GB656963A - Improvements in and relating to means for protecting static rectifiers - Google Patents
Improvements in and relating to means for protecting static rectifiersInfo
- Publication number
- GB656963A GB656963A GB140249A GB140249A GB656963A GB 656963 A GB656963 A GB 656963A GB 140249 A GB140249 A GB 140249A GB 140249 A GB140249 A GB 140249A GB 656963 A GB656963 A GB 656963A
- Authority
- GB
- United Kingdom
- Prior art keywords
- currents
- secondaries
- breaker
- circuit
- 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.)
- 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
- H02H7/10—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 converters; for rectifiers
- H02H7/12—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 converters; for rectifiers for static converters or rectifiers
- H02H7/125—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 converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—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 converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
656,963. Protective cut-out arrangements. BRITISH. THOMSON - HOUSTON CO., Ltd., and PAYNE, K. J. Jan. 18, 1949, No. 1402. [Class 38(v)] A rectifier bridge D fed from a threephase alternator A over a circuit-breaker B is protected against breakdown due to excessive reverse currents caused by overvoltages by the connection of a current transformer E1-E6 in each arm of the bridge. The transformer secondaries are connected together in parallel over rectifiers F1-F6 arranged so as to block secondary currents due to forward (normal) primary currents and to pass secondary currents due to reverse primary currents. A sensitive relay G connected in parallel to the secondaries is shunted by a smoothing condenser H. On an excessive reverse current, the relay G is energized to close the circuit of a trip coil C of the breaker B which thus opens. A rectifier is connected across each of the secondaries so as to prevent open-circuiting thereof on forward currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB140249A GB656963A (en) | 1949-01-18 | 1949-01-18 | Improvements in and relating to means for protecting static rectifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB140249A GB656963A (en) | 1949-01-18 | 1949-01-18 | Improvements in and relating to means for protecting static rectifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB656963A true GB656963A (en) | 1951-09-05 |
Family
ID=9721377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB140249A Expired GB656963A (en) | 1949-01-18 | 1949-01-18 | Improvements in and relating to means for protecting static rectifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB656963A (en) |
-
1949
- 1949-01-18 GB GB140249A patent/GB656963A/en not_active Expired
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