GB122085A - Improvements in Electric Motor Controllers. - Google Patents
Improvements in Electric Motor Controllers.Info
- Publication number
- GB122085A GB122085A GB493918A GB493918A GB122085A GB 122085 A GB122085 A GB 122085A GB 493918 A GB493918 A GB 493918A GB 493918 A GB493918 A GB 493918A GB 122085 A GB122085 A GB 122085A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- motor
- controller
- running
- segments
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
122,085. Igranic Electric Co., (Cutler- Hammer Manufacturing Co.). March 20, 1918. Controllers, polyphase.-In a polyphase motor controller which connects the motor to the supply through compensator windings for starting and through overload protective means for running the motor windings are permanently connected to the compensator windings at their tapping-points. The drum controller C has contact segments arranged in three sets corresponding to the three leads L<1>, L<2>, L<3> of the supply, and a hold-on coil 25 causes a latch 23 to hold the controller when it is in the running position. When the segments are moved to the left from the position shown in Fig. 1, the compensating-windings 1, 2 are connected across the phases L<1> L<2>, L<3> L<1>, and the motor is supplied from the lead L<1> and intermediate taps on the windings 1, 2. When the segments are moved to the right for running, the compensator-windings are disconnected and the motor is supplied directly from the mains. The windings of the overload relays 3, 4 are included in the circuits of the leads L<3>, L<2> and an excess current causes them to operate so that the winding 25 releases the latch 23 and a spring returns the controller to zero. In a modification, the change of connexions for a three-phase motor is obtained by using a three-pole double-throw knife switch. In another modification, Fig. 3, for a two-phase motor, the controller drum has four sets of segments corresponding to the four leads L<1>, L<2>, L<3>, L<4>, and the motor is supplied through the compensating-windings 56, 57 for starting and through the fuses 58, 59, 60, 61 for running.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB493918A GB122085A (en) | 1918-03-20 | 1918-03-20 | Improvements in Electric Motor Controllers. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB493918A GB122085A (en) | 1918-03-20 | 1918-03-20 | Improvements in Electric Motor Controllers. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB122085A true GB122085A (en) | 1919-01-16 |
Family
ID=32670237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB493918A Expired GB122085A (en) | 1918-03-20 | 1918-03-20 | Improvements in Electric Motor Controllers. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB122085A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102270545A (en) * | 2011-05-12 | 2011-12-07 | 沈阳工业大学 | Knife switch used for switching between power source and frequency converter |
-
1918
- 1918-03-20 GB GB493918A patent/GB122085A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102270545A (en) * | 2011-05-12 | 2011-12-07 | 沈阳工业大学 | Knife switch used for switching between power source and frequency converter |
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