JPH02881Y2 - - Google Patents
Info
- Publication number
- JPH02881Y2 JPH02881Y2 JP8141982U JP8141982U JPH02881Y2 JP H02881 Y2 JPH02881 Y2 JP H02881Y2 JP 8141982 U JP8141982 U JP 8141982U JP 8141982 U JP8141982 U JP 8141982U JP H02881 Y2 JPH02881 Y2 JP H02881Y2
- Authority
- JP
- Japan
- Prior art keywords
- arrester
- conductor
- low
- display
- section
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 17
- 230000006866 deterioration Effects 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Description
【考案の詳細な説明】
本考案は低圧アレスターに関し、特に配電線路
において二条の電線からの雷電流のアースへの放
流と、避雷器素子の劣化表示を単一のアレスター
によつて行なうことにより取り付けスペースを縮
少化した低圧アレスターに関する。[Detailed description of the invention] The present invention relates to a low-voltage arrester, in particular, in a power distribution line, by discharging lightning current from two wires to the ground and indicating the deterioration of the arrester element by using a single arrester. Regarding a low-pressure arrester with a reduced size.
低圧アレスターとしてZnO等の無続流特性を有
する避雷器素子と、該素子が劣化したときそれを
表示する表示部をそなえたものがある。該低圧ア
レスターは吊り鐘型の絶縁体中にZnO等より成る
避雷器素子を設け、該素子のアース側電極に表示
部をハンダ付けで固定し、ハンダ付け部が溶融し
たとき表示部を弾性力で突出させる構成を有し、
更に落雷等によつて素子が急激に劣化しても短絡
電流を遮断できるように消弧部を備えている。 Some low-pressure arresters are equipped with a lightning arrester element such as ZnO having a non-following current characteristic, and a display section that indicates when the element has deteriorated. This low-voltage arrester has a lightning arrester element made of ZnO or the like in a bell-shaped insulator, and a display part is fixed to the earth electrode of the element by soldering.When the soldered part melts, the display part is activated by elastic force. It has a protruding configuration,
Furthermore, it is provided with an arc-extinguishing part so that short-circuit current can be cut off even if the element deteriorates rapidly due to a lightning strike or the like.
以上の構成においてその絶縁抵抗が所定のレベ
ルまで低下すると、漏洩電流が所定値を越えハン
ダが溶融して表示部が突出するため前記素子の劣
化を適確に知ることができ、更に比較的大きな短
絡電流が流れても確実に遮断することができる。 In the above configuration, when the insulation resistance decreases to a predetermined level, the leakage current exceeds the predetermined value, the solder melts, and the display part protrudes, making it possible to accurately know the deterioration of the element. Even if a short circuit current flows, it can be cut off reliably.
しかし、従来の低圧アレスターにあつては、際
雨時の雨追い構造等を考慮して、吊り鐘型の絶縁
体の下部に素子の劣化表示部を突出させているた
め、形状が大型化し、また、１条の線路電線ごと
に一台のアレスターを取り付けるため使用される
アレスターの数、取り付けスペース、取り付け手
数、コスト、の増大は避けられなかつた。 However, in the case of conventional low-voltage arresters, the deterioration display part of the element is made to protrude from the bottom of the bell-shaped insulator in consideration of the rain chasing structure during heavy rain, so the shape becomes larger. Furthermore, since one arrester is attached to each line of electrical wire, an increase in the number of arresters used, the installation space, the number of installation steps, and the cost is unavoidable.
本考案は上記に鑑みてなされたものであり、２
線式配電線路に取り付けられるアレスターの使用
個数、取り付けスペース、取り付け手数及びコス
トの縮減を達成するため単一のアレスターによつ
て２条の線路電線のアレスターを兼ねるようにし
た低圧アレスターを提供するものである。 This invention was made in view of the above, and 2.
To provide a low-voltage arrester in which a single arrester doubles as an arrester for two line electric wires in order to reduce the number of arresters used, installation space, installation effort, and cost to be installed on a wire distribution line. It is.
以下本考案の低圧アレスターを詳細に説明す
る。 The low pressure arrester of the present invention will be explained in detail below.
第１図は本考案の低圧アレスターの一実施例を
示し、同図に示すようにアレスター１は配電線路
側導体２，３及び接地側導体４と接続される。 FIG. 1 shows an embodiment of the low voltage arrester of the present invention, and as shown in the figure, the arrester 1 is connected to distribution line side conductors 2, 3 and a ground side conductor 4.
第２図イ，ロはそれぞれ本考案のアレスターの
避雷器素子正常作動時及び劣化表示部作動時の内
部状態の説明図であり、第２図イに示すようにア
レスター１は中空円筒形の絶縁材料からなる基枠
５を有し、該基枠５はその両端部に各線路側導体
端子２ａ，３ａを保持するキヤツプ６，７を水密
嵌着するための開口部を有する。該筒形基枠５の
周面上には、接地側導体端子４ａを保持したキヤ
ツプ８を嵌着するキヤツプ受承部９を一体成形
し、その反対側周面上には透明材料から成る表示
窓１０を嵌着する表示窓受承部１１を一体形成す
る。 Figures 2A and 2B are explanatory diagrams of the internal state of the arrester of the present invention when the arrester element is in normal operation and when the deterioration indicator is in operation, respectively.As shown in Figure 2A, the arrester 1 is made of a hollow cylindrical insulating material. The base frame 5 has openings at both ends thereof for water-tightly fitting caps 6 and 7 for holding the respective line-side conductor terminals 2a and 3a. On the peripheral surface of the cylindrical base frame 5, a cap receiving part 9 into which the cap 8 holding the ground side conductor terminal 4a is fitted is integrally molded, and on the opposite peripheral surface there is a display made of a transparent material. A display window receiving part 11 into which the window 10 is fitted is integrally formed.
前記キヤツプ６及び７はそれぞれ線路側導体端
子２ａ，３ａの外周に絶縁体を同軸状に一体形成
して成るもので、各キヤツプ内側端面からは端子
２ａ，３ａの先端が突出し、各端子は基枠５内に
於てばね１３（導体から構成する）を介してZnO
等の無続流特性を有する避雷器素子１４ａ，１４
ｂと電気的に接続する。 The caps 6 and 7 are formed by integrally coaxially forming an insulator on the outer periphery of the line-side conductor terminals 2a and 3a, respectively.The tips of the terminals 2a and 3a protrude from the inner end surface of each cap, and each terminal is connected to the base. ZnO is placed inside the frame 5 via a spring 13 (consisting of a conductor).
Lightning arrester elements 14a, 14 having non-following characteristics such as
electrically connect to b.
前記キヤツプ受承部９及び表示窓受承部１１の
内側底部（基枠５の周面）には孔９ａ，１１ａを
形成し、該孔９ａ，１１ａ間には中空円筒状のス
リーブ１２（導体から構成する）を挿通する。 Holes 9a and 11a are formed in the inner bottom portions (periphery of the base frame 5) of the cap receiving portion 9 and the display window receiving portion 11, and a hollow cylindrical sleeve 12 (conductor) is formed between the holes 9a and 11a. (consisting of).
前記キヤツプ８は接地側導体端子４ａの外周に
絶縁体を同軸状に一体形成して成るもので、キヤ
ツプ８の内側端面の凹所８ａから端子４ａが突出
し、該端子４ａが第２図イに示す如くスリーブ１
２の開口端部１２ａ内に挿入されて、すべり関係
で電気的接続される。該開口端部１２ａには例え
ば図示のようにスリツト１２ｂを形成してバネ性
を与える。スリーブ１２の他端には係止用折返部
１２ｃが形成され、該折返部１２ｃと表示窓受承
部の底部との間で、スリーブ１２の外周に装着さ
れたスプリング１５を圧縮保持する。符号１６は
表示部を兼用するスプリングリテーナを示し、そ
の外周は例えば赤色に着色する。スリーブ１２の
側面中央部にはヒユーズ１７の挿通孔１２ｄを形
成し、一対の素子１４の各対向面上（接地側電極
上）にヒユーズ１７の両端部をハンダ等の低融合
金１８によつて固着する。符号１９は、一対の素
子１４ａ，１４ｂを保持するスペーサであり、２
０は、水密性保持のため導体からキヤツプにかけ
て設けられたカバーである。 The cap 8 is formed by coaxially coaxially forming an insulator on the outer periphery of a ground conductor terminal 4a. Sleeve 1 as shown
2 and are electrically connected in a sliding relationship. For example, as shown in the figure, a slit 12b is formed in the open end 12a to provide spring properties. A locking folded part 12c is formed at the other end of the sleeve 12, and a spring 15 attached to the outer periphery of the sleeve 12 is compressed and held between the folded part 12c and the bottom of the display window receiving part. Reference numeral 16 indicates a spring retainer which also serves as a display section, and its outer periphery is colored, for example, red. An insertion hole 12d for the fuse 17 is formed in the center of the side surface of the sleeve 12, and both ends of the fuse 17 are connected to each opposing surface of the pair of elements 14 (on the ground side electrode) with a low alloy metal 18 such as solder. stick. Reference numeral 19 is a spacer that holds a pair of elements 14a and 14b;
0 is a cover provided from the conductor to the cap to maintain watertightness.
以上の構成において、素子１４ａ，１４ｂの絶
縁抵抗が所定値以上に維持されている場合は、第
２図イに示すようにヒユーズ１７の両端部は各素
子１４ａ，１４ｂの対向面上にハンダ１８によつ
て固着されており、該ヒユーズ１７はスリーブの
挿通孔１２ｄ内においてスリーブ１２及びスプリ
ング１５を図示の状態に保持する。素子１４ａ，
１４ｂの劣化にもとづいて、線路側導体２及び
（または）３から各素子１４ａ，１４ｂをへてア
ースへ流れる漏洩電流が所定値を越えると、劣化
した素子（図面では素子１４ａ）側のハンダ１８
が溶融して固着力が弱まり、スプリング１５の拡
開力に抗し切れなくなつて、劣化側の素子からヒ
ユーズの一端部が脱落する。ヒユーズ１７の一端
部が素子から分離すると、スプリング１５の拡開
力によつてスリーブ１２が矢印方向に移動し、第
２図ロに示すようにリテーテ１６を保持したま
ま、表示窓１０内部へ突出して劣化素子を行な
う。このとき接地側導体端子４ａはスリーブ１２
の開口端部１２ａから完全に離脱して接続が絶た
れる。 In the above configuration, if the insulation resistance of the elements 14a, 14b is maintained at a predetermined value or higher, both ends of the fuse 17 are connected to the solder 18 on the opposing surfaces of the elements 14a, 14b, as shown in FIG. The fuse 17 holds the sleeve 12 and spring 15 in the illustrated state within the sleeve insertion hole 12d. element 14a,
When the leakage current flowing from the line side conductor 2 and/or 3 to the ground through each element 14a, 14b exceeds a predetermined value due to deterioration of the solder 14b, the solder 18 on the deteriorated element (element 14a in the drawing) side
melts and weakens its adhesion, becoming unable to resist the expanding force of the spring 15, and one end of the fuse falls off from the deteriorated element. When one end of the fuse 17 is separated from the element, the expansion force of the spring 15 moves the sleeve 12 in the direction of the arrow, and it protrudes into the display window 10 while holding the retainer 16, as shown in FIG. The deterioration element is determined by At this time, the ground side conductor terminal 4a is connected to the sleeve 12.
The connection is severed by completely separating from the open end 12a.
以上説明した通り、本考案の低圧アレスターに
よれば、単一のアレスターによつて２条の線路電
線のアレスターを兼ねるようにしたため、２線式
配電線路に取り付けられるアレスターの使用個
数、取り付けスペース、取り付け手数及びコスト
の縮減を達成できる。 As explained above, according to the low-voltage arrester of the present invention, a single arrester doubles as an arrester for two line electric wires. It is possible to reduce the number of installation steps and costs.
第１図は本考案の低圧アレスターの一実施例で
あり、第２図イ及びロはそれぞれ本考案の低圧ア
レスターの避雷器素子正常作動時及び劣化表示部
作動時の内部状態の説明図である。
符号の説明、１……アレスター、２，３……配
電線路側導体、２ａ，３ａ……端子、４……接地
側導体、４ａ……端子、５……基枠、６，７……
線路側キヤツプ、８……接地側キヤツプ、９……
キヤツプ受承部、１０……表示窓、１１……表示
窓受承部、９ａ，１１ａ……孔、１２……スリー
ブ、１２ａ……開口端部、１２ｂ……スリツト、
１２ｃ……係止用折返部、１２ｄ……挿通孔、１
３……ばね、１４ａ，１４ｂ……避雷器素子、１
５……スプリング、１６……スプリングリテー
ナ、１７……ヒユーズ、１８……低融合金、１９
……スペーサ、２０……カバー、２１……水密用
リング。
FIG. 1 shows an embodiment of the low-pressure arrester of the present invention, and FIGS. 2A and 2B are explanatory diagrams of the internal state of the low-pressure arrester of the present invention when the arrester element is in normal operation and when the deterioration indicator is in operation, respectively. Explanation of symbols, 1... Arrestor, 2, 3... Distribution line side conductor, 2a, 3a... Terminal, 4... Grounding side conductor, 4a... Terminal, 5... Base frame, 6, 7...
Track side cap, 8... Ground side cap, 9...
Cap receiving part, 10...display window, 11...display window receiving part, 9a, 11a...hole, 12...sleeve, 12a...opening end, 12b...slit,
12c...Folding part for locking, 12d...Insertion hole, 1
3... Spring, 14a, 14b... Lightning arrester element, 1
5...Spring, 16...Spring retainer, 17...Fuse, 18...Low alloy, 19
...Spacer, 20...Cover, 21...Watertight ring.
Claims (1)
劣化表示を行う表示部を備えた低圧アレスターに
おいて、 前記避雷器部が２つの配電線路に対応するとと
もに接地側導体を共有する２つの避雷器素子より
構成され、 前記表示部は、前記２つの避雷器素子を前記接
地側導体に接続する導体を固定する低融点合金
と、前記導体の固定に基づいて突出用弾性部材の
弾性力に抗して固定された表示用突出部から成
り、 前記低融点合金は、前記避雷器素子の劣化電流
が所定のレベルに達したとき溶融して、前記表示
用突出部を前記弾性力に基づいて突出表示させる
と共に前記避雷器素子の接地を解除することを特
徴とする低圧アレスター。[Claims for Utility Model Registration] A low-voltage arrester equipped with a surge arrester section having a non-follow current characteristic and a display section that displays deterioration of the surge arrester section, wherein the surge arrester section corresponds to two distribution lines and a ground side conductor. The display unit includes a low melting point alloy that fixes a conductor that connects the two lightning arrester elements to the ground conductor, and a protruding elastic member based on the fixation of the conductor. The display projection is fixed against an elastic force, and the low melting point alloy is melted when the deterioration current of the arrester element reaches a predetermined level, and the display projection is fixed against the elastic force. A low-voltage arrester characterized in that the lightning arrester element is displayed in a protruding manner and the grounding of the lightning arrester element is released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8141982U JPS58183791U (en) | 1982-06-01 | 1982-06-01 | low pressure arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8141982U JPS58183791U (en) | 1982-06-01 | 1982-06-01 | low pressure arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58183791U JPS58183791U (en) | 1983-12-07 |
| JPH02881Y2 true JPH02881Y2 (en) | 1990-01-10 |
Family
ID=30090527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8141982U Granted JPS58183791U (en) | 1982-06-01 | 1982-06-01 | low pressure arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58183791U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6430020B1 (en) * | 1998-09-21 | 2002-08-06 | Tyco Electronics Corporation | Overvoltage protection device including wafer of varistor material |
-
1982
- 1982-06-01 JP JP8141982U patent/JPS58183791U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58183791U (en) | 1983-12-07 |
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