GB585660A - Improvements in electric supply systems having means for absorbing regenerated power - Google Patents
Improvements in electric supply systems having means for absorbing regenerated powerInfo
- Publication number
- GB585660A GB585660A GB177843A GB177843A GB585660A GB 585660 A GB585660 A GB 585660A GB 177843 A GB177843 A GB 177843A GB 177843 A GB177843 A GB 177843A GB 585660 A GB585660 A GB 585660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- relay
- bus
- bars
- coils
- 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
- H02H7/1209—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 converters using only discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
585,660. Protective cut-out arrangements. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. Feb. 3, 1943, No. 1778. [Class 38 (v)] A protective arrangement for absorbing regenerated power comprises a resistance 8 arranged to be connected across bus-bars 3, 4, so as to absorb power regenerated therein, voltage-responsive coils L1W, L2W operated when the voltage across the bus-bars exceeds a predetermined value so as to insert the resistance, a time-delay relay TS for disconnecting the resistance after a predetermined time, and a forward-current-operated relay PR for disconnecting the resistance when forward-current flows in the bus-bars, the relays TS and PR operating independently of one another. Upon overvoltage, the coils L1W, L2W, are energized through a normally-closed contact lb1 and a regulating resistance 9, thereby closing contacts l1, l2, l12, 122, L1 and L2, and putting resistance 8 in circuit. The relay TS is energized and after a time-delay, contact ts1 opens, thereby deenergizing coils L1W, L2W. Meanwhile, relay PR is de-energized by the reverse-current in the bus-bars 3, 4, to close contact pr1 and energize coil LA. Contacts la1, la2 close and energize coil LB, opening contact lb1 and closing lb2. When forward-current in the bus-bars 3, 4 is restored, relay PR is energized, opening contact pr1 and de-energizing coil LA to open contacts la1, la2, thereby de-energizing coils L1W, L2W, if this has not already been done by the timedelay relay TS. Coils TRS, TRP, are respectively connected in series and parallel with the resistance 8 and operate an indicator contact tr1 should the resistance be overheated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB177843A GB585660A (en) | 1943-02-03 | 1943-02-03 | Improvements in electric supply systems having means for absorbing regenerated power |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB177843A GB585660A (en) | 1943-02-03 | 1943-02-03 | Improvements in electric supply systems having means for absorbing regenerated power |
Publications (1)
Publication Number | Publication Date |
---|---|
GB585660A true GB585660A (en) | 1947-02-18 |
Family
ID=9727817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB177843A Expired GB585660A (en) | 1943-02-03 | 1943-02-03 | Improvements in electric supply systems having means for absorbing regenerated power |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB585660A (en) |
-
1943
- 1943-02-03 GB GB177843A patent/GB585660A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB585660A (en) | Improvements in electric supply systems having means for absorbing regenerated power | |
GB678140A (en) | Improvements in or relating to electromagnetic relay protective arrangements | |
GB599853A (en) | Device for the protection of electric batteries against excessive discharge | |
US2028734A (en) | Train lighting system | |
GB449424A (en) | Improvements relating to rotary transformers for direct electric current and to apparatus for use therewith | |
GB603521A (en) | Improvements relating to indicator actuating means for use in dynamo-battery systems | |
GB1259884A (en) | Monitoring device for three-phase alternating current generators | |
GB687351A (en) | Improvements in voltage regulators for electric generators | |
GB588068A (en) | Improvements relating to protective apparatus for poly-phase electricity distributing systems | |
GB790699A (en) | Improvements in protection apparatus for operating electric circuits with a variabletime lag | |
GB745845A (en) | Improvements in or relating to protective arrangements for electric motor control systems | |
GB1471050A (en) | Electric vehicle battery recharging circuit | |
GB738081A (en) | Improvements relating to electric battery charging circuits | |
GB540973A (en) | Improvements in or relating to electric protective systems | |
GB872463A (en) | Improvements in or relating to power supply equipment | |
GB1048003A (en) | Improvements relating to electrical control units for electrical heating elements | |
GB560363A (en) | Improvements relating to load equalizing in electrical power systems | |
GB806998A (en) | Regulator set for electric generators on motor vehicles | |
GB740411A (en) | Improvements in or relating to electric protective and control apparatus | |
GB701303A (en) | Improvements in and relating to apparatus or devices for starting and protecting electric motors | |
GB793278A (en) | Improved system for controlling parallel circuits supplying a common load | |
GB727320A (en) | Improvements relating to electric control systems | |
GB624043A (en) | Improvements relating to regulators for battery-charging dynamos | |
GB656997A (en) | Improvements in or relating to electric protective systems | |
GB882300A (en) | Improvements in or relating to control circuits for electric relays |