GB648790A - Improvements in electrical remote control systems - Google Patents
Improvements in electrical remote control systemsInfo
- Publication number
- GB648790A GB648790A GB3031/48A GB303148A GB648790A GB 648790 A GB648790 A GB 648790A GB 3031/48 A GB3031/48 A GB 3031/48A GB 303148 A GB303148 A GB 303148A GB 648790 A GB648790 A GB 648790A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- relay
- heater
- seconds
- auxiliary
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
- H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/366—Aluminium nitride
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Resistance Heating (AREA)
- Keying Circuit Devices (AREA)
Abstract
648,790. Electric control systems. ROSS, T. W., SMITH, R. M. A., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 2, 1948, No. 3031. [Class 40 (i)] A switching device responsive only to electric signals of a predetermined duration comprises a main stable two-position thermal relay 12 including heater elements 14, 15 for closing and opening, respectively, contacts 16, 17 for connecting a load across lines L1, L2 and an auxiliary thermal self-resetting relay 13 having a heater element 18, adapted to be energized with one or other of the windings 14, 15 over switch 10 in response to a signal, and including a movable contact 19 which short circuits one or other of the heater elements 14, 15 according to its position whereby a signal of predetermined duration causes the auxiliary relay to operate during the first part of the signal to condition the main relay 12 for operation in one direction during a later part of the signal, whereas a signal of predetermined shorter duration operates the main relay in the opposite direction before the auxiliary relay responds to the signal. The signals used are ripple currents of predetermined frequency sent over the power lines L1, L2 to actuate a resonance relay 1, e.g. as described in Specification 517,971, [Group XXXVII], and connected to line through a series resonant circuit 6, 7. The switch 10 is of the quick action hot wire type and is closed by the resonance relay 1 intermittently removing the short circuit from the heater coil 8. As shown, the auxiliary relay 13 short circuits the heater winding 14 of the main relay so that when switch 10 closes in response to the first impulse, the relay windings 18, 15 only are energized. The heating of winding 15 has no effect since the main switch 16, 17 is open, but after a delay of, say 35 seconds, the auxiliary relay 13 operates to short circuit heater 15 and remove the short circuit from heater 14. Provided the ripple signal continues for a further predetermined period, say 30 seconds the heater 14 operates to close the main switch. The auxiliary relay reverts to normal when the ripple signal ceases. To open the main switch a further ripple signal is sent, the heater 15 is energized as before, and, after an interval of, say 30 seconds, opens the main switch. The ripple signal is stopped simultaneously, i.e. before the auxiliary relay has operated. In a modification, Fig. 2, the auxiliary relay 13 is also of the two-position stable type having two heaters 18, 22 and the moving contact 16 of the main switch 16, 17 also determines which of the auxiliary heater coils is energized by an incoming signal. As shown, heater 14 is short-circuited and the closure of switch 10 energizes auxiliary winding 18 which after a time of, say 30 seconds, changes over contact 19 whereupon heater 14 energizes and, after say, a further 30 seconds, closes the main switch to energize the load. A subsequent signal will energize coil 22 which after a delay of, say 30 seconds, moves the contact 19 back to the position shown to remove the short circuit from heater coil 15 which will open the main switch if the signal persists for say a further 30 seconds. If the signal persists only long enough to operate the auxiliary relay a third signal of 30 seconds duration may be sent subsequently to open the main switch. Specifications 574,372, [Group XXXVII], and 648,789 also are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3031/48A GB648790A (en) | 1948-02-02 | 1948-02-02 | Improvements in electrical remote control systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3031/48A GB648790A (en) | 1948-02-02 | 1948-02-02 | Improvements in electrical remote control systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB648790A true GB648790A (en) | 1951-01-10 |
Family
ID=9750652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3031/48A Expired GB648790A (en) | 1948-02-02 | 1948-02-02 | Improvements in electrical remote control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB648790A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014020262A1 (en) * | 2012-08-02 | 2014-02-06 | Snecma | Power supply circuit |
-
1948
- 1948-02-02 GB GB3031/48A patent/GB648790A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014020262A1 (en) * | 2012-08-02 | 2014-02-06 | Snecma | Power supply circuit |
FR2994350A1 (en) * | 2012-08-02 | 2014-02-07 | Snecma | POWER CIRCUIT |
GB2519032A (en) * | 2012-08-02 | 2015-04-08 | Snecma | Power supply circuit |
US9887058B2 (en) | 2012-08-02 | 2018-02-06 | Snecma | Power supply circuit |
GB2519032B (en) * | 2012-08-02 | 2019-12-18 | Snecma | A power supply circuit |
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