JPS5450942A - Detector for disconnection in distribution line - Google Patents
Detector for disconnection in distribution lineInfo
- Publication number
- JPS5450942A JPS5450942A JP11828177A JP11828177A JPS5450942A JP S5450942 A JPS5450942 A JP S5450942A JP 11828177 A JP11828177 A JP 11828177A JP 11828177 A JP11828177 A JP 11828177A JP S5450942 A JPS5450942 A JP S5450942A
- Authority
- JP
- Japan
- Prior art keywords
- constant voltage
- disconnection
- distribution line
- peak value
- voltage 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To enable an operation for always superivsing a disconnection in the distribution line, by determining a voltage, required for a disconnection detector circuit to made a response, across initial ends of the distribution line, at a level above the constant voltage of a constant voltage element, connected across final ends of the distribution line, and at a level below the peak value of DC power unit.
CONSTITUTION: When no disconnection is present in distribution lines L1, L1' and L2, L2', and peak value of voltage across each of the initial ends of the lines L1, L1' and L2, L2' will not come above the constant voltage of a constant voltage element D1, D2, causing a constant voltage element D0 to come not into a state of conduction, with a transistor T being in a state of off, and an alarm 5 does not woek. Subsequently, if a disconnection takes place in the sidtribution line, a peak value of voltage across initial ends of the disconnected distribution line goes above the constant voltage of the constant voltage element D0, and the constant voltage element D0 and the transisitor T are conducted causing the alarm 5 to work with a disconnection made known to be informed taking place in the distribution line
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11828177A JPS5450942A (en) | 1977-09-30 | 1977-09-30 | Detector for disconnection in distribution line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11828177A JPS5450942A (en) | 1977-09-30 | 1977-09-30 | Detector for disconnection in distribution line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5450942A true JPS5450942A (en) | 1979-04-21 |
Family
ID=14732771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11828177A Pending JPS5450942A (en) | 1977-09-30 | 1977-09-30 | Detector for disconnection in distribution line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5450942A (en) |
-
1977
- 1977-09-30 JP JP11828177A patent/JPS5450942A/en active Pending
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