A test and instrumentation system for the investigation of degradation of electrical insulating materials
Abstract
A comprehensive test apparatus has been developed for the evaluation of the effects of thermal cycling, high temperatures and high electric fields on the quality and stability of electrical insulating materials used in spacecraft systems. The system includes a test chamber in which the specimen can be subjected to thermal and electrical stresses encountered in the space environment (temperatures from -50 to 200 C and voltages from 0 to 10 kV rms, respectively) simultaneously. The system instrumentation includes provisions for the measurement of the change in capacitance, the thermal dissipation factor of the material, and complex dielectric constants with changes in temperature, corona intensity and voltages at frequencies from 22 kHz to 70 MHz, as well as the volume and surface resistivities of the materials.
- Publication:
-
SOUTHEASTCON 1981; Proceedings of the Region 3 Conference and Exhibit
- Pub Date:
- 1981
- Bibcode:
- 1981ieee.conf..499D
- Keywords:
-
- Electrical Insulation;
- Solar Cells;
- Spacecraft Electronic Equipment;
- Test Equipment;
- Thermal Degradation;
- Capacitance;
- Cooling;
- Electric Fields;
- Electrical Measurement;
- Electrical Resistivity;
- High Temperature;
- Materials Tests;
- Measuring Instruments;
- Stress Cycles;
- Temperature Effects;
- Thermal Stresses;
- Electronics and Electrical Engineering