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FR2386043A1 - Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch - Google Patents

Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch

Info

Publication number
FR2386043A1
FR2386043A1 FR7709290A FR7709290A FR2386043A1 FR 2386043 A1 FR2386043 A1 FR 2386043A1 FR 7709290 A FR7709290 A FR 7709290A FR 7709290 A FR7709290 A FR 7709290A FR 2386043 A1 FR2386043 A1 FR 2386043A1
Authority
FR
France
Prior art keywords
switch
electrical network
network
impedance measurement
resistance
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
FR7709290A
Other languages
French (fr)
Other versions
FR2386043B1 (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 FR7709290A priority Critical patent/FR2386043A1/en
Publication of FR2386043A1 publication Critical patent/FR2386043A1/en
Application granted granted Critical
Publication of FR2386043B1 publication Critical patent/FR2386043B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

The method of measurement uses the fall in voltage method initiated by the connection of a known load Z into the network. The method includes a preliminary adaptation operation which consists of modifying the nature of the known load Z until the fall in voltage is a maximum. Modification of the load Z is achieved by modifying its argument phi whilst retaining its modulus ant. The variable known load Z (1) consists of a resistance network (2) which can be switched by a first stage (3) of a switch (4) in series with an inductance network (5). The inductance network (5) can be switched by a second stage (6) of the switch (4). Each resistance, inductance network switched simultaneously in series by the switch (4) has an impedance whose modulus nstant and whose argument phi is variable and depends upon the position of the switch.
FR7709290A 1977-03-29 1977-03-29 Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch Granted FR2386043A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7709290A FR2386043A1 (en) 1977-03-29 1977-03-29 Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7709290A FR2386043A1 (en) 1977-03-29 1977-03-29 Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch

Publications (2)

Publication Number Publication Date
FR2386043A1 true FR2386043A1 (en) 1978-10-27
FR2386043B1 FR2386043B1 (en) 1981-08-28

Family

ID=9188688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7709290A Granted FR2386043A1 (en) 1977-03-29 1977-03-29 Electrical network loop impedance measurement - involves resistance and inductance circuits interconnected by switch

Country Status (1)

Country Link
FR (1) FR2386043A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2702842A1 (en) * 1993-03-18 1994-09-23 Merlin Gerin Permanent control system for the electrical conduction of an alternative network.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2702842A1 (en) * 1993-03-18 1994-09-23 Merlin Gerin Permanent control system for the electrical conduction of an alternative network.
EP0617292A1 (en) * 1993-03-18 1994-09-28 Schneider Electric Sa Continuously AC-mains resistance monitoring system
US5420511A (en) * 1993-03-18 1995-05-30 Merlin Gerin System for continuous monitoring of the electrical conduction of an AC power system

Also Published As

Publication number Publication date
FR2386043B1 (en) 1981-08-28

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Legal Events

Date Code Title Description
ST Notification of lapse