GB269177A - Improvements in and relating to electric circuit interrupters - Google Patents
Improvements in and relating to electric circuit interruptersInfo
- Publication number
- GB269177A GB269177A GB9345/27A GB934527A GB269177A GB 269177 A GB269177 A GB 269177A GB 9345/27 A GB9345/27 A GB 9345/27A GB 934527 A GB934527 A GB 934527A GB 269177 A GB269177 A GB 269177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- current
- poles
- flux
- bucking
- 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
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
- H01H77/08—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening retained closed by permanent or remanent magnetism and opened by windings acting in opposition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/26—Electromagnetic mechanisms with windings acting in opposition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
Abstract
269,177. British Thomson-Houston Co., Ltd., (Assignees of Roberson, F.). April 9, 1926, [Convention date]. Automatic circucit-breakers.-In the circuitbreaker described in Specification 252,185, in which two contact-arms 10, 11, Fig. 1, are maintained in contact with one. another (after actuation by hand or electromagnetically) by the poles 20, 21 of an electromagnetic, in order to adapt the breaker to A.C. or D.C. circuits in which the current may be in either direction or may reverse, the bucking-bar 26, Figs. 1 and 2, instead of being of U-form is S- or Z-shaped so that the main current through it weakens the hold-on flux for one of the contact arms and strengthens it for the other according to the direction of the main current. In a modification the same result is obtained by using a separate magnetic core and separate excitation for each of the pairs of poles 20, 21 and employing as before a U-shaped bucking-bar which may be energized from a current transformer in the line. In this case the flux across the two pole gaps instead of being in the same direction as in Fig. 1 are in opposite directions. Specifications 125,279, and 29980/10 are referred to also.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US100976A US1687515A (en) | 1926-04-09 | 1926-04-09 | Circuit interrupter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB269177A true GB269177A (en) | 1927-12-22 |
Family
ID=22282488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9345/27A Expired GB269177A (en) | 1926-04-09 | 1927-04-05 | Improvements in and relating to electric circuit interrupters |
Country Status (3)
Country | Link |
---|---|
US (1) | US1687515A (en) |
DE (2) | DE446234C (en) |
GB (1) | GB269177A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673263A (en) * | 1951-05-18 | 1954-03-23 | Gen Electric | Thermomagnetic electric relay |
US3235773A (en) * | 1963-09-16 | 1966-02-15 | Ite Circuit Breaker Ltd | Two-pole high speed breaker |
US3373383A (en) * | 1965-02-02 | 1968-03-12 | Shoichi Shimada | Automatic current limiting circuit breaker |
US3453566A (en) * | 1966-02-05 | 1969-07-01 | Shoichi Shimada | Automatic current limiting circuit breaker |
US3777293A (en) * | 1972-10-30 | 1973-12-04 | Tokyo Shibaura Electric Co | No-fuse circuit breaker |
-
1926
- 1926-04-09 US US100976A patent/US1687515A/en not_active Expired - Lifetime
- 1926-05-18 DE DEA47784D patent/DE446234C/en not_active Expired
-
1927
- 1927-04-05 GB GB9345/27A patent/GB269177A/en not_active Expired
- 1927-04-10 DE DEA50591D patent/DE461448C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1687515A (en) | 1928-10-16 |
DE461448C (en) | 1928-06-22 |
DE446234C (en) | 1927-06-27 |
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