JPH0230236U - - Google Patents
Info
- Publication number
- JPH0230236U JPH0230236U JP10941388U JP10941388U JPH0230236U JP H0230236 U JPH0230236 U JP H0230236U JP 10941388 U JP10941388 U JP 10941388U JP 10941388 U JP10941388 U JP 10941388U JP H0230236 U JPH0230236 U JP H0230236U
- Authority
- JP
- Japan
- Prior art keywords
- output
- undervoltage detection
- detection section
- undervoltage
- supply line
- 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
- 238000001514 detection method Methods 0.000 claims description 14
- 230000007717 exclusion Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は、この考案の一実施例を示す方向短絡
継電器の回路ブロツク図、第２図は、同方向短絡
継電器の電圧増幅回路と不足電圧検出機能除外端
子との接続関係を示す回路接続図である。
１：方向短絡継電器、２：電力供給ライン、４
Ｒ，４Ｓ，４Ｔ：不足電圧検出部、５Ｒ，５Ｓ，
５Ｔ：過電流検出部、３２Ｒ：位相判別回路、３
１Ｒ，３３Ｒ：ＡＮＤ回路、３７：出力回路、３
８：出力リレー、Ｍ１，Ｍ２：不足電圧検出機能
除外端子。
Fig. 1 is a circuit block diagram of a directional short-circuit relay showing an embodiment of this invention, and Fig. 2 is a circuit connection diagram showing the connection relationship between the voltage amplification circuit of the same-direction short-circuit relay and the undervoltage detection function exclusion terminal. It is. 1: Directional short circuit relay, 2: Power supply line, 4
R, 4S, 4T: Undervoltage detection section, 5R, 5S,
5T: Overcurrent detection section, 32R: Phase discrimination circuit, 3
1R, 33R: AND circuit, 37: Output circuit, 3
8: Output relay, M1 , M2 : Undervoltage detection function exclusion terminals.
Claims (1)
定値以下である場合に出力を出す不足電圧検出部
と、電力供給ラインの電流を検出し、検出電流が
整定値以上である場合に出力を出す過電流検出部
と、前記検出電圧と前記検出電流の位相判別によ
り、前記電力供給ラインを流れる電流の方向が所
定の方向である場合に出力を出す位相判別部と、
前記過電流検出部、不足電圧検出部及び位相判別
部の各出力の論理積出力に応答し、電力供給ライ
ンのしや断器を断するリレーを駆動する出力回路
とからなる方向短絡継電器において、 設定の有無により前記不足電圧検出部より強制
的に不足電圧検出を示す信号を出力するか不足電
圧検出部の出力を検出状態に応じたものとするか
を選択する不足電圧検出機能除外設定手段を備え
たことを特徴とする方向短絡継電器。[Claims for Utility Model Registration] An undervoltage detection section that detects the voltage of the power supply line and outputs an output when the detected voltage is below a set value; an overcurrent detection unit that outputs an output when the detected voltage and the detected current are the same, and a phase discrimination unit that outputs an output when the direction of the current flowing through the power supply line is in a predetermined direction by determining the phase of the detected voltage and the detected current. ,
A directional short-circuit relay comprising an output circuit that responds to the logical product output of each output of the overcurrent detection section, undervoltage detection section, and phase discrimination section and drives a relay that disconnects the power supply line. Undervoltage detection function exclusion setting means for selecting whether to forcibly output a signal indicating undervoltage detection from the undervoltage detection section or to make the output of the undervoltage detection section correspond to the detection state depending on whether the undervoltage detection section is set or not. A directional short-circuit relay characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10941388U JPH0729700Y2 (en) | 1988-08-19 | 1988-08-19 | Directional short circuit relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10941388U JPH0729700Y2 (en) | 1988-08-19 | 1988-08-19 | Directional short circuit relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230236U true JPH0230236U (en) | 1990-02-26 |
| JPH0729700Y2 JPH0729700Y2 (en) | 1995-07-05 |
Family
ID=31345634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10941388U Expired - Lifetime JPH0729700Y2 (en) | 1988-08-19 | 1988-08-19 | Directional short circuit relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729700Y2 (en) |
-
1988
- 1988-08-19 JP JP10941388U patent/JPH0729700Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729700Y2 (en) | 1995-07-05 |
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