GB1152020A - Thermal Starting Arrangement for a Single-Phase Asynchronous Motor - Google Patents
Thermal Starting Arrangement for a Single-Phase Asynchronous MotorInfo
- Publication number
- GB1152020A GB1152020A GB36519/67A GB3651967A GB1152020A GB 1152020 A GB1152020 A GB 1152020A GB 36519/67 A GB36519/67 A GB 36519/67A GB 3651967 A GB3651967 A GB 3651967A GB 1152020 A GB1152020 A GB 1152020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heater
- bimetal
- contacts
- motor
- phase asynchronous
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H61/00—Electrothermal relays
- H01H61/002—Structural combination of a time delay electrothermal relay with an electrothermal protective relay, e.g. a start relay
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Thermally Actuated Switches (AREA)
- Motor And Converter Starters (AREA)
Abstract
1,152,020. Control of A.C. motors. DANFOSS A/S. 9 Aug., 1967 [29 Aug., 1966], No. 36519/67. Heading H2J. [Also in Division H1] A bimetal starting switch for a single phase asynchronous motor is opened by a first heater 7 of high thermal capacity, the heat stored therein being sufficient to keep the switch open until a second heater 9, shunting the contacts, heats up to maintain the contacts open for the remainder of the time that the motor is energized. The first heater 7, of carbon or silicon carbide, is in series with the bimetal 10 and the resistive type start winding 1 of the motor and preferably its resistance is 50% of the total. The second heater 9 preferably has a high positive temperature coefficient; it remains in series with the winding 3 but reduces the current to a negligible value. As shown, the heater 9 is annular, and the bimetal strip 10 is attached to it by a rivet 11. In an alternative arrangement (Fig. 2, not shown), the first heater is placed between two bimetal strips, each of which carries one of the contacts, and this heater is not part of the shunt path of the second heater.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0050972 | 1966-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1152020A true GB1152020A (en) | 1969-05-14 |
Family
ID=7053050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36519/67A Expired GB1152020A (en) | 1966-08-29 | 1967-08-09 | Thermal Starting Arrangement for a Single-Phase Asynchronous Motor |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3495150A (en) |
| BE (1) | BE702989A (en) |
| CH (1) | CH477120A (en) |
| DE (1) | DE1538430B2 (en) |
| DK (1) | DK123797B (en) |
| ES (1) | ES344439A1 (en) |
| GB (1) | GB1152020A (en) |
| NL (1) | NL6711061A (en) |
| SE (1) | SE345354B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683250A (en) * | 1970-07-29 | 1972-08-08 | Ecc Corp | Timed induction motor start switch utilizing positive temperature coefficient thermistor and semi-conductor switching device |
| US3832612A (en) * | 1970-07-29 | 1974-08-27 | Franklin Electric Co Inc | Electrical timing circuit for controlling energization of a load |
| DE2712951A1 (en) * | 1977-03-24 | 1978-10-05 | Bosch Gmbh Robert | BIMETAL WITH AN ELECTRIC HEATING ELEMENT |
| DE3710672C2 (en) * | 1987-03-31 | 1997-05-15 | Hofsaes Geb Zeitz Ulrika | Temperature monitor with a housing |
| JPH0834075B2 (en) * | 1988-03-29 | 1996-03-29 | 東部電気株式会社 | Thermal switch |
| US7800477B1 (en) * | 2007-03-20 | 2010-09-21 | Thermtrol Corporation | Thermal protector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB392490A (en) * | 1932-01-16 | 1933-05-18 | Gen Electric | Improvements in and relating to thermal time relays for controlling the auxiliary windings of induction motors |
| US2417912A (en) * | 1944-08-31 | 1947-03-25 | Gen Motors Corp | Split-phase motor thermal starting switch |
| US2618721A (en) * | 1945-06-16 | 1952-11-18 | Gen Motors Corp | Control with column loaded strip |
-
1966
- 1966-08-29 DE DE19661538430 patent/DE1538430B2/en active Pending
-
1967
- 1967-06-30 SE SE10050/67*A patent/SE345354B/xx unknown
- 1967-08-05 CH CH1113067A patent/CH477120A/en not_active IP Right Cessation
- 1967-08-09 GB GB36519/67A patent/GB1152020A/en not_active Expired
- 1967-08-10 NL NL6711061A patent/NL6711061A/xx unknown
- 1967-08-23 BE BE702989D patent/BE702989A/xx unknown
- 1967-08-25 ES ES344439A patent/ES344439A1/en not_active Expired
- 1967-08-25 US US663273A patent/US3495150A/en not_active Expired - Lifetime
- 1967-08-29 DK DK434167AA patent/DK123797B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6711061A (en) | 1968-03-01 |
| CH477120A (en) | 1969-08-15 |
| ES344439A1 (en) | 1968-10-01 |
| SE345354B (en) | 1972-05-23 |
| DE1538430A1 (en) | 1969-06-12 |
| DE1538430B2 (en) | 1970-08-13 |
| US3495150A (en) | 1970-02-10 |
| BE702989A (en) | 1968-01-15 |
| DK123797B (en) | 1972-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |