GB932704A - Apparatus for measuring the quotient of two electrical quantities - Google Patents

Apparatus for measuring the quotient of two electrical quantities

Info

Publication number
GB932704A
GB932704A GB3785761A GB3785761A GB932704A GB 932704 A GB932704 A GB 932704A GB 3785761 A GB3785761 A GB 3785761A GB 3785761 A GB3785761 A GB 3785761A GB 932704 A GB932704 A GB 932704A
Authority
GB
United Kingdom
Prior art keywords
proportional
quotient
voltage
inductance
current
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.)
Expired
Application number
GB3785761A
Other languages
English (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.)
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
Original Assignee
BBC BROWN BOVERI and CIE
Brown Boveri und Cie AG Switzerland
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 BBC BROWN BOVERI and CIE, Brown Boveri und Cie AG Switzerland filed Critical BBC BROWN BOVERI and CIE
Publication of GB932704A publication Critical patent/GB932704A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H3/40—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 responsive to ratio of voltage and current
    • 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
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • G01R27/10—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient
    • G01R27/12—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient using hand generators, e.g. meggers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB3785761A 1960-10-25 1961-10-23 Apparatus for measuring the quotient of two electrical quantities Expired GB932704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1190260A CH383494A (de) 1960-10-25 1960-10-25 Elektrischer Quotientenmesser, insbesondere für Schutzeinrichtungen

Publications (1)

Publication Number Publication Date
GB932704A true GB932704A (en) 1963-07-31

Family

ID=4378000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3785761A Expired GB932704A (en) 1960-10-25 1961-10-23 Apparatus for measuring the quotient of two electrical quantities

Country Status (4)

Country Link
BE (1) BE609464A (enrdf_load_stackoverflow)
CH (1) CH383494A (enrdf_load_stackoverflow)
GB (1) GB932704A (enrdf_load_stackoverflow)
NL (1) NL268786A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654424A (en) * 1970-03-23 1972-04-04 Robotron Corp Quotient circuit
NO20161993A1 (en) * 2016-12-15 2018-04-09 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654424A (en) * 1970-03-23 1972-04-04 Robotron Corp Quotient circuit
NO20161993A1 (en) * 2016-12-15 2018-04-09 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof
NO342173B1 (en) * 2016-12-15 2018-04-09 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof
WO2018111115A1 (en) * 2016-12-15 2018-06-21 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof
US11280849B2 (en) 2016-12-15 2022-03-22 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof

Also Published As

Publication number Publication date
CH383494A (de) 1964-10-31
BE609464A (fr) 1962-02-15
NL268786A (enrdf_load_stackoverflow)

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