GB1143889A - - Google Patents
Info
- Publication number
- GB1143889A GB1143889A GB1143889DA GB1143889A GB 1143889 A GB1143889 A GB 1143889A GB 1143889D A GB1143889D A GB 1143889DA GB 1143889 A GB1143889 A GB 1143889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- trigger circuit
- latch
- vacuum
- relay
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- 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
-
- 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
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
Abstract
1,143,889. Vacuum switches; arcing preventing in switches. GENERAL ELECTRIC CO. 6 Dec., 1967 [12 Jan., 1967], No. 55532/67. Heading H1N. [Also in Division H2] A pair of vacuum switches 12, 14 are connected in parallel and operated at the same time by a spring 25 when released by a latch 26, means being provided to prevent release of the latch during the period immediately preceding current zero so that even if the contacts do not separate simultaneously they nevertheless cannot separate on opposite sides of the current zero. The latch 26 is released by a solenoid energized through a controlled rectifier 32; the S.C.R. 32 is connected to a trigger circuit 40 by an overload relay 53. The trigger circuit 40 provides pulses at a fixed point on each A.C. cycle before the peak so that when the relay contacts 54 are closed the S.C.R. is triggered by the next pulse. Inductances (60) (Fig. 1, not shown) are placed in series with each switch 12, 14 to assist current division. In Fig. 3, these inductances are the primary windings 90 of a core balance transformer 75. If due to faulty operation the currents through the two switches are unequal, a relay 93 operates after a delay to actuate an hydraulic reclosing device 70; a further contact 82 prevents reclosing until the vacuum switch contacts reach their fully open position. After several faulty operations a counter 85 disconnects the trigger circuit 40 and the switches remain closed. In a modification (Fig. 4, not shown), the transformer 75 is replaced by two overload relays responsive to the two currents. The two vacuum switches may have a common envelope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60889967A | 1967-01-12 | 1967-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1143889A true GB1143889A (en) |
Family
ID=24438530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1143889D Active GB1143889A (en) | 1967-01-12 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3441800A (en) |
| JP (1) | JPS4535700B1 (en) |
| DE (1) | DE1640277B2 (en) |
| FR (1) | FR1566251A (en) |
| GB (1) | GB1143889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2700375A1 (en) * | 1976-01-08 | 1977-07-21 | Tokyo Shibaura Electric Co | DEVICE FOR INTERRUPTING A DC CIRCUIT |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE343717B (en) * | 1968-04-01 | 1972-03-13 | Asea Ab | |
| US3970809A (en) * | 1975-02-10 | 1976-07-20 | General Electric Company | Electric circuit breaker comprising parallel-connected vacuum interrupters |
| US3970810A (en) * | 1975-03-06 | 1976-07-20 | General Electric Company | Electric circuit breaker comprising parallel-connected vacuum interrupters |
| US4000445A (en) * | 1975-12-05 | 1976-12-28 | General Electric Company | Trip circuit for an electric circuit breaker |
| DE3705719A1 (en) * | 1987-02-23 | 1988-09-01 | Bbc Brown Boveri & Cie | Heavy-current switch |
| DE3833166A1 (en) * | 1988-09-27 | 1990-03-29 | Siemens Ag | Method for operating a power switch |
| CN101536131B (en) * | 2006-08-21 | 2013-03-27 | 阿科林有限公司 | Medium-voltage circuit-breaker |
| JP4568765B2 (en) * | 2008-01-07 | 2010-10-27 | 株式会社日立製作所 | Vacuum switchgear |
| JP5097934B2 (en) * | 2008-04-02 | 2012-12-12 | 明電Ｔ＆Ｄ株式会社 | Large capacity vacuum circuit breaker |
| JP2016110843A (en) | 2014-12-05 | 2016-06-20 | オムロン株式会社 | Electromagnetic relay |
| JP6414453B2 (en) | 2014-12-05 | 2018-10-31 | オムロン株式会社 | Electromagnetic relay |
| CN107077996B (en) * | 2014-12-05 | 2019-03-29 | 欧姆龙株式会社 | Electromagnetic relay |
| US10134551B2 (en) * | 2016-09-21 | 2018-11-20 | Astronics Advanced Electronic Systems Corp. | Galvanically isolated hybrid contactor |
| EP3336868B1 (en) * | 2016-12-15 | 2023-05-17 | General Electric Technology GmbH | Switching apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH390347A (en) * | 1962-02-14 | 1965-04-15 | Bbc Brown Boveri & Cie | Switching device for interrupting alternating currents |
| US3237030A (en) * | 1962-09-28 | 1966-02-22 | Dynamics Controls Corp | Radio noise-free switch |
| US3265933A (en) * | 1963-10-24 | 1966-08-09 | Allis Chalmers Mfg Co | Control circuit for operating circuit interrupter at a zero current point in system wave form |
| US3390305A (en) * | 1965-12-14 | 1968-06-25 | Gen Electric | Circuit interrupting means for a high voltage d-c circuit |
-
0
- GB GB1143889D patent/GB1143889A/en active Active
-
1967
- 1967-01-12 US US608899A patent/US3441800A/en not_active Expired - Lifetime
- 1967-12-28 JP JP8462667A patent/JPS4535700B1/ja active Pending
-
1968
- 1968-01-10 DE DE1968G0052109 patent/DE1640277B2/en active Granted
- 1968-01-12 FR FR1566251D patent/FR1566251A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2700375A1 (en) * | 1976-01-08 | 1977-07-21 | Tokyo Shibaura Electric Co | DEVICE FOR INTERRUPTING A DC CIRCUIT |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1640277B2 (en) | 1976-07-29 |
| US3441800A (en) | 1969-04-29 |
| JPS4535700B1 (en) | 1970-11-14 |
| DE1640277A1 (en) | 1971-02-04 |
| FR1566251A (en) | 1969-05-09 |
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