CA2039704A1 - Fault powered, processor controlled circuit breaker trip system having reliable tripping operation - Google Patents

Fault powered, processor controlled circuit breaker trip system having reliable tripping operation

Info

Publication number
CA2039704A1
CA2039704A1 CA2039704A CA2039704A CA2039704A1 CA 2039704 A1 CA2039704 A1 CA 2039704A1 CA 2039704 A CA2039704 A CA 2039704A CA 2039704 A CA2039704 A CA 2039704A CA 2039704 A1 CA2039704 A1 CA 2039704A1
Authority
CA
Canada
Prior art keywords
solenoid
processor
power
circuit breaker
tripping operation
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
CA2039704A
Other languages
French (fr)
Other versions
CA2039704C (en
Inventor
Leon William Durivage, Iii
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.)
Schneider Electric USA Inc
Original Assignee
Leon William Durivage, Iii
Square D Company
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 Leon William Durivage, Iii, Square D Company filed Critical Leon William Durivage, Iii
Publication of CA2039704A1 publication Critical patent/CA2039704A1/en
Application granted granted Critical
Publication of CA2039704C publication Critical patent/CA2039704C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • H02H1/063—Arrangements for supplying operative power primary power being supplied by fault current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/30—Staggered disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders

Abstract

A fault-powered, processor-based tripping system, includes a solenoid for interrupting a current path in response to a trip signal generated by a processor. The processor analyzes current provided by a current sensor, by way of an interface circuit, to determine when the trip signal should be generated. A power supply provides a reference signal to the processor to indicate the amount of power it is capable of delivering to the solenoid. Before attempting to engage the solenoid, the processor checks the level of the reference signal to determine whether or not the power supply is at that time capable of supplying the solenoid with a sufficient amount of power to effect interruption of the current path thereby avoiding a power loss by inappropriate engagement of the solenoid. If the power level is sufficient to engage the solenoid, the processor generates the trip signal to interrupt the current path.
CA002039704A 1989-08-31 1990-08-20 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation Expired - Lifetime CA2039704C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US403,225 1989-08-31
US07/403,225 US5038246A (en) 1989-08-31 1989-08-31 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation

Publications (2)

Publication Number Publication Date
CA2039704A1 true CA2039704A1 (en) 1991-03-01
CA2039704C CA2039704C (en) 1996-01-16

Family

ID=23594978

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002039704A Expired - Lifetime CA2039704C (en) 1989-08-31 1990-08-20 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation

Country Status (8)

Country Link
US (1) US5038246A (en)
EP (1) EP0440782B1 (en)
JP (1) JP2625252B2 (en)
CA (1) CA2039704C (en)
DE (1) DE69013667T2 (en)
IE (1) IE72470B1 (en)
MX (1) MX174195B (en)
WO (1) WO1991003825A1 (en)

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Also Published As

Publication number Publication date
EP0440782B1 (en) 1994-10-26
JP2625252B2 (en) 1997-07-02
DE69013667D1 (en) 1994-12-01
CA2039704C (en) 1996-01-16
DE69013667T2 (en) 1995-06-01
MX174195B (en) 1994-04-26
EP0440782A1 (en) 1991-08-14
JPH04502999A (en) 1992-05-28
EP0440782A4 (en) 1993-01-27
US5038246A (en) 1991-08-06
IE903138A1 (en) 1991-03-13
IE72470B1 (en) 1997-04-09
WO1991003825A1 (en) 1991-03-21

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Legal Events

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