GB189722217A - Improvements in Shielding Devices for Electric Meters. - Google Patents
Improvements in Shielding Devices for Electric Meters.Info
- Publication number
- GB189722217A GB189722217A GB189722217DA GB189722217A GB 189722217 A GB189722217 A GB 189722217A GB 189722217D A GB189722217D A GB 189722217DA GB 189722217 A GB189722217 A GB 189722217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- magnets
- enclosed
- main
- meters
- 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
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
22,217. British Thomson-Houston Co., [Thomson, E.]. Sept. 28. Motor meters, having permanent magnetic brakes, are provided with means to prevent alteration of the strength of the magnets by the accidental passage of excessive currents through the main coils of the meters. Either the magnets or the coils, or both, are enclosed or partly enclosed by non-magnetic closed conducting-circuits, in which opposite currents are induced by any sudden variation in the main current, and the strong magnetic field of the latter thus limited. Fig. 1 represents one arrangement applied to an energy meter, in which the main-current field coils C are surrounded by parallel copper conductors S, made either solid or of wire. Such shields may be otherwise arranged near or between the layers of the coils, or round the brake magnets and disc D. Fig. 5 shows a brake magnet enclosed in a copper casting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB189722217T | 1897-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB189722217A true GB189722217A (en) | 1897-10-30 |
Family
ID=32413749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB189722217D Expired GB189722217A (en) | 1897-09-28 | 1897-09-28 | Improvements in Shielding Devices for Electric Meters. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB189722217A (en) |
-
1897
- 1897-09-28 GB GB189722217D patent/GB189722217A/en not_active Expired
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