GB597088A - Improvements in or relating to torque-producing electro-responsive devices - Google Patents
Improvements in or relating to torque-producing electro-responsive devicesInfo
- Publication number
- GB597088A GB597088A GB17875/44A GB1787544A GB597088A GB 597088 A GB597088 A GB 597088A GB 17875/44 A GB17875/44 A GB 17875/44A GB 1787544 A GB1787544 A GB 1787544A GB 597088 A GB597088 A GB 597088A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flux
- torque
- proportional
- relay
- current
- 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
- H02H3/42—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 product of voltage and current
- H02H3/427—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 product of voltage and current using induction relays
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
597,088. Electromagnetic relays; protective cut - out arrangements. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Sept. 19, 1944, No. 17875. Convention date, Sept. 22, 1943. [Class 38(v)] [Also in Group XXXVI] A torque-producing relay is energised by means responsive to a product, e.g. (E + I) (E - I), of different vectorial sum of E and I where these symbols represent alternating- current functions of line-voltage and linecurrent. A loop 10, pivoted at 11 and carrying a contact arm 19, is energised by flux produced in a core member 7 by current flowing in coils 17, 18. This loop reacts with the flux produced in an air-gap 8 by current flowing in coils 15, 16, mounted on a central leg 5 of the same core. If the flux produced in the member 7 is proportional to (E + I) and the flux in the air-gap 8 is proportional to (E - I), the torque produced is proportional to (E<2> - I<2>) and the relay responds to apparent line-impedance. By proper selection of the exciting-currents in the windings 15-18 and in some cases by the use of a phase-shifter, the relay may be made responsive to reactance or resistance or it may serve as a directional, differential of overcurrent relay. In a modified form, Fig. 3, the voltage and current functions are combined in three-winding transformers 29, 30 to obtain secondary currents Is and ID which produce fluxes in poles 52, 54 and 51, 53, proportional to (E + I) and (E - I). Conducting loops A, B form a pivoted framework carrying the contact-arm 19 and each flux induces a current in one of the loops which reacts with the other flux to produce a torque. The Specfication as open to inspection under Sect. 91 comprises also a reference to the omission of one or more of the windings shown in Fig. 1 in order to obtain reaction or directional response. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US597088XA | 1943-09-22 | 1943-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB597088A true GB597088A (en) | 1948-01-19 |
Family
ID=22024738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17875/44A Expired GB597088A (en) | 1943-09-22 | 1944-09-19 | Improvements in or relating to torque-producing electro-responsive devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB597088A (en) |
-
1944
- 1944-09-19 GB GB17875/44A patent/GB597088A/en not_active Expired
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