JPS62177239U - - Google Patents
Info
- Publication number
- JPS62177239U JPS62177239U JP6351986U JP6351986U JPS62177239U JP S62177239 U JPS62177239 U JP S62177239U JP 6351986 U JP6351986 U JP 6351986U JP 6351986 U JP6351986 U JP 6351986U JP S62177239 U JPS62177239 U JP S62177239U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- current
- trip coil
- switching element
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例の電気回路図、第２
図は整流回路５によつて整流された後の信号電流
の波形図、第３図は本考案におけるトリガ信号発
生後のトリツプコイル８に印加される電圧波形図
、第４図は先行技術のトリガ信号発生後のトリツ
プコイルに印加される電圧波形図である。
１……単相交流電源、４……電流回路、５……
全波整流回路、６……比較判定制御回路、８……
トリツプコイル、１４……サイリスタ、Ｃ１……
コンデンサ、Ｄ１，Ｄ２，Ｄ３，Ｄ４……ダイオ
ード、ＺＤ１，ＺＤ２，ＺＤ３，ＺＤ４……ツエ
ナダイオード、Ｔｒ１，Ｔｒ２，Ｔｒ３……トラ
ンジスタ。
Fig. 1 is an electrical circuit diagram of one embodiment of the present invention;
The figure is a waveform diagram of the signal current after being rectified by the rectifier circuit 5, Figure 3 is a voltage waveform diagram applied to the trip coil 8 after the trigger signal is generated in the present invention, and Figure 4 is the trigger signal of the prior art. FIG. 3 is a diagram of a voltage waveform applied to a trip coil after a trip occurs. 1...Single-phase AC power supply, 4...Current circuit, 5...
Full-wave rectifier circuit, 6... Comparison/judgment control circuit, 8...
Trip coil, 14...thyristor, C1...
Capacitor, D1, D2, D3, D4...Diode, ZD1, ZD2, ZD3, ZD4...Zena diode, Tr1, Tr2, Tr3...Transistor.
Claims (1)
らの出力を整流する整流回路と、整流回路の出力
電流を電圧に変換する信号発生回路と、信号発生
回路の出力により異常を判別し、所定の時間後に
トリガ信号を発生する制御回路と、トリツプコイ
ルと、制御回路からの前記トリガ信号によつてト
リツプコイルを制御するスイツチング素子と、こ
のトリツプコイルの励磁によつて開離動作を行な
う開極手段とを備えた過電流保護装置において、 前記スイツチング素子の導通状態を保持する保
持回路を設けるようにしたことを特徴とする過電
流保護装置。[Claims for Utility Model Registration] A current transformer that detects current in an electrical circuit, a rectifier circuit that rectifies the output from the current transformer, a signal generation circuit that converts the output current of the rectification circuit into voltage, and a signal generation circuit. A control circuit that determines an abnormality based on the output of the circuit and generates a trigger signal after a predetermined time; a trip coil; a switching element that controls the trip coil according to the trigger signal from the control circuit; What is claimed is: 1. An overcurrent protection device comprising a circuit opening means for performing a circuit opening operation, characterized in that a holding circuit is provided to maintain a conductive state of the switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6351986U JPS62177239U (en) | 1986-04-25 | 1986-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6351986U JPS62177239U (en) | 1986-04-25 | 1986-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62177239U true JPS62177239U (en) | 1987-11-11 |
Family
ID=30898822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6351986U Pending JPS62177239U (en) | 1986-04-25 | 1986-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62177239U (en) |
-
1986
- 1986-04-25 JP JP6351986U patent/JPS62177239U/ja active Pending