JP2582447Y2 - Switch - Google Patents
SwitchInfo
- Publication number
- JP2582447Y2 JP2582447Y2 JP6572793U JP6572793U JP2582447Y2 JP 2582447 Y2 JP2582447 Y2 JP 2582447Y2 JP 6572793 U JP6572793 U JP 6572793U JP 6572793 U JP6572793 U JP 6572793U JP 2582447 Y2 JP2582447 Y2 JP 2582447Y2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- contact
- power transformer
- primary side
- power
- 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 - Lifetime
Links
- 239000012212 insulator Substances 0.000 description 10
- 101100522111 Oryza sativa subsp. japonica PHT1-11 gene Proteins 0.000 description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、例えば需要家側の引き
込み用開閉器として使用される地絡継電器付開閉器の如
く、開閉器を操作する制御器の電源を得るための電源変
圧器用ＰＴ（制御電源用ＰＴ）を備えた開閉器に関す
る。BACKGROUND OF THE INVENTION The present invention relates to a PT for a power transformer for obtaining a power supply of a controller for operating a switch, such as a switch with a ground fault relay used as a pull-in switch on the customer side. The present invention relates to a switch including (PT for control power supply).
【０００２】[0002]
【従来の技術】図２は、この種の開閉器の従来技術を示
している。図において、１０は開閉器であり、主回路の
三相ケーブルＲ，Ｓ，Ｔに挿入された主接点Ｓ1、零相
変流器ＺＣＴ、過電流変流器ＣＴを備えている。また、
Ｓ2は主接点Ｓ1に連動する連動接点、ＴＣは引き外しコ
イル、ＺＰＤは零相コンデンサ、ＬＡは避雷器を示す。
更に、２０は開閉器１０を操作する制御器であり、図示
されていないが内部に地絡継電器等を備えている。2. Description of the Related Art FIG. 2 shows the prior art of this type of switch. In the figure, reference numeral 10 denotes a switch, which includes a main contact S 1 inserted into three-phase cables R, S, T of a main circuit, a zero-phase current transformer ZCT, and an overcurrent transformer CT. Also,
S 2 is interlocking contact interlocked with the main contact S 1, TC is tripping coil, ZPD is the zero-phase capacitor, LA indicates the arrester.
Further, reference numeral 20 denotes a controller for operating the switch 10, and although not shown, a ground fault relay and the like are provided inside.
【０００３】前記開閉器１０において、主回路の二相
（単相）間、例えばケーブルＲ，Ｔ間には電源変圧器用
ＰＴ１１の一次側が接続されている。その二次側は制御
器２０の電源入力端子Ｐ１，Ｐ２を介し内部の機器に接
続されており、所定の電源電圧が得られるように構成さ
れている。なお、電源入力端子Ｐ１，Ｐ２には電源表示
ＬＥＤ２１が接続されている。In the switch 10, the primary side of the power transformer PT11 is connected between two phases (single phase) of the main circuit, for example, between the cables R and T. The secondary side is connected to internal devices via power input terminals P1 and P2 of the controller 20, and is configured to obtain a predetermined power supply voltage. In addition, a power supply display LED 21 is connected to the power supply input terminals P1 and P2.
【０００４】[0004]
【考案が解決しようとする課題】図２から明らかなよう
に、従来では電源変圧器用ＰＴ１１の一次側が開閉器１
０の主回路（ケーブルＲ，Ｔ）に常時接続されている。
このため、開閉器１０を現地に設置して需要家側の耐電
圧試験を行う場合、開閉器１０を開放状態にして主接点
Ｓ1以後の各相に試験電圧を印加すると、印加される相
によっては電源変圧器用ＰＴ１１の一次側に電圧が印加
される。この試験電圧は通常、電源変圧器用ＰＴ１１の
定格電圧よりも高い電圧である。As is apparent from FIG. 2, the primary side of the conventional power transformer PT11 is the switch 1
0 is always connected to the main circuit (cables R and T).
Therefore, when performing a withstand voltage test of the customer side by installing a switch 10 to local and then the switch 10 in the open state is applied to each phase to the test voltage of the main contact S 1 after, phase of the applied In some cases, a voltage is applied to the primary side of the power transformer PT11. This test voltage is usually higher than the rated voltage of the power transformer PT11.
【０００５】従って、電源変圧器用ＰＴ１１に過大な電
圧が印加されることになり、ＰＴ１１が故障する恐れが
ある。同時に、ＰＴ１１の二次側にも過大な電圧が現わ
れるので、制御器２０内の各種機器の故障の原因ともな
る。また、耐電圧試験のために余裕を見てＰＴ１１の定
格電圧を大きくすることも考えられるが、開閉器の大形
化やコストの上昇を招く不都合がある。Accordingly, an excessive voltage is applied to the power transformer PT11, and the PT11 may be broken. At the same time, an excessive voltage appears on the secondary side of the PT 11, which may cause failure of various devices in the controller 20. In addition, it is conceivable to increase the rated voltage of the PT 11 with a margin for the withstand voltage test, but there is a disadvantage that the switch becomes larger and the cost increases.
【０００６】本考案は上記問題点を解決するためになさ
れたもので、その目的とするところは、耐電圧試験時の
電源変圧器用ＰＴ自体やこれに接続された各種機器の故
障を未然に防止するようにした開閉器を提供することに
ある。The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to prevent a failure of a power transformer PT itself and various devices connected thereto during a withstand voltage test. It is an object of the present invention to provide a switch which is designed to perform the operation.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本考案は、制御器の電源を得るための電源変圧器用
ＰＴを備えた開閉器において、前記開閉器主接点を構成
する可動接触子と固定接触子との接続、開放に連動させ
て、前記電源変圧器用ＰＴの一次側を主回路に対し接
続、開放するものである。In order to achieve the above object, the present invention relates to a switch provided with a PT for a power transformer for obtaining a power supply of a controller, wherein a movable contact forming the switch main contact is provided. The primary side of the power transformer PT is connected to and opened from the main circuit in conjunction with the connection and opening of the power transformer and the fixed contact.
【０００８】[0008]
【作用】本考案において、需要家側の耐電圧試験のため
に開閉器の主接点を開放した状態では、電源変圧器用Ｐ
Ｔの一次側も主回路から開放されているため、過大な試
験電圧が電源変圧器用ＰＴの一次側に印加されることが
なく、ＰＴ及びその二次側に接続された各種機器の故障
を防止することができる。In the present invention, when the main contact of the switch is opened for the withstand voltage test on the customer side, the power transformer P
Since the primary side of T is also open from the main circuit, excessive test voltage is not applied to the primary side of the power transformer PT, preventing failure of the PT and various devices connected to its secondary side. can do.
【０００９】[0009]
【実施例】以下、図に沿って本考案の実施例を説明す
る。図１はこの実施例の内部構造を示すものであり、開
閉器１０′の外箱１７には、電源側のケーブル１２ａが
ブッシング１３ａを介して取り付けられ、ケーブル１２
ａには図２に示した零相変流器ＺＣＴを介してリード線
１４ａの一端が接続されている。また、リード線１４ａ
の他端は、図２における主接点Ｓ1の一部を構成する第
１の固定接触子１５ａに接続されており、この固定接触
子１５ａは支持碍子１６ａにより支持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the internal structure of this embodiment. A power supply side cable 12a is attached to an outer box 17 of a switch 10 'via a bushing 13a.
a is connected to one end of a lead wire 14a via the zero-phase current transformer ZCT shown in FIG. Also, lead wire 14a
The other end is connected to the first fixed contact 15a which constitutes a part of the main contact S 1 in FIG. 2, the stationary contact 15a is supported by the support insulators 16a.
【００１０】一方、外箱１７には、負荷側のケーブル１
２ｂがブッシング１３ｂを介して取り付けられており、
ケーブル１２ｂには図２に示した過電流変流器ＣＴを介
して主接点Ｓ1の一部を構成するほぼＬ字形の可動接触
子１５ｃが接続され、この可動接触子１５ｃは支持碍子
１６ｃにより支持されている。On the other hand, the outer box 17 has a cable 1 on the load side.
2b is attached via a bushing 13b,
The cable 12b movable contact 15c of the generally L-shaped to form a part of the main contact S 1 via an overcurrent current transformer CT shown in FIG. 2 are connected, the movable contact 15c by the support insulator 16c Supported.
【００１１】支持碍子１６ａと支持碍子１６ｃとの間に
は、中間支持碍子１６ｂが配置されている。中間支持碍
子１６ｂの下端部には短尺の第２の固定接触子１５ｂが
接続されており、可動接触子１５ｃを回動させて第１の
固定接触子１５ａに接触させると、可動接触子１５ｃは
同時に第２の固定接触子１５ｂにも接触し、可動接触子
１５ｃを第１の固定接触子１５ａから開離させると同時
に第２の固定接触子１５ｂからも開離するようになって
いる。また、第２の固定接触子１５ｂには、リード線１
４ｂを介して電源変圧器用ＰＴ１１の一次側が接続され
ている。[0011] An intermediate support insulator 16b is arranged between the support insulator 16a and the support insulator 16c. A short second fixed contact 15b is connected to the lower end of the intermediate support insulator 16b. When the movable contact 15c is rotated to contact the first fixed contact 15a, the movable contact 15c At the same time, it comes into contact with the second fixed contact 15b, so that the movable contact 15c is separated from the first fixed contact 15a and, at the same time, is separated from the second fixed contact 15b. The second fixed contact 15b has a lead wire 1
The primary side of the power transformer PT11 is connected via 4b.
【００１２】なお、図１におけるケーブル１２ａ，１２
ｂ、ブッシング１３ａ，１３ｂ、リード線１４ａ、第１
の固定接触子１５ａ、支持碍子１６ａ，１６ｃ、可動接
触子１５ｃ等は三相分設けられていると共に、中間支持
碍子１６ｂ、第２の固定接触子１５ｂ、リード線１４ｂ
等は二相（単相）分設けられている。Note that the cables 12a and 12 in FIG.
b, bushings 13a, 13b, lead wire 14a, first
The fixed contact 15a, the support insulators 16a and 16c, the movable contact 15c, and the like are provided for three phases, and the intermediate support insulator 16b, the second fixed contact 15b, and the lead wire 14b are provided.
Are provided for two phases (single phase).
【００１３】このように本実施例では、開閉器１０′の
主接点Ｓ1を構成する可動接触子１５ｃと第１の固定接
触子１５ａとの接続、開放に連動させて、電源変圧器用
ＰＴ１１の一次側を開閉器１０′の主回路に対し接続、
開放するようにしたため、例えば、需要家側の耐電圧試
験時に主接点Ｓ1を開放すると同時に電源変圧器用ＰＴ
１１の一次側も主回路から開放されることになる。従っ
て、通常高電圧である試験電圧が電源変圧器用ＰＴ１１
の一次側に印加されることがなく、このＰＴ１１や制御
器２０内の被給電機器が過電圧により故障する恐れはな
い。[0013] In this embodiment Thus, the connection between the movable contact 15c to the first fixed contact 15a which constitutes a main contact S 1 of the switch 10 ', in conjunction to open, power transformers PT11 Connect the primary side to the main circuit of the switch 10 ',
Since you to open, for example, at the same time the power transformers if opening the main contact S 1 when the withstand voltage test of the customer side PT
The primary side of 11 is also released from the main circuit. Therefore, the test voltage, which is usually a high voltage, is the power transformer PT11.
Is not applied to the primary side, and there is no possibility that the power-supplied device in the PT 11 or the controller 20 may be damaged by an overvoltage.
【００１４】なお、上記実施例では可動接触子１５ｃ及
び第２の固定接触子１５ｂの接続、開放を主接点Ｓ1と
しての可動接触子１５ｃ及び第１の固定接触子１５ａの
接続、開放に連動させて行っているが、主接点Ｓ1との
インターロックによって電源変圧器用ＰＴ１１の一次側
を開閉器１０′の主回路に対し接続、開放しても良い。[0014] The connection of the movable contact 15c and the first fixed contact 15a of the connection of the movable contact 15c and the second fixed contact 15b in the above embodiment, the opening as a main contact S 1, in conjunction with the opening However, the primary side of the power transformer PT 11 may be connected to and opened from the main circuit of the switch 10 ′ by interlocking with the main contact S 1 .
【００１５】[0015]
【考案の効果】以上のように本考案によれば、需要家側
の耐電圧試験のために開閉器の主接点を開放した状態で
は、電源変圧器用ＰＴの一次側も主回路から開放される
ため、過大な試験電圧が電源変圧器用ＰＴの一次側に印
加されることがなく、ＰＴ及びその二次側に接続された
各種機器が過電圧により故障するのを防止することがで
きる。また、過電圧を見込んで定格電圧の大きい電源変
圧器用ＰＴを使用する必要がないから、開閉器の大形
化、重量化及びコストの上昇を招くこともない。As described above, according to the present invention, when the main contact of the switch is opened for the withstand voltage test on the customer side, the primary side of the power transformer PT is also opened from the main circuit. For this reason, an excessive test voltage is not applied to the primary side of the power transformer PT, so that it is possible to prevent the PT and various devices connected to the secondary side from being damaged by the overvoltage. Further, since it is not necessary to use a power transformer PT having a large rated voltage in anticipation of an overvoltage, there is no increase in the size, weight, and cost of the switch.
【図１】本考案の実施例の内部構造を示す図である。FIG. 1 is a diagram showing an internal structure of an embodiment of the present invention.
【図２】従来の技術を示す回路図である。FIG. 2 is a circuit diagram showing a conventional technique.
【符号の説明】 １０，１０′ 開閉器 １１ 電源変圧器用ＰＴ １２ａ，１２ｂ ケーブル １３ａ，１３ｂ ブッシング １４ａ，１４ｂ リード線 １５ａ 第１の固定接触子 １５ｂ 第２の固定接触子 １５ｃ 可動接触子 １６ａ，１６ｃ 支持碍子 １６ｂ 中間支持碍子 １７ 外箱 ２０ 制御器 ２１ 電源表示ＬＥＤ ＺＣＴ 零相変流器 Ｓ1 主接点 Ｓ2 連動接点 ＺＰＤ 零相コンデンサ ＴＣ 引き外しコイル ＣＴ 過電流変流器 ＬＡ 避雷器 Ｐ１，Ｐ２ 電源入力端子DESCRIPTION OF SYMBOLS 10, 10 'Switch 11 PT for power transformer 12a, 12b Cable 13a, 13b Bushing 14a, 14b Lead wire 15a First fixed contact 15b Second fixed contact 15c Movable contact 16a, 16c support insulators 16b intermediate support insulator 17 outer box 20 controls 21 the power indicator LED ZCT ZCT S 1 main contact S 2-interlock contact ZPD zero-phase capacitor TC tripping coil CT overcurrent current transformer LA arrester P1, P2 power Input terminal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01H 33/42 H01H 31/02 H02B 3/00──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) H01H 33/42 H01H 31/02 H02B 3/00
Claims (1)
ＰＴを備えた開閉器において、 前記開閉器の主接点を構成する可動接触子と固定接触子
との接続、開放に連動させて、前記電源変圧器用ＰＴの
一次側を主回路に対し接続、開放することを特徴とする
開閉器。1. A switch provided with a power transformer PT for obtaining a power supply of a controller, wherein a switch and a movable contact forming a main contact of the switch are connected and opened in conjunction with each other, A switch wherein the primary side of the power transformer PT is connected to and opened from a main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6572793U JP2582447Y2 (en) | 1993-11-15 | 1993-11-15 | Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6572793U JP2582447Y2 (en) | 1993-11-15 | 1993-11-15 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0730433U JPH0730433U (en) | 1995-06-06 |
| JP2582447Y2 true JP2582447Y2 (en) | 1998-10-08 |
Family
ID=13295347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6572793U Expired - Lifetime JP2582447Y2 (en) | 1993-11-15 | 1993-11-15 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582447Y2 (en) |
-
1993
- 1993-11-15 JP JP6572793U patent/JP2582447Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730433U (en) | 1995-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980714 |
|
| R250 | Receipt of annual fees |
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| EXPY | Cancellation because of completion of term |