FR2381384A1 - Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact - Google Patents

Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact

Info

Publication number
FR2381384A1
FR2381384A1 FR7704870A FR7704870A FR2381384A1 FR 2381384 A1 FR2381384 A1 FR 2381384A1 FR 7704870 A FR7704870 A FR 7704870A FR 7704870 A FR7704870 A FR 7704870A FR 2381384 A1 FR2381384 A1 FR 2381384A1
Authority
FR
France
Prior art keywords
contact
secondary winding
conductance
tester
transformer secondary
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
FR7704870A
Other languages
French (fr)
Other versions
FR2381384B1 (en
Inventor
Georges Astic
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.)
Thales Avionics SAS
Original Assignee
Crouzet SA
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 Crouzet SA filed Critical Crouzet SA
Priority to FR7704870A priority Critical patent/FR2381384A1/en
Priority to DE19782806294 priority patent/DE2806294A1/en
Priority to IT7820378A priority patent/IT1092772B/en
Publication of FR2381384A1 publication Critical patent/FR2381384A1/en
Application granted granted Critical
Publication of FR2381384B1 publication Critical patent/FR2381384B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication
    • 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
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • 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
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Electronic Switches (AREA)

Abstract

The contact controls d.c. or mains frequency supply current to a solenoid or an electromagnetic load. It has a transformer with a primary winding isolating the testing device from the load circuit containing the tested contact. The test is effective whether the load circuit carries current or not. The miniature transformer (T) primary winding (N1) is connected in series with a measurement resistor (RD), and is excited by a high frequency signal (e1). The secondary winding (N2) is permanently connected to the contact (K) which can temporarily short-circuit it. The ratio of the primary winding turns to its secondary winding turns is greater than/and is typically 2.
FR7704870A 1977-02-18 1977-02-18 Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact Granted FR2381384A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7704870A FR2381384A1 (en) 1977-02-18 1977-02-18 Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact
DE19782806294 DE2806294A1 (en) 1977-02-18 1978-02-15 DEVICE FOR CHECKING THE ELECTRICAL CONDITION OF AN ELECTROMECHANICAL SWITCHING CONTACT
IT7820378A IT1092772B (en) 1977-02-18 1978-02-17 OPERATIONAL CONTROL DEVICE OF AN ELECTROMAGNETIC CONTACTOR ELEMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704870A FR2381384A1 (en) 1977-02-18 1977-02-18 Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact

Publications (2)

Publication Number Publication Date
FR2381384A1 true FR2381384A1 (en) 1978-09-15
FR2381384B1 FR2381384B1 (en) 1981-04-10

Family

ID=9186988

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704870A Granted FR2381384A1 (en) 1977-02-18 1977-02-18 Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact

Country Status (3)

Country Link
DE (1) DE2806294A1 (en)
FR (1) FR2381384A1 (en)
IT (1) IT1092772B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566916A1 (en) * 1984-06-28 1986-01-03 Santerne Sa Method for detecting insulation faults in at least one wire in an installation making use of it
EP0435686A2 (en) * 1989-12-29 1991-07-03 Kaye Instruments, Inc. Contact sensor module
FR2666181A1 (en) * 1990-08-23 1992-02-28 Ip2Ao Device for identifying a point of opening of an electrical circuit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142254C2 (en) * 1991-12-20 1996-11-07 Insta Elektro Gmbh & Co Kg Binary input for floating switch contacts
DE4221916A1 (en) * 1992-07-03 1994-01-05 Sel Alcatel Ag Monitoring circuit for switch status in electrical power circuit - has switch coupled to additional AC source and circuit elements forming resonance circuit
DE102013106487A1 (en) * 2013-06-21 2014-12-24 Wago Verwaltungsgesellschaft Mbh Monitoring circuit for detecting a switching state of an electrical switching contact and method thereof
EP3671797B1 (en) 2018-12-18 2021-05-26 Schneider Electric Industries SAS Safety switch device
BE1029400B1 (en) 2021-05-12 2022-12-12 Phoenix Contact Gmbh & Co Contact monitoring device for a three-pole changeover contact
DE102021112433A1 (en) 2021-05-12 2022-11-17 Phoenix Contact Gmbh & Co. Kg Contact monitoring device for a three-pole changeover contact

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566916A1 (en) * 1984-06-28 1986-01-03 Santerne Sa Method for detecting insulation faults in at least one wire in an installation making use of it
EP0435686A2 (en) * 1989-12-29 1991-07-03 Kaye Instruments, Inc. Contact sensor module
EP0435686A3 (en) * 1989-12-29 1992-07-01 Kaye Instruments, Inc. Contact sensor module
FR2666181A1 (en) * 1990-08-23 1992-02-28 Ip2Ao Device for identifying a point of opening of an electrical circuit

Also Published As

Publication number Publication date
IT1092772B (en) 1985-07-12
IT7820378A0 (en) 1978-02-17
FR2381384B1 (en) 1981-04-10
DE2806294A1 (en) 1978-08-24

Similar Documents

Publication Publication Date Title
DE3477703D1 (en) Coin discriminating apparatus
FR2381384A1 (en) Tester for conductance of electromechanical contact - has transformer secondary winding which can be short circuited by contact
SE7707826L (en) POWER SATURING DEVICE FOR ELECTRONIC RELAY
EP0383140A3 (en) Process and appliance for testing windings for short circuits
JPS5717870A (en) Coil turn short circuit detection method of electromagnetic induction device
US3526830A (en) Coil winding tester including chopped wave oscillatory circuit
SU1705774A1 (en) Device for detecting damage in interturn insulation in electric coils
GB866570A (en) Improvements in or relating to apparatus for material testing by magnetic means
JPS5559348A (en) Winding short detecting method for transformer
ES462711A1 (en) Winding inspector
SU1751699A1 (en) Apparatus for finding short-circuited turns in inductive members
SU121873A1 (en) Automatic device for determining the number of turns of the coils
JPS5633521A (en) Device for measuring stress
SU410333A1 (en) EQUIVALENT OF RESISTANCE CONTACTS.
FR2314502A1 (en) Electrical leakage measurement apparatus - applies high voltage across component and measures current using opto-electronic threshold detection circuit
JPS57124264A (en) Burn-in testing equipment
SU734587A1 (en) Device for measuring pulse magnetic permeability value of cores made of magnetically-soft materials
GB914378A (en) Devices for detecting faults in electrical coils
JPS55146061A (en) Temperature testing method for transformer
SU995015A1 (en) Device for measuring constant time in direct current circuits
FR2344209A7 (en) Test instrument for telephone switching relays - has micro-relay actuated by magnetic field of relay coil under test
SU467270A1 (en) Device for controlling the time of switching of electrical contact devices
GB1535814A (en) Synthetic testing apparatus for circuit breakers
SU905892A1 (en) Magnetic core testing device
SU855542A1 (en) Device for determination of errors of current transformers operating in transitional modes

Legal Events

Date Code Title Description
CL Concession to grant licences
ST Notification of lapse