IT1105571B - Apaprecchiatura per la rilevazione di un segnale di fase alto da un circuito di carico ac (in alternata) multifase - Google Patents

Apaprecchiatura per la rilevazione di un segnale di fase alto da un circuito di carico ac (in alternata) multifase

Info

Publication number
IT1105571B
IT1105571B IT41588/78A IT4158878A IT1105571B IT 1105571 B IT1105571 B IT 1105571B IT 41588/78 A IT41588/78 A IT 41588/78A IT 4158878 A IT4158878 A IT 4158878A IT 1105571 B IT1105571 B IT 1105571B
Authority
IT
Italy
Prior art keywords
phase
detection
load circuit
phase signal
signal
Prior art date
Application number
IT41588/78A
Other languages
English (en)
Other versions
IT7841588A0 (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
Publication of IT7841588A0 publication Critical patent/IT7841588A0/it
Application granted granted Critical
Publication of IT1105571B publication Critical patent/IT1105571B/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
    • H02H3/083—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 for three-phase systems
    • 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)
  • Measurement Of Current Or Voltage (AREA)
IT41588/78A 1977-06-02 1978-06-01 Apaprecchiatura per la rilevazione di un segnale di fase alto da un circuito di carico ac (in alternata) multifase IT1105571B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/802,930 US4139878A (en) 1977-06-02 1977-06-02 Apparatus for sensing a high phase signal from a multi-phase AC load circuit

Publications (2)

Publication Number Publication Date
IT7841588A0 IT7841588A0 (it) 1978-06-01
IT1105571B true IT1105571B (it) 1985-11-04

Family

ID=25185123

Family Applications (1)

Application Number Title Priority Date Filing Date
IT41588/78A IT1105571B (it) 1977-06-02 1978-06-01 Apaprecchiatura per la rilevazione di un segnale di fase alto da un circuito di carico ac (in alternata) multifase

Country Status (8)

Country Link
US (1) US4139878A (it)
JP (1) JPS541850A (it)
CA (1) CA1101065A (it)
DE (1) DE2823444A1 (it)
FR (1) FR2393452A1 (it)
GB (1) GB1605055A (it)
IT (1) IT1105571B (it)
NL (1) NL7805976A (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245185A (en) * 1979-03-23 1981-01-13 Westinghouse Electric Corp. Solid state circuit breaker with three phase capability
US4300182A (en) * 1979-08-09 1981-11-10 Schweitzer Edmund O Iii Metering and protection system for an A.C. power system
DE3225829A1 (de) * 1982-03-31 1983-10-13 Sprecher & Schuh AG, 5001 Aarau, Aargau Schutzrelais-schaltung
US4698621A (en) * 1984-09-25 1987-10-06 Masot Oscar V Circuit breaker panels with alarm system
US4715051A (en) * 1985-04-12 1987-12-22 Giardina Joseph J Electronic potentiometer
US4672246A (en) * 1986-03-10 1987-06-09 Honeywell Inc. Low offset MOSFET transistor switch control
US4682061A (en) * 1986-05-01 1987-07-21 Honeywell Inc. MOSFET transistor switch control
US5193042A (en) * 1990-12-07 1993-03-09 Dielpromex S.A. De C.V. Automatic energizing damping device
US5925888A (en) * 1997-05-08 1999-07-20 Paragon Electric Company, Inc. Optocoupler input expansion circuit
EP2212706B1 (en) 2007-11-13 2018-05-16 Emerson Climate Technologies, Inc. Three-phase detection module
US20090283848A1 (en) * 2008-05-13 2009-11-19 Jds Uniphase Corporation Photodiode Assembly With Improved Electrostatic Discharge Damage Threshold
TWM391250U (en) * 2010-06-22 2010-10-21 Tpv Electronics (Fujian) Co Ltd Light-emitting diode (LED) control circuit
DE102014101353B4 (de) * 2014-02-04 2018-01-25 Phoenix Contact Gmbh & Co. Kg Weitbereichs-Eingangsschaltung
FR3032837B1 (fr) * 2015-02-17 2017-02-24 Commissariat Energie Atomique Systeme de protection selective d'un reseau electrique et procede de protection associe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1424455A (fr) * 1963-11-29 1966-01-14 Texas Instruments Inc Dispositif de couplage électro-optique
DE1264513C2 (de) * 1963-11-29 1973-01-25 Texas Instruments Inc Bezugspotentialfreier gleichstromdifferenzverstaerker
US3610938A (en) * 1969-10-07 1971-10-05 English Electric Co Ltd Apparatus for monitoring operational parameters of high-voltage valves
US3758826A (en) * 1970-10-01 1973-09-11 G Zizola Photoelectronic safety device
US3811073A (en) * 1973-03-05 1974-05-14 Westinghouse Electric Corp Alternating current sensing circuit and method
US3925709A (en) * 1973-08-13 1975-12-09 Westinghouse Electric Corp Overcurrent protection circuit for AC systems
US3999087A (en) * 1975-08-15 1976-12-21 Westinghouse Electric Corporation Missing phase detection circuit for use with three-phase power sources

Also Published As

Publication number Publication date
CA1101065A (en) 1981-05-12
JPS541850A (en) 1979-01-09
GB1605055A (en) 1981-12-16
IT7841588A0 (it) 1978-06-01
DE2823444A1 (de) 1978-12-14
FR2393452A1 (fr) 1978-12-29
US4139878A (en) 1979-02-13
NL7805976A (nl) 1978-12-05

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