GB313030A - Improvements in or relating to electrical power distribution systems - Google Patents
Improvements in or relating to electrical power distribution systemsInfo
- Publication number
- GB313030A GB313030A GB688828A GB688828A GB313030A GB 313030 A GB313030 A GB 313030A GB 688828 A GB688828 A GB 688828A GB 688828 A GB688828 A GB 688828A GB 313030 A GB313030 A GB 313030A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- generator
- resistance
- motor
- switch
- 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
Landscapes
- Motor And Converter Starters (AREA)
Abstract
313,030. Igranic Electric 'Co., Ltd., (Cutter Hammer Manufacturing Co.). March 5, 1928. Systems depending on two or more machines. -The motor M of a motor-generator set at an automatic substation is started under reduced voltage applied by an auto-transformer 3, 4 in response to the closure of a switch 12, the field F of the motor being shorted through a resistance R<1>. When the voltage of the generator G has risen sufficiently as ascertained by a relay 20, the starting switches 1, 2 are opened and the full voltage running switch 5 is closed, also the field F is connected across the generator 5. Should full voltage running connections fail to be established before the expiration of a definite interval after establishment of starting connections, a thermal relay 15 interrupts the starting connections. Thereafter, when the generator reaches normal voltage as ascertained by relay 21, contacts 22R, 22L close and connect the supplied conductor D to the generator through a resistance R9. If the resistance of the circuit C, D is sufficiently high, tripping coil 29 releases the locked-up switch 27, which closes, and short circuits a resistance R8 in circuit with the closing coil 25 of the circuit-breaker CB. The circuit-breaker is thereupon closed. An overload causes opening of contacts 26 in the circuit of coil 25.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB688828A GB313030A (en) | 1928-03-05 | 1928-03-05 | Improvements in or relating to electrical power distribution systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB688828A GB313030A (en) | 1928-03-05 | 1928-03-05 | Improvements in or relating to electrical power distribution systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB313030A true GB313030A (en) | 1929-06-05 |
Family
ID=9822625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB688828A Expired GB313030A (en) | 1928-03-05 | 1928-03-05 | Improvements in or relating to electrical power distribution systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB313030A (en) |
-
1928
- 1928-03-05 GB GB688828A patent/GB313030A/en not_active Expired
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