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
GB19333/38A
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 AGfiledCriticalLandis and Gyr AG
Publication of GB518569ApublicationCriticalpatent/GB518569A/en
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
G01R11/02—Constructional details
G01R11/17—Compensating for errors; Adjusting or regulating means therefor
G01R11/18—Compensating for variations in ambient conditions
G01R11/185—Temperature compensation
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Iron Core Of Rotating Electric Machines
(AREA)
Abstract
518,569. Electric supply meters. LANDIS & GYR AKT.-GES. June 29, 1938, No. 19333. Convention date, July 20, 1937, [Class 37] In Ferraris meters temperature compensation is effected by means of a bi-metal strip, which, with variations in temperature, alters a strayflux air-gap close to a short circuited ring through which the voltage flux passes. A magnetic return member 5 screwed at 1 to the voltage core 4 is bent at right angles near its lower end to form the counterpole extending between the poles of the current core 9. The short circuited ring 10 is located on the member 5 adjacent the bend thereof and rests on the edges of an aperture in a magnetic angle piece 12 screwed at 11 to member 5. A magnetic bimetal strip 14 is screwed at 15 to the return member 5 and, at its lower end, separated therefrom by the air gap 18 which increases as the temperature rises and thereby reduces the reactance of the ring 10.
GB19333/38A1937-07-201938-06-29Improvements relating to the temperature compensation of ferraris meters
ExpiredGB518569A
(en)
Device for varying the temperature coeffcient in induction meters by means of a bimetal strip acting as a self-adjusting reluctance in the magnetic shunt
Improvements in or relating to electromagnetic responsive devices for use in watthour meters or other electromagnetic measuring instruments of the induction type