JPS57153271A - Diagnostic method and device for degradation of insulation of coil - Google Patents
Diagnostic method and device for degradation of insulation of coilInfo
- Publication number
- JPS57153271A JPS57153271A JP56038659A JP3865981A JPS57153271A JP S57153271 A JPS57153271 A JP S57153271A JP 56038659 A JP56038659 A JP 56038659A JP 3865981 A JP3865981 A JP 3865981A JP S57153271 A JPS57153271 A JP S57153271A
- Authority
- JP
- Japan
- Prior art keywords
- degradation
- coil
- detected
- insulation
- oscillation
- 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
- 230000015556 catabolic process Effects 0.000 title abstract 5
- 238000006731 degradation reaction Methods 0.000 title abstract 5
- 238000009413 insulation Methods 0.000 title abstract 3
- 238000002405 diagnostic procedure Methods 0.000 title 1
- 238000013016 damping Methods 0.000 abstract 4
- 230000010355 oscillation Effects 0.000 abstract 3
- 230000000737 periodic effect Effects 0.000 abstract 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 230000035882 stress Effects 0.000 abstract 1
- 230000008646 thermal stress Effects 0.000 abstract 1
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
- G01R31/72—Testing of electric windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
PURPOSE:To discriminate the degree of degradation of coil insulation nondestructively, by taking notice of the change of the periodic damping state for the degradation of coil insulating materials and detecting this change. CONSTITUTION:When the adhesive strength of an insulating layer is lowered by a thermal degradation and the insulating layer is peeled by the thermal stress in operation and the mechanical stress such as vibration to reduce the tightness of the insulating layer, this reduction of the tightness is detected clearly as a change of periodic damping. Then, when a machine to be tested is still, a coil end 6 is excited by a hammer ring or an exciter 12 is provided in the coil end 6 to excite the coil end 6, and the oscillation is amplified by a preamplifier 8 when the oscillation is detected by a detecting sensor 7, and this amplified oscillation is filtered by a band pass filter 9, and a periodic damping factor is detected by a damping factor measuring circuit 10 and is displayed quantitatively on a display equipment 11. Thus, the state of the degradation of insulation is accurately detected quantitatively without applying a high voltage or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56038659A JPS57153271A (en) | 1981-03-19 | 1981-03-19 | Diagnostic method and device for degradation of insulation of coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56038659A JPS57153271A (en) | 1981-03-19 | 1981-03-19 | Diagnostic method and device for degradation of insulation of coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57153271A true JPS57153271A (en) | 1982-09-21 |
Family
ID=12531381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56038659A Pending JPS57153271A (en) | 1981-03-19 | 1981-03-19 | Diagnostic method and device for degradation of insulation of coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57153271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6444868A (en) * | 1987-08-14 | 1989-02-17 | Hiromitsu Okumura | Coil testing method and apparatus used therein |
| WO2013016750A1 (en) * | 2011-08-01 | 2013-02-07 | Technische Universitat Wien | Method and device for detecting a deterioration in the state of an insulation in an operating electric machine |
-
1981
- 1981-03-19 JP JP56038659A patent/JPS57153271A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6444868A (en) * | 1987-08-14 | 1989-02-17 | Hiromitsu Okumura | Coil testing method and apparatus used therein |
| WO2013016750A1 (en) * | 2011-08-01 | 2013-02-07 | Technische Universitat Wien | Method and device for detecting a deterioration in the state of an insulation in an operating electric machine |
| RU2599910C2 (en) * | 2011-08-01 | 2016-10-20 | Технише Универзитет Вена | Method and device for online detection of deterioration of electric motor insulation |
| US9529032B2 (en) | 2011-08-01 | 2016-12-27 | Technische Universitat Wien | Method and device for detecting a deterioration in the state of an insulation in an operating electric machine |
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