JPS5450942A - Detector for disconnection in distribution line - Google Patents

Detector for disconnection in distribution line

Info

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
Application number
JP11828177A
Other languages
Japanese (ja)
Inventor
Tsutomu Kondo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP11828177A priority Critical patent/JPS5450942A/en
Publication of JPS5450942A publication Critical patent/JPS5450942A/en
Pending legal-status Critical Current

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  • 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
JP11828177A 1977-09-30 1977-09-30 Detector for disconnection in distribution line Pending JPS5450942A (en)

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)

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