RO81307B - DISPOZITIV DE DETECTARE A SUPRACURENTILOR SI A îNTRERUPERII UNEIA SAU A DOUA FAZE - Google Patents

DISPOZITIV DE DETECTARE A SUPRACURENTILOR SI A îNTRERUPERII UNEIA SAU A DOUA FAZE

Info

Publication number
RO81307B
RO81307B RO102037A RO10203780A RO81307B RO 81307 B RO81307 B RO 81307B RO 102037 A RO102037 A RO 102037A RO 10203780 A RO10203780 A RO 10203780A RO 81307 B RO81307 B RO 81307B
Authority
RO
Romania
Prior art keywords
circuit
phases
fault
rectifiers
output
Prior art date
Application number
RO102037A
Other languages
English (en)
Other versions
RO81307A (ro
Inventor
Ideo Volta
Original Assignee
La Puntimatic S.N.C. Di Musiani Franco & C
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 La Puntimatic S.N.C. Di Musiani Franco & C filed Critical La Puntimatic S.N.C. Di Musiani Franco & C
Publication of RO81307A publication Critical patent/RO81307A/ro
Publication of RO81307B publication Critical patent/RO81307B/ro

Links

Classifications

    • 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
    • H02H7/08—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 for dynamo-electric motors
    • H02H7/085—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 for dynamo-electric motors against excessive load
    • 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
    • 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
    • H02H7/08—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 for dynamo-electric motors
    • H02H7/09—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 for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Motor And Converter Starters (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

Inventia se refera la un dispozitiv de detectare a supracurentilor si întreruperii uneia sau a doua faze cu cîte un transformator de curent ape fiecare faza care prin redresoare amplificatoare transmit semnale unui circuit logic cu doua nivele de semnal logic la iesire, aceasta comandînd printr-un circuit de întîrziere un releu care determina stabilirea sau întreruperea circuitului de actionare a întrerupatorului circuitului de actionare a întrerupatorului de protectie a retelei. De la iesirea redresoarelor semnalele sînt transmise în paralel la circutul de întîrziere si printr-un comparator cu un semnal limita etalon sau printr-un circuit mai complex, cu memorie, de asemenea, de comparare cu semnalul limita.
RO102037A 1979-09-03 1980-08-25 DISPOZITIV DE DETECTARE A SUPRACURENTILOR SI A îNTRERUPERII UNEIA SAU A DOUA FAZE RO81307B (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT03487/79A IT1193453B (it) 1979-09-03 1979-09-03 Dispositivo rivelatore di sovracorrente e di mancanza di fase

Publications (2)

Publication Number Publication Date
RO81307A RO81307A (ro) 1983-02-15
RO81307B true RO81307B (ro) 1983-02-28

Family

ID=11108286

Family Applications (1)

Application Number Title Priority Date Filing Date
RO102037A RO81307B (ro) 1979-09-03 1980-08-25 DISPOZITIV DE DETECTARE A SUPRACURENTILOR SI A îNTRERUPERII UNEIA SAU A DOUA FAZE

Country Status (6)

Country Link
US (1) US4354216A (ro)
EP (1) EP0025022A1 (ro)
JP (1) JPS5638929A (ro)
ES (1) ES8105891A1 (ro)
IT (1) IT1193453B (ro)
RO (1) RO81307B (ro)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381531A (en) * 1981-07-02 1983-04-26 Carrier Corporation Alternating current motor protection system
US4423459A (en) * 1982-04-05 1983-12-27 Siemens-Allis, Inc. Solid state circuit protection system and method
US4910631A (en) * 1988-01-25 1990-03-20 Westinghouse Electric Corp. Circuit breaker with over-temperature protection and low error I2 t calculator
US4833563A (en) * 1988-04-01 1989-05-23 General Electric Company Molded case circuit breaker actuator-accessory module
US5172329A (en) * 1990-06-14 1992-12-15 Rahman Azizur M Microprocessor-based digital protective relay for power transformers
US5222009A (en) * 1990-07-30 1993-06-22 Eaton Corporation Solid state overload relay
US5181155A (en) * 1990-08-30 1993-01-19 Beg Mirza A Overcurrent trip circuit
US5229697A (en) * 1992-01-30 1993-07-20 Siemens Industrial Automation, Inc. Sampling bipolar peak detector for sensing a non-symmetrical decay of an AC voltage signal
IT1262048B (it) * 1993-03-24 1996-06-18 Rino Calzolari Gruppo di protezione a doppia rottura per impianti elettrici, con valvola fusibile, bobina elettromagnetica e temporizzatore.
ATE385521T1 (de) * 1998-08-04 2008-02-15 Metabolix Inc Herstellung von polyhydroxyalkanoaten aus polyolen
US6798286B2 (en) * 2002-12-02 2004-09-28 Broadcom Corporation Gain control methods and systems in an amplifier assembly
US7260377B2 (en) * 2002-12-02 2007-08-21 Broadcom Corporation Variable-gain low noise amplifier for digital terrestrial applications
US7309998B2 (en) 2002-12-02 2007-12-18 Burns Lawrence M Process monitor for monitoring an integrated circuit chip
US8437720B2 (en) * 2002-12-02 2013-05-07 Broadcom Corporation Variable-gain low noise amplifier for digital terrestrial applications
US7471941B2 (en) * 2002-12-02 2008-12-30 Broadcom Corporation Amplifier assembly including variable gain amplifier, parallel programmable amplifiers, and AGC
JP3851617B2 (ja) * 2003-05-27 2006-11-29 ファナック株式会社 モータ駆動装置
US7038423B2 (en) * 2004-05-07 2006-05-02 Bay Controls, Inc. Apparatus and method for ride through for AC induction motors
US7161375B2 (en) * 2005-02-23 2007-01-09 International Rectifier Corporation Phase-loss detection for rotating field machine
DE202007006049U1 (de) * 2007-04-25 2008-08-28 Metabowerke Gmbh Bearbeitungstisch für Handwerkzeugmaschinen und Maschinenschalter
US20090112635A1 (en) * 2007-10-30 2009-04-30 Kenneth Rubinstein Foreign Non-Qualified Deferred Compensation Hybrid Trust Strategy
US8107204B2 (en) * 2007-11-13 2012-01-31 Emerson Climate Technologies, Inc. Three-phase detection module
US8031446B2 (en) * 2008-08-28 2011-10-04 Delta Electronics, Inc. Method of detecting output phase loss for motor driver
US9755568B2 (en) * 2014-07-09 2017-09-05 Nidec Motor Corporation System and method for detecting loss of input phase by sensing before power rectifier
CN110703124B (zh) * 2019-08-05 2021-12-14 国创移动能源创新中心(江苏)有限公司 一种用于三相电源及负载缺相检测和保护的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581179A (en) * 1969-09-11 1971-05-25 Borg Warner Multiphase motor control system with overcurrent and undercurrent protection
IT1013821B (it) * 1974-05-28 1977-03-30 Electronic Design Snc Di Giuse Dispositivo salvamotore per moto ri trifase con interruzione di corrente di fase
US3996499A (en) * 1974-09-09 1976-12-07 Westinghouse Electric Corporation Zener diode effect on long acceleration module
US3942074A (en) * 1974-09-27 1976-03-02 General Electric Company Static overcurrent relay
US4000446A (en) * 1975-06-04 1976-12-28 Borg-Warner Corporation Overload protection system for three-phase submersible pump motor
US4006387A (en) * 1975-09-22 1977-02-01 The United States Of America As Represented By The Secretary Of The Air Force Low power solid state three-phase overcurrent/undercurrent protection circuit
DE2611014B2 (de) * 1976-03-13 1977-12-29 Siemens AG, 1000 Berlin und 8000 München Elektronisches ueberstromrelais
US4103317A (en) * 1976-06-07 1978-07-25 Val Tech Inc. Motor protector providing phase failure and overload cutoff for three-phase variable voltage variable frequency motor

Also Published As

Publication number Publication date
IT7903487A0 (it) 1979-09-03
IT1193453B (it) 1988-06-22
EP0025022A1 (en) 1981-03-11
RO81307A (ro) 1983-02-15
US4354216A (en) 1982-10-12
JPS5638929A (en) 1981-04-14
ES494715A0 (es) 1981-06-16
ES8105891A1 (es) 1981-06-16

Similar Documents

Publication Publication Date Title
RO81307B (ro) DISPOZITIV DE DETECTARE A SUPRACURENTILOR SI A îNTRERUPERII UNEIA SAU A DOUA FAZE
CA1128984A (en) Relay protection device with a blocking function for each phase
US4296452A (en) Multiphase fault protection circuitry with variable functional level detection
US4254444A (en) Multiphase undervoltage tripping circuitry for electrical power supply networks
WO2001029948A8 (en) Improved restraint-type differential relay
ES466782A1 (es) Rele direccional para la vigilancia de al menos una linea detransporte de energia electrica alterna
DE3382100D1 (de) Steuerschaltung fuer einen schalter.
US3379934A (en) Electrical protective relays
SE7406931L (ro)
GB1396644A (en) Control systems
US3488559A (en) Device for the detection of defects to the ground and the protection of line portions of a three-phase system having a ground neutral conductor
GB1275560A (en) Selector circuit for determining faults in polyphase transmission systems
JPS466177A (ro)
GB1452616A (en) Phase comparison relaying apparatus with two-count by-pass circuit
GB1106843A (en) Apparatus for correcting timing errors in television signals
GB1438192A (en) Breaker failure relay device
US3612952A (en) Time delay signal device especially for phase comparison protective relaying system
Harder et al. A new high-speed distance-type carrier-pilot relay system
GB746443A (en) Improvements in or relating to control systems for railway car retarders
US2562485A (en) Control and indicating system for circuit breakers
US4044202A (en) Plural frequency signalling systems
US1849830A (en) Protective arrangement
US2385219A (en) Protection of electric systems
ES420367A1 (es) Dispositivo de automatismo de reanudacion del servicio parared o arteria de distribucion de energia electrica de ten- sion media.
SU520720A2 (ru) Устройство автоматического включени регистрирующей аппаратуры в лини х св зи с частотной модул цией