Apparatus for detecting faults in magnet wire insulation without thermally damaging the insulation and which does not respond to impedance indications above a predetermined threshold value
US3970924A · kind A · utility
10Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 16, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/1272
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Test apparatus is disclosed which provides continuous non-destructive tests for faults in insulation coatings on wire. Means are provided for counting detected faults and actuating an alarm when the fault rate exceeds an undesired limit for any predetermined incremental length of wire. Switch means are provided which automatically adjust measuring sensitivity to correspond with the switch selected D-C test voltage applied to the insulation under test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.