JPH069546Y2 - Breaker - Google Patents
BreakerInfo
- Publication number
- JPH069546Y2 JPH069546Y2 JP1988112817U JP11281788U JPH069546Y2 JP H069546 Y2 JPH069546 Y2 JP H069546Y2 JP 1988112817 U JP1988112817 U JP 1988112817U JP 11281788 U JP11281788 U JP 11281788U JP H069546 Y2 JPH069546 Y2 JP H069546Y2
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- current transformer
- bidirectional diode
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、しゃ断器、特にその内部変流器の出力をそ
のまゝ取り出せるようにしたしゃ断器に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a circuit breaker, and more particularly to a circuit breaker capable of extracting the output of its internal current transformer.
［従来の技術］ 第２図は従来のしゃ断器を示す構成図であり、図におい
て１は電源と負荷（共に図示しない）の間に設けられた
電路、２はこの電路１に接続された変流器、３はこの変
流器２の両端間に接続された引外し回路、４はこの引外
し回路３に接続された引外しコイル、５は電路１に挿入
され、引外しコイル４によって引外される接点であり、
これら引外しコイル４と接点５が引外し機構を構成す
る。[Prior Art] FIG. 2 is a configuration diagram showing a conventional circuit breaker. In the figure, 1 is an electric circuit provided between a power source and a load (neither is shown), and 2 is a circuit connected to the electric circuit 1. The current transformer 3 is a trip circuit connected between both ends of the current transformer 2, 4 is a trip coil connected to the trip circuit 3, 5 is an electric circuit 1 and is tripped by the trip coil 4. Is the contact that is removed,
The trip coil 4 and the contact 5 form a trip mechanism.
更に、電路１に流れる電流を表示するために、しゃ断器
の外部に他の変流器６を設け、この変流器６にメータ例
えば電流計７を接続する。Further, another current transformer 6 is provided outside the breaker, and a meter, for example, an ammeter 7 is connected to the current transformer 6 in order to display the current flowing through the electric circuit 1.
従来のしゃ断器は上述したように構成されており、変流
器２が電路１に流れる電流を検出しかつその検出電流が
所定値を超えると、引外し回路３は検出電流に応じた時
限をもって出力を生じ、これにより引外しコイル４を励
磁する。その結果、接点５が引外されるので、電路１は
しゃ断される。この間、電路１に流れる電流は、しゃ断
器の外部の変流器６に接続された電流計７によって表示
される。The conventional circuit breaker is configured as described above, and when the current transformer 2 detects the current flowing in the electric circuit 1 and the detected current exceeds a predetermined value, the trip circuit 3 has a time limit according to the detected current. An output is produced, which excites the trip coil 4. As a result, the contact 5 is tripped, so that the electric path 1 is cut off. During this time, the current flowing through the circuit 1 is displayed by the ammeter 7 connected to the current transformer 6 outside the breaker.
［考案が解決しょうとする課題］ このように、従来のしゃ断器では、電路に流れる電流を
表示するために、しゃ断器の外部に他の変流器を設けな
ければならないという問題点があった。[Problems to be Solved by the Invention] As described above, the conventional circuit breaker has a problem that another current transformer must be provided outside the circuit breaker in order to display the current flowing through the circuit. .
この考案は、このような問題点を解決するためになされ
たもので、上述した他の変流器を不要にするしゃ断器を
得ることを目的とする。The present invention has been made in order to solve such a problem, and an object thereof is to obtain a circuit breaker that does not require the other current transformer described above.
［課題を解決するための手段］ この考案に係るしゃ断器は、変流器の一端と引外し回路
の一端との間に挿入された双方向性ダイオード、および
この双方向性ダイオードの両端から取り出されたメータ
接続用端子を設けたものである。[Means for Solving the Problems] A circuit breaker according to the present invention includes a bidirectional diode inserted between one end of a current transformer and one end of a trip circuit, and a bidirectional diode taken out from both ends of the bidirectional diode. The terminal for connecting the meter is provided.
［作用］ この考案では、しゃ断器の内部に設けた変流器の検出電
流を引外し回路へ供給すると共にメータ接続用端子に接
続されたメータへも供給する。[Operation] In this invention, the detection current of the current transformer provided inside the breaker is supplied to the trip circuit and also to the meter connected to the meter connection terminal.
［実施例］ 第１図はこの考案の一実施例を示す構成図であり、１〜
５および７は第２図に示したものと同じである。８は双
方向性ダイオードであって、しゃ断器の内部の変流器２
の一端と引外し回路３の一端との間に接続されている。
９はメータ接続用端子であって、双方向性ダイオード８
の両端から取り出されかつ図示のように電流計７が接続
されるようになっている。[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.
5 and 7 are the same as those shown in FIG. 8 is a bidirectional diode, which is a current transformer 2 inside the breaker.
Is connected to one end of the trip circuit 3.
Reference numeral 9 is a meter connection terminal, which is a bidirectional diode 8
Is connected to the ammeter 7 as shown in the drawing.
この考案では、電流計７がメータ接続用端子９に接続さ
れていない場合には、変流器２の検出電流は双方向性ダ
イオード８を通して引外し回路３へ供給される。そして
従来装置と同様に、検出電流が所定値を超えると引外し
回路は検出電流に応じた時限をもって出力を生じ、これ
により電路１をしゃ断器させる。In this invention, when the ammeter 7 is not connected to the meter connection terminal 9, the detected current of the current transformer 2 is supplied to the trip circuit 3 through the bidirectional diode 8. Then, like the conventional device, when the detected current exceeds a predetermined value, the trip circuit produces an output with a time limit corresponding to the detected current, thereby breaking the electric circuit 1.
また、電流計７がメータ接続用端子９に図示のように接
続されている場合には、電流計７の抵抗が双方向性ダイ
オード８の抵抗よりも極めて小さいので、変流器２の検
出電流は双方向性ダイオード８に流れず、殆ど全部一方
のメータ接続用端子９、電流計７および他方のメータ接
続用端子９を通って引外し回路３に流れ、これにより上
述したように電路１をしゃ断器させる。When the ammeter 7 is connected to the meter connection terminal 9 as shown in the figure, the resistance of the ammeter 7 is much smaller than the resistance of the bidirectional diode 8, so that the current detected by the current transformer 2 is reduced. Does not flow to the bidirectional diode 8, but almost entirely flows to the trip circuit 3 through one of the meter connection terminals 9, the ammeter 7 and the other meter connection terminal 9, thereby causing the electric circuit 1 to pass through as described above. Make the circuit breaker.
なお、メータ接続用端子９を設けただけで、双方向性ダ
イオード８がないと、電流計７が接続されていない場合
に、メータ接続用端子９間をショートしてやらなければ
ならないが、双方向性ダイオード８があれば、わざわざ
ショートさせてやる必要はない。If only the meter connection terminal 9 is provided and the bidirectional diode 8 is not provided, it is necessary to short the meter connection terminals 9 when the ammeter 7 is not connected. With the diode 8, there is no need to purposely short it.
［考案の効果］ この考案は、以上詳述した通り、変流器の一端と引外し
回路の一端との間に挿入された双方向性ダイオード、お
よびこの双方向性ダイオードの両端から取り出されたメ
ータ接続用端子を設けたので、電路に流れる電流を表示
するためにしゃ断器の外部に他の変流器および電流計を
設ける必要がなく、またしゃ断器の内部の変流器の検出
電流をそのまゝ電流計に流せるので、しゃ断器外部の変
流器が完全に不要となる効果を奏する。[Effects of the Invention] As described in detail above, the invention is derived from a bidirectional diode inserted between one end of a current transformer and one end of a trip circuit and both ends of this bidirectional diode. Since the meter connection terminal is provided, it is not necessary to install another current transformer and ammeter outside the circuit breaker to display the current flowing in the circuit, and the current detected by the current transformer inside the circuit breaker can be displayed. Since the current can be passed through the ammeter, there is an effect that the current transformer outside the breaker is completely unnecessary.
第１図はこの考案の一実施例を示す構成図、第２図は従
来のしゃ断器を示す構成図である。 １は電路、２は変流器、３は引外し回路、４は引外しコ
イル、５は接点、７は電流計、８は双方向性ダイオー
ド、９はメータ接続用端子である。 なお、各図中、同一符号は同一又は相当部分を示す。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional breaker. 1 is an electric circuit, 2 is a current transformer, 3 is a trip circuit, 4 is a trip coil, 5 is a contact, 7 is an ammeter, 8 is a bidirectional diode, and 9 is a meter connection terminal. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
路に流れる電流を検出する変流器と、この変流器の一端
に接続された双方向性ダイオードと、この双方向性ダイ
オードおよび前記変流器の他端間に接続され、前記変流
器の検出電流が所定値を超えると前記検出電流に応じた
時限をもって出力を生じる引外し回路と、この引外し回
路に接続され、その出力によって作動される時に前記電
路をしゃ断する引外し機構と、前記双方向性ダイオード
の両端から取り出されかつメータが接続されるべき端子
とを備えたことを特徴とするしゃ断器。1. A current transformer connected to an electric path between a power source and a load to detect a current flowing in the electric path, a bidirectional diode connected to one end of the current transformer, and the bidirectional diode. And a trip circuit that is connected between the other ends of the current transformers and that outputs an output with a time limit according to the detection current when the detection current of the current transformer exceeds a predetermined value, and is connected to the trip circuit. A circuit breaker comprising: a tripping mechanism that cuts off the electric path when actuated by its output; and terminals that are taken out from both ends of the bidirectional diode and to which a meter is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988112817U JPH069546Y2 (en) | 1988-08-30 | 1988-08-30 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988112817U JPH069546Y2 (en) | 1988-08-30 | 1988-08-30 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0237534U JPH0237534U (en) | 1990-03-13 |
| JPH069546Y2 true JPH069546Y2 (en) | 1994-03-09 |
Family
ID=31352101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988112817U Expired - Lifetime JPH069546Y2 (en) | 1988-08-30 | 1988-08-30 | Breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069546Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002354614A (en) * | 2001-05-29 | 2002-12-06 | Mitsubishi Electric Corp | Load protective device and control center or distribution board using the device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59201625A (en) * | 1983-04-28 | 1984-11-15 | 松下電工株式会社 | Protecting device |
-
1988
- 1988-08-30 JP JP1988112817U patent/JPH069546Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0237534U (en) | 1990-03-13 |
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