IE810729L - Current interrupter - Google Patents

Current interrupter

Info

Publication number
IE810729L
IE810729L IE810729A IE72981A IE810729L IE 810729 L IE810729 L IE 810729L IE 810729 A IE810729 A IE 810729A IE 72981 A IE72981 A IE 72981A IE 810729 L IE810729 L IE 810729L
Authority
IE
Ireland
Prior art keywords
time
display
operator
entered
adjusted
Prior art date
Application number
IE810729A
Other versions
IE51320B1 (en
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
Priority claimed from US06/140,558 external-priority patent/US4331997A/en
Priority claimed from US06/140,553 external-priority patent/US4351012A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of IE810729L publication Critical patent/IE810729L/en
Publication of IE51320B1 publication Critical patent/IE51320B1/en

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
    • H02H3/006—Calibration or setting of parameters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H2071/006—Provisions for user interfaces for electrical protection devices

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

An electronic, fault-current circuit interrupter having a predetermined, but adjustable time-current characteristic includes means (e.g. 112-118) enabling an operator to enter and adjust parameter values defining said time-current characteristics, and means (e.g. 80) providing a substantially real-time numeric display for each parameter value as it is being entered or adjusted. After entry, a continuous sequential display of the entered parameter values is provided but is temporarily interrupted during subsequent adjustment in order for said real-time display of the parameter value being adjusted to occur. A hysteresis feature is provided requiring a significant adjustment by the operator to be made before a different parameter setting is selected. <IMAGE> [GB2073972A]
IE729/81A 1980-04-15 1981-03-31 Circuit interrupter with digital trip unit and means to enter trip settings IE51320B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/140,558 US4331997A (en) 1980-04-15 1980-04-15 Circuit interrupter with digital trip unit and potentiometers for parameter entry
US06/140,553 US4351012A (en) 1980-04-15 1980-04-15 Circuit interrupter with digital trip unit and means to enter trip settings

Publications (2)

Publication Number Publication Date
IE810729L true IE810729L (en) 1981-10-15
IE51320B1 IE51320B1 (en) 1986-12-10

Family

ID=26838284

Family Applications (1)

Application Number Title Priority Date Filing Date
IE729/81A IE51320B1 (en) 1980-04-15 1981-03-31 Circuit interrupter with digital trip unit and means to enter trip settings

Country Status (10)

Country Link
AU (1) AU548557B2 (en)
BR (1) BR8102308A (en)
CH (1) CH659732A5 (en)
DE (1) DE3114548A1 (en)
FR (1) FR2480519B1 (en)
GB (1) GB2073972B (en)
IE (1) IE51320B1 (en)
IT (1) IT1169239B (en)
MX (1) MX149096A (en)
NZ (1) NZ196612A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578113B1 (en) * 1985-02-25 1988-04-15 Merlin Gerin DIGITAL STATIC TRIGGER WITH OPTIONAL FUNCTIONS FOR AN ELECTRIC CIRCUIT BREAKER
US4827369A (en) * 1987-02-20 1989-05-02 Westinghouse Electric Corp. Circuit interrupter apparatus with a selectable display means
US4809125A (en) * 1987-02-20 1989-02-28 Westinghouse Electric Corp. Circuit interrupter apparatus with a style saving rating plug
US4751606A (en) * 1987-02-20 1988-06-14 Westinghouse Electric Corp. Circuit interrupter apparatus with a battery backup and reset circuit
US4794484A (en) * 1987-02-20 1988-12-27 Westinghouse Electric Corp. Circuit interrupter apparatus with a style saving override circuit
US4752853A (en) * 1987-02-20 1988-06-21 Westinghouse Electric Corp. Circuit interrupter apparatus with an integral trip curve display
US4870531A (en) * 1988-08-15 1989-09-26 General Electric Company Circuit breaker with removable display and keypad
DE3910718A1 (en) * 1989-04-03 1990-10-04 Siemens Ag MONITORING DEVICE WITH SWITCHING DEVICE
DE102005046925A1 (en) * 2005-09-30 2007-04-19 Siemens Ag Switching device for switching at least one current

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020124B (en) * 1978-04-27 1982-08-25 Tokyo Shibaura Electric Co Overcurrent protection
JPS55127821A (en) * 1979-03-27 1980-10-03 Tokyo Shibaura Electric Co Digital protection relay unit

Also Published As

Publication number Publication date
FR2480519B1 (en) 1988-07-15
GB2073972B (en) 1983-09-28
DE3114548A1 (en) 1982-02-18
CH659732A5 (en) 1987-02-13
IT1169239B (en) 1987-05-27
DE3114548C2 (en) 1992-10-22
IE51320B1 (en) 1986-12-10
FR2480519A1 (en) 1981-10-16
AU548557B2 (en) 1985-12-19
BR8102308A (en) 1981-12-08
NZ196612A (en) 1985-03-20
AU6873181A (en) 1981-10-22
MX149096A (en) 1983-08-24
GB2073972A (en) 1981-10-21
IT8121164A0 (en) 1981-04-14

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Legal Events

Date Code Title Description
MM4A Patent lapsed