GB340891A - Improvements relating to the magnet cores of electric measuring instruments of the induction type - Google Patents
Improvements relating to the magnet cores of electric measuring instruments of the induction typeInfo
- Publication number
- GB340891A GB340891A GB9801/30A GB980130A GB340891A GB 340891 A GB340891 A GB 340891A GB 9801/30 A GB9801/30 A GB 9801/30A GB 980130 A GB980130 A GB 980130A GB 340891 A GB340891 A GB 340891A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- poles
- core
- magnet
- pronged
- 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
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
- G01R11/02—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
340,891. Supply meters. LANDIS ET GYR SOC. ANON., 1, Hofstrasse, Zug, Switzerland. Mar. 27, 1930, No. 9801. Convention date, April 11, 1929. [Class 37.] In order to compensate an induction motor meter for temperature errors throughout a large range of power-factor, the poles of the driving- magnet core are provided with sheet metal extensions which increase the acting surfaces of the poles and are composed partly of iron and partly of thermally sensitive alloy. The driving magnet shown consists of a three-pronged voltage core 1 and a two-pronged current magnet 2. Pieces of sheet metal 4, 5 are fixed to the current poles by means of screws 6 screwed into plates 7 fitted into slots in the core. The parts 4 are of iron and the parts 5 are of nickel-copper or other alloy of which the permeability decreases with rise of temperature. The parts 4, 5 may be in the same plane and joined by welding or soldering, or one part may engage beneath the other and may be joined thereto by welding or riveting. The parts may alternatively be connected by non-magnetic straps employing riveting, or dovetail mortising of their opposing front edges.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH340891X | 1929-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB340891A true GB340891A (en) | 1931-01-08 |
Family
ID=4505575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9801/30A Expired GB340891A (en) | 1929-04-11 | 1930-03-27 | Improvements relating to the magnet cores of electric measuring instruments of the induction type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB340891A (en) |
-
1930
- 1930-03-27 GB GB9801/30A patent/GB340891A/en not_active Expired
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