JPS59132335U - motor protection relay - Google Patents
motor protection relayInfo
- Publication number
- JPS59132335U JPS59132335U JP2525583U JP2525583U JPS59132335U JP S59132335 U JPS59132335 U JP S59132335U JP 2525583 U JP2525583 U JP 2525583U JP 2525583 U JP2525583 U JP 2525583U JP S59132335 U JPS59132335 U JP S59132335U
- Authority
- JP
- Japan
- Prior art keywords
- overcurrent
- detection circuit
- load current
- open phase
- protection relay
- 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、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 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, 5...Integrator circuit, 6... ...OR element, 7...Output circuit, 10...Start detection circuit, 11...Knot element, 12.13...AND' element. 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匂にこの
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で始動モー
ドでは遅く運転モードでは早く設定する手段、上記負荷
電流より一定時間欠相を検出すると欠相トリップ信号を
出力する欠相検出回路とよりなるモータ保護継電器。a current transformer that detects the load current; an overcurrent detection circuit that outputs an overcurrent signal when the load current exceeds a predetermined standard value;
When the load current exceeds a predetermined reference value for the motor rated current, it is assumed that the motor is starting. A means for setting the current detection circuit to start mode and operation mode and outputting an overcurrent trip signal, and setting the overcurrent operation time of this overcurrent detection circuit to be slower in the start mode and earlier in the operation mode, and for a certain period of time from the load current. A motor protection relay consisting of an open phase detection circuit that outputs an open phase trip signal when an open phase is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525583U JPS59132335U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2525583U JPS59132335U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59132335U true JPS59132335U (en) | 1984-09-05 |
Family
ID=30156245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2525583U Pending JPS59132335U (en) | 1983-02-23 | 1983-02-23 | motor protection relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59132335U (en) |
-
1983
- 1983-02-23 JP JP2525583U patent/JPS59132335U/en active Pending
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