JPS57151872A - Device for diagnosing insulation - Google Patents
Device for diagnosing insulationInfo
- Publication number
- JPS57151872A JPS57151872A JP3715981A JP3715981A JPS57151872A JP S57151872 A JPS57151872 A JP S57151872A JP 3715981 A JP3715981 A JP 3715981A JP 3715981 A JP3715981 A JP 3715981A JP S57151872 A JPS57151872 A JP S57151872A
- Authority
- JP
- Japan
- Prior art keywords
- capacitance
- sample
- void ratio
- measured
- computed
- 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.)
- Pending
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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
PURPOSE:To diagnose the insulation highly accurately at a low temperature at which partial discharge is not generated, by computing a void ratio based on the initial value of the earth capacitance of a sample which is insulated by a solid state insulator and the measured values of the capacitance obtained later on. CONSTITUTION:The initial value COL of the earch capacitance of the sample 5 wherein electrodes 1A and 1B are insulated by the solid state insulator 2 is measured by a capacitance meter 4 and stored in an initial memory 6. The earth capacitance COX of the sample 5 is measured by the same method based on the following diagnoses and processed by a differential circuit 8 and a divider 9 together with the capacitance COL stored in the memory 6. A value K which is proportional to the void ratio t2/t based on the equation I is computed and shown by a K display 10. Therefore the partial display is not generated at the void part, the void ratio is computed and displayed at a low voltage, and the highly accurate insulation diagnosis can be performed. In the equation, epsilon is the permittivity of the insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3715981A JPS57151872A (en) | 1981-03-14 | 1981-03-14 | Device for diagnosing insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3715981A JPS57151872A (en) | 1981-03-14 | 1981-03-14 | Device for diagnosing insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57151872A true JPS57151872A (en) | 1982-09-20 |
Family
ID=12489812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3715981A Pending JPS57151872A (en) | 1981-03-14 | 1981-03-14 | Device for diagnosing insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57151872A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63175776A (en) * | 1987-01-16 | 1988-07-20 | Nkk Corp | Method and device for diagnosing insulation of electric equipment |
| JPS63177075A (en) * | 1987-01-19 | 1988-07-21 | Nkk Corp | Method and apparatus for diagnosing insulation of electric machinery |
| CN114200272A (en) * | 2022-02-17 | 2022-03-18 | 山东汇能电气有限公司 | Switch cabinet health state operation feedback system based on partial discharge detection |
-
1981
- 1981-03-14 JP JP3715981A patent/JPS57151872A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63175776A (en) * | 1987-01-16 | 1988-07-20 | Nkk Corp | Method and device for diagnosing insulation of electric equipment |
| JPH057662B2 (en) * | 1987-01-16 | 1993-01-29 | Nippon Kokan Kk | |
| JPS63177075A (en) * | 1987-01-19 | 1988-07-21 | Nkk Corp | Method and apparatus for diagnosing insulation of electric machinery |
| JPH0511911B2 (en) * | 1987-01-19 | 1993-02-16 | Nippon Kokan Kk | |
| CN114200272A (en) * | 2022-02-17 | 2022-03-18 | 山东汇能电气有限公司 | Switch cabinet health state operation feedback system based on partial discharge detection |
| CN114200272B (en) * | 2022-02-17 | 2022-04-26 | 山东汇能电气有限公司 | Switch cabinet health state operation feedback system based on partial discharge detection |
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