GB346518A - An improved electric conductor protective system - Google Patents
An improved electric conductor protective systemInfo
- Publication number
- GB346518A GB346518A GB572030A GB572030A GB346518A GB 346518 A GB346518 A GB 346518A GB 572030 A GB572030 A GB 572030A GB 572030 A GB572030 A GB 572030A GB 346518 A GB346518 A GB 346518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric conductor
- protective system
- improved electric
- relays
- energized
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
Landscapes
- Locating Faults (AREA)
Abstract
346,518. Protective cut-out arrangements. GRIPPER, L. A., 25, Lismore Road, Croydon. Feb. 20, 1930, No. 5720. [Class 38 (v).] A pilot circuit P is adapted to be energized from a D.C. source or sources B<1>, B<2> when unbalance occurs in either or both the split-conductor transformers TR<1> TR<2>, so that relays R<3>, R<4> are energized to close the circuits of the trip-coils TC<1>, TC<2> to open the breakers X. The devices R3, R<4> may, alternatively, directly operate a protective device. The contacts of the relays R<1> of the phases are in parallel with one another, and the pilot circuit can be incorporated in the cable as a telephone pair which would enable the testing of the circuit by a telephone. In a modification, Fig. 2 (not shown), a single battery is used at each end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB572030A GB346518A (en) | 1930-02-20 | 1930-02-20 | An improved electric conductor protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB572030A GB346518A (en) | 1930-02-20 | 1930-02-20 | An improved electric conductor protective system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB346518A true GB346518A (en) | 1931-04-16 |
Family
ID=9801363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB572030A Expired GB346518A (en) | 1930-02-20 | 1930-02-20 | An improved electric conductor protective system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB346518A (en) |
-
1930
- 1930-02-20 GB GB572030A patent/GB346518A/en not_active Expired
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