CA2094014A1 - Arc detection system - Google Patents

Arc detection system

Info

Publication number
CA2094014A1
CA2094014A1 CA2094014A CA2094014A CA2094014A1 CA 2094014 A1 CA2094014 A1 CA 2094014A1 CA 2094014 A CA2094014 A CA 2094014A CA 2094014 A CA2094014 A CA 2094014A CA 2094014 A1 CA2094014 A1 CA 2094014A1
Authority
CA
Canada
Prior art keywords
current
break
square wave
line
arc
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.)
Granted
Application number
CA2094014A
Other languages
French (fr)
Other versions
CA2094014C (en
Inventor
Charles W. Ragsdale
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.)
Bio Rad Laboratories Inc
Original Assignee
Bio Rad Laboratories Inc
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 Bio Rad Laboratories Inc filed Critical Bio Rad Laboratories Inc
Publication of CA2094014A1 publication Critical patent/CA2094014A1/en
Application granted granted Critical
Publication of CA2094014C publication Critical patent/CA2094014C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors

Abstract

An arc detector for detecting electrical arcs across a break in a line carrying a current in an electrical system.
Normally, the line carries current, but when the line is broken, current doesn't flow until an arc occurs across the break. The arc detector detects the break using a current sensor for measuring the current, a filter for filtering out unwanted frequencies, an amplifier for amplifying the remaining frequencies into a substantially square wave, a counter for counting square wave transitions, and a latch to hold a detection signal at an output node when the counter counts a preset number of square wave transitions without being reset by a reset switch or a periodic oscillator.
CA002094014A 1992-05-15 1993-04-14 Arc detection system Expired - Lifetime CA2094014C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/883,505 US5280404A (en) 1992-05-15 1992-05-15 Arc detection system
US883,505 1992-05-15

Publications (2)

Publication Number Publication Date
CA2094014A1 true CA2094014A1 (en) 1993-11-16
CA2094014C CA2094014C (en) 1999-01-19

Family

ID=25382699

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002094014A Expired - Lifetime CA2094014C (en) 1992-05-15 1993-04-14 Arc detection system

Country Status (5)

Country Link
US (1) US5280404A (en)
EP (1) EP0570206B1 (en)
JP (1) JPH0696839A (en)
CA (1) CA2094014C (en)
DE (1) DE69308925T2 (en)

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US5969920A (en) * 1998-03-27 1999-10-19 Eaton Corporation Test circuit for verifying operation of an arc fault detector
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US6751528B1 (en) 2000-11-27 2004-06-15 General Electric Company Residential circuit arc detection
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US9759758B2 (en) 2014-04-25 2017-09-12 Leviton Manufacturing Co., Inc. Ground fault detector
JP6272135B2 (en) * 2014-05-20 2018-01-31 三菱電機株式会社 Power consumption system, leakage detection method, and program
CN204290310U (en) 2014-12-15 2015-04-22 陈泽 A kind of oppositely ground protection circuit and ground-fault interrupter
CN105406441B (en) 2015-12-15 2019-04-09 陈泽 A kind of power ground fault secure circuit
US10410816B2 (en) 2016-09-19 2019-09-10 Ze Chen Hybrid arc / ground fault circuit interrupter and methods of operation thereof
US10439387B2 (en) * 2016-12-29 2019-10-08 Ze Chen Advanced ground fault circuit interrupters (GFCI) and methods of operation thereof
JP6925149B2 (en) * 2017-03-29 2021-08-25 住友重機械工業株式会社 Energizing heating device
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Also Published As

Publication number Publication date
DE69308925T2 (en) 1997-09-04
EP0570206A2 (en) 1993-11-18
CA2094014C (en) 1999-01-19
EP0570206A3 (en) 1994-09-14
DE69308925D1 (en) 1997-04-24
US5280404A (en) 1994-01-18
EP0570206B1 (en) 1997-03-19
JPH0696839A (en) 1994-04-08

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Legal Events

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