GB170984A - Improvements in and relating to electric motor control - Google Patents
Improvements in and relating to electric motor controlInfo
- Publication number
- GB170984A GB170984A GB24262/20A GB2426220A GB170984A GB 170984 A GB170984 A GB 170984A GB 24262/20 A GB24262/20 A GB 24262/20A GB 2426220 A GB2426220 A GB 2426220A GB 170984 A GB170984 A GB 170984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- braking
- contactors
- breaker
- case
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
170,984. British Thomson - Houston Co., Ltd., (General Electric Co.). Aug. 20, 1920. Systems for continuous-current motors only: electric braking.-In controlling a shunt-wound motor A, driving a planing-machine or the like,. by means of a pair of reversing contactors F, R, provision is made for exerting a powerful dynamic braking effect upon the motor in case one of the contactors fails to open when required. The effect is obtained by moving the master switch S so as to close the open contactor, thus making a momentary short-circuit across the mains, and providing a circuit-breaker C, B which immediately responds and cuts off the supply. The circuit-breaker may, as shown, be provide'd with auxiliary contacts 11, 12 which co-operate with a braking contactor B to establish another braking circuit including a, resistance R in case the reversing contactors behave normally.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB24262/20A GB170984A (en) | 1920-08-20 | 1920-08-20 | Improvements in and relating to electric motor control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB24262/20A GB170984A (en) | 1920-08-20 | 1920-08-20 | Improvements in and relating to electric motor control |
Publications (1)
Publication Number | Publication Date |
---|---|
GB170984A true GB170984A (en) | 1921-11-10 |
Family
ID=10208948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24262/20A Expired GB170984A (en) | 1920-08-20 | 1920-08-20 | Improvements in and relating to electric motor control |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB170984A (en) |
-
1920
- 1920-08-20 GB GB24262/20A patent/GB170984A/en not_active Expired
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