GB1442373A - Starting device for a single-phase asnychronous electric motor - Google Patents
Starting device for a single-phase asnychronous electric motorInfo
- Publication number
- GB1442373A GB1442373A GB4638973A GB4638973A GB1442373A GB 1442373 A GB1442373 A GB 1442373A GB 4638973 A GB4638973 A GB 4638973A GB 4638973 A GB4638973 A GB 4638973A GB 1442373 A GB1442373 A GB 1442373A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- current
- glow discharge
- starting
- resistor
- 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
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
1442373 Control of A.C. motors DANFOSS AS 4 Oct 1973 [4 Oct 1972] 46389/73 Heading H2J A single phase asynchronous motor 1 having main and starting windings 2, 3 is controlled by a starting device comprising thermal switches 7, 9 and a resistor 8, each switch being of the type responsive to either the current flowing through it when closed or the glow discharge across it when open, switch 7 being normally-closed, switch 9 normally-open and the value of resistor 8 being chosen so that during starting the following sequence of operations occur: (1) Closure of main switch 4 causes a low current to pass through members 3, 7, 8. (2) The resultant glow discharge produced by resistor 8 across switch 9 causes it to close after a time delay T 1 and produce full starting current through the winding 3. (3) This full current causes a bimetal element 10 to open switch 7 after a tune delay T 2 to reduce the current to another low value (dependent on the glow discharge ecross switch 7). (4) Switch 9, which has been kept closed by a bimetal 11 during the passage of full current, opens after a time delay following the opening of switch 7, thus further reducing the current and terminating the starting action, since the resultant voltage across resistor 8 is insufficient to produce further glow discharge across and closure of switch 9, and the switch 7 is maintained open by its glow discharge until the switch 4 is opened to de-energize the motor. Typical characteristics are discussed relating the voltage, current and condition of members 3, 7, 8 and 9 to time, Fig. 2 (not shown), and comparison is made with the starting device described in Specification 1,086,968.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722248680 DE2248680C2 (en) | 1972-10-04 | 1972-10-04 | Starting device for a single-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1442373A true GB1442373A (en) | 1976-07-14 |
Family
ID=5858166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4638973A Expired GB1442373A (en) | 1972-10-04 | 1973-10-04 | Starting device for a single-phase asnychronous electric motor |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS4972607A (en) |
| AT (1) | AT324505B (en) |
| AU (1) | AU476835B2 (en) |
| BR (1) | BR7307708D0 (en) |
| CA (1) | CA980853A (en) |
| DE (1) | DE2248680C2 (en) |
| DK (1) | DK139406C (en) |
| ES (1) | ES419289A1 (en) |
| FR (1) | FR2202399A1 (en) |
| GB (1) | GB1442373A (en) |
| IT (1) | IT994674B (en) |
| SE (1) | SE394060B (en) |
-
1972
- 1972-10-04 DE DE19722248680 patent/DE2248680C2/en not_active Expired
-
1973
- 1973-08-13 AT AT710173A patent/AT324505B/en not_active IP Right Cessation
- 1973-08-16 AU AU59292/73A patent/AU476835B2/en not_active Expired
- 1973-08-24 IT IT6954073A patent/IT994674B/en active
- 1973-09-04 DK DK484673A patent/DK139406C/en active
- 1973-10-01 CA CA182,284A patent/CA980853A/en not_active Expired
- 1973-10-02 JP JP11092873A patent/JPS4972607A/ja active Pending
- 1973-10-03 SE SE7313457A patent/SE394060B/en unknown
- 1973-10-03 ES ES419289A patent/ES419289A1/en not_active Expired
- 1973-10-04 FR FR7335569A patent/FR2202399A1/fr not_active Withdrawn
- 1973-10-04 GB GB4638973A patent/GB1442373A/en not_active Expired
- 1973-10-04 BR BR770873A patent/BR7307708D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU476835B2 (en) | 1976-10-07 |
| IT994674B (en) | 1975-10-20 |
| AU5929273A (en) | 1975-02-20 |
| DK139406C (en) | 1979-07-02 |
| ES419289A1 (en) | 1976-04-16 |
| AT324505B (en) | 1975-09-10 |
| DK139406B (en) | 1979-02-12 |
| FR2202399A1 (en) | 1974-05-03 |
| JPS4972607A (en) | 1974-07-13 |
| CA980853A (en) | 1975-12-30 |
| BR7307708D0 (en) | 1974-08-22 |
| DE2248680A1 (en) | 1974-03-14 |
| SE394060B (en) | 1977-05-31 |
| DE2248680B1 (en) | 1974-03-14 |
| DE2248680C2 (en) | 1974-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8305957A1 (en) | Door-open alarm device for a refrigerating appliance | |
| GB1180354A (en) | Starting Switch Arrangement | |
| US3497997A (en) | Quarterline stop control system for power driven revolving doors | |
| GB1356958A (en) | ||
| GB1466988A (en) | Electric motor control systems | |
| GB1442373A (en) | Starting device for a single-phase asnychronous electric motor | |
| GB1288592A (en) | ||
| GB1125657A (en) | Motor starting circuit | |
| US3612972A (en) | Adjusting drive | |
| GB1086968A (en) | Starting device for a single-phase asynchronous motor | |
| GB1096513A (en) | Improvements relating to starting arrangements for single-phase motors | |
| GB1158693A (en) | Switching Means for Starting a Single-Phase Motor | |
| US2707261A (en) | Motor speed reduction device | |
| GB1404154A (en) | Starting arrangement for electronically controlled single-phase asynchronous motors primarily for teleprinters | |
| US2855556A (en) | Inching mechanism | |
| GB1194809A (en) | A Starting Circuit for a Single-Phase Asynchronous Motor | |
| ES391962A1 (en) | Single-phase motor with auxiliary coils selectively short-circuited by a solid state switch element | |
| SU124215A1 (en) | Duplex controller | |
| SU422108A1 (en) | ||
| SU450253A1 (en) | Trigger | |
| JPS5788881A (en) | Control device for synchrnous motor | |
| GB922067A (en) | Improvements in and relating to electric motors | |
| GB1166911A (en) | A System for Controlling the Motors of at least two On-load Transformer Voltage Changers | |
| GB1108747A (en) | Switching circuits for electric motors | |
| JPS5532402A (en) | Starter for ac motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |