Determination of threshold and maximum operating electric stresses for selected high voltage insulations. Task 2: Investigation of oil-filled paper insulated cables
Abstract
Threshold voltage of oil-impregnated paper insulated cables are investigaed. Experimental work was done on model cables specially manufactured for this project. The cables were impregnated with mineral and with synthetic oils. Standard impulse breakdown voltage tests and impulse voltage breakdown tests with dc prestressing were performed at room temperature and at 1000C. The most important result is the finding of very high level of threshold voltage stress for oil-impregnated paper insulated cables. This threshold voltage is approximately 1.5 times higher than the threshold voltage or crosslinked polyethylene insulated cables.
- Publication:
-
Progress Report Cable Technology Labs
- Pub Date:
- June 1983
- Bibcode:
- 1983ctli.rept.....S
- Keywords:
-
- Cables (Ropes);
- Electric Potential;
- Electrical Insulation;
- Impregnating;
- Oils;
- Paper (Material);
- Dielectric Properties;
- Prestressing;
- Room Temperature;
- Threshold Voltage;
- Electronics and Electrical Engineering