JPS5425449A - Protective realy - Google Patents
Protective realyInfo
- Publication number
- JPS5425449A JPS5425449A JP8984777A JP8984777A JPS5425449A JP S5425449 A JPS5425449 A JP S5425449A JP 8984777 A JP8984777 A JP 8984777A JP 8984777 A JP8984777 A JP 8984777A JP S5425449 A JPS5425449 A JP S5425449A
- Authority
- JP
- Japan
- Prior art keywords
- realy
- protective
- level comparator
- relay
- mal
- 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 prevent the mal-operation of relay by detecting the disconnection of transformer or of line by closing protective relay when the first level comparator is in operation and the second level comparator is not in operation.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8984777A JPS5425449A (en) | 1977-07-28 | 1977-07-28 | Protective realy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8984777A JPS5425449A (en) | 1977-07-28 | 1977-07-28 | Protective realy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5425449A true JPS5425449A (en) | 1979-02-26 |
Family
ID=13982152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8984777A Pending JPS5425449A (en) | 1977-07-28 | 1977-07-28 | Protective realy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5425449A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05118719A (en) * | 1991-10-15 | 1993-05-14 | Sanden Corp | Revolution control of motor-driven compressor |
-
1977
- 1977-07-28 JP JP8984777A patent/JPS5425449A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05118719A (en) * | 1991-10-15 | 1993-05-14 | Sanden Corp | Revolution control of motor-driven compressor |
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