GB676243A - Improvements in or relating to automatic safety devices for electrical power supplies - Google Patents
Improvements in or relating to automatic safety devices for electrical power suppliesInfo
- Publication number
- GB676243A GB676243A GB3056049A GB3056049A GB676243A GB 676243 A GB676243 A GB 676243A GB 3056049 A GB3056049 A GB 3056049A GB 3056049 A GB3056049 A GB 3056049A GB 676243 A GB676243 A GB 676243A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- relating
- electrical power
- power supplies
- safety devices
- 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
- 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
- H02H3/24—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 undervoltage or no-voltage
Landscapes
- Protection Of Static Devices (AREA)
Abstract
676,243. Protective arrangements. STANDARD TELEPHONES & CABLES, Ltd., WHESSOE, Ltd., and FRANCOMBE, K. W. Nov. 28, 1950 [Nov. 29, 1949], No. 30560/49. Class 38 (iv). The output terminals 4 of apparatus, say a rectifier 1, feeding a high-tension load 5, such as an electrostatic precipitator, are automatically earthed or short-circuited by contacts 12 of a relay 3 upon failure of, or removal of, power supply to the apparatus 1, the relay having its coil energized from the supply and preferably having a further pair of contacts which complete the supply circuit to the input terminals 2 of the apparatus either directly (as shown), or through the intermediary of another relay, when the coil is energized. In the case of a precipitator, the relay 3 may be mounted inside the oil-filled sealing chamber for the high-voltage cable passing from the rectifier, the contact 12 being earthed and directly engaging the cable termination.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3056049A GB676243A (en) | 1949-11-29 | 1949-11-29 | Improvements in or relating to automatic safety devices for electrical power supplies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3056049A GB676243A (en) | 1949-11-29 | 1949-11-29 | Improvements in or relating to automatic safety devices for electrical power supplies |
Publications (1)
Publication Number | Publication Date |
---|---|
GB676243A true GB676243A (en) | 1952-07-23 |
Family
ID=10309561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3056049A Expired GB676243A (en) | 1949-11-29 | 1949-11-29 | Improvements in or relating to automatic safety devices for electrical power supplies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB676243A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021233921A1 (en) * | 2020-05-19 | 2021-11-25 | Bombardier Transportation Gmbh | Rail vehicle with an automatic grounding switch and method for grounding electrical conductors in a region of a rail vehicle |
-
1949
- 1949-11-29 GB GB3056049A patent/GB676243A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021233921A1 (en) * | 2020-05-19 | 2021-11-25 | Bombardier Transportation Gmbh | Rail vehicle with an automatic grounding switch and method for grounding electrical conductors in a region of a rail vehicle |
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