JPS59103533U - overcurrent relay - Google Patents
overcurrent relayInfo
- Publication number
- JPS59103533U JPS59103533U JP20191882U JP20191882U JPS59103533U JP S59103533 U JPS59103533 U JP S59103533U JP 20191882 U JP20191882 U JP 20191882U JP 20191882 U JP20191882 U JP 20191882U JP S59103533 U JPS59103533 U JP S59103533U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- level
- outputs
- maximum value
- circuit
- 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.)
- Pending
Links
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は過電流継電器の構成の概略を示すブロック図、
第2図は従来の過電流継電器の要部(最大値検出回路)
を示す回路図、第3図は本考案の過電流継電器の要部(
最大値検出回路)の一実施例を示す回路図である。
1・・・・・・配電線、4.5・・・・・・整流回路、
6・・・・・・最大値検出回路、7・・・・・・レベル
検出回路、8・・・・・・タイマ回路、9・・・・・・
補助継電器、10.11・・・・・・OPアンプ、14
・・・・・・可変抵抗回路、Rf、 Rs、 R1へ1
□・・・・・・抵抗、SW1〜SW3・・・・・・レベ
ル切替スイッチ。Figure 1 is a block diagram schematically showing the configuration of an overcurrent relay.
Figure 2 shows the main parts of a conventional overcurrent relay (maximum value detection circuit)
The circuit diagram shown in Figure 3 shows the main parts of the overcurrent relay of the present invention (
FIG. 2 is a circuit diagram showing an example of a maximum value detection circuit. 1... Distribution line, 4.5... Rectifier circuit,
6... Maximum value detection circuit, 7... Level detection circuit, 8... Timer circuit, 9...
Auxiliary relay, 10.11...OP amplifier, 14
・・・・・・Variable resistance circuit, Rf, Rs, 1 to R1
□・・・Resistance, SW1~SW3・・・Level changeover switch.
Claims (1)
をそれぞれ整流する複数の整流回路と;これらの整流回
路出力のうち、最大レベルの出力のみを択一的に出力す
る最大値検出回路と;この最大値検出回路の出力レベル
が所定のレベル値を越えたことを検出するレベル検出回
路と;このレベル検出回路の出力に応答して所定時間後
にオン動作して補助継電器を駆動するタイマ回路とを具
備してなる過電流継電器において;前記最大値検出回路
は、前記整流回路の数をこ対応して設けられ、かつそれ
ぞれ前記整流回路の出力を増幅する。pアンプと; これらのOPアンプの出力に共通して接続されたOPア
ンプ増幅度可変用の可変抵抗回路とを有してなることを
特徴とする過電流継電器。[Claims for Utility Model Registration] A plurality of rectifier circuits that rectify the outputs from current transformers installed in each of the plurality of phases of a distribution line; Only the output with the maximum level is selected from among the outputs of these rectifier circuits. a maximum value detection circuit that outputs a maximum value; a level detection circuit that detects that the output level of this maximum value detection circuit exceeds a predetermined level value; and a level detection circuit that turns on after a predetermined time in response to the output of this level detection circuit. and a timer circuit for driving an auxiliary relay; the maximum value detection circuits are provided in correspondence with the number of rectifier circuits, and each amplifies the output of the rectifier circuit. . An overcurrent relay comprising: a p-amp; and a variable resistance circuit for varying the amplification degree of the OP-amp, which is commonly connected to the outputs of these OP-amps.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20191882U JPS59103533U (en) | 1982-12-27 | 1982-12-27 | overcurrent relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20191882U JPS59103533U (en) | 1982-12-27 | 1982-12-27 | overcurrent relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59103533U true JPS59103533U (en) | 1984-07-12 |
Family
ID=30427402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20191882U Pending JPS59103533U (en) | 1982-12-27 | 1982-12-27 | overcurrent relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59103533U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52111646A (en) * | 1976-03-12 | 1977-09-19 | Siemens Ag | Overcurrent relay |
JPS57160321A (en) * | 1981-03-26 | 1982-10-02 | Mitsubishi Electric Corp | Overcurrent relay unit |
-
1982
- 1982-12-27 JP JP20191882U patent/JPS59103533U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52111646A (en) * | 1976-03-12 | 1977-09-19 | Siemens Ag | Overcurrent relay |
JPS57160321A (en) * | 1981-03-26 | 1982-10-02 | Mitsubishi Electric Corp | Overcurrent relay unit |
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