GB436136A - Improvements in or relating to starting systems for electric motors or other electric apparatus - Google Patents
Improvements in or relating to starting systems for electric motors or other electric apparatusInfo
- Publication number
- GB436136A GB436136A GB14504/35A GB1450435A GB436136A GB 436136 A GB436136 A GB 436136A GB 14504/35 A GB14504/35 A GB 14504/35A GB 1450435 A GB1450435 A GB 1450435A GB 436136 A GB436136 A GB 436136A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- coil
- circuit
- main circuit
- self
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 101100379079 Emericella variicolor andA gene Proteins 0.000 abstract 1
- 238000009877 rendering 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
436,136. Control of D.C. andA.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. May 17, 1935, No. 14504. Convention date, Mav 18, 1934. [Class 38 (iii)] Self reducing resistance 6 is connected in series with an electric motor or similar apparatus 1 to prevent excessive starting current, and a repeated switching - in before the resistance is sufficiently cooled is prevented by automatically rendering inoperative the operating coil 9 of an electromagnetic switch 7 in the main circuit. The coil 9 may be connected in parallel with an additional selfreducing resistance 12 which carries current during the whole of the working period, so that, after the main circuit is opened, the resistance 12 must cool sufficiently to allow an operative current to flow through the coil 9 when the circuit is reclosed. A resistance 13 in the circuit of the resistance 12 is dimensioned so that the resistance 12 cools sufficiently only after the resistance 6 is sufficiently cooled to control the motor 1 effectively. In a modification the self-reducing resistance in the main circuit serves also to control the coil 9. In this arrangement, Fig. 2, not shown, the coil 9 is connected across the self-reducing resistance in the main circuit when the switch 7 is opened, and disconnected therefrom when the switch is closed. The arrangements are applicable to three-phase supplies, and in further modifications, Fig. 3, not shown, the circuit of the coil 9 includes contacts of a thermal switching element heated either by the main current or by the heat of the selfreducing series resistance.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE436136X | 1934-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB436136A true GB436136A (en) | 1935-10-04 |
Family
ID=6506865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14504/35A Expired GB436136A (en) | 1934-05-18 | 1935-05-17 | Improvements in or relating to starting systems for electric motors or other electric apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB436136A (en) |
-
1935
- 1935-05-17 GB GB14504/35A patent/GB436136A/en not_active Expired
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