GB851143A - Improvements in or relating to electric circuit interrupters - Google Patents
Improvements in or relating to electric circuit interruptersInfo
- Publication number
- GB851143A GB851143A GB1131/58A GB113158A GB851143A GB 851143 A GB851143 A GB 851143A GB 1131/58 A GB1131/58 A GB 1131/58A GB 113158 A GB113158 A GB 113158A GB 851143 A GB851143 A GB 851143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- main
- breaker
- circuit
- stud
- 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
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
851,143. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC CORPORATION. Jan. 13, 1958 [Jan. 22, 1957], No. 1131/58. Class 38 (5). A circuit-interrupter with fixed and moving, main and arcing contacts and a blowout coil, has an inductance between a main contact and a terminal stud which is connected to one end of the blowout coil. Fig. 3 shows diagrammatically a D.C. circuit-breaker having a main contact 2 and arcing contact 3 mounted on a contact arm 17 actuated through toggles 30, 35 controlled by a closing magnet 41, lever 36 and holding magnet 21. The main contact 2 cooperates with the main fixed contact 1 mounted on a terminal stud 13, and the arcing contact 3 co-operates with the fixed arcing contact 4 which is insulated from the stud 13 by a plate 13a. A blowout coil 8 and arc runners 6, 44 are connected as shown, and a plurality of iron laminations 46 are mounted around the stud 13. Under normal load conditions the current passes mainly through the main contacts 1, 2. Under fault conditions, however, the fault current with its steep wave front is forced through the arcing contacts 3, 4 and blowout coil 8 by the high inductance of the stud 13. Fig. 8 shows a similar circuit-breaker having moving contacts 2, 3 co-operating with fixed contacts 1, 4. The arc runner 6 is spaced from the contact 4 and a pair of auxiliary blowout coils 63, mounted on the same magnetic structure as the coil 8, and with a capacitor C in series, are connected across main contact studs 13, 20, the stud 13 being encircled by laminations 46 as in Fig. 3. During opening of the circuit-breaker, the increasing arc voltage is applied to the auxiliary blowout coils 63 so that they assist the main blowout coil 8. The capacitor C lowers the timeconstant of the coils 63 and prevents current passing through them with the breaker open. In an A.C. circuit-breaker (Fig. 11, not shown) the auxiliary coils 63 are in series with a switch which is open when the circuit-breaker is fully open.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US635401A US2970196A (en) | 1957-01-22 | 1957-01-22 | Circuit interrupters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB851143A true GB851143A (en) | 1960-10-12 |
Family
ID=24547647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1131/58A Expired GB851143A (en) | 1957-01-22 | 1958-01-13 | Improvements in or relating to electric circuit interrupters |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2970196A (en) |
| DE (2) | DE1041568B (en) |
| FR (1) | FR1198484A (en) |
| GB (1) | GB851143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6304014B1 (en) | 1997-10-02 | 2001-10-16 | Synaptics (Uk) Limited | Motor control system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420784A (en) * | 1981-12-04 | 1983-12-13 | Eaton Corporation | Hybrid D.C. power controller |
| US8619395B2 (en) | 2010-03-12 | 2013-12-31 | Arc Suppression Technologies, Llc | Two terminal arc suppressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1503091A (en) * | 1920-11-02 | 1924-07-29 | Gen Electric | Magnetic blow-out device |
| US1680674A (en) * | 1923-09-22 | 1928-08-14 | Gen Electric | Electric switch |
| US1623851A (en) * | 1926-07-23 | 1927-04-05 | Gen Electric | Circuit interrupter |
| US1722046A (en) * | 1927-07-22 | 1929-07-23 | Westinghouse Electric & Mfg Co | Shunt blowout device |
| DE537294C (en) * | 1928-01-10 | 1931-10-31 | Aeg | Switch with holding magnet excited by direct current and stray yoke |
| FR837964A (en) * | 1937-11-08 | 1939-02-23 | Materiel Electrique S W Le | Improvements to circuit breakers |
| US2437863A (en) * | 1940-06-10 | 1948-03-16 | Ite Circuit Breaker Ltd | Circuit breaker movable contact |
-
1957
- 1957-01-22 US US635401A patent/US2970196A/en not_active Expired - Lifetime
-
1958
- 1958-01-13 GB GB1131/58A patent/GB851143A/en not_active Expired
- 1958-01-20 DE DEW22589A patent/DE1041568B/en active Pending
- 1958-01-20 DE DEW22590A patent/DE1038632B/en active Pending
- 1958-01-21 FR FR1198484D patent/FR1198484A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6304014B1 (en) | 1997-10-02 | 2001-10-16 | Synaptics (Uk) Limited | Motor control system |
Also Published As
| Publication number | Publication date |
|---|---|
| US2970196A (en) | 1961-01-31 |
| DE1038632B (en) | 1958-09-11 |
| DE1041568B (en) | 1958-10-23 |
| FR1198484A (en) | 1959-12-08 |
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