H - Electricity – 01 – F
Patent
H - Electricity
01
F
347/3, 336/67
H01F 27/32 (2006.01)
Patent
CA 1199081
ABSTRACT OF THE DISCLOSURE An insulating system is described that incorporates a cellulosic material which is impregnated with a nitrogen content no less than 0.2% by weight and a overall density not greater than 0.9 gm/cm3. This cellulosic material when impregnated by a dielectric liquid such as transformer oil, exhibits a more uniform electrical stress distribution than papers having a density greater than 0.9 gm/cm3. The insulat- ing system thereformed is particularly useful for application in low stress areas such as the layer insulation in a dis- tribution class transformer.
427652
Acker Clarence R.
Hettwer Paul F.
Sadler Fred S.
Viet Vu H.
Mcgraw-Edison Company
Shapiro Cohen
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