GB734573A - Improvements in and relating to railway track circuiting systems - Google Patents
Improvements in and relating to railway track circuiting systemsInfo
- Publication number
- GB734573A GB734573A GB721351A GB721351A GB734573A GB 734573 A GB734573 A GB 734573A GB 721351 A GB721351 A GB 721351A GB 721351 A GB721351 A GB 721351A GB 734573 A GB734573 A GB 734573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- track
- transformer
- march
- track 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
- 238000004804 winding Methods 0.000 abstract 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
- B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
- B61L23/16—Track circuits specially adapted for section blocking
- B61L23/166—Track circuits specially adapted for section blocking using alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
734,573. Track relay circuits. SIEMENS & GENERAL ELECTRIC RAILWAY SIGNAL CO., Ltd., and CANDLER, J. E. March 28, 1952 [March 28, 1951], No. 7213/51. Drawings to Specification. Class 105. In a track relay circuit the relay is fed from the secondary windings of a saturable core transformer, the primary of which is connected between the track rails and the normal no-load magnetizing current of the transformer is in the saturation range and of the same order of magnitude as the current leak through the ballast between the rails which will occur during normal weather conditions, whereby the secondary voltage of the transformer applied to the track relay winding, is rendered reasonably independent of variation of the ballast resistance. The track relay may be an A.C. relay or a rectifier fed D.C. relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB721351A GB734573A (en) | 1951-03-28 | 1951-03-28 | Improvements in and relating to railway track circuiting systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB721351A GB734573A (en) | 1951-03-28 | 1951-03-28 | Improvements in and relating to railway track circuiting systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB734573A true GB734573A (en) | 1955-08-03 |
Family
ID=9828797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB721351A Expired GB734573A (en) | 1951-03-28 | 1951-03-28 | Improvements in and relating to railway track circuiting systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB734573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985752A (en) * | 1959-01-05 | 1961-05-23 | Fines Fred | Railroad track circuit |
| US3011050A (en) * | 1959-10-28 | 1961-11-28 | Westinghouse Air Brake Co | Sensitive shunting circuits |
-
1951
- 1951-03-28 GB GB721351A patent/GB734573A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985752A (en) * | 1959-01-05 | 1961-05-23 | Fines Fred | Railroad track circuit |
| US3011050A (en) * | 1959-10-28 | 1961-11-28 | Westinghouse Air Brake Co | Sensitive shunting circuits |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8601627A1 (en) | Current-limit circuit in x-ray generator. | |
| GB734573A (en) | Improvements in and relating to railway track circuiting systems | |
| GB313208A (en) | Improvements in or relating to electrical indicating and/or recording apparatus | |
| GB1254788A (en) | Improvements in or relating to devices for indicating the condition of a switch | |
| US1878764A (en) | Electrical translating apparatus | |
| FR2321208A1 (en) | Detection of leakage current to earth - uses differential current transformer whose core is saturated by leakage current | |
| US2061747A (en) | Railway track circuit apparatus | |
| GB1309986A (en) | Location of faults in cables | |
| GB929050A (en) | Railway track circuits | |
| GB823045A (en) | Improvements relating to direct current track circuits for railway signalling systems | |
| US3046390A (en) | Railway track circuit apparatus | |
| SU1544620A1 (en) | Adaptive track circuit | |
| GB648445A (en) | Improvements in electrical protective systems | |
| GB738300A (en) | Improvements relating to rectifier equipments and to interphase transformers therefor | |
| GB744874A (en) | Improvements relating to direct current track circuits for railway signalling systems | |
| GB1030524A (en) | Improvements relating to railway track circuit apparatus | |
| GB161207A (en) | Improvements in or relating to railway signalling systems and apparatus | |
| GB1044621A (en) | Improvements in and relating to inductive reactance devices | |
| GB489772A (en) | Improvements in electrical signalling systems | |
| GB874267A (en) | Improvements relating to electric supply circuits incorporating on-load tap-changingapparatus | |
| GB431898A (en) | Improvements relating to apparatus for the automatic regulation of rectifiers | |
| JPS5821877U (en) | Test power cutoff device | |
| GB790699A (en) | Improvements in protection apparatus for operating electric circuits with a variabletime lag | |
| JPS6079721U (en) | stationary induction equipment | |
| GB291014A (en) | Improvements relating to high frequency signal amplification systems |