GB285588A - Improvements in or relating to control apparatus for electrical apparatus, such as motors - Google Patents
Improvements in or relating to control apparatus for electrical apparatus, such as motorsInfo
- Publication number
- GB285588A GB285588A GB2965526A GB2965526A GB285588A GB 285588 A GB285588 A GB 285588A GB 2965526 A GB2965526 A GB 2965526A GB 2965526 A GB2965526 A GB 2965526A GB 285588 A GB285588 A GB 285588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- circuit breaker
- contacts
- circuit
- open
- 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
- H02H7/005—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 remote controlled apparatus; for lines connecting such apparatus
Abstract
285,588. Scarf, C. T., Last, C. H., Gowan, S., and Metropofitan-Vickers Electrical Co., Ltd. Nov. 23. 1926. Protective arrangements. - A gate end switch similar to that disclosed in Specification 262,553 is provided with a relay 110, the coil of which is in circuit with the power conductor 2. When the circuit breaker is open, an interlocking lever 112 holds the relay contacts open. As the circuit breaker closes the relay is released but is still held open by current flowing in the power conductor 2. When the pilot switch handle 60 is moved to the " off " position, should the circuit breaker remain closed, the power circuit is broken at the contacts 24, 23. 26, thus deenergizing the relay 110, which closes its contacts. A relay 7a thereupon opens and through other relays de-energizes the coil which holds the circuit breaker closed, the latter thereupon opening, In a modification, the existing relay 79 is used and is so interlocked with the circuit breaker that during the closing movement of the latter the relay is moved from the closed position to the open and then released. The circuit for the relay 7a is through auxiliary contacts on the circuit breaker and the existing contacts on the relay 79, The system is applicable to the control of a power supply having no earthed neutral point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2965526A GB285588A (en) | 1926-11-23 | 1926-11-23 | Improvements in or relating to control apparatus for electrical apparatus, such as motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2965526A GB285588A (en) | 1926-11-23 | 1926-11-23 | Improvements in or relating to control apparatus for electrical apparatus, such as motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB285588A true GB285588A (en) | 1928-02-23 |
Family
ID=10295007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2965526A Expired GB285588A (en) | 1926-11-23 | 1926-11-23 | Improvements in or relating to control apparatus for electrical apparatus, such as motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB285588A (en) |
-
1926
- 1926-11-23 GB GB2965526A patent/GB285588A/en not_active Expired
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