KR930017261A - Overload relay - Google Patents
Overload relay Download PDFInfo
- Publication number
- KR930017261A KR930017261A KR1019920000796A KR920000796A KR930017261A KR 930017261 A KR930017261 A KR 930017261A KR 1019920000796 A KR1019920000796 A KR 1019920000796A KR 920000796 A KR920000796 A KR 920000796A KR 930017261 A KR930017261 A KR 930017261A
- Authority
- KR
- South Korea
- Prior art keywords
- relay
- voltage
- overload
- current
- time
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
변류기에 의해 전류를 검출하고, 검출된 전류를 직류전압으로 정류 변환하고, 이 정류된 전압을 설정된 전압과 비교하여 과부하를 검출하는 과부하 검출부와, 과부하를 검출한후 계전기를 동작 제어하는 계전기 제어부와 라인 전압을 감시하여 동작 전압이하일 경우에 계전기를 동작시키기 위한 저전압 검출회로로 구성되어 과부하 전류 및 저전압과 동작시간의 설정이 가능하고, 계전기가 과부하 또는 저전압으로 동작했을 때의 복귀방법을 수동 또는 자동복귀로 선택하여 사용할 수 있으며, 자동 복귀시의 복귀시간을 임의로 설정할 수 있음은 물론 단상 또는 삼상에 관계없이 외부 또는 내부점검을 이용할 수 있는 과부하 계전기.An overload detector for detecting current by a current transformer, rectifying and converting the detected current into a direct current voltage, and comparing the rectified voltage with a set voltage, a relay controller for controlling an operation of the relay after detecting the overload; It consists of a low voltage detection circuit that monitors the line voltage and operates the relay when the operating voltage is lower than it. The overload current, the low voltage and the operation time can be set. Overload relay which can be selected and used as return, can set the return time at the time of automatic return as well as external or internal inspection regardless of single phase or three phase.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명의 한 실시예를 나타낸 회로도, 제2도는 본 발명의 다른 실시예를 나타낸 회로도이다.FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 is a circuit diagram showing another embodiment of the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920000796A KR930017261A (en) | 1992-01-21 | 1992-01-21 | Overload relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920000796A KR930017261A (en) | 1992-01-21 | 1992-01-21 | Overload relay |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930017261A true KR930017261A (en) | 1993-08-30 |
Family
ID=65515397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920000796A KR930017261A (en) | 1992-01-21 | 1992-01-21 | Overload relay |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930017261A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7746617B2 (en) | 2006-04-19 | 2010-06-29 | Mitsubishi Electric Corporation | Overload relay and operating method thereof |
-
1992
- 1992-01-21 KR KR1019920000796A patent/KR930017261A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7746617B2 (en) | 2006-04-19 | 2010-06-29 | Mitsubishi Electric Corporation | Overload relay and operating method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR920010221A (en) | Current control circuit of air conditioner and method | |
US6711035B2 (en) | Switching power supply | |
KR880000686A (en) | Fault detection circuit of inductive load driving circuit | |
KR910002093A (en) | Inverter output voltage error correction device | |
KR930017261A (en) | Overload relay | |
KR950011925A (en) | Microwave | |
KR850002874Y1 (en) | Over load checking controller for crane hoist | |
KR930011388A (en) | SMPS Current Loss Prevention Device | |
JP2728512B2 (en) | Ringing choke converter switching circuit | |
KR950007250A (en) | V-seal's 110V input operation prevention circuit for 220V | |
KR930007960Y1 (en) | Reverse and faulting phase detecting circuit of 3 phase power source | |
KR970077872A (en) | Power failure detection circuit of switched mode power supply (SMPS) | |
JPS5710820A (en) | Constant voltage power supply device | |
JPH06233528A (en) | Switching power supply | |
KR950004673A (en) | Load protection circuit when low voltage is applied | |
KR200142705Y1 (en) | Slider motor protecting apparatus of seam tracker | |
JPS57142177A (en) | Control system for inverter device | |
KR970077871A (en) | Malfunction prevention circuit of switched mode power supply (SMPS) | |
KR970031139A (en) | Power supply circuit | |
KR960024786A (en) | Inverter Reset Circuit | |
KR980006753A (en) | Power supply low-voltage operation prevention circuit | |
KR970008764A (en) | Momentary power failure protection device | |
KR930022688A (en) | 110V / 220V automatic switching device | |
KR970002329A (en) | Power supply voltage level display circuit | |
JPH0530650A (en) | Inrush current preventing circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
WICV | Withdrawal of application forming a basis of a converted application |