GB765993A - Location of high resistance faults in cables - Google Patents
Location of high resistance faults in cablesInfo
- Publication number
- GB765993A GB765993A GB870655A GB870655A GB765993A GB 765993 A GB765993 A GB 765993A GB 870655 A GB870655 A GB 870655A GB 870655 A GB870655 A GB 870655A GB 765993 A GB765993 A GB 765993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fault
- pulses
- voltage
- cables
- conductors
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
765,993. Fault indicating. STANDARD TELEPHONES & CABLES, Ltd. March 25, 1955, No. 8706/55. Drawings to Specification. Class 37. [Also in Group XL (c)] A weak point in the insulation between the conductors of an electrical transmission line, e.g. a coaxial cable, is detected by applying between the conductors a D.C. voltage which is increased until breakdown occurs at the point as indicated by a neon lamp in the line circuit. The voltage is then reduced until discharge at the fault ceases and recurrent voltage pulses are then applied, the amplitude of the pulses being increased until breakdown again occurs. The fault is then located by displaying the echo pulses from the fault on a cathode-ray oscilloscope synchronized with the applied pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB870655A GB765993A (en) | 1955-03-25 | 1955-03-25 | Location of high resistance faults in cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB870655A GB765993A (en) | 1955-03-25 | 1955-03-25 | Location of high resistance faults in cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB765993A true GB765993A (en) | 1957-01-16 |
Family
ID=9857672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB870655A Expired GB765993A (en) | 1955-03-25 | 1955-03-25 | Location of high resistance faults in cables |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB765993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990005311A1 (en) * | 1988-11-03 | 1990-05-17 | Electric Power Research Institute, Inc. | Method and means for testing insulation integrity on low-voltage, unshielded electrical cables |
-
1955
- 1955-03-25 GB GB870655A patent/GB765993A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990005311A1 (en) * | 1988-11-03 | 1990-05-17 | Electric Power Research Institute, Inc. | Method and means for testing insulation integrity on low-voltage, unshielded electrical cables |
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