JPH0428737U - - Google Patents
Info
- Publication number
- JPH0428737U JPH0428737U JP6903390U JP6903390U JPH0428737U JP H0428737 U JPH0428737 U JP H0428737U JP 6903390 U JP6903390 U JP 6903390U JP 6903390 U JP6903390 U JP 6903390U JP H0428737 U JPH0428737 U JP H0428737U
- Authority
- JP
- Japan
- Prior art keywords
- ground fault
- current
- arc
- detection circuit
- outputs
- 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 4
- 230000003213 activating effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案に係る弧光地絡表示器付無方向
性地絡保護継電器の実施例の構成を示すブロツク
図、第２図は本考案に係る弧光地絡表示器付方向
性地絡保護継電器の実施例を示すブロツク図、第
３図は本考案に係る地絡保護継電器の外観を示す
斜視図である。
１……配電線、２……電流検出器、３……第１
のフイルタ、４……第２のフイルタ、５，６，２
３……増幅器、７，８，２４……レベル比較器、
９，１０……タイマ、１１……オア回路、１２…
…トリツプ回路、１３……トリツプコイル、１４
……表示器、１５……スイツチ、１６，２６……
アンド回路、１７，２５……位相比較器、２１…
…零相電圧検出器、２２……第３のフイルタ、３
０……地絡保護継電器、３１……電源表示ランプ
、３２……つまみ、３３……ターゲツト、３４…
…地絡試験押釦スイツチ、３５……接続端子、４
０……表示器、４１……カウンタ、４２……弧光
地絡表示器、４３……つまみ。
Fig. 1 is a block diagram showing the configuration of an embodiment of a non-directional earth fault protection relay with an arcuate ground fault indicator according to the present invention, and Fig. 2 is a directional earth fault protection relay with an arcuate earth fault indicator according to the present invention. FIG. 3 is a block diagram showing an embodiment of the relay, and FIG. 3 is a perspective view showing the appearance of the earth fault protection relay according to the present invention. 1... Distribution line, 2... Current detector, 3... First
filter, 4... second filter, 5, 6, 2
3...Amplifier, 7,8,24...Level comparator,
9, 10...Timer, 11...OR circuit, 12...
...Trip circuit, 13...Trip coil, 14
...Display, 15...Switch, 16,26...
AND circuit, 17, 25...phase comparator, 21...
... Zero-phase voltage detector, 22 ... Third filter, 3
0...Ground fault protection relay, 31...Power indicator lamp, 32...Knob, 33...Target, 34...
...Earth fault test push button switch, 35...Connection terminal, 4
0... Display, 41... Counter, 42... Arc light ground fault indicator, 43... Knob.
Claims (1)
する電流検出器と、同電流検出器で検出された電
流のうち商用周波数レンジの周波数成分を通過さ
せる第１のフイルタ及び商用周波数レンジよりず
つと高い周波数成分を通過させる第２のフイルタ
と、前記第１のフイルタを通過した電流が設定し
た値を超えたときに地絡電流発生信号を出力する
地絡電流検出回路と、同地絡電流検出回路の出力
が発生したときに遮断器を開放するトリツプ機構
と、前記第２のフイルタを通過した電流が設定し
た値を超えたときに弧光地絡発生信号を出力する
弧光地絡電流検出回路と、同弧光地絡電流検出回
路の出力の有無及び／又は回数を表示する弧光地
絡表示器とを備えたことを特徴とする弧光地絡表
示器付地絡保護継電器。 ２ 弧光地絡表示器の表示が予め設定された回数
以上になつたときにトリツプ機構を作動させて遮
断器を開放する手段を設けたことを特徴とする請
求項１記載の弧光地絡表示器付地絡保護継電器。[Scope of Claim for Utility Model Registration] 1. A current detector that detects the ground fault current flowing in the event of a ground fault accident in a distribution line, and a first current detector that passes frequency components in the commercial frequency range of the current detected by the current detector. a second filter that passes frequency components higher than the commercial frequency range; and a ground fault current that outputs a ground fault current generation signal when the current passing through the first filter exceeds a set value. a detection circuit, a trip mechanism that opens the circuit breaker when the output of the ground fault current detection circuit occurs, and a trip mechanism that generates an arc ground fault occurrence signal when the current passing through the second filter exceeds a set value. A ground fault with an arc ground fault indicator characterized by comprising an arc ground fault current detection circuit that outputs an output, and an arc ground fault indicator that displays the presence or absence and/or number of outputs of the arc ground fault current detection circuit. Protective relay. 2. The arc ground fault indicator according to claim 1, further comprising means for activating a trip mechanism to open the circuit breaker when the display on the arc ground fault indicator exceeds a preset number of times. Ground fault protection relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6903390U JPH0729698Y2 (en) | 1990-06-28 | 1990-06-28 | Ground fault protection relay with arc light ground fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6903390U JPH0729698Y2 (en) | 1990-06-28 | 1990-06-28 | Ground fault protection relay with arc light ground fault indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0428737U true JPH0428737U (en) | 1992-03-06 |
| JPH0729698Y2 JPH0729698Y2 (en) | 1995-07-05 |
Family
ID=31603993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6903390U Expired - Fee Related JPH0729698Y2 (en) | 1990-06-28 | 1990-06-28 | Ground fault protection relay with arc light ground fault indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729698Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919045A (en) * | 1995-06-30 | 1997-01-17 | Naigai Denki Kk | Degradation prediction method of cable and cable initial ground relay |
| JP2004519185A (en) * | 2001-02-01 | 2004-06-24 | ハイドロ − エアー、インコーポレイテッド | Ground fault circuit breaker applicable to aircraft |
| CN113820570A (en) * | 2021-08-30 | 2021-12-21 | 安徽莱特实业集团有限公司 | Arc discharge fault identification method based on triangular wave width ratio and double-threshold setting |
-
1990
- 1990-06-28 JP JP6903390U patent/JPH0729698Y2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919045A (en) * | 1995-06-30 | 1997-01-17 | Naigai Denki Kk | Degradation prediction method of cable and cable initial ground relay |
| JP2004519185A (en) * | 2001-02-01 | 2004-06-24 | ハイドロ − エアー、インコーポレイテッド | Ground fault circuit breaker applicable to aircraft |
| CN113820570A (en) * | 2021-08-30 | 2021-12-21 | 安徽莱特实业集团有限公司 | Arc discharge fault identification method based on triangular wave width ratio and double-threshold setting |
| CN113820570B (en) * | 2021-08-30 | 2024-04-16 | 安徽莱特实业集团有限公司 | Arc discharge fault identification method based on triangular wave width ratio and double threshold setting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729698Y2 (en) | 1995-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |