JPS59132338U - motor protection relay - Google Patents
motor protection relayInfo
- Publication number
- JPS59132338U JPS59132338U JP2525883U JP2525883U JPS59132338U JP S59132338 U JPS59132338 U JP S59132338U JP 2525883 U JP2525883 U JP 2525883U JP 2525883 U JP2525883 U JP 2525883U JP S59132338 U JPS59132338 U JP S59132338U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- outputs
- signal
- overcurrent
- load current
- 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
- Protection Of Generators And Motors (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図は従来のモータ保護継電器のブロック図、第２図
はこの考案のモータ保護継電器の一実施例のブロック図
である。
１・・・・・・変流器、２・・・・・・過電流検出回路
、３・・・・・・欠相検出回路、４・・・・・・反相検
出回路、５・・・・・・積分 ′回路、６・・・・・・
オア素子、７・・・・・・出力回路、１０・・・・・・
始動検出回路、１１・・・・・・ノット素子、１２・・
・・・・アンド素子。なお、図中同一符号は同一または
相当部分を示す。FIG. 1 is a block diagram of a conventional motor protection relay, and FIG. 2 is a block diagram of an embodiment of the motor protection relay of this invention. 1... Current transformer, 2... Overcurrent detection circuit, 3... Open phase detection circuit, 4... Anti-phase detection circuit, 5... ...Integration 'Circuit, 6...
OR element, 7... Output circuit, 10...
Start detection circuit, 11... Knot element, 12...
...And Motoko. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
基準値以上の場合に過電流信号を出力する過電流検出回
路、上記負荷電流がモータ定格電流に対する所定め基準
値を越えたときモータが始動しているとみなすとともに
この始動から所定時間経過後に始動信号を出力する始動
検出回路、上記始動信号が出力されている間は上記過電
流検出回路の動作を禁止状態にしかつ始動信号が出力さ
れてしないときは上記過電流検出回路の動作可能状態に
する手段、上記負荷電流より一定時間反相を検出すると
反相トリップ信号を出力する反相検出回路、上記負荷電
流より欠相を一定時間検出すると欠相トリップ信号を出
力する欠相検出回路を備えてなるモータ保護継電器。(1) A current transformer that detects the load current, an overcurrent detection circuit that outputs an overcurrent signal when the load current exceeds a predetermined reference value, and a current transformer that outputs an overcurrent signal when the load current exceeds a predetermined reference value for the motor rated current. a start detection circuit that assumes that the is started and outputs a start signal after a predetermined period of time has elapsed since the start; while the start signal is being output, the operation of the overcurrent detection circuit is prohibited and the start signal is output. means for enabling the overcurrent detection circuit to operate when the overcurrent detection circuit is not detected; an antiphase detection circuit that outputs an antiphase trip signal when detecting an antiphase for a certain period of time from the load current; A motor protection relay equipped with a phase loss detection circuit that outputs a phase loss trip signal when detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525883U JPS59132338U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525883U JPS59132338U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59132338U true JPS59132338U (en) | 1984-09-05 |
Family
ID=30156248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2525883U Pending JPS59132338U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59132338U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127548A (en) * | 1978-03-27 | 1979-10-03 | Matsushita Electric Works Ltd | Apparatus for protecting motor from impact load |
| JPS5672666A (en) * | 1979-11-12 | 1981-06-16 | Hisashi Yamada | Preparation of fish-paste product |
| JPS56113279A (en) * | 1980-02-12 | 1981-09-07 | Hisashi Yamada | Paste food made from fish meat and dairy product |
-
1983
- 1983-02-23 JP JP2525883U patent/JPS59132338U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127548A (en) * | 1978-03-27 | 1979-10-03 | Matsushita Electric Works Ltd | Apparatus for protecting motor from impact load |
| JPS5672666A (en) * | 1979-11-12 | 1981-06-16 | Hisashi Yamada | Preparation of fish-paste product |
| JPS56113279A (en) * | 1980-02-12 | 1981-09-07 | Hisashi Yamada | Paste food made from fish meat and dairy product |
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