GB665941A - Control systems for electric motors driving centrifuges and the like - Google Patents
Control systems for electric motors driving centrifuges and the likeInfo
- Publication number
- GB665941A GB665941A GB2026349A GB2026349A GB665941A GB 665941 A GB665941 A GB 665941A GB 2026349 A GB2026349 A GB 2026349A GB 2026349 A GB2026349 A GB 2026349A GB 665941 A GB665941 A GB 665941A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- voltage
- tapping
- motors
- drum
- 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
- H02P1/24—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual ac commutator motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
665,941. Control of A.C. motors; controllers. DETREX CORPORATION. Aug. 3, 1949. No. 20263/49. Class 38 (iii). A single-phase motor M which drives a centrifuge 5 or the like is accelerated in timed steps so as to allow the initially unbalanced load within the drum to be adjusted before the machine reaches its maximum speed. A timer motor M1 drives a cam shaft and is started by closure of push-button 67 which is shortcircuited bv cam-operated contacts 27a, 28a, to allow release of the button. Relays R, R1, R2, R3, are then operated in succession at timed intervals so that full line voltage is first applied to the driving motor to overcome the inertia of the drum and to accelerate the motor to a moderate speed. The motor voltage is then reduced by the connection of its armature to a tapping on an auto-transformer 9, the connection afterwards being shifted to a higher voltage-tapping. Finally, full line voltage is again applied to the motor which accelerates to its maximum speed. When the cam shaft has completed one revolution the motors M, M1, are de-energized and the cycle is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2026349A GB665941A (en) | 1949-08-03 | 1949-08-03 | Control systems for electric motors driving centrifuges and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2026349A GB665941A (en) | 1949-08-03 | 1949-08-03 | Control systems for electric motors driving centrifuges and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665941A true GB665941A (en) | 1952-02-06 |
Family
ID=10143099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2026349A Expired GB665941A (en) | 1949-08-03 | 1949-08-03 | Control systems for electric motors driving centrifuges and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665941A (en) |
-
1949
- 1949-08-03 GB GB2026349A patent/GB665941A/en not_active Expired
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