JPS63117615A - Overcurrent relay - Google Patents
Overcurrent relayInfo
- Publication number
- JPS63117615A JPS63117615A JP26321386A JP26321386A JPS63117615A JP S63117615 A JPS63117615 A JP S63117615A JP 26321386 A JP26321386 A JP 26321386A JP 26321386 A JP26321386 A JP 26321386A JP S63117615 A JPS63117615 A JP S63117615A
- Authority
- JP
- Japan
- Prior art keywords
- output
- relay
- overcurrent
- rectifier circuit
- input
- 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.)
- Granted
Links
- 238000009499 grossing Methods 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- 235000014676 Phragmites communis Nutrition 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は交流過電流の検出を行なう過電流継電器に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an overcurrent relay for detecting alternating current overcurrent.
第２図は、従来の過電流継電器を示す回路図であり、図
において１は被測定量源としての交流電源、２はこの交
流電源１の入力を導入する入力端子、３は交流入力量に
比例した出力を得る入力変成器、１４はこの出力をコン
デンサ及び可変抵抗により三相のベクトル量に変換する
移相回路、１５はこの三相のベクトル量を直流に変換す
る三相全波整流回路、７はこの直流量で駆動される動作
コイルＯＣと他の直流源の直流量で抑制される抑制コイ
ルＲＣを持つ水銀接点形の有極継電器、７ａはこのａ接
点、８はこのａ接点７ａを閉成することにより駆動され
る大容量接点形のリードリレー、８ａはこのリードリレ
ー８のａ接点、１３はこのａ接点８ａにより過電流状態
を出力する出力端子、６は有極継電器７の動作値を調整
する可変抵抗、９は直流電源、１０はこの直流電源９の
入力端子、１１は抵抗器、１２はゼナーダイオードであ
る。FIG. 2 is a circuit diagram showing a conventional overcurrent relay. In the figure, 1 is an AC power source as a source of the measured quantity, 2 is an input terminal for introducing the input of this AC power supply 1, and 3 is an AC input terminal. An input transformer that obtains a proportional output, 14 a phase shift circuit that converts this output into a three-phase vector quantity using a capacitor and a variable resistor, and 15 a three-phase full-wave rectifier circuit that converts this three-phase vector quantity into direct current. , 7 is a mercury contact type polarized relay having an operating coil OC driven by this DC amount and a suppression coil RC suppressed by the DC amount of another DC source, 7a is this a contact, and 8 is this a contact 7a. 8a is the a-contact of this reed relay 8, 13 is an output terminal that outputs an overcurrent state by this a-contact 8a, and 6 is the output terminal of the polarized relay 7. A variable resistor for adjusting an operating value, 9 a DC power supply, 10 an input terminal of this DC power supply 9, 11 a resistor, and 12 a Zener diode.
次に動作について説明する。入力変成器３によって得ら
れた交流入力量に比例した出力を移相回路１４により三
相のベクトル量に変換し、これを三相全波整流回路１５
を介することにより直流に近似した脈流出力を得る。こ
の出力を可変抵抗６を介して水銀接点形の有極継電器７
の動作コイルＯＣに印加してこの有極継電器７を動作さ
せ、そのａ接点７ａを閉成させることにより、大容量接
点形リードリレー８を駆動する。そして、そのａ接点８
ａの閉成信号を出力端子１３から得ることで交流電源１
の交流入力に関するスカラ量を検出する。Next, the operation will be explained. The output proportional to the AC input amount obtained by the input transformer 3 is converted into a three-phase vector amount by the phase shift circuit 14, and this is converted into a three-phase vector amount by the three-phase full-wave rectifier circuit 15.
A pulsating current similar to direct current is obtained by passing through the pulsating current. This output is passed through a variable resistor 6 to a mercury contact type polarized relay 7.
The large capacity contact type reed relay 8 is driven by applying the voltage to the operating coil OC to operate the polarized relay 7 and closing the a contact 7a thereof. And that a contact 8
By obtaining the closing signal of a from the output terminal 13, the AC power supply 1
Detects the scalar quantity related to the AC input.
ここで、水銀接点形の有極継電器７の抑制コイルＲＣは
高復帰率を得るためのもので、別途直流電源９を制御用
として入力端子１０より導入し、抵抗１１とゼナーダイ
オード１２を介して抑制コイルを常時励磁することによ
り抑制力を得ている。Here, the suppression coil RC of the mercury contact type polarized relay 7 is for obtaining a high recovery rate, and a DC power supply 9 is separately introduced from the input terminal 10 for control, and the suppression coil RC is connected via a resistor 11 and a zener diode 12. The suppressing force is obtained by constantly energizing the suppressing coil.
また、入力変成器３からの出力を整流するに当たって、
三相全波整流回路７を用いることとしたのは、できるだ
け脈流分を減少させようとしたためである。Also, in rectifying the output from the input transformer 3,
The reason for using the three-phase full-wave rectifier circuit 7 is to reduce the ripple current as much as possible.
従来の過電流継電器は１以上のように構成されているの
で５人力変成器の出力を三相のベクトル量に変換する移
相回路、及びその出力を直流に変換する三相全波整流回
路のために、高耐圧のコンデンサ、移相調整用抵抗及び
６個のダイオードを用いなければならず、コスト的な面
で不利になるという問題点がある。Conventional overcurrent relays are configured with one or more components, including a phase shift circuit that converts the output of a five-power transformer into a three-phase vector quantity, and a three-phase full-wave rectifier circuit that converts the output into direct current. Therefore, a high voltage capacitor, a phase shift adjustment resistor, and six diodes must be used, which is disadvantageous in terms of cost.
また、有極継電器の動作入力が最小動作値の１０倍を越
える領域では、動作速度が速すぎ、又復帰する場合には
、復帰速度が遅すぎて所望の要求性能を満足できないな
どの問題点があったにの発明は上記のような問題点を解
消するためになされたもので、有極継電器の動作入力が
最小動作値の１０倍を越えても、動作速度及び復帰速度
に対する要求値を満足させることができ、また、部品点
数及び調整箇所の少ない安価な過電流継電器を得ことを
目的とする。In addition, when the operation input of a polarized relay exceeds 10 times the minimum operation value, the operation speed is too fast, and when it returns, the return speed is too slow to meet the desired performance requirements. The invention was made to solve the above problems, and even if the operating input of a polarized relay exceeds 10 times the minimum operating value, the required values for operating speed and return speed can be met. It is an object of the present invention to provide an inexpensive overcurrent relay that satisfies the above requirements and requires fewer parts and adjustment points.
この発明に係る過電流継電器は、変成器の出力を整流す
る整流回路として単相全波整流回路を用い、この出力を
平滑回路を介して有極継電器に入力させるようにしたも
のである。The overcurrent relay according to the present invention uses a single-phase full-wave rectifier circuit as a rectifier circuit that rectifies the output of a transformer, and inputs this output to a polarized relay via a smoothing circuit.
この発明における単相全波整流回路は三相全波整流回路
の場合よりも出力が小さくなるために、有極継電器の動
作入力が大きな領域では、動作コイルの動作速度を遅く
し、抑制コイルが復帰する場合の復帰速度を速くする。Since the output of the single-phase full-wave rectifier circuit in this invention is smaller than that of the three-phase full-wave rectifier circuit, in the region where the operating input of the polarized relay is large, the operating speed of the operating coil is slowed down, and the suppression coil is Increase the return speed when returning.
そして、平滑回路は単相全波整流回路の出力の脈流分を
平滑化する。The smoothing circuit smoothes the pulsating current component of the output of the single-phase full-wave rectifier circuit.
また、この単相全波整流回路は少ない数のダイオードで
構成することができ、平滑回路は、高耐圧のコンデンサ
や、調整を要する可変抵抗を用いる必要がない。Further, this single-phase full-wave rectifier circuit can be constructed with a small number of diodes, and the smoothing circuit does not need to use a high-voltage capacitor or a variable resistor that requires adjustment.
以下、この発明の一実施例を図について説明する。第１
図において、１〜３及び６〜１３については第２図のも
のと同一であるため、その説明を省略する。４は単相全
波整流回路、５は平滑回路。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, since 1 to 3 and 6 to 13 are the same as those in FIG. 2, their explanation will be omitted. 4 is a single-phase full-wave rectifier circuit, and 5 is a smoothing circuit.
６は有極継電器７の動作コイルＯＣの動作点を調整する
ための可変抵抗である。6 is a variable resistor for adjusting the operating point of the operating coil OC of the polarized relay 7.
次に動作について説明する。入力変成器３によって得ら
れた交流入力量に比例した出力を可変抵抗６を介して単
相全波整流回路４により整流し、これを平滑回路５を介
して直流に近似した脈流出力を得る。Next, the operation will be explained. The output proportional to the amount of AC input obtained by the input transformer 3 is rectified by a single-phase full-wave rectifier circuit 4 via a variable resistor 6, and then passed through a smoothing circuit 5 to obtain a pulsating output that approximates direct current. .
この出力を水銀接点形の有極継電器７の動作コイルＯＣ
に印加してこの有極継電器７を動作させ、そのａ接点７
ａを閉成させることにより大容量接点形のリードリレー
８を駆動する。そして、そのａ接点８ａの閉成信号を出
力端子１３から得ることで交流入力のスカラ量を検出す
る。水銀接点形の有極継電器７の抑制コイルＲＣは高復
帰率を得るためのもので、別途直流電源９を制御用とし
て入力端子１０より直流入力を導入し、抵抗１１とゼナ
ーダイオード１２を介し、定電圧にて常時励磁され抑制
力を得ている。This output is connected to the operating coil OC of the mercury contact type polarized relay 7.
is applied to operate this polarized relay 7, and its a contact 7
By closing a, the large capacity contact type reed relay 8 is driven. Then, by obtaining the closing signal of the a contact 8a from the output terminal 13, the scalar amount of the AC input is detected. The suppression coil RC of the mercury contact type polarized relay 7 is intended to obtain a high recovery rate, and a DC input is introduced from the input terminal 10 using a separate DC power supply 9 for control, and is connected via a resistor 11 and a zener diode 12. , is constantly excited with a constant voltage to obtain a suppressing force.
なお、上記実施例では、水銀接点形の有極継電器と大容
量接点形リードリレーの基本的な組合せについて示した
が１通常これらの接点は密封されており、その動作状態
を目視することができない。Although the above example shows a basic combination of a mercury contact type polarized relay and a large capacity contact type reed relay, 1 these contacts are normally sealed and their operating status cannot be visually observed. .
そこで、これを確認あるいは監視するため、リードリレ
ーのコイルと並列に、発光ダイオード等の動作確認手段
を設けることとしてもよい。Therefore, in order to confirm or monitor this, an operation confirmation means such as a light emitting diode may be provided in parallel with the coil of the reed relay.
以上のように、この発明によれば、単相全波整流回路と
平滑回路の組合せにより、リレー入力回路を構成したの
で、高耐圧の移相用コンデンサ、可変抵抗、及びダイオ
ードの一部が不要となって、コスト的に有利なものとな
り、また、有極継電器の動作入力の大きい領域でも、動
作速度及び復帰速度に対する要求性能を満足させること
ができるという効果がある。As described above, according to the present invention, the relay input circuit is configured by a combination of a single-phase full-wave rectifier circuit and a smoothing circuit, so a high voltage phase shift capacitor, a variable resistor, and some diodes are unnecessary. Therefore, it is advantageous in terms of cost, and also has the effect that the required performance regarding the operation speed and return speed can be satisfied even in a region where the operation input of the polarized relay is large.
第１図はこの発明の一実施例による過電流継電器を示す
回路図、第２図は従来の過電流継電器を示す回路図であ
る。
１は交流電源（被測定量源）、３は入力変成器、４は単
相全波整流回路、５は平滑回路、７は有極継電器、８ａ
はａ接点（過電流出方接点）である。
なお、図中、同一符号は同一、又は相当部分を示す。
特許出願人 三菱電機株式会社
ｌ！２図FIG. 1 is a circuit diagram showing an overcurrent relay according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional overcurrent relay. 1 is an AC power supply (source of measured quantity), 3 is an input transformer, 4 is a single-phase full-wave rectifier circuit, 5 is a smoothing circuit, 7 is a polarized relay, 8a
is the a contact (overcurrent output contact). In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation l! Figure 2
Claims (2)
変成器と、上記変成器の出力を整流する整流回路と、上
記整流回路の直流出力により駆動される動作コイル及び
他の直流源の直流出力により駆動される抑制コイルを有
する有極継電器と、上記有極継電器の出力に基いて開閉
する過電流出力接点とを備えた過電流継電器において、
上記整流回路を単相全波整流回路とし、該単相全波整流
回路の出力を前記有極継電器に、平滑回路を介して入力
させたことを特徴とする過電流継電器。(1) A transformer that obtains an output proportional to the AC input from the source of the measured quantity, a rectifier circuit that rectifies the output of the transformer, an operating coil driven by the DC output of the rectifier circuit, and other DC sources. An overcurrent relay comprising a polarized relay having a suppression coil driven by a DC output of the polarized relay, and an overcurrent output contact that opens and closes based on the output of the polarized relay,
An overcurrent relay characterized in that the rectifier circuit is a single-phase full-wave rectifier circuit, and the output of the single-phase full-wave rectifier circuit is input to the polarized relay via a smoothing circuit.
したことを確認するための、作動確認手段を接続したこ
とを特徴とする特許請求の範囲第１項記載の過電流継電
器。(2) The overcurrent relay according to claim 1, wherein an operation confirmation means is connected to the overcurrent output contact for confirming that the overcurrent output contact has operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61263213A JPH0620339B2 (en) | 1986-11-05 | 1986-11-05 | Overcurrent relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61263213A JPH0620339B2 (en) | 1986-11-05 | 1986-11-05 | Overcurrent relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63117615A true JPS63117615A (en) | 1988-05-21 |
| JPH0620339B2 JPH0620339B2 (en) | 1994-03-16 |
Family
ID=17386352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61263213A Expired - Fee Related JPH0620339B2 (en) | 1986-11-05 | 1986-11-05 | Overcurrent relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620339B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51116958A (en) * | 1975-04-05 | 1976-10-14 | Yamada Kogyo Kk | Excessive current relay |
-
1986
- 1986-11-05 JP JP61263213A patent/JPH0620339B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51116958A (en) * | 1975-04-05 | 1976-10-14 | Yamada Kogyo Kk | Excessive current relay |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0620339B2 (en) | 1994-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4678985A (en) | Two-terminal line-powered control circuit | |
| KR890001255A (en) | DC power supply | |
| EP0802615B1 (en) | Switching power source apparatus | |
| JPS63117615A (en) | Overcurrent relay | |
| JPS57180395A (en) | Voltage controller for inverter | |
| GB2073921A (en) | Motor power control circuitry | |
| KR20200136250A (en) | Power conversion apparatus cutting off overvoltage supplied from external power source | |
| JPS5849108B2 (en) | Dengen Sochi | |
| JPH08237944A (en) | Switching mode power supply | |
| JPS62123960A (en) | Rectified ac current changer | |
| JPH11252920A (en) | Rectifier circuit | |
| GB1516693A (en) | Electrical power supply circuits | |
| JP2003348846A (en) | Power circuit | |
| SU890537A2 (en) | Device for capacitor braking of induction motor | |
| JPH0116390Y2 (en) | ||
| KR970010605B1 (en) | Dc type power supply device | |
| JPH048167A (en) | Power supply to be mounted on electronic machine | |
| JPS60190121A (en) | Device for protecting inverter circuit | |
| CN112217404A (en) | Alternating current to direct current rectifying module and method based on magnetic field | |
| JPS62839B2 (en) | ||
| JPH0525986U (en) | Switching power supply | |
| JPS6027916A (en) | Power supply device | |
| JPH052583U (en) | Power supply | |
| JPH05189066A (en) | Stabilized power circuit | |
| JPH05252744A (en) | Power circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |