GB388502A - Improvements in and relating to methods of and apparatus for starting alternating-current motors - Google Patents
Improvements in and relating to methods of and apparatus for starting alternating-current motorsInfo
- Publication number
- GB388502A GB388502A GB32427/31A GB3242731A GB388502A GB 388502 A GB388502 A GB 388502A GB 32427/31 A GB32427/31 A GB 32427/31A GB 3242731 A GB3242731 A GB 3242731A GB 388502 A GB388502 A GB 388502A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- motor
- relay
- closed
- normal
- 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
- 238000004804 winding Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
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
- H02P1/02—Details of starting control
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
- H02P1/12—Switching devices centrifugally operated by the motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
388,502. Master control of A. C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of McLenegan, D. W. ; 1686, Rugby Road, Schenectady, New York, U.S.A.) Nov. 23, 1931, No. 32427. Convention date, Nov. 21, 1930. [Class 38 (iii).] To start a motor, voltages below normal, above normal, below normal, and normal, are applied to the armature winding in succession. Upon closure of a switch 10 a switch 4 is closed which connects the motor 1 to the supply with part of the windings of an autotransformer 2 acting as a series choke. After a time interval a relay 13 closes to close a switch 3, so that the motor is supplied with a voltage above normal. After a further time a relay 16 opens its contacts 17 and closes its contacts 18, so that the relay 13 and switch 3 open, and the initial motor connections are re-established. Upon opening of the switch 3 a switch 7 is closed to connect the motor directly to the supply. A field switch 9 is closed when a centrifugally operated switch 21 closes, provided that the switch 7 has been closed. The switch 9 may close independently of the switch 7, and may have auxiliary contacts in the circuit of the coil of the relay 16, so that it must close before the abnormal voltage is applied.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US388502XA | 1930-11-21 | 1930-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388502A true GB388502A (en) | 1933-03-02 |
Family
ID=21902262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32427/31A Expired GB388502A (en) | 1930-11-21 | 1931-11-23 | Improvements in and relating to methods of and apparatus for starting alternating-current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB388502A (en) |
-
1931
- 1931-11-23 GB GB32427/31A patent/GB388502A/en not_active Expired
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