GB291819A - An arrangement for automatically interrupting the network circuit of polyphase motors - Google Patents
An arrangement for automatically interrupting the network circuit of polyphase motorsInfo
- Publication number
- GB291819A GB291819A GB694/27A GB69427A GB291819A GB 291819 A GB291819 A GB 291819A GB 694/27 A GB694/27 A GB 694/27A GB 69427 A GB69427 A GB 69427A GB 291819 A GB291819 A GB 291819A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armatures
- retaining circuit
- phase
- arrangement
- network circuit
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
- H02H3/13—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load for multiphase applications, e.g. phase interruption
Landscapes
- Breakers (AREA)
- Electromagnets (AREA)
- Protection Of Generators And Motors (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
291,819. Scholze, R., and Keller, G. (trading as Strobach, P.). Jan. 10, 1927. Controllers, actuating. - In the protection of polyphase electric motors, electromagnets EI, EII, Em are inserted in each phase, and each has pivoted upon it two or more armatures, one e1, which falls away under the action of a spring f1, at a certain minimum current and thereby breaks at d1 the retaining circuit of the main electromagnetic switch SI, SII, SIII, and. the other er1, which is attracted under retardation due to a dash-pot s at a certain adjustable overload value to break at d2 the same retaining circuit. Thus the main switch opens all phases with minimum or maximum current in any phase. A third armature er without retardation may be used to open the retaining circuit on sudden excessive overload. The three armatures may serve independently to trip the main switch which in this form is retained closed by a latch v acted on by three pins connected to the armatures.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST40772D DE460437C (en) | 1926-02-28 | 1926-03-25 | Circuit breaker for multi-phase power networks |
GB694/27A GB291819A (en) | 1926-02-28 | 1927-01-10 | An arrangement for automatically interrupting the network circuit of polyphase motors |
US161892A US1800256A (en) | 1926-02-28 | 1927-01-18 | Arrangement for the automatic interrupting of the net circuit of multiphase motors |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD460437X | 1926-02-28 | ||
DE1800256X | 1926-03-24 | ||
GB694/27A GB291819A (en) | 1926-02-28 | 1927-01-10 | An arrangement for automatically interrupting the network circuit of polyphase motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB291819A true GB291819A (en) | 1928-06-11 |
Family
ID=51831960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB694/27A Expired GB291819A (en) | 1926-02-28 | 1927-01-10 | An arrangement for automatically interrupting the network circuit of polyphase motors |
Country Status (3)
Country | Link |
---|---|
US (1) | US1800256A (en) |
DE (1) | DE460437C (en) |
GB (1) | GB291819A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE753230C (en) * | 1938-07-15 | 1953-04-16 | Ver Kaliwerke Salzdetfurth A G | Protective circuit for three-phase consumers in connection with a contactor switch |
GB549421A (en) * | 1941-06-13 | 1942-11-20 | Allen West & Co Ltd | Improvements in or relating to relays for protecting electric circuits |
US2539832A (en) * | 1942-10-26 | 1951-01-30 | Claude M Hathaway | Apparatus for producing oscillographic records |
US2553949A (en) * | 1945-05-09 | 1951-05-22 | Screw Machine Products Co | Circuit protecting device for motors and the like |
US2486613A (en) * | 1945-10-19 | 1949-11-01 | Ite Circuit Breaker Ltd | Two-armature selectively retarded electromagnet |
US2558524A (en) * | 1946-10-04 | 1951-06-26 | North Electric Mfg Company | Relay construction |
US2559913A (en) * | 1947-07-07 | 1951-07-10 | Frank T Foshee | Overcurrent protective system for motor circuits |
US2632820A (en) * | 1949-06-10 | 1953-03-24 | Clark Controller Co | Magnetically operated control mechanism |
US2609425A (en) * | 1949-10-24 | 1952-09-02 | Winifred J Turnupseed | Protective system for electrical apparatus connected with polyphase networks |
US2767356A (en) * | 1952-04-03 | 1956-10-16 | Olsson Gunnar Daniel | Multiple armature marginal relay |
US2794157A (en) * | 1952-12-30 | 1957-05-28 | Allen E Chisholm | Polarized snap action magnetic switch |
US2838718A (en) * | 1953-05-28 | 1958-06-10 | Ite Circuit Breaker Ltd | Current limiting protection for contactors |
US3001099A (en) * | 1959-03-23 | 1961-09-19 | Riley E Larkey | Protecting device for three phase motor having shiftable rotor as a part of the assembly |
US3139557A (en) * | 1960-09-09 | 1964-06-30 | Steelman Electric Mfg Company | Overload protection device for polyphase systems |
US4068280A (en) * | 1976-05-17 | 1978-01-10 | Basile Pietro | Automatic circuit restoration device for polyphase feed lines |
-
1926
- 1926-03-25 DE DEST40772D patent/DE460437C/en not_active Expired
-
1927
- 1927-01-10 GB GB694/27A patent/GB291819A/en not_active Expired
- 1927-01-18 US US161892A patent/US1800256A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE460437C (en) | 1928-06-05 |
US1800256A (en) | 1931-04-14 |
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