GB471758A - Improvements in and relating to electric control systems for direct-current drives - Google Patents
Improvements in and relating to electric control systems for direct-current drivesInfo
- Publication number
- GB471758A GB471758A GB7111/36A GB711136A GB471758A GB 471758 A GB471758 A GB 471758A GB 7111/36 A GB7111/36 A GB 7111/36A GB 711136 A GB711136 A GB 711136A GB 471758 A GB471758 A GB 471758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- variable resistance
- resistance
- closed
- zero
- 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
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification 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
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
- H02P1/08—Manually-operated on/off switch controlling power-operated multi-position switch or impedances for starting a motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
471,758. Controllers. BRITISH THOMSON-HOUSTON CO., Ltd. March 9, 1936, No. 7111. Convention date, March 8, 1935. [Class 38 (iii)] Combination of resistances.-In a modification of the control equipment described in Specification 466,893, the odd and even tappings 2, 3, 4 on. the main resistance are connected respectively by individual switches c, d, e, to the one or other active end of the variable resistance B in succession, and the tapping 1 is provided with switches a, b for connecting it to the respective ends of the variable resistance. With switches a, c, closed the variable resistance is connected in parallel with the first section 1, 2 of the main resistance and by operation of the commutator type controller B the variable resistance is reduced to zero. The switches band d are then closed and the switch a opened, the movable brush of the commutator type controller being moved to its initial position. Thus the variable resistance is connected in parallel with the second section 2, 3 of the main resistance. The variable resistance is then reduced to zero and the switches b, c opened and the switches a, e closed, the commutator type controller being again restored to its final position. Thus the variable resistance is connected in parallel with the final section 3, 4, of the main resistance and the variable resistance again reduced to zero. Finally the switches b and e alone are closed and the direct motor connections maintained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE471758X | 1935-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB471758A true GB471758A (en) | 1937-09-09 |
Family
ID=6541315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7111/36A Expired GB471758A (en) | 1935-03-08 | 1936-03-09 | Improvements in and relating to electric control systems for direct-current drives |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB471758A (en) |
-
1936
- 1936-03-09 GB GB7111/36A patent/GB471758A/en not_active Expired
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