CA2046077A1 - Programmable inverse time delay circuit - Google Patents

Programmable inverse time delay circuit

Info

Publication number
CA2046077A1
CA2046077A1 CA002046077A CA2046077A CA2046077A1 CA 2046077 A1 CA2046077 A1 CA 2046077A1 CA 002046077 A CA002046077 A CA 002046077A CA 2046077 A CA2046077 A CA 2046077A CA 2046077 A1 CA2046077 A1 CA 2046077A1
Authority
CA
Canada
Prior art keywords
signal
magnitude
reference signal
voltage
time delay
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.)
Abandoned
Application number
CA002046077A
Other languages
English (en)
French (fr)
Inventor
David A. Fox
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.)
Sundstrand Corp
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of CA2046077A1 publication Critical patent/CA2046077A1/en
Abandoned 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
    • H02H3/027—Details with automatic disconnection after a predetermined time
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • 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
    • 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
    • H02H3/006—Calibration or setting of parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Automation & Control Theory (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Breakers (AREA)
  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Current Or Voltage (AREA)
CA002046077A 1990-07-18 1991-07-02 Programmable inverse time delay circuit Abandoned CA2046077A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US553,508 1983-09-19
US07/553,508 US5073724A (en) 1990-07-18 1990-07-18 Programmable inverse time delay circuit

Publications (1)

Publication Number Publication Date
CA2046077A1 true CA2046077A1 (en) 1992-01-19

Family

ID=24209657

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002046077A Abandoned CA2046077A1 (en) 1990-07-18 1991-07-02 Programmable inverse time delay circuit

Country Status (6)

Country Link
US (1) US5073724A (enExample)
EP (1) EP0467675A3 (enExample)
JP (1) JPH04306016A (enExample)
CN (1) CN1023365C (enExample)
CA (1) CA2046077A1 (enExample)
TW (1) TW215504B (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2750015B2 (ja) * 1991-04-23 1998-05-13 三菱電機株式会社 比較判定回路
US5684466A (en) * 1995-09-12 1997-11-04 The Charles Machine Work, Inc. Electrical strike system control for subsurface boring equipment
JPH11134972A (ja) * 1997-10-28 1999-05-21 Matsushita Electric Works Ltd 遅れスイッチ
DE20109687U1 (de) * 2001-06-13 2002-10-24 Weidmüller Interface GmbH & Co., 32760 Detmold Sicherungsschaltung für ein Gleichstrom abgebendes, geregeltes Netzgerät
DE10146509C2 (de) * 2001-09-21 2003-07-31 Infineon Technologies Ag Integrierte Schaltung mit einer Eingangsschaltung
US7582986B2 (en) * 2004-10-08 2009-09-01 Schweitzer Engineering Laboratories, Inc. Compensated inverse-time undervoltage load shedding systems
CN1851492B (zh) * 2006-04-07 2011-05-04 福建师范大学 一种航标灯灯质测量的信号调理装置
US7460441B2 (en) * 2007-01-12 2008-12-02 Microchip Technology Incorporated Measuring a long time period
US7961485B2 (en) * 2007-12-12 2011-06-14 Semiconductor Components Industries, Llc Method of forming a PWM controller and structure therefor
CN101447663B (zh) * 2009-01-09 2012-05-30 铁道部运输局 一种硬件保护电路
US8203816B2 (en) * 2010-03-03 2012-06-19 Walter Michael Pitio Circuit breaker
US8929044B2 (en) * 2012-06-13 2015-01-06 Hamilton Sundstrand Corporation System and method for controlled overvoltage detection
GB2598722A (en) * 2020-09-03 2022-03-16 Micromass Ltd Analytical instrument circuitry
CN115296253B (zh) * 2022-07-07 2025-05-09 湖南科技大学 一种自恢复式过欠压保护电路

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043516A (en) * 1959-10-01 1962-07-10 Gen Electric Time summing device for division, multiplication, root taking and interpolation
GB1022683A (en) * 1962-08-29 1966-03-16 I B M United Kingdom Holdings Improvements in and relating to hybrid analogue-digital computing equipment
US3512151A (en) * 1966-02-01 1970-05-12 Vitro Corp Of America Digital conversion systems
US3697813A (en) * 1971-03-15 1972-10-10 Westinghouse Electric Corp Tripping circuit for static switches
US3697780A (en) * 1971-04-12 1972-10-10 Phillips Petroleum Co Limit control
DE2654927A1 (de) * 1976-12-03 1978-06-08 Siemens Ag Schaltungsanordnung zur abtastung einseitig verzerrter fernschreibzeichen
US4243974A (en) * 1978-02-24 1981-01-06 E. I. Du Pont De Nemours And Company Wide dynamic range analog to digital converter
US4245184A (en) * 1979-03-23 1981-01-13 Westinghouse Electric Corp. AC Solid-state circuit breaker
US4476511A (en) * 1980-04-15 1984-10-09 Westinghouse Electric Corp. Circuit interrupter with front panel numeric display
US4347541A (en) * 1981-01-14 1982-08-31 Gte Laboratories Incorporated Circuit breaker
US4368500A (en) * 1981-04-27 1983-01-11 Westinghouse Electric Corp. Solid-state load protection system having an improved inverse time delay circuit
US4345288A (en) * 1981-05-04 1982-08-17 Square D Company Solid state over-current protective apparatus for a power circuit
US4363064A (en) * 1981-07-27 1982-12-07 The United States Of America As Represented By The Secretary Of The Navy Overcurrent protection system
US4404473A (en) * 1981-12-17 1983-09-13 Westinghouse Electric Corp. Direct current power controller
US4438476A (en) * 1982-05-17 1984-03-20 General Electric Company Selectable integrating characteristic timer for protective relays
FR2530089A1 (fr) * 1982-07-12 1984-01-13 Merlin Gerin Declencheur electronique analogique pour disjoncteur de protection contre les surintensites d'un reseau a courant alternatif
US4513342A (en) * 1983-01-31 1985-04-23 General Electric Company Current-squared-time (i2 t) protection system
EP0300076A1 (en) * 1987-07-23 1989-01-25 Mitsubishi Denki Kabushiki Kaisha Circuit breaker

Also Published As

Publication number Publication date
CN1023365C (zh) 1993-12-29
JPH04306016A (ja) 1992-10-28
TW215504B (enExample) 1993-11-01
US5073724A (en) 1991-12-17
EP0467675A2 (en) 1992-01-22
CN1058301A (zh) 1992-01-29
EP0467675A3 (en) 1993-06-30

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Legal Events

Date Code Title Description
FZDE Discontinued