GB401601A - Improvements in or relating to phase sequence component segregation apparatus - Google Patents
Improvements in or relating to phase sequence component segregation apparatusInfo
- Publication number
- GB401601A GB401601A GB14406/33A GB1440633A GB401601A GB 401601 A GB401601 A GB 401601A GB 14406/33 A GB14406/33 A GB 14406/33A GB 1440633 A GB1440633 A GB 1440633A GB 401601 A GB401601 A GB 401601A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- taps
- per cent
- conductors
- resistance
- 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
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
401,601. Protective cut-out arrangements. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Lenehan, B. E.; 18, Liberty Street, Bloomfield, New Jersey, U.S.A.) May 18, 1933, No. 14406. Convention date, May 25, 1932. [Class 38 (v).] Apparatus for extracting symmetrical phase-sequence voltage components from a three-phase system 1, 2, 3, comprises a lagging powerfactor impedance 14 and resistance 15, a reactance 16 and resistance 17, and an autotransformer 18 tapped in the percentages 40, 20, 40. The taps are connected through voltmeters 19, 20 with, respectively, the junction of 14, 15 and an adjustable tap in 17. The voltage across 15 is arranged to be 40 per cent of, and to lag by 60‹, the voltage between conductors 3, 1, and the tap in 17 is chosen so that the voltage between it and conductor 2 is 40 per cent of the voltage between conductors 2, 1 and lags it by 60‹. Meters 19, 20 then read, respectively, the negative and positive components. The Specification illustrates the invention by means of a vector diagram, Fig. 2 (not shown), and refers to protective and general control purposes. The taps may be any percentage below 50 per cent, but each meter must be connected to taps of equal value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US401601XA | 1932-05-25 | 1932-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB401601A true GB401601A (en) | 1933-11-16 |
Family
ID=21909450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14406/33A Expired GB401601A (en) | 1932-05-25 | 1933-05-18 | Improvements in or relating to phase sequence component segregation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB401601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713799B (en) * | 2009-09-21 | 2012-08-22 | 杭州之江开关股份有限公司 | Method for distinguishing three-phase alternating current phase sequences |
-
1933
- 1933-05-18 GB GB14406/33A patent/GB401601A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713799B (en) * | 2009-09-21 | 2012-08-22 | 杭州之江开关股份有限公司 | Method for distinguishing three-phase alternating current phase sequences |
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