GB529133A - Improvements in or relating to electric watthour meters - Google Patents
Improvements in or relating to electric watthour metersInfo
- Publication number
- GB529133A GB529133A GB15238/39A GB1523839A GB529133A GB 529133 A GB529133 A GB 529133A GB 15238/39 A GB15238/39 A GB 15238/39A GB 1523839 A GB1523839 A GB 1523839A GB 529133 A GB529133 A GB 529133A
- Authority
- GB
- United Kingdom
- Prior art keywords
- poles
- disc
- magnet
- eddy currents
- return piece
- 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
- G01R11/10—Braking magnets; Damping arrangements
Abstract
529,133. Supply meters. SANGAMO WESTON, Ltd. May 22, 1939, No. 15238. Convention date, Dec. 15, 1938. [Class 37] [Also in Group XXXIV] A meter of the induction type has an E- shaped permanent brake magnet having three poles of alternate polarity so spaced that there is substantial interaction betweenthe eddy currents generated in the disc under any one pole and the flux of the adjacent pole or poles. As shown in Fig. 5 the brake magnet is an E-shaped permanent magnet 31 having poles 32, 33, 34 above the disc 17, a magnetic return piece 35 being provided below the disc. The poles 32, 33, 34 may be in one plane or they may be arranged in a circular arc as shown at 32<1>, 331, 34<1>, Fig. 6. Eddy currents 37, 38 interact with the poles 32<1>, 33<1>, 34<1> to produce a retarding torque. The sides 40 of the poles may be radial with respect to the centre of the disc 17. The return piece 35 may be replaced by a second permanent magnet similar to the magnet 31 and having poles of opposite polarity facing the disc 17. A screw 41 is provided for adjusting the radial position of the magnet 31. The air gap A may also be varied.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529133XA | 1938-12-15 | 1938-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB529133A true GB529133A (en) | 1940-11-14 |
Family
ID=21980729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15238/39A Expired GB529133A (en) | 1938-12-15 | 1939-05-22 | Improvements in or relating to electric watthour meters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB529133A (en) |
-
1939
- 1939-05-22 GB GB15238/39A patent/GB529133A/en not_active Expired
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