JPH01134930U - - Google Patents
Info
- Publication number
- JPH01134930U JPH01134930U JP3203988U JP3203988U JPH01134930U JP H01134930 U JPH01134930 U JP H01134930U JP 3203988 U JP3203988 U JP 3203988U JP 3203988 U JP3203988 U JP 3203988U JP H01134930 U JPH01134930 U JP H01134930U
- Authority
- JP
- Japan
- Prior art keywords
- current
- load
- zero
- transformers
- control device
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は、この考案の一実施例を示すＳＯＧ型
の開閉器制御装置の入力回路の要部を示す回路図
、第２図は、同入力回路を用いたＳＯＧ型の開閉
器制御装置の全体回路ブロツク図、第３図ａ、第
３図ｂ及び第３図ｃは、この考案の入力回路の突
入電流に対する安定性を説明するための波形図で
ある。
１：開閉器、２ａ，２ｂ，２ｃ：三相負荷電源
ライン、４ａ，４ｂ，４ｃ：負荷電流検出用変流
器、７：零相電流検出用変流器。
Fig. 1 is a circuit diagram showing the main part of the input circuit of an SOG type switch control device showing one embodiment of this invention, and Fig. 2 is a circuit diagram of an SOG type switch control device using the same input circuit. The overall circuit block diagrams, FIGS. 3a, 3b, and 3c, are waveform diagrams for explaining the stability of the input circuit of this invention against rush current. 1: Switch, 2a, 2b, 2c: Three-phase load power supply line, 4a, 4b, 4c: Current transformer for detecting load current, 7: Current transformer for detecting zero-phase current.
Claims (1)
あるいは零相電流が所定レベルを越えたことを検
知し、電源断を条件に負荷回路の開閉器を断する
ようにした開閉器制御装置において、 ３個の変流器のそれぞれを三相負荷ラインのそ
れぞれに貫通し、３個の変流器の２次コイルの一
端を共通接続し、他端より、三相各負荷電流を過
電流検出部に取込むとともに、前記３個の変流器
の２次コイルの個別取込みラインを、第４の変流
器に貫通させ、第４の変流器により、地絡電流検
出部に零相電流を取込むように構成したことを特
徴とする開閉器制御装置の入力回路。[Claims for Utility Model Registration] A device that takes in three-phase load current and zero-sequence current, detects when the load current or zero-sequence current exceeds a predetermined level, and disconnects the load circuit switch on the condition that the power is cut off. In the switch control device, each of the three current transformers is passed through each of the three-phase load lines, one end of the secondary coils of the three current transformers is commonly connected, and the three-phase load line is connected from the other end. Each load current is taken into the overcurrent detection section, and the individual intake lines of the secondary coils of the three current transformers are passed through the fourth current transformer, and the fourth current transformer detects a ground fault. 1. An input circuit for a switch control device, characterized in that the current detection section is configured to take in a zero-sequence current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3203988U JPH01134930U (en) | 1988-03-10 | 1988-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3203988U JPH01134930U (en) | 1988-03-10 | 1988-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01134930U true JPH01134930U (en) | 1989-09-14 |
Family
ID=31258337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3203988U Pending JPH01134930U (en) | 1988-03-10 | 1988-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01134930U (en) |
-
1988
- 1988-03-10 JP JP3203988U patent/JPH01134930U/ja active Pending