JPS5827739B2 - Multifunctional protective relay - Google Patents
Multifunctional protective relayInfo
- Publication number
- JPS5827739B2 JPS5827739B2 JP53035872A JP3587278A JPS5827739B2 JP S5827739 B2 JPS5827739 B2 JP S5827739B2 JP 53035872 A JP53035872 A JP 53035872A JP 3587278 A JP3587278 A JP 3587278A JP S5827739 B2 JPS5827739 B2 JP S5827739B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detection
- detection circuit
- ground
- capacitor
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
【発明の詳細な説明】
本発明は釈放リレーとコンデンサとを直列接続したもの
を適度なインピーダンスを有する電源アース間に接続し
、釈放リレーはコンデンサの充電電流では動作せず放電
電流によって動作するようにし、同種又は異種の複数個
の検知回路の出力を電源アース間に接続し、検知入力に
より検知回路の出力インピーダンスが低くなって電源ア
ース間を短絡する如くしたことを特徴とする多機能保護
継電器に係るものである。[Detailed Description of the Invention] The present invention connects a release relay and a capacitor connected in series between a power source and ground having an appropriate impedance, and the release relay is operated not by the charging current of the capacitor but by the discharging current. A multifunctional protective relay characterized in that the outputs of a plurality of detection circuits of the same type or different types are connected between the power supply ground and the detection input lowers the output impedance of the detection circuit to short-circuit the power supply ground. This is related to.
本発明の目的とするところは、各検知回路の線路を共用
し得るようにし、各種検知回路を同一構成で接続し得る
ようにし、しかも、インピーダンスマツチングを考慮す
る必要がない上、出力回路を不要とし簡単な構成とする
ことにある。It is an object of the present invention to enable the lines of each detection circuit to be shared, to enable various detection circuits to be connected with the same configuration, and to eliminate the need to consider impedance matching. The purpose is to eliminate the need for a simple configuration.
従来、多機能保護継電器として第１図に示すものがある
。Conventionally, there is a multifunctional protective relay shown in FIG.
第１図において、１は電流整定回路で、電流トランスＣ
Ｔの出力により動作し、過電流検知回路２、欠相検知回
路３を動作させる。In Fig. 1, 1 is a current setting circuit, and a current transformer C
It is activated by the output of T, and operates the overcurrent detection circuit 2 and the open phase detection circuit 3.
４は逆相検知回路であり、その出力は過電流検知回路２
、欠相検知回路３の出力とともにＯＲ回路５に入れ、Ｏ
Ｒ，回路の出力により出力回路６を動作させてリレーｎ
ｙを動作させていた。4 is a negative phase detection circuit, the output of which is the overcurrent detection circuit 2.
, is input to the OR circuit 5 together with the output of the open phase detection circuit 3, and O
R, the output circuit 6 is operated by the output of the circuit, and the relay n
I was running y.
７は定電圧回路である。7 is a constant voltage circuit.
このものにあっては、ＯＲ回路５の入力におけるインピ
ーダンスマツチングが困難で、しかも有接点検知回路等
の混用ができず、出力回路が必要で回路構成が複雑であ
るという欠点を有していた。This circuit has the drawbacks that impedance matching at the input of the OR circuit 5 is difficult, and furthermore, a contact detection circuit etc. cannot be used together, an output circuit is required, and the circuit configuration is complicated. .
本発明はかかる点に鑑みてなされたもので、以下実施例
により詳細に説明する。The present invention has been made in view of this point, and will be explained in detail below with reference to Examples.
第２図において、８は釈放リレーで、第３図のようにコ
ンデンサＣと直列接続して電源ＶｃｃとアースＥとの間
に接続する。In FIG. 2, reference numeral 8 denotes a release relay, which is connected in series with the capacitor C between the power supply Vcc and the earth E, as shown in FIG.
電源回路９に抵抗Ｒ１゜Ｒ２を直列接続しておき、適度
のインピーダンスをもたせておく。Resistors R1 and R2 are connected in series to the power supply circuit 9 to provide appropriate impedance.
釈放リレー８はコンデンサＣの充電時には不動作、放電
時に駆動されるように極性が定めである。The polarity of the release relay 8 is determined so that it is inactive when the capacitor C is being charged and is driven when it is being discharged.
１０，１１，１２はそれぞれ検知回路で、発光ダイオー
ド１３，１４．１５を直列接続して電源Ｖｃｃ、アース
Ｅ間に接続する。Reference numerals 10, 11, and 12 are detection circuits, respectively, in which light emitting diodes 13, 14, and 15 are connected in series and connected between a power supply Vcc and an earth E.
検知回路１０，１１．１２はそれぞれ検知人力Ｓｌ
＋ ８２ ｒ ８３により出力インピーダンスが低く
なるように動作し、電源Ｖｃｃ、アースＥ間を短絡する
ようにしておく。The detection circuits 10, 11.12 are each detected by human power Sl.
+82 r 83 operates so that the output impedance is low, and the power supply Vcc and earth E are short-circuited.
１６は釈放リレーの出力接点、■は電源入力である。16 is the output contact of the release relay, and ■ is the power input.
検知回路１０゜１１．１２は同種のものでも異種のもの
でもよく、その数は何個であってもよい。The detection circuits 10.11.12 may be of the same type or of different types, and the number thereof may be any number.
第３図は検知回路１０として過電流検知回路を接続した
もので、コンデンサＣの充電電圧および検知回路１０の
電源電圧はツェナーダイオードＤｚにより一定に維持さ
れる。In FIG. 3, an overcurrent detection circuit is connected as the detection circuit 10, and the charging voltage of the capacitor C and the power supply voltage of the detection circuit 10 are maintained constant by a Zener diode Dz.
今、過電流に対応した電圧が電流ｌ・ランスＣＴにより
検知され、抵抗Ｒ５、コンデンサＣ２で形成した積分回
路に加えられてコンデンサＣ２の電圧が一定レベルに達
すると、トランジスタＱがオンとなり、ＰＵＴがオンし
て電源Ｖｃｃ、アースＥ間を短絡し、発光ダイオード１
３が点灯する。Now, the voltage corresponding to the overcurrent is detected by the current l/lance CT and is applied to the integrating circuit formed by the resistor R5 and the capacitor C2. When the voltage of the capacitor C2 reaches a certain level, the transistor Q is turned on and the PUT turns on and short-circuits the power supply Vcc and ground E, and the light emitting diode 1
3 lights up.
この短絡によってＰＵＴに流れる電流に対し、電源から
供給されるのは抵抗Ｒ，，、Ｒ２により制限されるため
小さく、殆んどはコンデンサＣの放電電流による。Compared to the current flowing through the PUT due to this short circuit, the current supplied from the power source is limited by the resistors R, .
この放電電流により釈放リレー８が動作し、出力接点１
６を切替える。This discharge current operates the release relay 8, and the output contact 1
Switch 6.
釈放リレー８は第４図のようにリレーＲｙに並列にダイ
オードＤを接続しておき、電流１１では動作せず、電流
ｉ２によって動作するようにしたものを使用してもよく
、又、第５図のようにフォトカプラ、フォトサイリスク
、フォトトライアック等の光変換素子１７を使用しても
よい。The release relay 8 may be one in which a diode D is connected in parallel to the relay Ry as shown in FIG. As shown in the figure, a photoconversion element 17 such as a photocoupler, photothyrist, or phototriac may be used.
第６図は検知回路１１として漏電検知回路を接続すると
ともに、更に接点構成による検知回路１２としてバイメ
タル１８を使用したサーモスタットを接続したものであ
る。In FIG. 6, an earth leakage detection circuit is connected as a detection circuit 11, and a thermostat using a bimetal 18 is further connected as a detection circuit 12 having a contact structure.
このように、検知回路としては電源ＶｃｃアースＥ間を
短絡するものであればどのような検知回路でもよく、同
一のものの検知回路によるＯ ｉ（構成又は漏電、過電
流、欠相、逆相等異種の検知回路のＯＲ構成、あるいは
温度、圧力、変位等の有接点センサーとの共用も可能で
ある。In this way, any detection circuit may be used as a detection circuit as long as it short-circuits between the power supply Vcc and the ground E. It is also possible to use an OR configuration of the detection circuit, or to share it with a contact sensor for temperature, pressure, displacement, etc.
又、複数個の検知回路内、どの検知回路が作動したかは
検知回路に直列接続した発光ダイオードにより表示でき
、先に信号が入った回路が動作すると、他の回路は電源
電圧低−ドにより動作が停＋ヒするため、優先回路とし
て働く、。In addition, which detection circuit among multiple detection circuits is activated can be indicated by a light emitting diode connected in series with the detection circuit, and when the circuit that receives the signal first operates, the other circuits will be activated due to the low power supply voltage. Since the operation stops, it works as a priority circuit.
斜上のように本発明は、釈放す１／−とコンデンサとを
直列接続したものを適度なインピーダンスを有する電源
アース間に接続し、釈放リレーはコンデンサの放電電流
によって動作するようにしたから、電源アース間を申−
に短絡すればコンデンサの放電電流によって釈放リレー
が動作するようになっており、さらに同種又は異種の複
数個の検知回路の出力を電源アース間に接続し、検知入
力により検知回路の出力インピーダンスが低くなって電
源アース間を短絡するようにしたから、複数個の検知回
路の出力を並列接続可能にしているので、複数個の検知
回路の各出力線路を共通線路とすることができ、またリ
レー接点、半導体スイッチング素子などを用いた検知回
路であってもインピーダンスマツチングなどを考慮する
ことなくそのまま並列接続でき、構成が簡単になるとい
う効果を奏するものである。As shown above, in the present invention, a series connection of a release 1/- and a capacitor is connected between a power source and ground having an appropriate impedance, and the release relay is operated by the discharge current of the capacitor. Connect the power supply to ground.
When short-circuited, the release relay is activated by the discharge current of the capacitor.Furthermore, the outputs of multiple detection circuits of the same or different types are connected between the power supply ground, and the output impedance of the detection circuit is low due to the detection input. Since the power supply and ground are short-circuited, the outputs of multiple detection circuits can be connected in parallel, so each output line of multiple detection circuits can be used as a common line, and the relay contact Even detection circuits using semiconductor switching elements or the like can be directly connected in parallel without considering impedance matching, etc., resulting in a simple configuration.
第１図は従来の多機能保護継電器のブ「コック回路図、
第２図は本発明多機能保護継電器のブロック回路図、第
３図は本発明の一実施例の具体回路図、第４図および第
５図はそれぞれ同上の釈放リレーの実施例の回路図、第
６図は本発明の他の実施例の具体回路図である。
８・・・・・・釈放リレー １０・・・・・・検知回路
、１１・・・・・・検知回路、１２・・・・・・検知−
１路、Ｃ・・・・・・コンデンサ、Ｖｃｃ・・・・・・
電源、Ｅ・・・・・・アース、Ｓ、・・・・・・検知入
力、Ｓ２・・・・・・検知入力、Ｓ３・・・・・・検知
入力。Figure 1 shows the block circuit diagram of a conventional multi-function protective relay.
FIG. 2 is a block circuit diagram of the multifunctional protective relay of the present invention, FIG. 3 is a specific circuit diagram of an embodiment of the present invention, and FIGS. 4 and 5 are circuit diagrams of an embodiment of the release relay described above, respectively. FIG. 6 is a specific circuit diagram of another embodiment of the present invention. 8...Release relay 10...Detection circuit, 11...Detection circuit, 12...Detection-
1 path, C... Capacitor, Vcc...
Power supply, E...earth, S...detection input, S2...detection input, S3...detection input.
Claims (1)
度なインピーダンスを有する電源アース間に接続し、釈
放リレーはコンデンサの充電電流では動作せず放電電流
によって動作するようにし、同種又は異種の複数個の検
知回路の出力を電源アース間に接続し、検知入力により
検知回路の出力インピーダンスが低くなって電源アース
間を短絡する如くしたことを特徴とする多機能保護継電
器。1. A release relay and a capacitor connected in series are connected between a power source and ground with appropriate impedance, and the release relay is operated not by the charging current of the capacitor but by the discharging current. A multifunctional protective relay characterized in that the output of the detection circuit is connected between the power source and the ground, and the output impedance of the detection circuit is lowered by the detection input, thereby short-circuiting the power source and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53035872A JPS5827739B2 (en) | 1978-03-27 | 1978-03-27 | Multifunctional protective relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53035872A JPS5827739B2 (en) | 1978-03-27 | 1978-03-27 | Multifunctional protective relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54127544A JPS54127544A (en) | 1979-10-03 |
| JPS5827739B2 true JPS5827739B2 (en) | 1983-06-11 |
Family
ID=12454077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53035872A Expired JPS5827739B2 (en) | 1978-03-27 | 1978-03-27 | Multifunctional protective relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827739B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192384A (en) * | 1987-10-02 | 1989-04-11 | Hitachi Ltd | Plasma treating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317948A (en) * | 1976-08-04 | 1978-02-18 | Fuji Electric Co Ltd | Protective circuit for overcurrent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5287921U (en) * | 1975-12-25 | 1977-06-30 |
-
1978
- 1978-03-27 JP JP53035872A patent/JPS5827739B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317948A (en) * | 1976-08-04 | 1978-02-18 | Fuji Electric Co Ltd | Protective circuit for overcurrent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192384A (en) * | 1987-10-02 | 1989-04-11 | Hitachi Ltd | Plasma treating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54127544A (en) | 1979-10-03 |
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