GB761661A - Improvements in or relating to electrical circuit current limiting devices - Google Patents
Improvements in or relating to electrical circuit current limiting devicesInfo
- Publication number
- GB761661A GB761661A GB2122653A GB2122653A GB761661A GB 761661 A GB761661 A GB 761661A GB 2122653 A GB2122653 A GB 2122653A GB 2122653 A GB2122653 A GB 2122653A GB 761661 A GB761661 A GB 761661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- resistance
- july
- relating
- electrical 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
- H01H75/02—Details
- H01H75/04—Reset mechanisms for automatically reclosing a limited number of times
- H01H75/06—Reset mechanisms for automatically reclosing a limited number of times effecting one reclosing action only
Landscapes
- Magnetic Treatment Devices (AREA)
Abstract
761,661. Electromagnetic switches. MECCANO, Ltd. July 5, 1954 [July 31, 1953], No. 21226/53. Class 38(5) The resistance wire 4 of an inductance current-limiter is wound on the lower limb of a laminated U-shaped core or, as shown, over the operating winding on the other limb. The ends of the limbs are inclined at 1a, 1b to co-operate with an armature 12 carried on one, 9, of a pair of spring blades 9, 10, carrying contacts 11a, 11b which normally short-circuit the resistance 4 but separate after a predetermined travel of the armature, to insert the resistance, which acts as a reinforcing winding to assist retention of the armature. An indicator bell or lamp may also shunt the contacts. The natural period of the moving system is such as to preclude operation by transients. A phosphor-bronze strip 14 enables the operating current to be preset. A copper slug may be fitted on the lower limb to delay opening.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE530667D BE530667A (en) | 1953-07-31 | ||
| GB2122653A GB761661A (en) | 1953-07-31 | 1953-07-31 | Improvements in or relating to electrical circuit current limiting devices |
| CH323448D CH323448A (en) | 1953-07-31 | 1954-07-28 | Current limiting device |
| FR1105836D FR1105836A (en) | 1953-07-31 | 1954-07-30 | Improvements to current limiters for electrical circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2122653A GB761661A (en) | 1953-07-31 | 1953-07-31 | Improvements in or relating to electrical circuit current limiting devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761661A true GB761661A (en) | 1956-11-21 |
Family
ID=10159318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2122653A Expired GB761661A (en) | 1953-07-31 | 1953-07-31 | Improvements in or relating to electrical circuit current limiting devices |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE530667A (en) |
| CH (1) | CH323448A (en) |
| FR (1) | FR1105836A (en) |
| GB (1) | GB761661A (en) |
-
0
- BE BE530667D patent/BE530667A/xx unknown
-
1953
- 1953-07-31 GB GB2122653A patent/GB761661A/en not_active Expired
-
1954
- 1954-07-28 CH CH323448D patent/CH323448A/en unknown
- 1954-07-30 FR FR1105836D patent/FR1105836A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE530667A (en) | |
| CH323448A (en) | 1957-07-31 |
| FR1105836A (en) | 1955-12-08 |
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