GB422169A - An improved apparatus for the measurement of the power factor in electric circuits - Google Patents

An improved apparatus for the measurement of the power factor in electric circuits

Info

Publication number
GB422169A
GB422169A GB20683/34A GB2068334A GB422169A GB 422169 A GB422169 A GB 422169A GB 20683/34 A GB20683/34 A GB 20683/34A GB 2068334 A GB2068334 A GB 2068334A GB 422169 A GB422169 A GB 422169A
Authority
GB
United Kingdom
Prior art keywords
current
instrument
resistance
circuit
resistor
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
GB20683/34A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB422169A publication Critical patent/GB422169A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/48—Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/006—Measuring power factor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

422,169. Power-factor measurements. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. July 14, 1934, No. 20683. Convention date, Aug. 31, 1933. [Class 37] Apparatus for power-factor measurements comprises a Ferraris instrument energized by currents proportional to the voltage and current of the circuit these currents being maintained constant by known means. The instrument may be a motor meter effecting impulse transmission or a wattmeter giving direct indication. The secondary 3 of a current transformer shunted by a resistance 11 is in series circuit with a resistor 4 driven by a synchronous motor 17, current coils 6 of an I<2>-hour meter 7 and current coils 8 of the Ferraris instrument. The ohmic resistance of the current circuit is large compared with the inductance resistance in order to maintain the current phase relationship. An iron-hydrogen resistor 15 is employed to keep the pressure constant.
GB20683/34A 1933-08-31 1934-07-14 An improved apparatus for the measurement of the power factor in electric circuits Expired GB422169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH422169X 1933-08-31

Publications (1)

Publication Number Publication Date
GB422169A true GB422169A (en) 1935-01-07

Family

ID=4514729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20683/34A Expired GB422169A (en) 1933-08-31 1934-07-14 An improved apparatus for the measurement of the power factor in electric circuits

Country Status (1)

Country Link
GB (1) GB422169A (en)

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