JPS57101915A - Overload preventive device - Google Patents

Overload preventive device

Info

Publication number
JPS57101915A
JPS57101915A JP17945480A JP17945480A JPS57101915A JP S57101915 A JPS57101915 A JP S57101915A JP 17945480 A JP17945480 A JP 17945480A JP 17945480 A JP17945480 A JP 17945480A JP S57101915 A JPS57101915 A JP S57101915A
Authority
JP
Japan
Prior art keywords
circuit
relay
load
thyristor
turned
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
JP17945480A
Other languages
Japanese (ja)
Inventor
Hiroaki Ono
Kenjun Nishida
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17945480A priority Critical patent/JPS57101915A/en
Publication of JPS57101915A publication Critical patent/JPS57101915A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting

Landscapes

  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE:To protect a load exactly, by turning on a thyristor and stopping supplying a current to a load circuit, in case when an overcurrent has flowed to the load circuit due to a short, etc. CONSTITUTION:Each one terminal of a DC power source 31, a surge absorbing diode 32 and a relay 33 is grounded, and the other terminal of the power source 31 is connected to a load circuit 44 through switches 42, 43. For instance, when the diode 32 or the relay 33 is turned on, voltage is applied to the relay 33, and a current is supplied to the circuit 44. In this case, if an overcurrent flows due to a load short, etc., gate-cathode voltage of a thyristor 35 becomes high gradually, and the thyristor 35 is turned on. As a result, the relay 33 is turned off, supply of a current to the circuit 44 is stopped, and the circuit 44 is prevented.
JP17945480A 1980-12-17 1980-12-17 Overload preventive device Pending JPS57101915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17945480A JPS57101915A (en) 1980-12-17 1980-12-17 Overload preventive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17945480A JPS57101915A (en) 1980-12-17 1980-12-17 Overload preventive device

Publications (1)

Publication Number Publication Date
JPS57101915A true JPS57101915A (en) 1982-06-24

Family

ID=16066134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17945480A Pending JPS57101915A (en) 1980-12-17 1980-12-17 Overload preventive device

Country Status (1)

Country Link
JP (1) JPS57101915A (en)

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