest from the surge arrester. Connection of the conductive bar can be easily performed.
【0037】請求項6記載の分電盤は、避雷器は、各分
岐開閉器の負荷側に負荷を接続する負荷線の引出口から
一番離れた位置に配設されているので、各分岐開閉器の
負荷側に接続される負荷線が避雷器の負荷側には引き回
されないこととなり、請求項1乃至請求項5記載の効果
に加え、現在配設されている避雷器が破壊された後に避
雷器を取り替える作業が容易になる。According to a sixth aspect of the present invention, the lightning arrestor is disposed farthest from the load line outlet connecting the load to the load side of each branch switch. The load line connected to the load side of the lightning arrester will not be routed to the load side of the lightning arrester, and in addition to the effects of claims 1 to 5, the lightning arrester after the currently installed lightning arrester is destroyed The replacement work becomes easy.
【0038】請求項7記載の分電盤は、避雷器の負荷側
の近傍に接地線を接続する接地バーを配設しているの
で、避雷器から接地バーに接続する接地線を短くするこ
とができ、請求項1乃至請求項6記載の効果に加え、避
雷器が接地バーに電気的に接続されているか否か容易に
確認できる。In the power distribution panel according to the present invention, since the grounding bar for connecting the grounding wire is provided near the load side of the arrester, the grounding wire connected from the arrester to the grounding bar can be shortened. In addition to the effects of claims 1 to 6, it can be easily confirmed whether or not the lightning arrester is electrically connected to the ground bar.
【0039】請求項8記載の分電盤は、主幹開閉器、3
本の導電バー、分岐開閉器及び避雷器を収納した一面開
口の箱体と、この箱体の開口を塞ぐとともに、主幹開閉
器及び各分岐開閉器の操作ハンドルを突出する複数の窓
孔を有した蓋体とを備え、前記避雷器に、隣合う2つの
窓孔内に臨む状態表示部を設けているので、蓋体を外さ
ずに窓孔から避雷器の状態を確認でき、請求項1乃至請
求項7記載の効果に加え、避雷器の状態を容易に確認す
ることができる。According to a eighth aspect of the present invention, there is provided a distribution board comprising: a main switch;
It had a single-sided open box housing the conductive bar, the branch switch and the lightning arrester, and a plurality of window holes for closing the opening of the box and projecting the operation handles of the main switch and each branch switch. A cover is provided, and the lightning arrester is provided with a state display portion facing two adjacent window holes, so that the state of the lightning arrester can be checked from the window hole without removing the lid. In addition to the effect described in 7, the state of the lightning arrester can be easily confirmed.
【図1】本発明の一実施の形態を示す分電盤の内部正面
図である。FIG. 1 is an internal front view of a distribution board showing one embodiment of the present invention.
【図2】同上の分電盤全体を示す斜視図である。FIG. 2 is a perspective view showing the entire distribution board according to the first embodiment.
【図3】同上の導電バー及び分岐開閉器の分解斜視図で
ある。FIG. 3 is an exploded perspective view of the conductive bar and the branch switch according to the first embodiment.
【図4】同上の導電バー及び基板の分解斜視図である。FIG. 4 is an exploded perspective view of the conductive bar and the substrate.
【図5】同上の導電バーの分解斜視図である。FIG. 5 is an exploded perspective view of the above conductive bar.
【図6】同上の避雷器を導電バーに接続する説明図であ
る。FIG. 6 is an explanatory view for connecting the lightning arrester to the conductive bar.
【図7】同上の避雷器の斜視図である。FIG. 7 is a perspective view of the lightning arrester according to the first embodiment;
【図8】同上の避雷器の回路図である。FIG. 8 is a circuit diagram of the lightning arrester according to the first embodiment;
1 箱体 2 蓋体 3,4,5 導電バー 7,8 分岐接続部 9 分岐開閉器 10 避雷器 1 Box 2 Lid 3,4,5 Conductive bar 7,8 Branch connection 9 Branch switch 10 Lightning arrester
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平6−153338(JP,A) 特開 平9−233622(JP,A) 特開 平10−257616(JP,A) 実開 平7−11812(JP,U) (58)調査した分野(Int.Cl.7,DB名) H02B 1/40 - 1/42 H02B 1/16 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-153338 (JP, A) JP-A-9-233622 (JP, A) JP-A-10-257616 (JP, A) 11812 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) H02B 1/40-1/42 H02B 1/16
Claims (8)
単相三線式配線路に介在する主幹開閉器と、この主幹開
閉器の負荷側に接続され、複数の分岐接続部を各々有し
た3本の導電バーと、これらの導電バーの幅方向に配設
して各々2本の導電バーの分岐接続部に電源側が接続さ
れる複数の分岐開閉器と、3本の導電バーに電源側が各
々電気的に接続されるとともに負荷側が接地され、各分
岐開閉器の負荷側に接続される負荷を雷サージから保護
する避雷器と、を備えた分電盤において、 前記避雷器は、分岐開閉器に横並びに配設され、3本の
導電バーの各々の分岐接続部に接続されたことを特徴と
する分電盤。1. A main switch which is interposed in a single-phase three-wire wiring line comprising two voltage poles and one neutral pole, and a plurality of branch connection parts which are connected to a load side of the main switch and are connected to each other. Three conductive bars respectively provided, a plurality of branch switches arranged in the width direction of these conductive bars and connected to a branch connection portion of each of the two conductive bars and connected to the power supply side, and three conductive bars A lightning arrester that is electrically connected to the power supply side and the load side is grounded, and protects a load connected to the load side of each branch switch from a lightning surge. A distribution board characterized by being arranged side by side in a switch and connected to each branch connection part of three conductive bars.
の長さを隣合う2つの分岐開閉器の導電バーにおける延
出方向の長さと略同一としたことを特徴とする請求項1
記載の分電盤。2. The length of the conductive bar of the surge arrester in the extending direction is substantially the same as the length of the conductive bar of two adjacent switchgears in the extending direction.
Distribution board described.
け、該基板に分岐開閉器を取り付ける取付螺子の螺子孔
を各導電バーの延出方向で等間隔に形成するとともに、
前記避雷器の隣合う2つの分岐開閉器を取り付ける螺子
孔に対応する位置に、取付螺子が挿通される挿通孔を形
成したことを特徴とする請求項2記載の分電盤。3. A board for attaching the three conductive bars is provided, and screw holes of mounting screws for attaching a branch switch to the board are formed at equal intervals in the extending direction of each conductive bar.
The distribution board according to claim 2, wherein an insertion hole through which a mounting screw is inserted is formed at a position corresponding to a screw hole for mounting two adjacent branch switches of the lightning arrester.
が挿通される4つの収納部を有し、該4つの収納部のう
ちの3つに分岐接続部が接続される電源側の端子を配設
したことを特徴とする請求項1乃至請求項3記載の分電
盤。4. The lightning arrester has four storage portions into which four adjacent branch connection portions are inserted, and a terminal on a power supply side to which three of the four storage portions are connected to the branch connection portions. The distribution board according to any one of claims 1 to 3, further comprising:
3つの分岐接続部のうちの1つは、中性極の導電バーと
1本の電圧極の導電バーとを切り換える切換手段により
1本の電圧極の導電バーに接続されたことを特徴とする
請求項4記載の分電盤。5. One of three branch connection portions connected to a power supply side terminal of the lightning arrester is connected to a neutral pole conductive bar and a voltage pole conductive bar by switching means. The distribution board according to claim 4, wherein the distribution board is connected to a conductive bar of the voltage electrode.
負荷を接続する負荷線の引出口から一番離れた位置に配
設されたことを特徴とする請求項1乃至請求項5記載の
分電盤。6. The lightning arrester is disposed at a position farthest from an outlet of a load line connecting a load to a load side of each branch switch. Distribution board.
続する接地バーを配設したことを特徴とする請求項1乃
至請求項6記載の分電盤。7. The distribution board according to claim 1, further comprising a grounding bar connected to a grounding wire near the load side of the lightning arrester.
開閉器及び避雷器を収納した一面開口の箱体と、この箱
体の開口を塞ぐとともに、主幹開閉器及び各分岐開閉器
の操作ハンドルを突出する複数の窓孔を有した蓋体とを
備え、前記避雷器に、隣合う2つの窓孔内に臨む状態表
示部を設けたことを特徴とする請求項1乃至請求項7記
載の分電盤。8. A one-sided box housing the main switch, the three conductive bars, the branch switch and the lightning arrester, and closing the opening of the box and operating the main switch and each branch switch. 8. A cover having a plurality of window holes protruding a handle, and the lightning arrester is provided with a state display section facing two adjacent window holes. Switchboard.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9055943A JP3013803B2 (en) | 1997-03-11 | 1997-03-11 | Switchboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9055943A JP3013803B2 (en) | 1997-03-11 | 1997-03-11 | Switchboard |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10257617A JPH10257617A (en) | 1998-09-25 |
JP3013803B2 true JP3013803B2 (en) | 2000-02-28 |
Family
ID=13013168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9055943A Expired - Fee Related JP3013803B2 (en) | 1997-03-11 | 1997-03-11 | Switchboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3013803B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4364371B2 (en) * | 1999-11-25 | 2009-11-18 | 河村電器産業株式会社 | Primary feed terminal block |
JP2002345114A (en) * | 2001-05-11 | 2002-11-29 | Kawamura Electric Inc | Safety lamp for power failure |
JP2007209138A (en) * | 2006-02-02 | 2007-08-16 | Daikin Ind Ltd | Surge absorption circuit |
-
1997
- 1997-03-11 JP JP9055943A patent/JP3013803B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH10257617A (en) | 1998-09-25 |
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