GB603592A - A method of cable protection applicable to three-phase high tension ring main feeding systems - Google Patents
A method of cable protection applicable to three-phase high tension ring main feeding systemsInfo
- Publication number
- GB603592A GB603592A GB2408245A GB2408245A GB603592A GB 603592 A GB603592 A GB 603592A GB 2408245 A GB2408245 A GB 2408245A GB 2408245 A GB2408245 A GB 2408245A GB 603592 A GB603592 A GB 603592A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fault
- high tension
- ring main
- phase high
- cable protection
- 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
- H02H7/22—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 distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/226—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 distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
603,592. Detecting and indicating faults. ASIA ELECTRIC, Ltd., and YOUNG, D. S. Sept. 18, 1945, No. 24082. [Class 37] [Also in Group XXXVII] The sheaths 4 of single-core cables 1 ... 3 of a feeding system having its neutral earthed through a currentlimiting resistance, are bonded together at regular intervals 9, 10 to provide a low-resistance path for fault current, the continuity of the sheathing in each section being interrupted at 5 to prevent the sheathing from acting as a return path for other fault currents. On a fault in the cable-insulation, the earth - fault current energizes a current transformer 13 in the sheathto-earth connection 11 at A, thereby opening contacts 29 and de-energizing relay 31 to close contacts 32 in the circuit of an alarm 21 indicating device which is either situated locally or at a remote control station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2408245A GB603592A (en) | 1945-09-18 | 1945-09-18 | A method of cable protection applicable to three-phase high tension ring main feeding systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2408245A GB603592A (en) | 1945-09-18 | 1945-09-18 | A method of cable protection applicable to three-phase high tension ring main feeding systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB603592A true GB603592A (en) | 1948-06-18 |
Family
ID=10206074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2408245A Expired GB603592A (en) | 1945-09-18 | 1945-09-18 | A method of cable protection applicable to three-phase high tension ring main feeding systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB603592A (en) |
-
1945
- 1945-09-18 GB GB2408245A patent/GB603592A/en not_active Expired
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