ZA89169B - Circuit breaker with over-temperature protection and low error i2t calculator - Google Patents

Circuit breaker with over-temperature protection and low error i2t calculator

Info

Publication number
ZA89169B
ZA89169B ZA89169A ZA89169A ZA89169B ZA 89169 B ZA89169 B ZA 89169B ZA 89169 A ZA89169 A ZA 89169A ZA 89169 A ZA89169 A ZA 89169A ZA 89169 B ZA89169 B ZA 89169B
Authority
ZA
South Africa
Prior art keywords
calculator
over
circuit breaker
temperature protection
low error
Prior art date
Application number
ZA89169A
Other languages
English (en)
Inventor
William John Murphy
John Murphy William
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 ZA89169B publication Critical patent/ZA89169B/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/907—Temperature compensation of semiconductor
ZA89169A 1988-01-25 1989-01-09 Circuit breaker with over-temperature protection and low error i2t calculator ZA89169B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/148,392 US4910631A (en) 1988-01-25 1988-01-25 Circuit breaker with over-temperature protection and low error I2 t calculator

Publications (1)

Publication Number Publication Date
ZA89169B true ZA89169B (en) 1989-11-29

Family

ID=22525579

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA89169A ZA89169B (en) 1988-01-25 1989-01-09 Circuit breaker with over-temperature protection and low error i2t calculator

Country Status (14)

Country Link
US (1) US4910631A (xx)
EP (1) EP0326334A3 (xx)
JP (1) JP2824522B2 (xx)
KR (1) KR0135422B1 (xx)
CN (1) CN1022008C (xx)
AU (1) AU607299B2 (xx)
BR (1) BR8900278A (xx)
CA (1) CA1320560C (xx)
IN (1) IN171398B (xx)
MX (1) MX163937B (xx)
NO (1) NO890234L (xx)
NZ (1) NZ227592A (xx)
PH (1) PH25078A (xx)
ZA (1) ZA89169B (xx)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393224B1 (de) * 1989-04-20 1994-02-16 Siemens Aktiengesellschaft Schaltungsanordnung zur Temperaturüberwachung von in einem Halbleiterschaltkreis integrierten Leistungsschalttransistoren
US5525985A (en) * 1990-12-28 1996-06-11 Eaton Corporation Sure chip
US5418677A (en) * 1990-12-28 1995-05-23 Eaton Corporation Thermal modeling of overcurrent trip during power loss
US5251157A (en) * 1990-12-28 1993-10-05 Westinghouse Electric Corp. Process for offset adjustment of a microprocessor based overcurrent protective device and apparatus
US5270898A (en) * 1990-12-28 1993-12-14 Westinghouse Electric Corp. Sure chip plus
ZA919656B (en) * 1990-12-28 1992-09-30 Westinghouse Electric Corp Voltage controlled power supply
US5815364A (en) * 1991-10-18 1998-09-29 Eaton Corporation Ultrasonic coil current regulator
GB9222308D0 (en) * 1992-10-23 1992-12-09 Smiths Industries Plc Electrical systems
US5723915A (en) * 1992-12-04 1998-03-03 Texas Instruments Incorporated Solid state power controller
US6694270B2 (en) * 1994-12-30 2004-02-17 Power Measurement Ltd. Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems
US5864458A (en) * 1995-09-14 1999-01-26 Raychem Corporation Overcurrent protection circuits comprising combinations of PTC devices and switches
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit
US5737160A (en) * 1995-09-14 1998-04-07 Raychem Corporation Electrical switches comprising arrangement of mechanical switches and PCT device
US5689395A (en) * 1995-09-14 1997-11-18 Raychem Corporation Overcurrent protection circuit
US5761020A (en) * 1996-01-29 1998-06-02 International Rectifier Corporation Fast switching smartfet
FR2753015B1 (fr) * 1996-08-30 1998-10-16 Schneider Electric Sa Declencheur electronique comportant une memoire thermique
WO2008147517A1 (en) * 2007-05-25 2008-12-04 Cooper Technologies Company Device protection using temperature compensation
CN101646290B (zh) * 2008-08-06 2012-10-31 夏普株式会社 Led驱动电路
KR102092159B1 (ko) * 2015-02-25 2020-03-24 엘에스산전 주식회사 인버터의 트립 제어 방법
EP3300199B1 (de) * 2016-09-22 2023-10-25 Siemens Aktiengesellschaft Verfahren und einrichtung zum ansteuern eines leistungsschalters für ein elektrisches energieversorgungsnetz im nulldurchgang des stromes
CN110320952B (zh) * 2019-07-22 2024-05-31 苏州欧普照明有限公司 一种过温保护电路及***

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588595A (en) * 1969-11-26 1971-06-28 Kidde & Co Walter Fluorescent lamp ballast and thermal protective means therefor
US3702418A (en) * 1971-09-30 1972-11-07 Texas Instruments Inc Protection system with manual reset means operable only on clearing of the fault
US3803455A (en) * 1973-01-02 1974-04-09 Gen Electric Electric circuit breaker static trip unit with thermal override
US3826951A (en) * 1973-01-30 1974-07-30 Westinghouse Electric Corp Circuit breaker with replaceable rating adjuster and interlock means
US3818275A (en) * 1973-01-30 1974-06-18 Westinghouse Electric Corp Circuit interrupter including improved trip circuit using current transformers
US4345292A (en) * 1978-07-10 1982-08-17 Eaton Corporation Minimum size, integral, A.C. overload current sensing, remote power controller
IT1193453B (it) * 1979-09-03 1988-06-22 Puntimatic Snc D Musiani Franc Dispositivo rivelatore di sovracorrente e di mancanza di fase
US4266259A (en) * 1979-09-04 1981-05-05 General Electric Company Long-time and short-time overcurrent signal processor for circuit breaker static trip units
FR2476923A1 (fr) * 1979-12-07 1981-08-28 Telemecanique Electrique Dispositif de simulation d'un phenomene variable dans le temps avec une constante de temps elevee, notamment la temperature d'une charge electrique
US4315295A (en) * 1979-12-17 1982-02-09 Gould Inc. Timing circuit for an overcurrent relay
US4347541A (en) * 1981-01-14 1982-08-31 Gte Laboratories Incorporated Circuit breaker
US4389619A (en) * 1981-02-02 1983-06-21 Rca Corporation Adjustable-gain current amplifier for temperature-independent trimming
US4394957A (en) * 1981-03-20 1983-07-26 Newton Iii John P Sensor control device
US4368420A (en) * 1981-04-14 1983-01-11 Fairchild Camera And Instrument Corp. Supply voltage sense amplifier
JPS6321146Y2 (xx) * 1981-04-30 1988-06-10
US4503408A (en) * 1982-11-10 1985-03-05 Westinghouse Electric Corp. Molded case circuit breaker apparatus having trip bar with flexible armature interconnection
US4489295A (en) * 1982-12-17 1984-12-18 Westinghouse Electric Corp. Circuit interrupter with improved electro-mechanical undervoltage release mechanism
US4695961A (en) * 1983-07-29 1987-09-22 Mitsubishi Denki Kabushiki Kaisha Solid state overcurrent detector
US4540961A (en) * 1983-12-19 1985-09-10 Westinghouse Electric Corp. Molded case circuit breaker with an apertured molded cross bar for supporting a movable electrical contact arm
US4539538A (en) * 1983-12-19 1985-09-03 Westinghouse Electric Corp. Molded case circuit breaker with movable upper electrical contact positioned by tension springs
US4528531A (en) * 1983-12-19 1985-07-09 Westinghouse Electric Corp. Molded case circuit breaker with improved operating mechanism
US4554427A (en) * 1983-12-19 1985-11-19 Westinghouse Electric Corp. Molded case circuit breaker with movable lower electrical contact
US4551597A (en) * 1983-12-19 1985-11-05 Westinghouse Electric Corp. Molded case circuit breaker with adjustable stationary lower electrical contact
US4553116A (en) * 1984-01-09 1985-11-12 Westinghouse Electric Corp. Molded case circuit breaker with resettable combined undervoltage and manual trip mechanism
US4553115A (en) * 1984-01-09 1985-11-12 Westinghouse Electric Corp. Molded case circuit breaker with single solenoid operator for rectilinear handle movement
US4554421A (en) * 1984-01-09 1985-11-19 Westinghouse Electric Corp. Molded case circuit breaker with handle lock
US4554423A (en) * 1984-01-09 1985-11-19 Westinghouse Electric Corp. Molded case circuit breaker with adjacent pole mechanisms spaced closer than adjacent terminals
US4550360A (en) * 1984-05-21 1985-10-29 General Electric Company Circuit breaker static trip unit having automatic circuit trimming
JPS6149616A (ja) * 1984-08-10 1986-03-11 シーメンス、アクチエンゲゼルシヤフト 温度保護用回路装置
US4563557A (en) * 1984-09-28 1986-01-07 Westinghouse Electric Corp. Molded case circuit breaker with a movable contact arm shock absorbing member
US4594491A (en) * 1984-09-28 1986-06-10 Westinghouse Electric Corp. Molded case circuit breaker with a trip mechanism having an intermediate latch lever
FR2578090B1 (fr) * 1985-02-25 1989-12-01 Merlin Gerin Disjoncteur a declencheur statique numerise a fonction de declenchement a temps inverse
US4603313A (en) * 1985-08-30 1986-07-29 Westinghouse Electric Corp. Circuit breaker with replaceable rating plug interlock and push to trip button
US4639701A (en) * 1985-08-30 1987-01-27 Westinghouse Electric Corp. Circuit breaker with interface flux shunt trip
EP0217225B1 (de) * 1985-09-30 1991-08-28 Siemens Aktiengesellschaft Trimmbare Schaltungsanordnung zur Erzeugung einer temperaturunabhängigen Referenzspannung
US4703389A (en) * 1986-04-10 1987-10-27 General Electric Company Static trip circuit breaker with automatic circuit trimming

Also Published As

Publication number Publication date
US4910631A (en) 1990-03-20
BR8900278A (pt) 1989-09-19
PH25078A (en) 1991-02-19
KR0135422B1 (ko) 1998-06-15
KR890012337A (ko) 1989-08-25
AU607299B2 (en) 1991-02-28
CN1035392A (zh) 1989-09-06
MX163937B (es) 1992-07-02
NZ227592A (en) 1991-07-26
EP0326334A2 (en) 1989-08-02
CN1022008C (zh) 1993-09-01
CA1320560C (en) 1993-07-20
NO890234D0 (no) 1989-01-19
AU2838289A (en) 1989-07-27
JP2824522B2 (ja) 1998-11-11
NO890234L (no) 1989-07-26
EP0326334A3 (en) 1990-12-12
IN171398B (xx) 1992-10-03
JPH01227615A (ja) 1989-09-11

Similar Documents

Publication Publication Date Title
ZA89169B (en) Circuit breaker with over-temperature protection and low error i2t calculator
GB8901855D0 (en) Solid state current sensing circuit and protection circuit and protection circuit
AU6834381A (en) Circuit interrupter with digital trip unit and power supply
NZ217548A (en) Overcurrent circuit breaker with camming latch
PH18371A (en) Circuit interrupter with solid state digital trip unit and positive power-up reature
ZA811644B (en) Circuit interrupter with digital trip unit and style designator circuit
GB8829276D0 (en) A transient protection circuit
AU586734B2 (en) Circuit breaker with contact support and arc runner
DE3376374D1 (en) H-switch circuit with an overcurrent protection circuit
EP0167172A3 (en) Overcurrent protection circuit overcurrent protection circuit
AU579937B2 (en) Molded case circuit breaker with combined position indicator and handle barrier
GB8628772D0 (en) Overcurrent protection circuit
PH24562A (en) Circuit breaker with fast trip unit
DE3665512D1 (en) Overcurrent circuit breaker
DE3681480D1 (de) Elektronische frankiermaschine mit einschalt- und ausschalt-schutzschaltkreis.
GB2236919B (en) Overload and short-circuit protection circuit
AU4127889A (en) Moulded case circuit breaker having a line conductor with a U-shaped slot and a tapered peninsula portion
DE3261689D1 (en) Circuit breaker with built-in fuse and disconnection switch
GB8816631D0 (en) Circuit protection arrangement
AU4812885A (en) Self-resetting electronic overcurrent protector
IE890011L (en) Circuit breaker with over-temperature protection
ZA888791B (en) Circuit breaker with overcurrent protection
AU569798B2 (en) Overcurrent protection circuit
PL142127B2 (en) Resistance measuring circuit with input protection
PL274254A1 (en) Overcurrent protection and overload indication circuit for a bistable output amplifier intended to be interfaced with a computer