GB617668A - Improvements in direct current electric supply systems having means for absorbing regenerated power - Google Patents
Improvements in direct current electric supply systems having means for absorbing regenerated powerInfo
- Publication number
- GB617668A GB617668A GB3055846A GB3055846A GB617668A GB 617668 A GB617668 A GB 617668A GB 3055846 A GB3055846 A GB 3055846A GB 3055846 A GB3055846 A GB 3055846A GB 617668 A GB617668 A GB 617668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- coil
- rectifier
- close
- contactor
- 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/066—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode particular circuits having a special characteristic
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/18—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to reversal of direct current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Relay Circuits (AREA)
Abstract
617,668. Protective cut - out systems. GENERAL ELECTRIC CO., Ltd., and SCHIFF, W. Oct. 14, 1946, No. 30558. [Class 38 (v)] A protective arrangement to absorb regenerated power when a traction load 3 is connected to a mercury arc rectifier 1, has a polarized relay with coil 6 and contacts PR1, PR2. When the current taken by the traction load falls to a low value, contacts PR1 close to trigger a grid-controlled vapour discharge device 8 to connect a transition resistance 4. When the traction load commences to regenerate, the-contacts PR2 close to trigger a further vapour discharge device 19, which then applies a potential to the starting electrode 15 of a mercury arc rectifier 14. The rectifier commences to discharge and connects a resistance 5 to the bus-bars to absorb the regenerated power. As the contacts PR2 close, a reversecurrent relay 7 opens contacts RCR1 in an auxiliary circuit containing the operating coil 25 of a contactor 24. Normally-open contacts 29 in this auxiliary circuit are closed by a coil 30 when the rectifier 14 discharges. When the load ceases to regenerate, the contacts RCR1 close, coil 25 is energized, and the contactor 24 closes to short out the rectifier to interrupt its discharge. After a time delay a further set of contacts 28 in the auxiliary circuit open to de-energize coil 25 so that the contactor 24 opens and disconnects the resistance 5. In the meantime contacts PR2 will have opened, and contacts PR1 open when the forward current is sufficient. Suitable means may be provided to interrupt the discharges in the vapour discharge devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3055846A GB617668A (en) | 1946-10-14 | 1946-10-14 | Improvements in direct current electric supply systems having means for absorbing regenerated power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3055846A GB617668A (en) | 1946-10-14 | 1946-10-14 | Improvements in direct current electric supply systems having means for absorbing regenerated power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB617668A true GB617668A (en) | 1949-02-09 |
Family
ID=10309527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3055846A Expired GB617668A (en) | 1946-10-14 | 1946-10-14 | Improvements in direct current electric supply systems having means for absorbing regenerated power |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB617668A (en) |
-
1946
- 1946-10-14 GB GB3055846A patent/GB617668A/en not_active Expired
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