GB470711A - Improvements in and relating to electric motor control systems - Google Patents
Improvements in and relating to electric motor control systemsInfo
- Publication number
- GB470711A GB470711A GB528836A GB528836A GB470711A GB 470711 A GB470711 A GB 470711A GB 528836 A GB528836 A GB 528836A GB 528836 A GB528836 A GB 528836A GB 470711 A GB470711 A GB 470711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contactor
- contacts
- coil
- energized
- relay
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/20—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by reversal of phase sequence of connections to the motor
Abstract
470,711. Control of A.C. and D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and BENNS, H. V. Feb. 21, 1936, No. 5288. [Class 38 (iii)] Dynamo-electric braking.-A motor is connected to its supply by operating a switch c1 to energize the coil a of a contactor A, the coil d1 of a magnetic induction time delay relay also being energized over contacts a2 of the contactor A to close contacts d3. When it is desired to stop the motor the switch cl is opened, the contactor A de-energized, and the coil b of the reverse contactor B energized over back contacts al of the contactor A and the contacts d3. When the contactor A opens contacts a3 are closed, and contacts a2 opened so that the coil dl of the time relay is de-energized and short-circuited. After a predetermined time this relay opens its contacts d3 and de-energizes the reverse contactor B, so that the motor is disconnected. Similar control in the reverse direction of rotation is effected by a switch c2 and a time relay el. The time relays are supplied through a bridge connected full wave rectifier F. The system is applicable to star-delta and auto-transformer starting arrangements. Specification 345,785 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB528836A GB470711A (en) | 1936-02-21 | 1936-02-21 | Improvements in and relating to electric motor control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB528836A GB470711A (en) | 1936-02-21 | 1936-02-21 | Improvements in and relating to electric motor control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB470711A true GB470711A (en) | 1937-08-20 |
Family
ID=9793289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB528836A Expired GB470711A (en) | 1936-02-21 | 1936-02-21 | Improvements in and relating to electric motor control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB470711A (en) |
-
1936
- 1936-02-21 GB GB528836A patent/GB470711A/en not_active Expired
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