GB848444A - Improvements in and relating to electrical protective apparatus for rectifier installations - Google Patents
Improvements in and relating to electrical protective apparatus for rectifier installationsInfo
- Publication number
- GB848444A GB848444A GB960556A GB960556A GB848444A GB 848444 A GB848444 A GB 848444A GB 960556 A GB960556 A GB 960556A GB 960556 A GB960556 A GB 960556A GB 848444 A GB848444 A GB 848444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- earth
- bus
- rectifier
- circuit
- test
- 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
- H02H7/1255—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 internal faults, e.g. by monitoring ripple in output voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
848,444. Protective cut-out arrangements. ENGLISH ELECTRIC CO. Ltd. March 27, 1957 [March 27, 1956], No. 9605/56. Class 38 (5). [Also in Group XXXV] A rectifier protective arrangement includes circuit elements forming a current path preferentially responsive to A.C. potentials of supply frequency between a point at earth potential and a point connected with a D.C. output terminal of the rectifier installation. The rectifier 15 may be a mechanical or contact rectifier and may supply an electro-chemical plant 10 through bus-bars 11, 12. The current path includes an inductor 22 and a capacitor 23 forming a series-resonant circuit in series with a bridge rectifier 25 which supplies a low-set alarm relay 26 and a higher-set circuit-breaker tripping relay 27. This protective arrangement may be tested by a test-circuit which includes an A.C. supply source 33, a test switch 38, a capacitor 34 and an inductor 35. One such protective and test arrangement is connected between the positive bus-bar 11 and an earth bus-bar 24 and another such arrangement is connected between the negative and earth bus-bars so that the existance of an A.C. potential supply frequency to earth on either the negative or positive busbar causes an alarm to be given and the circuitbreaker 16 to be tripped if the A.C. potential is of sufficient magnitude. The provision of an ammeter 39 and a voltmeter 40 enables the leakage resistance to earth to be calculated when the test circuit is used, the test circuit applying an A.C. potential between the appropriate supply bus-bar and the earth bus-bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB960556A GB848444A (en) | 1956-03-27 | 1956-03-27 | Improvements in and relating to electrical protective apparatus for rectifier installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB960556A GB848444A (en) | 1956-03-27 | 1956-03-27 | Improvements in and relating to electrical protective apparatus for rectifier installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB848444A true GB848444A (en) | 1960-09-14 |
Family
ID=9875201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB960556A Expired GB848444A (en) | 1956-03-27 | 1956-03-27 | Improvements in and relating to electrical protective apparatus for rectifier installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB848444A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072926U (en) * | 1973-11-07 | 1975-06-26 | ||
| CN106154161A (en) * | 2016-08-18 | 2016-11-23 | 广州维通轨道交通装备有限公司 | Traction electric machine no-load test equipment |
| CN113030613A (en) * | 2021-03-01 | 2021-06-25 | 西安西电电力***有限公司 | Direct-current transformer complete machine test system and method |
-
1956
- 1956-03-27 GB GB960556A patent/GB848444A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072926U (en) * | 1973-11-07 | 1975-06-26 | ||
| CN106154161A (en) * | 2016-08-18 | 2016-11-23 | 广州维通轨道交通装备有限公司 | Traction electric machine no-load test equipment |
| CN113030613A (en) * | 2021-03-01 | 2021-06-25 | 西安西电电力***有限公司 | Direct-current transformer complete machine test system and method |
| CN113030613B (en) * | 2021-03-01 | 2022-09-20 | 西安西电电力***有限公司 | Direct-current transformer complete machine test system and method |
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