GB824172A - Improvements in and relating to electric rectifier arrangements - Google Patents
Improvements in and relating to electric rectifier arrangementsInfo
- Publication number
- GB824172A GB824172A GB3712355A GB3712355A GB824172A GB 824172 A GB824172 A GB 824172A GB 3712355 A GB3712355 A GB 3712355A GB 3712355 A GB3712355 A GB 3712355A GB 824172 A GB824172 A GB 824172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impedances
- star points
- star
- relay
- rectifiers
- 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
- H02H7/1203—Circuits independent of the type of conversion
- H02H7/1206—Circuits independent of the type of conversion specially adapted to conversion cells composed of a plurality of parallel or serial connected elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
824,172. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO. Ltd. March 26, 1957 [Dec. 28, 1955], No. 37123/55. Class 38 (5). In a rectifying equipment having a number of parallel circuits 4, 5, means for detecting an open-circuit, e.g. due to a blown fuse 2, comprise relay means 11, 13 connected between star points 8, 12 provided by impedances 7, 7a and a further point normally at the same potential as the star points. The further point may be the neutral connection of a supply transformer or be provided by further impedances star-connected to the supply bus-bars. The relay means may comprise individual relays as shown, but a common relay may be connected to two or more star points through half-wave rectifiers, Fig. 2 (not shown). In the latter case, small neon or similar discharge lamps may be connected in parallel with the half-wave rectifiers to indicate the defective circuit, or a switching arrangement may be provided to connect the common relay to the individual star points for testing purposes. Fig. 3 (not shown), illustrates the application of the invention to groups of three-phase bridgeconnected semi-conductor rectifiers. The impedances may comprise high resistances or small capacitances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3712355A GB824172A (en) | 1955-12-28 | 1955-12-28 | Improvements in and relating to electric rectifier arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3712355A GB824172A (en) | 1955-12-28 | 1955-12-28 | Improvements in and relating to electric rectifier arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB824172A true GB824172A (en) | 1959-11-25 |
Family
ID=10393914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3712355A Expired GB824172A (en) | 1955-12-28 | 1955-12-28 | Improvements in and relating to electric rectifier arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB824172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414265A1 (en) * | 1978-01-04 | 1979-08-03 | Bbc Brown Boveri & Cie | MONITORING DEVICE FOR SEMICONDUCTOR RECTIFIERS OF A THREE-PHASE BRIDGE MOUNTING |
-
1955
- 1955-12-28 GB GB3712355A patent/GB824172A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414265A1 (en) * | 1978-01-04 | 1979-08-03 | Bbc Brown Boveri & Cie | MONITORING DEVICE FOR SEMICONDUCTOR RECTIFIERS OF A THREE-PHASE BRIDGE MOUNTING |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2554598A (en) | Safety system for portable electrical apparatus | |
| US3287603A (en) | Ground fault protective circuitry | |
| GB824172A (en) | Improvements in and relating to electric rectifier arrangements | |
| GB1475810A (en) | Testing an electrical supply installation | |
| GB565324A (en) | Improvements in or relating to the automatic protection of electric impedance networks | |
| US3696291A (en) | Equipment for detecting improper wiring in portable installation | |
| GB955400A (en) | Improvements in or relating to fault indicating arrangements for electric current rectifier circuits | |
| US2250928A (en) | Signaling system | |
| GB794106A (en) | Improvements in earth leakage protective devices | |
| GB848444A (en) | Improvements in and relating to electrical protective apparatus for rectifier installations | |
| GB938571A (en) | Fault indicator for an alternating current system | |
| GB556014A (en) | Improvements in and relating to protective systems for alternating current circuits and apparatus therefor | |
| GB1210152A (en) | Hybrid unit | |
| GB902999A (en) | Improvements in and relating to three-phase symmetrical component analysers and their application in electrical protective relay systems | |
| GB863128A (en) | Improvements in or relating to fault indicating arrangements for electric circuits | |
| GB234153A (en) | Improvements in or relating to protecting electric circuits and alternating current machines, from material disturbance of equilibrium of phase and excessive strength of current | |
| GB549500A (en) | Improvements in electric protective arrangements of the earth leakage type | |
| GB540973A (en) | Improvements in or relating to electric protective systems | |
| GB521443A (en) | Improvements in and relating to electric protective arrangements for constant current systems | |
| GB535446A (en) | Improvements in and relating to earth leakage protective systems | |
| GB617417A (en) | A thermionic relay for the protection of electrical circuits | |
| GB881869A (en) | Improvements in or relating to direct current power sources employing rectifying systems | |
| GB507566A (en) | Improvements in remote electric control systems | |
| GB230725A (en) | Protective devices for alternating current systems | |
| GB549376A (en) | Improvements relating to cut-out arrangements for polyphase electrical circuits |