CA965480A - Undervoltage sensing circuit - Google Patents

Undervoltage sensing circuit

Info

Publication number
CA965480A
CA965480A CA148,497A CA148497A CA965480A CA 965480 A CA965480 A CA 965480A CA 148497 A CA148497 A CA 148497A CA 965480 A CA965480 A CA 965480A
Authority
CA
Canada
Prior art keywords
sensing circuit
undervoltage sensing
undervoltage
circuit
sensing
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.)
Expired
Application number
CA148,497A
Other languages
English (en)
Other versions
CA148497S (en
Inventor
Richard E. Luebrecht
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.)
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
Application granted granted Critical
Publication of CA965480A publication Critical patent/CA965480A/en
Expired 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
    • H02H3/24—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 responsive to undervoltage or no-voltage
    • H02H3/253—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 responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
CA148,497A 1971-08-19 1972-08-02 Undervoltage sensing circuit Expired CA965480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17300771A 1971-08-19 1971-08-19

Publications (1)

Publication Number Publication Date
CA965480A true CA965480A (en) 1975-04-01

Family

ID=22630117

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,497A Expired CA965480A (en) 1971-08-19 1972-08-02 Undervoltage sensing circuit

Country Status (5)

Country Link
US (1) US3749944A (en:Method)
JP (1) JPS4839949A (en:Method)
CA (1) CA965480A (en:Method)
DE (1) DE2239654C3 (en:Method)
FR (1) FR2149551A1 (en:Method)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959667A (en) * 1972-12-18 1976-05-25 Allis-Chalmers Corporation Overcurrent trip device
US3836790A (en) * 1973-08-22 1974-09-17 Lorain Prod Corp A-c voltage detector
US3940664A (en) * 1974-06-24 1976-02-24 Westinghouse Electric Corporation Multi-phase voltage sensing switching device
US4008417A (en) * 1974-07-29 1977-02-15 General Equipment And Manufacturing Company, Inc. Phase loss detector
JPS51124432U (en:Method) * 1975-04-03 1976-10-08
US4013902A (en) * 1975-08-06 1977-03-22 Honeywell Inc. Initial reset signal generator and low voltage detector
US4027204A (en) * 1976-01-28 1977-05-31 Borg-Warner Corporation Phase failure detection circuit for multi-phase systems
JPS5380340U (en:Method) * 1976-12-07 1978-07-04
JPS5917620B2 (ja) * 1977-02-16 1984-04-23 株式会社日立製作所 インバ−タの保護装置
US4344128A (en) * 1980-05-19 1982-08-10 Frye Robert C Automatic process control device
US4432030A (en) * 1982-03-29 1984-02-14 Carrier Corporation Short circuit protection system
EP0219617A1 (en) * 1985-10-03 1987-04-29 Mitsubishi Denki Kabushiki Kaisha Digital equipment
US4709320A (en) * 1986-10-23 1987-11-24 Zenith Electronics Corporation Low voltage shutdown circuit
DE3642314A1 (de) * 1986-12-11 1988-06-23 Basf Ag Verfahren zur herstellung von caprolactam durch beckmannsche umlagerung von cyclohexanonoxim
IT1204503B (it) * 1987-03-11 1989-03-03 Montedipe Spa Processo per la sintesi dell'epsiloncaprolattame
US4797570A (en) * 1987-07-31 1989-01-10 Westinghouse Electric Corp. Automatic paralleling of AC power sources
JPH082918Y2 (ja) * 1987-09-14 1996-01-29 三菱電機株式会社 しゃ断器の不足電圧引はずし制御装置
GB8817599D0 (en) * 1988-07-23 1988-09-01 Lucas Ind Plc A c generator fault detector
US5034728A (en) * 1990-02-21 1991-07-23 Taylor Walter E Low voltage warning apparatus and method
KR980004898A (ko) * 1996-06-29 1998-03-30 김광호 비디오 테이프의 잔량검출방법
DE19919331A1 (de) 1999-04-28 2000-11-02 Ellenberger & Poensgen Unterspannungsauslöser
ITMI20090310A1 (it) * 2009-03-03 2010-09-04 Dino Ghilardi Apparato e metodo di rilevazione di guasto in una linea di distribuzione polifase

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069558A (en) * 1957-08-12 1962-12-18 Westinghouse Electric Corp Frequency sensitive control circuit
CA644642A (en) * 1958-10-27 1962-07-10 F. Schuh Niles Undervoltage sensing circuit
US3340459A (en) * 1963-02-28 1967-09-05 Gen Electric Average voltage sensing circuit having highest phase voltage takeover
US3428864A (en) * 1963-04-29 1969-02-18 Ling Temco Vought Inc Multiphase voltage monitoring system
US3313984A (en) * 1963-10-11 1967-04-11 Gen Electric Instantaneous multiphase undervoltage sensing circuit
US3323071A (en) * 1964-07-09 1967-05-30 Nat Semiconductor Corp Semiconductor circuit arrangement utilizing integrated chopper element as zener-diode-coupled transistor
US3321754A (en) * 1964-08-20 1967-05-23 Gen Motors Corp Battery voltage indicating system
US3343130A (en) * 1964-08-27 1967-09-19 Fabri Tek Inc Selection matrix line capacitance recharge system
US3243658A (en) * 1965-07-21 1966-03-29 Hobart Brothers Co Electronic voltage detection and protection device
US3383522A (en) * 1965-08-30 1968-05-14 Westinghouse Electric Corp Undervoltage sensing circuit
US3480834A (en) * 1966-09-19 1969-11-25 Westinghouse Electric Corp Miniature overvoltage protection circuit having separate voltage sensing and time delay circuits
US3535591A (en) * 1968-01-02 1970-10-20 Sola Basic Ind Inc Monitoring system for polyphase electric supply system
FR1594306A (en:Method) * 1968-03-07 1970-06-01

Also Published As

Publication number Publication date
FR2149551A1 (en:Method) 1973-03-30
US3749944A (en) 1973-07-31
DE2239654C3 (de) 1978-10-05
DE2239654B2 (de) 1978-02-02
JPS4839949A (en:Method) 1973-06-12
DE2239654A1 (de) 1973-03-01

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