JPS464428A - - Google Patents

Info

Publication number
JPS464428A
JPS464428A JP2041571A JP2041571A JPS464428A JP S464428 A JPS464428 A JP S464428A JP 2041571 A JP2041571 A JP 2041571A JP 2041571 A JP2041571 A JP 2041571A JP S464428 A JPS464428 A JP S464428A
Authority
JP
Japan
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.)
Pending
Application number
JP2041571A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS464428A publication Critical patent/JPS464428A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP2041571A 1970-04-07 1971-04-05 Pending JPS464428A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2619670 US3678372A (en) 1970-04-07 1970-04-07 Portable circuit breaker tester for calibrating a circuit breaker over a wide range of current

Publications (1)

Publication Number Publication Date
JPS464428A true JPS464428A (enrdf_load_stackoverflow) 1971-11-15

Family

ID=21830417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2041571A Pending JPS464428A (enrdf_load_stackoverflow) 1970-04-07 1971-04-05

Country Status (2)

Country Link
US (2) US3678372A (enrdf_load_stackoverflow)
JP (1) JPS464428A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141421U (enrdf_load_stackoverflow) * 1974-05-08 1975-11-21
JPS6292544U (enrdf_load_stackoverflow) * 1985-12-02 1987-06-13
JPH01158157A (ja) * 1987-12-15 1989-06-21 Taisei Corp 網状鉄筋の継手構造

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894284A (en) * 1974-04-29 1975-07-08 Communic Mfg Current flow test apparatus
US4177419A (en) * 1976-03-15 1979-12-04 Bbc Brown Boveri & Company Ltd. Test apparatus for checking the response of protective relays
US4128804A (en) * 1978-01-19 1978-12-05 General Electric Company Ground fault defeat cable for high current static trip circuit breaker test sets
US4209739A (en) * 1978-06-27 1980-06-24 The United States Of America As Represented By The Secretary Of The Interior Portable calibrator for d.c. circuit breakers
EP0204873A1 (en) * 1985-06-10 1986-12-17 Control Logic (Proprietary) Limited Circuit breaker monitor
US5804954A (en) * 1995-06-26 1998-09-08 Siemens Energy & Automation, Inc. Analog based tap position detector
US5736861A (en) * 1995-08-07 1998-04-07 Paul A. Keleher Circuit breaker tester
US5710513A (en) * 1995-12-07 1998-01-20 March; James M. Circuit breaker testing apparatus having adjustable inductor for controlling magnitude of current flow
DE29720284U1 (de) * 1997-11-11 1999-03-18 Siemens AG, 80333 München Anordnung zum Prüfen der Schutzeinrichtungen eines elektrischen Schaltgerätes
US6486888B1 (en) * 1999-08-24 2002-11-26 Microsoft Corporation Alpha regions
US6429659B1 (en) * 2000-03-09 2002-08-06 General Electric Company Connection tester for an electronic trip unit
US7173428B2 (en) * 2001-11-13 2007-02-06 Hurwicz Maxim D Portable circuit interrupter shutoff testing device and method
US6744260B2 (en) * 2002-07-17 2004-06-01 Eaton Corporation Tester for a plurality of circuit breakers having a range of rated currents and multiple trip functions
US20080068132A1 (en) * 2006-05-16 2008-03-20 Georges Kayanakis Contactless radiofrequency device featuring several antennas and related antenna selection circuit
US8154373B2 (en) * 2006-07-14 2012-04-10 Schneider Electric USA, Inc. Circuit breaker-like apparatus with combination current transformer
CN102944858B (zh) * 2012-11-12 2014-12-03 无锡市计量测试中心 剩余电流动作保护器动作特性检测仪校验仪分断开关
US9198500B2 (en) 2012-12-21 2015-12-01 Murray W. Davis Portable self powered line mountable electric power line and environment parameter monitoring transmitting and receiving system
US9753088B2 (en) * 2014-11-03 2017-09-05 Eaton Corporation Portable diagnostic apparatus for testing circuit breakers
US9766282B2 (en) * 2014-11-14 2017-09-19 Eaton Corporation System and method for self-testing a ground fault circuit interrupter
US10288663B1 (en) 2017-11-01 2019-05-14 Saudi Arabian Oil Company Method and apparatus for injecting current over an electrical conductor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US687147A (en) * 1900-07-20 1901-11-19 Gen Electric Regulator.
US1819468A (en) * 1926-10-13 1931-08-18 Westinghouse Electric & Mfg Co System of voltage regulation
US1967849A (en) * 1931-12-21 1934-07-24 Gen Electric Protective apparatus
US2415712A (en) * 1944-05-25 1947-02-11 Gen Electric Variable voltage transformer system
US2719234A (en) * 1952-10-21 1955-09-27 Westinghouse Electric Corp Electronic contacting of x-ray generator
US2830255A (en) * 1955-09-08 1958-04-08 Blasio Conrad G De Alternating current regulator
US3179875A (en) * 1961-09-07 1965-04-20 Perkin Elmer Corp Precision ratio transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141421U (enrdf_load_stackoverflow) * 1974-05-08 1975-11-21
JPS6292544U (enrdf_load_stackoverflow) * 1985-12-02 1987-06-13
JPH01158157A (ja) * 1987-12-15 1989-06-21 Taisei Corp 網状鉄筋の継手構造

Also Published As

Publication number Publication date
US3742304A (en) 1973-06-26
US3678372A (en) 1972-07-18

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