GB717586A - Improvements in and relating to pull-in indicators for synchronous motors - Google Patents
Improvements in and relating to pull-in indicators for synchronous motorsInfo
- Publication number
- GB717586A GB717586A GB2179451A GB2179451A GB717586A GB 717586 A GB717586 A GB 717586A GB 2179451 A GB2179451 A GB 2179451A GB 2179451 A GB2179451 A GB 2179451A GB 717586 A GB717586 A GB 717586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- pull
- lamp
- indicators
- rectifier
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
717,586. Synchronism indicators. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 13, 1952, [Sept. 17, 1951.] No. 21794/51. Class 37. Apparatus for indicating the "pull-in" or "pull-out" position of a synchronous motor comprises a neon lamp or other indicating device 3 connected in a circuit supplied with a voltage from the same source as the motor, the circuit containing a rectifier 4 in series with the indicating device and a rotating switch with an insulating section 6 driven by the motor so that if, during the half cycle when the rectifier 4 conducts, the rotor has pulled in in the desired position the lamp 3 &c. remains unoperated. The arrangement shown is for a motor with a two pole unwound rotor. For a four-pole motor two sections 6 of insulating material are employed, one on each side of the shaft and each extending for 90 degrees. If the insulating section subtends only a small angle the lamp flickers before synchronism is actually lost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2179451A GB717586A (en) | 1951-09-17 | 1951-09-17 | Improvements in and relating to pull-in indicators for synchronous motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2179451A GB717586A (en) | 1951-09-17 | 1951-09-17 | Improvements in and relating to pull-in indicators for synchronous motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717586A true GB717586A (en) | 1954-10-27 |
Family
ID=10168908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2179451A Expired GB717586A (en) | 1951-09-17 | 1951-09-17 | Improvements in and relating to pull-in indicators for synchronous motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB717586A (en) |
-
1951
- 1951-09-17 GB GB2179451A patent/GB717586A/en not_active Expired
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