GB1023906A - A safety device for high frequency alternator plants - Google Patents
A safety device for high frequency alternator plantsInfo
- Publication number
- GB1023906A GB1023906A GB41977/64A GB4197764A GB1023906A GB 1023906 A GB1023906 A GB 1023906A GB 41977/64 A GB41977/64 A GB 41977/64A GB 4197764 A GB4197764 A GB 4197764A GB 1023906 A GB1023906 A GB 1023906A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- contactor
- contacts
- overload
- contactors
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
- H02H7/062—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors for parallel connected generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
1,023,906. Protective systems; supply systems for induction heating. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC). Oct. 14, 1964 [Oct. 15, 1963], No. 41977/64. Headings H2H and H2K. A protective arrangement for a system, e.g. an induction heating system, having high-frequency alternators A 1 , A 2 connected in parallel to bus-bars B and a plurality of output lines, as X, comprises a contactor D 1' D 2 or Dx for each of the input and output lines, each contactor having a coil normally energized by a first voltage source Rd 1 or Rd 4 through a unidirectionally conducting device d 1 , d 2 or dx. A current transformer Ti 1 , Ti 2 or Tix in each line is connected to an electronic overload relay R 1 , R 2 or Rx which normally maintains a time delay relay F 1 , F 2 or Fx energized (with its contacts closed) and blocks a switching device, e.g. thyratron, T 1' T 2 or Tx. Should an overload occur, e.g. air line X, the relay Rx operates to de-energize the time delay relay Fx and to unblock the device Tx. Current now flows from a second higher voltage source Rd 3 through an impedance Z, the device Tx and contacts fx 1 of the delay relay Fx to maintain the coil Dx energized. The resulting voltage drop across the impedance Z blocks the rectifiers of the sources Rd 1 and Rd 2 so that the coils of contactors D 1 , D 2 are deenergized and the field windings of the alternators A 1 , A 2 cease to be excited. This causes the removal of the overload current so that when the delay relay Fx opens its contacts fx 1 and fx 2 the contactor Dx opens without excessive arcing. The opening of these contacts interrupts the supply from source Rd 3 through the impedance Z, so that the sources Rd 1 and Rd 2 again supply the contactors D 1 , D 2 and the alternator field windings, the system reverting to normal except that the line X remains disconnected as the relay Fx is not self-resetting. Fig. 2 (not shown) illustrates a modified arrangement which may be provided with an auxiliary circuit to prevent reclosure of the contactors and the restoration of the field excitation should the contactor in the overload output line fail to open.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE638695A BE638695A (en) | 1963-10-15 | 1963-10-15 | Protection device of a high-frequency generator plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1023906A true GB1023906A (en) | 1966-03-30 |
Family
ID=3839712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41977/64A Expired GB1023906A (en) | 1963-10-15 | 1964-10-14 | A safety device for high frequency alternator plants |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE638695A (en) |
| DE (1) | DE1251415B (en) |
| FR (1) | FR1415826A (en) |
| GB (1) | GB1023906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108367681A (en) * | 2015-12-18 | 2018-08-03 | 裕罗有限公司 | The automatic reclosing device and method of electric vehicle charging thread control device |
-
1963
- 1963-10-15 BE BE638695A patent/BE638695A/en unknown
-
1964
- 1964-09-30 FR FR989790A patent/FR1415826A/en not_active Expired
- 1964-10-01 DE DE1964A0047225 patent/DE1251415B/en active Pending
- 1964-10-14 GB GB41977/64A patent/GB1023906A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108367681A (en) * | 2015-12-18 | 2018-08-03 | 裕罗有限公司 | The automatic reclosing device and method of electric vehicle charging thread control device |
| CN108367681B (en) * | 2015-12-18 | 2022-09-06 | 裕罗有限公司 | Automatic overlapping device and method for charging line control device of electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1415826A (en) | 1965-10-29 |
| DE1251415B (en) | 1967-10-05 |
| BE638695A (en) | 1964-04-15 |
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