GB177060A - Improvements in and relating to starting devices for electric motors - Google Patents
Improvements in and relating to starting devices for electric motorsInfo
- Publication number
- GB177060A GB177060A GB898121A GB898121A GB177060A GB 177060 A GB177060 A GB 177060A GB 898121 A GB898121 A GB 898121A GB 898121 A GB898121 A GB 898121A GB 177060 A GB177060 A GB 177060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- overload
- starter
- connections
- contacts
- coils
- 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
- 239000007858 starting material Substances 0.000 abstract 4
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 238000010079 rubber tapping Methods 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
- H02P1/022—Security devices, e.g. correct phase sequencing
- H02P1/024—Protection against simultaneous starting by two starting devices
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor And Converter Starters (AREA)
Abstract
177,060. British Thomson - Houston Co., Ltd., and Sugden, J. March 23, 1921. Controllers with overload release; safety arrangements. - Relates to motor starters provided with means for automatically altering the setting of an overload device when the starter is moved from one running position to another, and consists in arranging a starter of this kind with a separate main switch adapted to be tripped open when the overload device responds. In one modification, a threephase motor - starter having two positions, in the first of which connections are made through contacts A, B<1> and A<1>, B<2>, and in the second of which connections are made through contacts A, B only, is arranged so that in the first position, overload coils S are energized from tappings H on starting auto-transformers E, while in the second position, the overload coils are energized directly from the mains. The overload response de-energizes a no-volt coil F controlling a separate circuit-breaker G. In other modifications, the overload rating is varied by varying the air gap or spring tension of an electromagnet armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB898121A GB177060A (en) | 1921-03-23 | 1921-03-23 | Improvements in and relating to starting devices for electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB898121A GB177060A (en) | 1921-03-23 | 1921-03-23 | Improvements in and relating to starting devices for electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB177060A true GB177060A (en) | 1922-03-23 |
Family
ID=9863039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB898121A Expired GB177060A (en) | 1921-03-23 | 1921-03-23 | Improvements in and relating to starting devices for electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB177060A (en) |
-
1921
- 1921-03-23 GB GB898121A patent/GB177060A/en not_active Expired
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