CA2167007A1 - Removable keypad for an electronic circuit breaker - Google Patents

Removable keypad for an electronic circuit breaker

Info

Publication number
CA2167007A1
CA2167007A1 CA002167007A CA2167007A CA2167007A1 CA 2167007 A1 CA2167007 A1 CA 2167007A1 CA 002167007 A CA002167007 A CA 002167007A CA 2167007 A CA2167007 A CA 2167007A CA 2167007 A1 CA2167007 A1 CA 2167007A1
Authority
CA
Canada
Prior art keywords
keypad
electronic circuit
circuit breaker
removable
trip unit
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002167007A
Other languages
French (fr)
Other versions
CA2167007C (en
Inventor
Edwin J. Collin
Robert C. Turton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of CA2167007A1 publication Critical patent/CA2167007A1/en
Application granted granted Critical
Publication of CA2167007C publication Critical patent/CA2167007C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H2071/7472—Means for adjusting the conditions under which the device will function to provide protection with antitamper means for avoiding unauthorised setting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/022—Part of keyboard not operable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/08—Actuators composed of different parts
    • H01H2221/082—Superimposed actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/04—Casings portable; hand held
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/032—Anti-tamper
    • 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

Abstract

This invention relates to the removable keypad that controls the electronic trip unit used within state-of-art electronic circuit breakers. The keypad provides a convenient means of inputting and displaying relevant circuit interruption information. Unauthorized access to the trip unit settings is prevented by blocking off the keypad "ENTER" key while still allowing access to the keypad's remaining function keys.
CA002167007A 1995-01-30 1996-01-11 Removable keypad for an electronic circuit breaker Expired - Fee Related CA2167007C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/380,773 1995-01-30
US08/380,773 US5544959A (en) 1995-01-30 1995-01-30 Removable keypad for an electronic circuit breaker

Publications (2)

Publication Number Publication Date
CA2167007A1 true CA2167007A1 (en) 1996-07-31
CA2167007C CA2167007C (en) 2005-03-22

Family

ID=23502383

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002167007A Expired - Fee Related CA2167007C (en) 1995-01-30 1996-01-11 Removable keypad for an electronic circuit breaker

Country Status (5)

Country Link
US (1) US5544959A (en)
JP (1) JPH08305472A (en)
CN (1) CN1052349C (en)
CA (1) CA2167007C (en)
DE (1) DE19602761A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100202142B1 (en) * 1996-06-25 1999-06-15 윤종용 Telephone having separating ketpad & the operating method
US6518866B1 (en) * 1997-07-30 2003-02-11 General Electric Company Circuit breaker compartment door
US6404467B1 (en) * 1999-08-30 2002-06-11 3Com Corporation Liquid crystal display apparatus and method
US6406328B1 (en) * 2000-05-08 2002-06-18 General Electric Company Remote LCD adapter and method for electronic circuit breakers
EP2013892B1 (en) * 2006-04-29 2014-06-11 Ellenberger & Poensgen GmbH Electrical circuit breaker
US8050713B2 (en) * 2007-10-03 2011-11-01 Harris Corporation Keypad display unit
US8018092B2 (en) * 2008-04-15 2011-09-13 General Electric Company System and method for managing power supply to a circuit breaker control unit
KR101240124B1 (en) 2009-03-10 2013-03-07 엘에스산전 주식회사 Protection relay
DE102016221093B4 (en) * 2016-10-26 2022-12-08 Siemens Aktiengesellschaft circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539541A (en) * 1983-10-21 1985-09-03 Westinghouse Electric Corp. Terminal connector assembly for electric control device
US4589052A (en) * 1984-07-17 1986-05-13 General Electric Company Digital I2 T pickup, time bands and timing control circuits for static trip circuit breakers
US4870531A (en) * 1988-08-15 1989-09-26 General Electric Company Circuit breaker with removable display and keypad

Also Published As

Publication number Publication date
DE19602761A1 (en) 1996-08-01
CN1052349C (en) 2000-05-10
CN1135672A (en) 1996-11-13
JPH08305472A (en) 1996-11-22
US5544959A (en) 1996-08-13
CA2167007C (en) 2005-03-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed