JPS54113050A - Overcurrent relay - Google Patents
Overcurrent relayInfo
- Publication number
- JPS54113050A JPS54113050A JP1968378A JP1968378A JPS54113050A JP S54113050 A JPS54113050 A JP S54113050A JP 1968378 A JP1968378 A JP 1968378A JP 1968378 A JP1968378 A JP 1968378A JP S54113050 A JPS54113050 A JP S54113050A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- output
- current
- secondary winding
- current transformer
- 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
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To obtain time-limit characteristics by the procedure in which the secondary winding of current transformer in which relay is built is lessened and the relation between input current and output voltage is made saturated.
CONSTITUTION: An input current is introduced into the input treminal. The relay- built-in current transformer 1 is provided and then its secondary winding is connected to the resistor 2. A minimum operating current is settled by settling 3 relay. And, the starting device 5 is provided so that when the settled value is exceeded, rectified voltage corresponding to input current is charged in the integrating circuit 4. And, the level detector 6 sending out output when the output of the integrating circuit 4 reaches a predetermined value is provided and the supplementaty relay is driven or indicator is lightened by the output of the level detector 6. By selecting the core sectional area of the current transformer 1, the material of the core, and the winding number of secondary winding alike, saturating characteristics can be drawn out and predetermined time limit curve can thus be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1968378A JPS54113050A (en) | 1978-02-24 | 1978-02-24 | Overcurrent relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1968378A JPS54113050A (en) | 1978-02-24 | 1978-02-24 | Overcurrent relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54113050A true JPS54113050A (en) | 1979-09-04 |
Family
ID=12006025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1968378A Pending JPS54113050A (en) | 1978-02-24 | 1978-02-24 | Overcurrent relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54113050A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111026U (en) * | 1980-12-26 | 1982-07-09 |
-
1978
- 1978-02-24 JP JP1968378A patent/JPS54113050A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111026U (en) * | 1980-12-26 | 1982-07-09 |
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