GB262431A - Improvements in and relating to electrical distribution systems - Google Patents
Improvements in and relating to electrical distribution systemsInfo
- Publication number
- GB262431A GB262431A GB30427/26A GB3042726A GB262431A GB 262431 A GB262431 A GB 262431A GB 30427/26 A GB30427/26 A GB 30427/26A GB 3042726 A GB3042726 A GB 3042726A GB 262431 A GB262431 A GB 262431A
- Authority
- GB
- United Kingdom
- Prior art keywords
- breaker
- coil
- network
- voltage
- current
- 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
- H02H3/003—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 power transmission direction
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
262,431. British Thomson-Houston Co., Ltd., (Assignees of Woodrow, H. R.). Dec. 1, 1925, [Convention date]. Switching systems; systems depending on the use of static transformers.-High voltage mains 1 are connected to a low voltage network 4 by parallel feeders 7 including circuit breakers 5, transformers 3 and automatic circuit breakers 6. Each feeder 7 is associated with a relay 9 for tripping the breaker 6 on the occurrence of reverse energy flow in the feeder from the network 4 due to either a fault or to the magnetizing current for the transformer 3 being drawn from the network due to the breaker 5 being opened. The relay 9 has a voltage coil 10, and a current coil 11 connected across an easily saturated inductance 8, so that the coil can be made sensitive to a small magnetizing current and yet not be damaged by a heavy fault current. When the breaker 5 is reclosed, the coil 11 serves to ascertain when there is equality of voltage and phase on opposite sides of the breaker 6 and thereupon to energize the closing coil 17 of the breaker. When the breaker is open an impedance 16 is in series with the coil 11, but when closed the major part of this impedance is shorted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US262431XA | 1925-12-01 | 1925-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB262431A true GB262431A (en) | 1927-04-07 |
Family
ID=21830682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30427/26A Expired GB262431A (en) | 1925-12-01 | 1926-12-01 | Improvements in and relating to electrical distribution systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB262431A (en) |
-
1926
- 1926-12-01 GB GB30427/26A patent/GB262431A/en not_active Expired
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