JPH0311051B2 - - Google Patents
Info
- Publication number
- JPH0311051B2 JPH0311051B2 JP60237506A JP23750685A JPH0311051B2 JP H0311051 B2 JPH0311051 B2 JP H0311051B2 JP 60237506 A JP60237506 A JP 60237506A JP 23750685 A JP23750685 A JP 23750685A JP H0311051 B2 JPH0311051 B2 JP H0311051B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- closing
- spring
- gate
- circuit breaker
- 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
- 238000004146 energy storage Methods 0.000 claims description 10
- 230000005669 field effect Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Keying Circuit Devices (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は電動ばね操作方式の遮断器の操作を電
界効果トランジスタを用いて行う遮断器の操作回
路に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a circuit breaker operating circuit that operates an electric spring operated circuit breaker using a field effect transistor.
電動ばね操作方式の遮断器における投入コイル
や蓄勢ばねの操作には、従来電磁リレーが多く用
いられているが、投入コイルやばね蓄勢用電動機
の電流が大きく、且つ操作頻度が高く、さらに遮
断器の主回路電流による強磁界の影響や遮断器開
閉時の機械的な衝撃を受けるので、電磁リレーと
しては頑丈で大形のものが必要になり、このため
価格、寸法、保守などの面で問題があつた。
Conventionally, electromagnetic relays are often used to operate closing coils and energy storage springs in electric spring-operated circuit breakers, but the current of the closing coil and spring energy storage motor is large, the operation frequency is high, and Because it is affected by the strong magnetic field caused by the circuit breaker's main circuit current and by mechanical shock when the circuit breaker opens and closes, it is necessary for electromagnetic relays to be sturdy and large. There was a problem.
本発明は、投入コイルおよびばね蓄勢用電動機
の入切に電界効果トランジスタ（以下FETと呼
ぶ）を用いると共に、両方のゲート回路の間に安
全動作のためのインタロツクを設けた信頼性の高
い無接点式の遮断機操作回路を提供することを目
的としている。
The present invention uses field effect transistors (hereinafter referred to as FETs) to turn on and off the closing coil and spring storage motor, and provides a highly reliable transistor with an interlock between both gate circuits for safe operation. The purpose is to provide a contact type circuit breaker operating circuit.
本発明は、電動ばね操作方式の遮断器の投入コ
イルおよびばね蓄勢用電動機にそれぞれ直列に接
続された２つの電界効果トランジスタと、それぞ
れ投入指令および操作ばね放勢に応じて一定期間
だけ上記それぞれの電界効果トランジスタを導通
させる２組のゲート回路と、上記ばね蓄勢用ゲー
ト回路のオン期間中は投入用ゲート回路を強制的
にオフに保持するインタロツク回路を備え、これ
によつて投入のポンピング動作が防止されると共
に、操作ばねの蓄勢が完了するまでは投入コイル
が導通せず、従つて不完全な蓄勢状態では投入動
作が行われない信頼性の高い安価でコンパクトな
電子回路による遮断器の操作回路である。
The present invention provides two field effect transistors each connected in series to a closing coil and a spring storage electric motor of an electric spring operation type circuit breaker, and each of the above for a certain period of time in response to a closing command and an operation spring release. The device includes two sets of gate circuits that conduct the field effect transistors, and an interlock circuit that forcibly holds the closing gate circuit OFF while the spring energy storage gate circuit is on. Operation is prevented, and the closing coil is not conductive until the operating spring is fully charged, so the closing operation is not performed in an incompletely charged state.By means of a reliable, inexpensive, and compact electronic circuit. This is a circuit breaker operating circuit.
本発明の一実施例を第１図に示す。第２図はそ
の動作を示す各部信号のタイムチヤートである。
An embodiment of the present invention is shown in FIG. FIG. 2 is a time chart of various signals showing the operation.
第１図において、１は遮断器を投入したいとき
閉じる投入用接点、２は遮断器が開のとき閉じる
補助接点、３は投入コイル、４は投入コイルのサ
ージ抑御用ダイオード、５−１は投入コイル通電
用FET、６−１はサージ吸収素子、７−１は
FET５−１のゲート回路であり、ゲート回路７
−１の出力ｇは投入用接点１が閉じてから一定期
間T1だけオンとなり、その間FET５−１をオン
にして投入コイル３を通電させ、蓄勢ばねを介し
て遮断器の投入を行う。なおＰ−Ｎは操作回路用
直流電源、P′−Ｎはゲート回路用直流電源であ
る。 In Figure 1, 1 is a closing contact that closes when you want to close the circuit breaker, 2 is an auxiliary contact that closes when the breaker is open, 3 is a closing coil, 4 is a surge suppression diode for the closing coil, and 5-1 is a closing contact. FET for coil current, 6-1 is surge absorption element, 7-1 is
This is the gate circuit of FET5-1, and gate circuit 7
The output g of -1 is turned on for a certain period T1 after the closing contact 1 is closed, and during that time, the FET 5-1 is turned on, the closing coil 3 is energized, and the circuit breaker is closed via the energy storage spring. Note that P-N is a DC power supply for the operation circuit, and P'-N is a DC power supply for the gate circuit.
第２図はゲート回路７−１内の各部信号ａ〜ｇ
の動作波形を示すタイムチヤートであり、投入用
接点が１が閉じると信号ａは直ちに“１”レベル
となり、ゲート回路７−１の回路定数で決まる一
定期間T1だけ信号ｇが“１”レベルとなること
を示している。 FIG. 2 shows various signals a to g in the gate circuit 7-1.
This is a time chart showing the operation waveform of 1. When the closing contact 1 closes, the signal a becomes the "1" level immediately, and the signal g remains at the " 1 " level for a certain period T1 determined by the circuit constant of the gate circuit 7-1. It shows that.
また、８−１，８−２は遮断器の操作用蓄勢ば
ねが放勢しているとき閉じる接点であり、接点８
−１が閉じるとゲート回路７−２を動作させ、ば
ね蓄勢用電動機９の通電用FET５−２を一定期
間T2だけオンにして電動機９を駆動し、操作用
ばねの蓄勢を行なう。 Further, 8-1 and 8-2 are contacts that close when the operating energy storage spring of the circuit breaker is released;
-1 is closed, the gate circuit 7-2 is operated, and the energizing FET 5-2 of the spring energy accumulating electric motor 9 is turned on for a fixed period T2 to drive the electric motor 9 and accumulating the operating spring.
なお、ゲート回路７−２は上記投入コイル通電
用FET５−１のゲート回路７−１と同じであり、
但しその回路定数は、接点８−１が閉じてから信
号ｇが“１”である期間がT2になるように選定
されている。また、１０はばねの蓄勢が完了して
接点８−２が開いたとき電動機９に並列に接続さ
れた電動機９に制動をかけるための制動抵抗であ
る。 Note that the gate circuit 7-2 is the same as the gate circuit 7-1 of the above-mentioned closing coil energizing FET 5-1,
However, the circuit constants are selected so that the period during which the signal g is "1" after the contact 8-1 closes is T2 . Moreover, 10 is a braking resistor for applying braking to the electric motor 9 connected in parallel to the electric motor 9 when the spring energy storage is completed and the contact point 8-2 is opened.
さらにゲート回路７−１のｇ点と７−２のｂ点
との間にはインタロツク用ダイオード１１が接続
されており、ばねの蓄勢中はゲート回路７−２の
信号ｂは“０”であり、ゲート回路７−１の信号
ｇはダイオード１１によつて強制的にゲート回路
７−２の信号ｂと同じ“０”に保持されているの
で、投入用接点１を閉じてもゲート回路７−１の
信号ｇは“１”にならず、従つてばねの蓄勢が完
了するまでは投入動作が行われず、これによつて
不完全な蓄勢状態で投入動作が行われることを防
止している。 Furthermore, an interlock diode 11 is connected between the point g of the gate circuit 7-1 and the point b of the gate circuit 7-2, and the signal b of the gate circuit 7-2 is "0" while the spring is storing energy. Since the signal g of the gate circuit 7-1 is forcibly held at "0", which is the same as the signal b of the gate circuit 7-2, by the diode 11, even if the closing contact 1 is closed, the gate circuit 7 The signal g at -1 does not become "1", so the closing operation is not performed until the spring is fully charged, thereby preventing the closing operation from being performed in an incompletely charged state. ing.
また、投入用接点１を閉じて投入動作を行つて
いるとき引外し動作が行われて遮断器が開路した
ときは、投入用接点１が閉じてからT1以上の時
間が経過するとFET５−１はオフになるので、
一たん投入用接点１を開いてから再度閉じないと
投入動作が行われず、従つて所謂ポンピング動作
が防止される。 In addition, if a tripping operation is performed and the circuit breaker is opened while closing the closing contact 1 and performing the closing operation, if a time of T 1 or more has elapsed since the closing contact 1 is closed, the FET5- is turned off, so
Unless the closing contact 1 is once opened and then closed again, the closing operation will not be performed, so that the so-called pumping operation is prevented.
以上説明したように本発明によれば、電動ばね
操作方式の遮断器のばね蓄勢用電動機および投入
コイルの入切に電子回路でゲート制御される電界
効果トランジスタを用いて無接点化すると共に、
ゲート回路の動作によつてポンピング動作を防止
し、さらに両方のゲート回路の間に設けたインタ
ロツク回路によつてばね蓄勢動作中に投入動作が
行われるのを防止し、これによつて電磁リレーを
用いない安価でコンパクトな信頼性の高い遮断器
の操作回路が実現できる。
As explained above, according to the present invention, a spring energy storage motor of an electric spring operated circuit breaker and a field effect transistor gate-controlled by an electronic circuit to turn on and off the closing coil are used to make the circuit breaker non-contact.
The operation of the gate circuit prevents the pumping operation, and the interlock circuit provided between both gate circuits prevents the closing operation from occurring during the spring storage operation, thereby causing the electromagnetic relay to It is possible to realize an inexpensive, compact, and highly reliable circuit breaker operation circuit that does not use circuit breaker.
第１図は本発明の一実施例を示す回路図、第２
図は第１図におけるゲート回路の動作を示す各部
信号のタイムチヤートである。
１……投入用接点、２……遮断器補助接点、３
……投入コイル、４，１１……ダイオード、５−
１，５−２……電界効果トランジスタ（FET）、
６−１，６−２……サージ吸収素子、７−１，７
−２……ゲート回路、８−１，８−２……ばね放
勢時閉接点、９……ばね蓄勢用電動機、１０……
制動抵抗器。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is a time chart of various signals showing the operation of the gate circuit in FIG. 1... Closing contact, 2... Circuit breaker auxiliary contact, 3
... Closing coil, 4, 11 ... Diode, 5-
1,5-2...field effect transistor (FET),
6-1, 6-2...Surge absorption element, 7-1, 7
-2...Gate circuit, 8-1, 8-2...Contact closed when spring is released, 9...Electric motor for spring energy storage, 10...
Braking resistor.
Claims (1)
びばね蓄勢用電動機にそれぞれ直列に接続された
２つの電界効果トランジスタと、それぞれ投入指
令および操作ばね放勢に応じて一定期間だけ上記
それぞれの電界効果トランジスタを導通させる２
組のゲート回路と、上記ばね蓄勢用ゲート回路の
オン期間中は投入用ゲート回路を強制的にオフに
保持するインタロツク回路を備えたことを特徴と
する遮断器の操作回路。1. Two field effect transistors connected in series to the closing coil and spring energy storage motor of an electric spring operated circuit breaker, respectively, and each of the above field effects for a certain period of time in response to the closing command and the release of the operating spring. Make the transistor conductive 2
1. An operating circuit for a circuit breaker, comprising: a set of gate circuits; and an interlock circuit for forcibly keeping the closing gate circuit OFF during the ON period of the spring energy storage gate circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23750685A JPS6298518A (en) | 1985-10-25 | 1985-10-25 | Operating circuit for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23750685A JPS6298518A (en) | 1985-10-25 | 1985-10-25 | Operating circuit for circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6298518A JPS6298518A (en) | 1987-05-08 |
| JPH0311051B2 true JPH0311051B2 (en) | 1991-02-15 |
Family
ID=17016326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23750685A Granted JPS6298518A (en) | 1985-10-25 | 1985-10-25 | Operating circuit for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6298518A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221524A (en) * | 1988-07-11 | 1990-01-24 | Toshiba Corp | Operating device of switch |
| JP2553720Y2 (en) * | 1991-05-01 | 1997-11-12 | 株式会社小松製作所 | Buckling prevention device for shield machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532358U (en) * | 1978-08-23 | 1980-03-01 |
-
1985
- 1985-10-25 JP JP23750685A patent/JPS6298518A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532358U (en) * | 1978-08-23 | 1980-03-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6298518A (en) | 1987-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |