GB632334A - Improvements in or relating to alternating current measuring instruments - Google Patents
Improvements in or relating to alternating current measuring instrumentsInfo
- Publication number
- GB632334A GB632334A GB16901/47A GB1690147A GB632334A GB 632334 A GB632334 A GB 632334A GB 16901/47 A GB16901/47 A GB 16901/47A GB 1690147 A GB1690147 A GB 1690147A GB 632334 A GB632334 A GB 632334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- block
- loop
- calibration
- flux flowing
- 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)
- Transformers For Measuring Instruments (AREA)
Abstract
632,334. Power meters ; energy meters. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 26, 1947, No. 16901. Convention date, Sept. 17, 1941. [Class 37] In an induction type power or energy meter the inductance of the quadrature loop or other phase correcting device is adjustable to effect the required calibration or correction. The invention is described in relation to a watthour meter, Fig. 1 (not shown), whose quadrature loop 13 is embraced on one of its sides, as shown in Fig. 2, by a U-shaped block 14, Fig. 3, of magnetic material and calibration is effected by moving in or out as required a screw 16 in the slot 15. The screw 16 or block 14 or both, may be of material which possesses a negative temperature coefficient of permeability. In a modification, Fig. 4, the loop 13A is enlarged to include side apertures into which extend projections 9A, 10A integral with the core 1. The lag plate 13A in this case acts to lag the current flux flowing through 9A, 10A as well as the voltage flux flowing in the tip of the voltage pole 2. In Fig. 4 the phase correction is obtained by movement of a rod 24 rigidly secured to or in threaded engagement with a screw 22 within the bore 17A of the block 14A which may, as shown, abut the voltage pole 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US632334XA | 1941-09-17 | 1941-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB632334A true GB632334A (en) | 1949-11-21 |
Family
ID=22047858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16901/47A Expired GB632334A (en) | 1941-09-17 | 1947-06-26 | Improvements in or relating to alternating current measuring instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB632334A (en) |
-
1947
- 1947-06-26 GB GB16901/47A patent/GB632334A/en not_active Expired
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