GB760608A - Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systems - Google Patents
Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systemsInfo
- Publication number
- GB760608A GB760608A GB395154A GB395154A GB760608A GB 760608 A GB760608 A GB 760608A GB 395154 A GB395154 A GB 395154A GB 395154 A GB395154 A GB 395154A GB 760608 A GB760608 A GB 760608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- secondary winding
- transformer
- network
- series
- 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 7
- 239000004020 conductor Substances 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000011664 signaling Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/007—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current with galvanic isolation between controlling and controlled circuit, e.g. transformer relay
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/10—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using current passing between devices along the route and devices on the vehicle or train
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
760,608. Railway signalling systems. PINTSCH BAMAG AKT.-GES. Feb. 10, 1954, No. 3951/54. Class 105. [Also in Group XXXV] In an arrangement for controlling a relay e in dependence on the state of an "on-off" switching element a connected in series with the input terminals of a " passive " network across a high - voltage D.C. supply, the operating coil of the relay is connected to the output terminals of the network which includes at least one reactive impedance and is such that a change in state of the element results in at least a temporary change in the state of the relay and that any direct current path from the supply to the relay is of such high resistance that it does not by itself carry sufficient current to operate the relay. In Fig. 1 the network is constituted by a transformer b, d, the charging current of which when the switch a is closed, produces a current pulse in the secondary winding d to operate the relay e. Alternatively or additionally the relay e may be arranged to respond to the voltage produced in the transformer secondary winding by the A.C. component, e.g. commutator ripple, of the supply. The flow of steady direct current through the primary winding b after the switch a has been closed may be reduced by providing a capacitor with parallel and series connected resistors in series with the primary winding b, Fig. 2 (not shown), and the resulting circuit may be tuned to the ripple frequency. The output of the secondary winding may be rectified and used to charge a capacitor to which the relay is connected, Fig. 4 (not shown). In a further arrangement, Fig. 5 (not shown), the coil of the relay is connected in series with the secondary winding d and an opposing secondary winding of a further normally energized transformer, the relay e being de-energized when the switch a is closed. Figs. 6 and 7 (not shown) illustrate the use of tapped impedances in place of the transformer. The switching element a may comprise the pantograph of an electric train which cooperates with an overhead current-carrying conductor and a parallel short length of conductor connected to the " passive " network. Alternatively, the element may comprise collector shoes and a conductor rail.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB395154A GB760608A (en) | 1954-02-10 | 1954-02-10 | Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systems |
| FR1104786D FR1104786A (en) | 1954-02-10 | 1954-02-26 | Device for switching on and off on direct current networks, preferably high voltage networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB395154A GB760608A (en) | 1954-02-10 | 1954-02-10 | Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB760608A true GB760608A (en) | 1956-11-07 |
Family
ID=9767954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB395154A Expired GB760608A (en) | 1954-02-10 | 1954-02-10 | Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1104786A (en) |
| GB (1) | GB760608A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2994073A (en) * | 1958-02-05 | 1961-07-25 | Pelovitz Milton | Fault annunciator |
-
1954
- 1954-02-10 GB GB395154A patent/GB760608A/en not_active Expired
- 1954-02-26 FR FR1104786D patent/FR1104786A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1104786A (en) | 1955-11-24 |
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