GB301398A - Improvements in or relating to electric meters and wattmeters - Google Patents

Improvements in or relating to electric meters and wattmeters

Info

Publication number
GB301398A
GB301398A GB3509428A GB3509428A GB301398A GB 301398 A GB301398 A GB 301398A GB 3509428 A GB3509428 A GB 3509428A GB 3509428 A GB3509428 A GB 3509428A GB 301398 A GB301398 A GB 301398A
Authority
GB
United Kingdom
Prior art keywords
power
energy
transformers
star
connections
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
GB3509428A
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger 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
Priority to FR301398X priority Critical
Application filed by Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB301398A publication Critical patent/GB301398A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power, i.e. electric energy or current, e.g. of consumption
    • G01R11/48Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy
    • G01R11/52Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy for measuring reactive component

Abstract

301,398. Compagnie pour la Fabrication des Compteurs et Materiel d'Usines Ó Gaz, and Iliovici. A.D. Nov. 28, 1927, [Convention date]. Special quantities, registering; power meters: phase differences, measuring.-Power, energy, or phase meters, are combined with two T-connected or three star-connected auto-transformers provided with tappings for measuring active, reactive, or " complex " power or energy, the connection to the line being either two star or delta voltages, or one star and one delta. The invention is applicable to any polyphase system. In one arrangement, Fig. 6, auto-transformers A, B. C, a four-pole two-way switch D, and a phasesequence indicator E are located in a casing F outside the metering apparatus. The terminals 1, 3 are connected across the lines 1<1>, 3<1>, and the division of the transformer windings is such that by changing the switch connections either active or reactive power or energy can be measured. When " complex " power or energy is required, the transformer connections are re-arranged to give the desired applied voltages. Another arrangement is described for use on three-phase lines having a fourth conductor which is connected to the neutral point of three tapped starconnected transformers. The connections can be grouped so that they connect different line voltages, for example, one set may function on 110 volts and another on 220 volts.
GB3509428A 1927-11-28 1928-11-28 Improvements in or relating to electric meters and wattmeters Expired GB301398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR301398X 1927-11-28

Publications (1)

Publication Number Publication Date
GB301398A true GB301398A (en) 1930-02-13

Family

ID=8888522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3509428A Expired GB301398A (en) 1927-11-28 1928-11-28 Improvements in or relating to electric meters and wattmeters

Country Status (1)

Country Link
GB (1) GB301398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010081280A1 (en) * 2009-01-13 2010-07-22 中国计量科学研究院 Three-phase electric energy measurement apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010081280A1 (en) * 2009-01-13 2010-07-22 中国计量科学研究院 Three-phase electric energy measurement apparatus
US8823359B2 (en) 2009-01-13 2014-09-02 National Institute Of Metrology P.R. China Three-phase electric energy measurement apparatus

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