GB187784A - Improvements in and relating to electric motor starters - Google Patents
Improvements in and relating to electric motor startersInfo
- Publication number
- GB187784A GB187784A GB2302121A GB2302121A GB187784A GB 187784 A GB187784 A GB 187784A GB 2302121 A GB2302121 A GB 2302121A GB 2302121 A GB2302121 A GB 2302121A GB 187784 A GB187784 A GB 187784A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- relay
- closure
- relating
- electric motor
- 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
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/34—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive reduction of impedance in secondary circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
187,784. British Thomson - Houston Co., Ltd., (General Electric Co.). Aug. 30, 1921. Automatic starters.-A current limit relay 20, 21, the closure of which determines the cutting out of starting resistance 11, has a mechanical constraint such as a lever 19 removed by the action of an electromagnet 18 after an electromagnetic line switch 13 has been closed and a master controller moved to its accelerating position. The relay closes under gravity when the motor current flowing through a coil 17 has fallen to a safe value. A low resistance coil 20 shunting the coil 18 is switched in to make a firm contact, and the relay reopens after the closure of the controlled resistance contactor 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2302121A GB187784A (en) | 1921-08-30 | 1921-08-30 | Improvements in and relating to electric motor starters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2302121A GB187784A (en) | 1921-08-30 | 1921-08-30 | Improvements in and relating to electric motor starters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB187784A true GB187784A (en) | 1922-11-02 |
Family
ID=10188809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2302121A Expired GB187784A (en) | 1921-08-30 | 1921-08-30 | Improvements in and relating to electric motor starters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB187784A (en) |
-
1921
- 1921-08-30 GB GB2302121A patent/GB187784A/en not_active Expired
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