GB407853A - Quick-action automatic electric circuit-breaker - Google Patents
Quick-action automatic electric circuit-breakerInfo
- Publication number
- GB407853A GB407853A GB18517/33A GB1851733A GB407853A GB 407853 A GB407853 A GB 407853A GB 18517/33 A GB18517/33 A GB 18517/33A GB 1851733 A GB1851733 A GB 1851733A GB 407853 A GB407853 A GB 407853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- holding
- circuit
- releasing
- electromagnet
- 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
- 230000004907 flux Effects 0.000 abstract 4
- 230000002028 premature Effects 0.000 abstract 1
Classifications
-
- 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
407,853. Automatic circuit-breakers and electromagnetic switches. MASCHINENFABRIK OERLIKON, Oerlikon, near Zurich, Switzerland. June 29, 1933, No. 18517. Convention date, July 5, 1932. [Class 38 (v).] In a quick - acting automatic circuitbreaker having oppositely-acting holding and releasing electromagnets, the releasing coil, energized by the load current, detaching the armature from the holding coil to open the circuitbreaker, in order to prevent an increase in the holding current during release consequent on the diminution of flux in the magnetic circuit of the holding coil, caused by the movement of the armature, which might cause an undesired reclosure of the circuit breaker, a second coil in series with the holding coil is wound on the releasing electromagnet. An E.M.F. is induced in this coil during release by the increase in flux of the releasing electromagnet, this E.M.F. being opposite to that induced in the holding coil as the result of diminution of the holding flux. As shown in the Figure the holding coil 4 on the holding electromagnet 2 is in series with the second coil 8 on the releasing electromagnet 6 which is energised by a coil 9 in series with the main circuit. When the armature 3 commences to move due to excessive current in the coil 9 the voltages induced in the coils 48 due to changes in flux of the holding and releasing electromagnets oppose each other so that no appreciable increase in the holding current occurs and no tendency for a premature reclosure of the circuit-breaker will be present. If desired the momentary E.M.F. induced in coil 8 may exceed that induced in coil 4 so that a temporary reduction of the holding current may take place. The release of the circuit-breaker may be further assisted by a coil 5 on the holding electromagnet which is in series with the coil 9 in the load circuit and which is wound to oppose the holding electromagnet 4. A constantly acting force indicated by K may be provided to assist the releasing movement of the circuit-breaker.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH407853X | 1932-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB407853A true GB407853A (en) | 1934-03-29 |
Family
ID=4514386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18517/33A Expired GB407853A (en) | 1932-07-05 | 1933-06-29 | Quick-action automatic electric circuit-breaker |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE397008A (en) |
| CH (1) | CH164331A (en) |
| DE (1) | DE597040C (en) |
| FR (1) | FR757088A (en) |
| GB (1) | GB407853A (en) |
| NL (1) | NL37235C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2841669A (en) * | 1955-11-29 | 1958-07-01 | Gen Electric | Solenoid-operated relay |
| CN114930479A (en) * | 2020-05-22 | 2022-08-19 | Abb瑞士股份有限公司 | Switching system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743092C (en) * | 1942-03-20 | 1943-12-17 | F Raschig G M B H Dr | Binder from sulphite waste liquor |
| DE956789C (en) * | 1943-12-15 | 1957-01-24 | Siemens Ag | Magnet arrangement |
-
0
- BE BE397008D patent/BE397008A/xx unknown
- NL NL37235D patent/NL37235C/xx active
-
1932
- 1932-07-05 CH CH164331D patent/CH164331A/en unknown
- 1932-07-28 DE DEM120572D patent/DE597040C/en not_active Expired
-
1933
- 1933-06-16 FR FR757088D patent/FR757088A/en not_active Expired
- 1933-06-29 GB GB18517/33A patent/GB407853A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2841669A (en) * | 1955-11-29 | 1958-07-01 | Gen Electric | Solenoid-operated relay |
| CN114930479A (en) * | 2020-05-22 | 2022-08-19 | Abb瑞士股份有限公司 | Switching system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR757088A (en) | 1933-12-20 |
| CH164331A (en) | 1933-09-30 |
| NL37235C (en) | |
| BE397008A (en) | |
| DE597040C (en) | 1934-05-16 |
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