IT1018353B - Circuito di protezione da sovra correnti per sistemi c.a. - Google Patents

Circuito di protezione da sovra correnti per sistemi c.a.

Info

Publication number
IT1018353B
IT1018353B IT41661/74A IT4166174A IT1018353B IT 1018353 B IT1018353 B IT 1018353B IT 41661/74 A IT41661/74 A IT 41661/74A IT 4166174 A IT4166174 A IT 4166174A IT 1018353 B IT1018353 B IT 1018353B
Authority
IT
Italy
Prior art keywords
systems
protection circuit
current protection
over current
over
Prior art date
Application number
IT41661/74A
Other languages
English (en)
Italian (it)
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 IT1018353B publication Critical patent/IT1018353B/it

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
    • H02H3/08—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 excess current
    • H02H3/093—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 excess current with timing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
IT41661/74A 1973-08-13 1974-08-09 Circuito di protezione da sovra correnti per sistemi c.a. IT1018353B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US387993A US3925709A (en) 1973-08-13 1973-08-13 Overcurrent protection circuit for AC systems

Publications (1)

Publication Number Publication Date
IT1018353B true IT1018353B (it) 1977-09-30

Family

ID=23532178

Family Applications (1)

Application Number Title Priority Date Filing Date
IT41661/74A IT1018353B (it) 1973-08-13 1974-08-09 Circuito di protezione da sovra correnti per sistemi c.a.

Country Status (8)

Country Link
US (1) US3925709A (en])
JP (2) JPS5045252A (en])
CA (1) CA1032604A (en])
DE (1) DE2438616A1 (en])
FR (1) FR2241153B1 (en])
GB (1) GB1462410A (en])
IT (1) IT1018353B (en])
NL (1) NL7410597A (en])

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247790A (en) * 1976-01-22 1981-01-27 Westinghouse Electric Corp. Failsafe train vehicle control signal threshold detector apparatus
JPS52100125U (en]) * 1976-01-28 1977-07-29
US4181863A (en) * 1976-04-03 1980-01-01 Ferranti Limited Photodiode circuit arrangements
US4112286A (en) * 1976-06-28 1978-09-05 Firing Circuits, Inc. Power circuit for induction heating
JPS533796A (en) * 1976-06-30 1978-01-13 Sharp Corp Battery driven apparatus
JPS533636A (en) * 1976-07-01 1978-01-13 Takeda Riken Ind Co Ltd Aac power service interruption detector
GB1594121A (en) * 1977-02-08 1981-07-30 Ass Eng Ltd Electrical protection circuits
US4139878A (en) * 1977-06-02 1979-02-13 Westinghouse Electric Corp. Apparatus for sensing a high phase signal from a multi-phase AC load circuit
US4153872A (en) * 1977-06-16 1979-05-08 P. R. Mallory & Co. Inc. Crest firing means
NL178634C (nl) * 1978-01-02 1986-04-16 Philips Nv Inrichting voor het detecteren van ongewenste signaalcombinaties van twee signaallampen bij verkeerslichten.
DE2831479A1 (de) * 1978-07-18 1980-01-31 Bosch Gmbh Robert Schaltungsanordnung zur einstellung des stromes von einer batterie zu einem elektromotor
US4250501A (en) * 1978-07-28 1981-02-10 Kurt Pokrandt Current sensing circuitry
US4205358A (en) * 1978-10-26 1980-05-27 General Electric Company Ground fault protection system
US4245185A (en) * 1979-03-23 1981-01-13 Westinghouse Electric Corp. Solid state circuit breaker with three phase capability
US4335413A (en) * 1980-04-15 1982-06-15 Westinghouse Electric Corp. Circuit interrupter with remote indicator and power supply
US4338647A (en) * 1980-04-15 1982-07-06 Westinghouse Electric Corp. Circuit interrupter with digital trip unit and optically-coupled data input/output system
FR2504043A1 (fr) * 1981-04-16 1982-10-22 Renault Dispositif electronique de securite notamment pour machines a souder
JPS56174992U (en]) * 1981-06-05 1981-12-24
US4363064A (en) * 1981-07-27 1982-12-07 The United States Of America As Represented By The Secretary Of The Navy Overcurrent protection system
US4471323A (en) * 1981-11-19 1984-09-11 Trilling Ted R Protection circuits for complementary direct-coupled amplifiers
CA1226622A (en) * 1983-04-18 1987-09-08 United Technologies Corporation Current overload detector
DK165105C (da) * 1985-08-19 1993-02-22 Smidth & Co As F L Fremgangsmaade og kredsloeb til beskyttelsestaending af thyristorer i en impulsgenerator
US4825330A (en) * 1987-10-06 1989-04-25 The United States Of America As Represented By The Department Of Health And Human Services Ultra-fast solid state power interrupter
US4835652A (en) * 1988-07-06 1989-05-30 Westinghouse Electric Corp. Bi-directional DC power controller with fault protection
US4943761A (en) * 1988-07-06 1990-07-24 Westinghouse Electric Corp. Current limited DC power controller
JPH0217928U (en]) * 1988-07-19 1990-02-06
DE3841186A1 (de) * 1988-12-07 1990-06-13 Asea Brown Boveri Einrichtung fuer elektrische verbraucher
FR2643195B1 (fr) * 1989-02-15 1992-12-31 Univ Alsace Procede et dispositif de protection d'un circuit ou reseau electrique a l'aide d'un disjoncteur a courant differentiel
DE3929236A1 (de) * 1989-08-24 1991-02-28 Walter Becker Elekronik Transp Schutzschaltung fuer stromanschlusseinrichtungen insbesondere fuer wechselstromverbraucher
US5181155A (en) * 1990-08-30 1993-01-19 Beg Mirza A Overcurrent trip circuit
ZA919656B (en) * 1990-12-28 1992-09-30 Westinghouse Electric Corp Voltage controlled power supply
US5418677A (en) * 1990-12-28 1995-05-23 Eaton Corporation Thermal modeling of overcurrent trip during power loss
US5815364A (en) * 1991-10-18 1998-09-29 Eaton Corporation Ultrasonic coil current regulator
US5270898A (en) * 1990-12-28 1993-12-14 Westinghouse Electric Corp. Sure chip plus
US5251157A (en) * 1990-12-28 1993-10-05 Westinghouse Electric Corp. Process for offset adjustment of a microprocessor based overcurrent protective device and apparatus
US5525985A (en) * 1990-12-28 1996-06-11 Eaton Corporation Sure chip
US6011679A (en) * 1998-09-30 2000-01-04 Digital Equipment Corp. Methods and apparatus for controlling a power supply with improved techniques for providing protection limits
RU2153750C1 (ru) * 1999-01-05 2000-07-27 Акционерное общество закрытого типа "Контактор" Устройство для максимальной токовой защиты электроустановки переменного тока
JP4266835B2 (ja) * 2004-01-05 2009-05-20 アルパイン株式会社 スピーカシステム
US10374421B2 (en) 2017-03-24 2019-08-06 Abb Schweiz Ag Systems and methods for line voltage drop compensation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4216175Y1 (en]) * 1964-12-11 1967-09-19
US3351818A (en) * 1965-01-08 1967-11-07 American Gas Ass A. c. -operable voltage threshold circuits
US3480834A (en) * 1966-09-19 1969-11-25 Westinghouse Electric Corp Miniature overvoltage protection circuit having separate voltage sensing and time delay circuits
JPS5528200B1 (en]) * 1970-09-02 1980-07-25
GB1379223A (en) * 1971-02-01 1975-01-02 Rca Corp Overcurrent protection circuit for a voltage regulator
US3693060A (en) * 1971-04-13 1972-09-19 Philips Corp Solid-state relay using light-emitting diodes
US3783354A (en) * 1972-09-29 1974-01-01 Nasa Phase protection system for ac power lines
US3818275A (en) * 1973-01-30 1974-06-18 Westinghouse Electric Corp Circuit interrupter including improved trip circuit using current transformers
US3811073A (en) * 1973-03-05 1974-05-14 Westinghouse Electric Corp Alternating current sensing circuit and method

Also Published As

Publication number Publication date
FR2241153B1 (en]) 1981-08-07
DE2438616A1 (de) 1975-03-06
CA1032604A (en) 1978-06-06
JPS5045252A (en]) 1975-04-23
NL7410597A (nl) 1975-02-17
JPS54101455U (en]) 1979-07-17
FR2241153A1 (en]) 1975-03-14
GB1462410A (en) 1977-01-26
US3925709A (en) 1975-12-09

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