JPS59132334U - motor protection relay - Google Patents
motor protection relayInfo
- Publication number
- JPS59132334U JPS59132334U JP2525483U JP2525483U JPS59132334U JP S59132334 U JPS59132334 U JP S59132334U JP 2525483 U JP2525483 U JP 2525483U JP 2525483 U JP2525483 U JP 2525483U JP S59132334 U JPS59132334 U JP S59132334U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- overcurrent
- phase
- outputs
- 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続器のブロック図、第２図
はこの考案のモータ保護継電器の一実施例を示すブロッ
ク図である。
１・・・・・・変流器、２・・・・・・過電流検出回路
、３・曲・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゜１３・・・・
・・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 continuation device, and FIG. 2 is a block diagram showing an embodiment of the motor protection relay of this invention. 1...Current transformer, 2...Overcurrent detection circuit, 3. Turn/open phase detection circuit, 4...Negative phase detection circuit, 5...・Integrator circuit, 6...OR element,
7...Output circuit, 10...Start detection circuit, 11...Knot element, 12゜13...
...And Motoko. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
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の基準値を
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、上記始動信号により上記過電流検出回路を始動モ
ードと運転モードとに設定して過電流トリップ信号を出
力し、かつこの過電流検出回路の過電流動作時間が始動
モードでは遅く、運転モードでは早く設定する手段、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。a current transformer that detects a load current; an overcurrent detection circuit that outputs an overcurrent signal when the load current is equal to or higher than a predetermined reference value;
A start detection circuit that assumes that the motor is started when the load current exceeds a predetermined reference value for the motor rated current and outputs a start signal after a predetermined time has elapsed from the start; and the overcurrent detection circuit that detects the start signal. means to output an overcurrent trip signal by setting the overcurrent detection circuit to the starting mode and the operating mode, and to set the overcurrent operating time of the overcurrent detection circuit to be slow in the starting mode and early in the operating mode, and to set the overcurrent operating time of the overcurrent detection circuit to be slow in the starting mode and early in the operating mode. A motor protection relay comprising an anti-phase detection circuit that outputs an anti-phase trip signal when an anti-phase is detected, and an open-phase detection circuit that outputs an open-phase trip signal when an open phase is detected from the load current for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525483U JPS59132334U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525483U JPS59132334U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59132334U true JPS59132334U (en) | 1984-09-05 |
Family
ID=30156244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2525483U Pending JPS59132334U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59132334U (en) |
-
1983
- 1983-02-23 JP JP2525483U patent/JPS59132334U/en active Pending
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