JPH023232Y2 - - Google Patents
Info
- Publication number
- JPH023232Y2 JPH023232Y2 JP461183U JP461183U JPH023232Y2 JP H023232 Y2 JPH023232 Y2 JP H023232Y2 JP 461183 U JP461183 U JP 461183U JP 461183 U JP461183 U JP 461183U JP H023232 Y2 JPH023232 Y2 JP H023232Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- seal
- contact
- timer
- relay
- 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
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 241000219198 Brassica Species 0.000 description 2
- 235000003351 Brassica cretica Nutrition 0.000 description 2
- 235000003343 Brassica rupestris Nutrition 0.000 description 2
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000010460 mustard Nutrition 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Keying Circuit Devices (AREA)
Description
【考案の詳細な説明】
本考案はシールイン解除用タイマ回路に関す
る。[Detailed Description of the Invention] The present invention relates to a timer circuit for canceling seal-in.
従来からしや断器等の開閉器を備えた電力系統
においては、もし系統に事故が発生した場合保護
リレーを動作させ、シールイン回路を形成した
後、しや断器をトリツプして、しや断器の接点の
解放動作によりシールイン回路を解除するように
している。 Conventionally, in power systems equipped with switches such as mustard disconnectors, if an accident occurs in the system, a protective relay is activated to form a seal-in circuit, and then the mustard disconnector is tripped. The seal-in circuit is released by releasing the contact of the disconnector.
ところで、しや断器の不良等によりシールイン
回路が解除されずシールイン電流が継続する場合
には、シールイン回路に介挿された限流抵抗が連
続的な発熱に対しても規定の特性を維持しなけれ
ばならない。しかしながら、実際には限流抵抗と
して用いる抵抗器のワツト数の制約から、抵抗の
小型化が図れない。従つて、高密度の実装の盤構
成の場合には、スペース的に不利である。また、
閉鎖形盤内にこのような抵抗器を収納しようとす
る場合には、特に盤内の温度上昇について充分考
慮する必要がある。 By the way, if the seal-in circuit is not released and the seal-in current continues due to a defect in the circuit breaker, etc., the current limiting resistor inserted in the seal-in circuit will not meet the specified characteristics even against continuous heat generation. must be maintained. However, in practice, it is not possible to reduce the size of the resistor due to restrictions on the wattage of the resistor used as the current limiting resistor. Therefore, in the case of a board configuration with high-density packaging, there is a disadvantage in terms of space. Also,
If such a resistor is to be housed in a closed board, sufficient consideration must be given to the temperature rise within the board.
本考案は上記の点に鑑みてなされてもので、シ
ールイン回路形成後、しや断器等の開閉器の動作
時間よりも充分長い時限を有するタイマ手段によ
り、しや断器等が不良の場合においてもシールイ
ン回路を自動的に解除できるようにして、シール
イン回路に介挿される限流抵抗の寸法及び限流抵
抗が収納される盤内の温度上昇などに対する製作
上の制約を除去したシールイン解除用タイマ回路
を提供することを目的とする。 The present invention has been developed in view of the above points, and after the formation of a seal-in circuit, a timer means having a time limit sufficiently longer than the operating time of the switch such as the switch, such as the switch, is used to detect the fault of the switch, such as the switch. The seal-in circuit can be automatically released even in cases where the seal-in circuit is removed, thereby eliminating manufacturing constraints on the dimensions of the current-limiting resistor inserted in the seal-in circuit and the temperature rise inside the panel in which the current-limiting resistor is housed. The purpose of the present invention is to provide a timer circuit for canceling seal-in.
以下、本考案の一実施例を添附された図面と共
に説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
第１図は本考案に係るシールイン解除用タイマ
回路の一実施例を示す回路図である。 FIG. 1 is a circuit diagram showing an embodiment of a seal-in release timer circuit according to the present invention.
同図において、１０ａは主検出リレーの常開接
点、１２ａは事故検出リレーの接点、Ｒは限流抵
抗、１４Ａは電流リレーの励磁コイル、１４a1〜
１４a3はこの励磁コイル１４Ａの励磁により投入
される常開接点、１６Ａは補助リレーの励磁コイ
ル、１６ａはこの励磁コイル１６Ａの常開接点で
ある。２０は図示されないしや断器側に付設され
た回路部分で、２０Ａはトリツプコイル、２２a1
〜２２a3はしや断器の接点に連動したリレー接点
である。 In the figure, 10a is the normally open contact of the main detection relay, 12a is the contact of the accident detection relay, R is the current limiting resistor, 14A is the excitation coil of the current relay, and 14a 1 -
14a3 is a normally open contact that is closed by the excitation of this excitation coil 14A, 16A is an excitation coil of the auxiliary relay, and 16a is a normally open contact of this excitation coil 16A. 20 is a circuit part not shown but attached to the disconnector side, 20A is a trip coil, 22a 1
~22a 3 It is a relay contact linked to the contact of the cutter.
３０Ｔ，４０Ｔは本考案により新たに設けられ
たタイマーで、３０a1，３０a2はタイマ３０Ｔの
常開接点、４０ｂはタイマ４０Ｔの常閉接点であ
る。後述する如くしや断器不良等の場合、リレー
接点２２a2がONのままでシールイン状態が継続
している時、タイマ３０Ｔの起動に連動したタイ
マ４０Ｔの出力により接点４０ｂがOFFとなり
シールインを解除するように構成されている。 30T and 40T are timers newly provided according to the present invention, 30a 1 and 30a 2 are normally open contacts of the timer 30T, and 40b is a normally closed contact of the timer 40T. In the case of a failure or disconnection failure as described later, when the relay contact 22a2 remains ON and the seal-in state continues, the output of the timer 40T linked to the activation of the timer 30T turns the contact 40b OFF and the seal-in state continues. is configured to release the .
次に第１図に示す実施例回路の動作について説
明する。 Next, the operation of the embodiment circuit shown in FIG. 1 will be explained.
電力系統における事故発生等により、主検出リ
レーの接点１０ａと事故検出リレーの接点１２ａ
が共にONとなると、しや断器が投入状態で対応
するリレー接点２２a2がON状態であるため、電
流リレーの励磁コイル１４Ａが励磁されシールイ
ン回路が形成される。これによつて、各常開接点
１４a1，１４a2，１４a3はONとなる。接点１４
a1の投入により、前述した理由によりリレー接点
２２a1がONであるため、トリツプコイル２０Ａ
が励磁されしや断器をトリツプしようとする。ま
た接点１４a2の投入により、自己保持回路が形成
されシールイン電流が限流抵抗Ｒを介して流れ
る。更に接点１４a3の投入によりタイマ３０Ｔが
励磁される。この時、しや断器が正常にトリツプ
動作をすれば、接点２２a2がOFFとなるため、
シールインが解除されてタイマ３０Ｔ，４０Ｔは
動作しない。しかし、しや断器が何らかの原因で
動作不良を起した場合、リレー接点２２a1〜２２
a3はON状態であるため、シールイン回路は解除
されず限流抵抗Ｒにシールイン電流が流れる。 Due to the occurrence of an accident in the power system, contact 10a of the main detection relay and contact 12a of the accident detection relay
When both are turned on, the breaker is closed and the corresponding relay contact 22a2 is turned on, so the excitation coil 14A of the current relay is excited and a seal-in circuit is formed. As a result, each normally open contact 14a 1 , 14a 2 , 14a 3 is turned on. Contact 14
Due to the above-mentioned reason, the relay contact 22a1 is ON due to the input of a1 , so the trip coil 20A
is energized and attempts to trip the disconnector. Further, by closing the contact 14a2 , a self-holding circuit is formed and a seal-in current flows through the current limiting resistor R. Furthermore, the timer 30T is excited by closing the contact 14a3 . At this time, if the circuit breaker trips normally, contact 22a2 will be OFF, so
Seal-in is canceled and timers 30T and 40T do not operate. However, if the breaker malfunctions for some reason, the relay contacts 22a 1 to 22
Since a3 is in the ON state, the seal-in circuit is not released and the seal-in current flows through the current limiting resistor R.
この場合、前述したタイマ３０Ｔの励磁により
所定の設定時間後接点３０a1がONして自己保持
回路が形成されると共に、接点３０a2がONして
タイマ４０Ｔが励磁される。このタイマ４０Ｔの
励磁により所定の設定時間後、常閉接点４０ｂが
OFF状態となりしや断器不良等で接点２２a2が
閉成状態のままであつても電流リレーの励磁コイ
ル１４Ａは消磁され、シールイン回路は解除され
限流抵抗Ｒにシールイン電流が流れ続けることは
ない。従つて、限流抵抗Ｒを大容量にしたり、温
度上昇に対して特別な対策をたてる必要はない。 In this case, the contact 30a 1 is turned on after a predetermined set time by the excitation of the timer 30T described above, forming a self-holding circuit, and the contact 30a 2 is turned on to excite the timer 40T. Due to the excitation of this timer 40T, the normally closed contact 40b is opened after a predetermined set time.
Even if the contact 22a2 remains closed due to an OFF state or a faulty disconnector, the excitation coil 14A of the current relay is demagnetized, the seal-in circuit is released, and the seal-in current continues to flow through the current limiting resistor R. Never. Therefore, there is no need to increase the capacity of the current limiting resistor R or take special measures against temperature rise.
なお、上記実施例では２つのタイマ３０Ｔ，４
０Ｔを使用して、しや断器不良等の場合にシール
イン回路を自動的に解除するように構成したが、
シールイン回路の解除に必要なタイマ出力を発生
するものであればその個数及び内部構成等を問わ
ない。 Note that in the above embodiment, two timers 30T and 4
Using 0T, the seal-in circuit was configured to be automatically released in the event of a faulty circuit breaker, etc.
As long as it generates the timer output necessary for canceling the seal-in circuit, the number and internal configuration thereof are not limited.
本考案は以上のようであり、しや断器不良等に
よりシールイン回路の限流抵抗にシールイン電流
が流れ続けようとした時、タイマ手段により所定
時間後にシールイン回路を自動的に解除するよう
にしたので、限流抵抗の容量を大きくする必要は
なく、閉鎖型盤内に限流抵抗を収納する場合にも
温度上昇に対する考慮がいらないので高実装密度
の盤構成を容易に実現できる。 The present invention is as described above, and when the seal-in current attempts to continue flowing through the current limiting resistor of the seal-in circuit due to a faulty circuit breaker, etc., the seal-in circuit is automatically released after a predetermined time by means of a timer. Therefore, there is no need to increase the capacity of the current limiting resistor, and even when the current limiting resistor is housed in a closed board, there is no need to consider temperature rise, so a board configuration with high packaging density can be easily realized.
第１図は本考案に係るシールイン解除用タイマ
回路の一実施例を示す回路図である。
１０ａ……主検出リレーの接点、１２ａ……事
故検出リレーの接点、１４Ａ……電流リレーの励
磁コイル、１４a1〜１４a3……励磁コイル１４Ａ
のリレー常開接点、２０……しや断器に付設され
た回路部分、２０Ａ……トリツプコイル、２２a1
〜２２a3……しや断器接点に連動したリレー常開
接点、３０Ｔ……タイマ、３０a1，３０a2……タ
イマ３０Ｔのリレー接点、４０Ｔ……タイマ、４
０ｂ……タイマ４０Ｔのリレー常閉接点、Ｒ……
限流抵抗。
FIG. 1 is a circuit diagram showing an embodiment of a seal-in release timer circuit according to the present invention. 10a...Contact of main detection relay, 12a...Contact of accident detection relay, 14A...Excitation coil of current relay, 14a1 to 14a3 ...Excitation coil 14A
Relay normally open contact, 20...Circuit part attached to the breaker, 20A...Trip coil, 22a 1
~22a 3 ... Relay normally open contact linked to the breaker contact, 30T ... Timer, 30a 1 , 30a 2 ... Relay contact of timer 30T, 40T ... Timer, 4
0b...Relay normally closed contact of timer 40T, R...
Current limiting resistor.
Claims (1)
この保護リレーの動作によりシールイン回路を形
成した後、しや断器等の開閉器をトリツプして、
この開閉器の接点の解放動作により前記シールイ
ン回路を解除するようにしたものにおいて、前記
シールイン回路形成と共に起動し前記開閉器の動
作時間より充分長い時限を有するタイマ手段を備
え、前記開閉器動作不良時等に前記タイマ手段の
出力により前記シールイン回路を自動的に解除す
るように構成したことを特徴とするシールイン解
除用タイマ回路。 Detect accidents in the power system using protective relays,
After forming a seal-in circuit through the operation of this protective relay, a switch such as a circuit breaker is tripped.
The seal-in circuit is released by the release operation of the contact of the switch, and the switch includes a timer means that starts when the seal-in circuit is formed and has a time limit sufficiently longer than the operating time of the switch, A timer circuit for canceling seal-in, characterized in that the seal-in circuit is automatically canceled by the output of the timer means in the event of a malfunction or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP461183U JPS59110919U (en) | 1983-01-17 | 1983-01-17 | Timer circuit for seal-in release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP461183U JPS59110919U (en) | 1983-01-17 | 1983-01-17 | Timer circuit for seal-in release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59110919U JPS59110919U (en) | 1984-07-26 |
| JPH023232Y2 true JPH023232Y2 (en) | 1990-01-25 |
Family
ID=30136206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP461183U Granted JPS59110919U (en) | 1983-01-17 | 1983-01-17 | Timer circuit for seal-in release |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59110919U (en) |
-
1983
- 1983-01-17 JP JP461183U patent/JPS59110919U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59110919U (en) | 1984-07-26 |
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