FR2377089A1 - AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device - Google Patents

AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device

Info

Publication number
FR2377089A1
FR2377089A1 FR7700205A FR7700205A FR2377089A1 FR 2377089 A1 FR2377089 A1 FR 2377089A1 FR 7700205 A FR7700205 A FR 7700205A FR 7700205 A FR7700205 A FR 7700205A FR 2377089 A1 FR2377089 A1 FR 2377089A1
Authority
FR
France
Prior art keywords
voltage source
circuit breaker
auxiliary voltage
control device
test 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
FR7700205A
Other languages
French (fr)
Other versions
FR2377089B1 (en
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.)
Chauvin Arnoux SAS
Original Assignee
Chauvin Arnoux SAS
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 Chauvin Arnoux SAS filed Critical Chauvin Arnoux SAS
Priority to FR7700205A priority Critical patent/FR2377089A1/en
Priority to DE19782800566 priority patent/DE2800566A1/en
Publication of FR2377089A1 publication Critical patent/FR2377089A1/en
Application granted granted Critical
Publication of FR2377089B1 publication Critical patent/FR2377089B1/fr
Granted 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
    • 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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

A test circuit is provided to determine the release current for an a.c. supply system circuit breaker which is intended to release at a current between two specified values. The circuit includes a programming device (20) incorporating a capacitor (21) to store a voltage from an auxiliary voltage source (24). The capacitor is connected in series with a resistor (22) and the common point is coupled to the control electrode of an FET (19). The on resistance of the FET makes a potential divider with a resistor (18) and is connected to the second input of an amplifier (13) having a high amplification factor. The voltage divider (18, 19) is connected across a bridge rectifier (6) connected to the A.C. system. Feedback devices are provided to generate a current if the breaker voltage rises above its upper limit without the cut-out operating.
FR7700205A 1977-01-06 1977-01-06 AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device Granted FR2377089A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7700205A FR2377089A1 (en) 1977-01-06 1977-01-06 AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device
DE19782800566 DE2800566A1 (en) 1977-01-06 1978-01-07 DEVICE FOR GENERATING A CONTINUOUSLY INCREASING AC CURRENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7700205A FR2377089A1 (en) 1977-01-06 1977-01-06 AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device

Publications (2)

Publication Number Publication Date
FR2377089A1 true FR2377089A1 (en) 1978-08-04
FR2377089B1 FR2377089B1 (en) 1981-02-13

Family

ID=9185163

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700205A Granted FR2377089A1 (en) 1977-01-06 1977-01-06 AC circuit breaker test unit - has auxiliary voltage source coupled to FET control device

Country Status (2)

Country Link
DE (1) DE2800566A1 (en)
FR (1) FR2377089A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379905A1 (en) * 1977-02-02 1978-09-01 Lebocey Industrie Differential protection system guarding against equipment faults - removes need for insertion of test resistance loads using variable LV generator
FR2540286A1 (en) * 1983-02-01 1984-08-03 Chauvin Arnoux Sa DEVICE FOR GENERATING AN ALTERNATIVE CURRENT RAMP FOR CHECKING THE CURRENT OF A CIRCUIT BREAKER

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943725C2 (en) * 1979-10-30 1984-07-19 Brown, Boveri & Cie Ag, 6800 Mannheim Procedure for testing a residual current device with a summation current transformer and facilities for carrying out the procedure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379905A1 (en) * 1977-02-02 1978-09-01 Lebocey Industrie Differential protection system guarding against equipment faults - removes need for insertion of test resistance loads using variable LV generator
FR2540286A1 (en) * 1983-02-01 1984-08-03 Chauvin Arnoux Sa DEVICE FOR GENERATING AN ALTERNATIVE CURRENT RAMP FOR CHECKING THE CURRENT OF A CIRCUIT BREAKER
US4611174A (en) * 1983-02-01 1986-09-09 Societe en Commandite par actions dite: Chauvin Arnoux Device for generating an AC ramp for checking the tripping current of a circuit-breaker

Also Published As

Publication number Publication date
FR2377089B1 (en) 1981-02-13
DE2800566A1 (en) 1978-07-20

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Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name
ST Notification of lapse