GB849176A - Apparatus for testing electric cable insulation - Google Patents
Apparatus for testing electric cable insulationInfo
- Publication number
- GB849176A GB849176A GB37234/58A GB3723458A GB849176A GB 849176 A GB849176 A GB 849176A GB 37234/58 A GB37234/58 A GB 37234/58A GB 3723458 A GB3723458 A GB 3723458A GB 849176 A GB849176 A GB 849176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulation
- cable
- tube
- earthed
- electrode
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
- G01R31/59—Testing of lines, cables or conductors while the cable continuously passes the testing apparatus, e.g. during manufacture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
849,176. Testing cable insulation. OKONITE CO. Nov. 19, 1958, No. 37234/58. Class 37 The insulation of an electrical cable is continuously tested by passing it through an insulating tube having earthed plugs at each end and a condensable vapour filling the tube so that it condenses on the surface of the insulation to form a slightly conductive film there. A high voltage source is connected between the central conductor of the cable and an electrode in the insulating tube so that the insulation of the cable is subjected to a dielectric stress the ionization characteristics of the insulation being continuously observed as the cable passes through the tube. The Figure shows an apparatus for testing insulation of an electric cable 2 the central conductor of which is grounded at the reel 12 from which it is fed via an insulating tube 4 on to the take-up reel 14 at which also the central conductor is earthed. The insulating tube 4 is provided with earthed stuffing boxes 6 at each end and is filled with a condensable vapour such as wet steam which condenses on the surface of the insulation and is finally collected in a sump near the centre of the tube. Contact is made with the cable at the centre of its passage through the tube 4 by means of an electrode 8 and contact roller 9. High voltage from a transformer 20 is connected between the electrode 8 and the earthed centre conductor of the cable and the ionization characteristics of the insulation are observed by a radio receiver 34 and a recording galvanometer 40 connected to the electrode 8. By adjustment of the voltage from transformer 20 the characteristics of the insulation at varying stress voltages may be found.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB37234/58A GB849176A (en) | 1958-11-19 | 1958-11-19 | Apparatus for testing electric cable insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB37234/58A GB849176A (en) | 1958-11-19 | 1958-11-19 | Apparatus for testing electric cable insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB849176A true GB849176A (en) | 1960-09-21 |
Family
ID=10394844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37234/58A Expired GB849176A (en) | 1958-11-19 | 1958-11-19 | Apparatus for testing electric cable insulation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB849176A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782146A (en) * | 2019-01-30 | 2019-05-21 | 中国电力科学研究院有限公司 | A kind of device of the insulation characterisitic based on the cooling test low temperature insulation material of conduction |
| CN114034991A (en) * | 2021-11-02 | 2022-02-11 | 常熟理工学院 | Low-voltage circuit breaker load side distribution line insulation on-line detection and protection device |
-
1958
- 1958-11-19 GB GB37234/58A patent/GB849176A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782146A (en) * | 2019-01-30 | 2019-05-21 | 中国电力科学研究院有限公司 | A kind of device of the insulation characterisitic based on the cooling test low temperature insulation material of conduction |
| CN114034991A (en) * | 2021-11-02 | 2022-02-11 | 常熟理工学院 | Low-voltage circuit breaker load side distribution line insulation on-line detection and protection device |
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