Electrical devices containing silacyclopentene dielectric fluids

DETAILED DESCRIPTION That which is claimed is: 1.
In an electrical device containing a dielectric fluid, the improvement comprising employing as the dielectric fluid a siloxane having the general formula ##STR7## wherein each R is independently selected from the group consisting of methyl, phenyl, chloropropyl, and 3,3,3-trifluoropropyl radicals, and x is an integer.
2.
A device as defined in claim 1 wherein the fluid has a viscosity in the range of 5 to 500 cs.
at 25.
degree.
C.
3.
A device as defined in claim 2 wherein in the fluid some of the R's are methyl radicals and some of the R's are phenyl radicals.
4.
A device as defined in claim 2 wherein in the fluid all of the R's are methyl radicals.
5.
A device as defined in claim 4 wherein x is zero.
6.
A device as defined in claim 4 wherein x has an average value of about five.
7.
A device as defined in claim 1 which is a capacitor.
8.
A device as defined in claim 4 which is a capacitor.
9.
A device as defined in claim 1 which is a transformer.
10.
A device as defined in claim 4 which is a transformer.
11.
A device as defined in claim 3 wherein the R radicals attached to the silacyclopentene silicon atoms are methyl radicals, the R radicals attached to all the other silicon atoms are phenyl radicals, and x has an average value of 1.
12.
A device as defined in claim 11 which is a capacitor.
13.
A device as defined in claim 11 which is a transformer.




Description:
In numerous electrical devices it is necessary to provide a liquid insulating medium which is called a "dielectric fluid.
" This liquid has a substantially higher breakdown strength than air and by displacing air from space between conductors in the electrical equipment or apparatus, materially raises the breakdown voltage of the electrical device.
With the ever increasing sophistication of electrical equipment, the various electrical devices are operating at higher and higher voltages.
This means that the dielectric fluids used in such devices are subjected to greater and greater stresses