Effect of Mineral Oil on Electrical Properties of HTV Silicone Rubber under Thermal and AC Corona Aging

2019 ◽  
Author(s):  
Yan Yang ◽  
Ke Wang ◽  
Yu Yu ◽  
Jinzhong Li ◽  
Shuqi Zhang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Silicone Rubber ◽  
Mineral Oil

Effect of Water on Electrical Properties of Refined, Bleached, and Deodorized Palm Oil (RBDPO) as Electrical Insulating Material

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Nazera Ismail ◽  
Yanuar Z. Arief ◽  
Zuraimy Adzis ◽  
Shakira A. Azli ◽  
Abdul Azim A. Jamil ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Breakdown Voltage ◽  
Palm Oil ◽  
Pour Point ◽  
Electrical Breakdown ◽  
Dissipation Factor ◽  
Mineral Oil ◽  
Flash Point ◽  
Effect Of Water ◽  
Insulating Liquid

This paper describes the properties of refined, bleached, deodorized palm oil (RBDPO) as having the potential to be used as insulating liquid. There are several important properties such as electrical breakdown, dielectric dissipation factor, specific gravity, flash point, viscosity and pour point of RBDPO that was measured and compared to commercial mineral oil which is largely in current use as insulating liquid in power transformers. Experimental results of the electrical properties revealed that the average breakdown voltage of the RBDPO sample, without the addition of water at room temperature, is 13.368 kV. The result also revealed that due to effect of water, the breakdown voltage is lower than that of commercial mineral oil (Hyrax). However, the flash point and the pour point of RBDPO is very high compared to mineral oil thus giving it advantageous possibility to be used safely as insulating liquid. The results showed that RBDPO is greatly influenced by water, causing the breakdown voltage to decrease and the dissipation factor to increase; this is attributable to the high amounts of dissolved water.

Effects of catalyst on the electrical properties of silicone rubber

1984 ◽  
Vol 29 (6) ◽  
pp. 1951-1958 ◽  
Author(s):  
T. Yokoyama ◽  
N. Kinjo ◽  
J. Mukai
Keyword(s):  
Electrical Properties ◽  
Silicone Rubber

Fillers in Electrical Papers for Power Transformers

2014 ◽  
Vol 875-877 ◽  
pp. 335-340 ◽  
Author(s):  
Primo Alberto Calva ◽  
Aarón Israel Díaz ◽  
Hugo Martínez Gutierrez
Keyword(s):  
Electrical Properties ◽  
Theoretical Analysis ◽  
Structural Parameters ◽  
Dielectric Strength ◽  
Mineral Oil ◽  
Dielectric Behavior ◽  
Power Transformers ◽  
Mechanical Resistance ◽  
Kraft Paper ◽  
Natural Ester

The electric papers have a wide variety of uses like in transformers, cables and power capacitors. Each application involves different requirements related to its mechanical and electric properties. The kraft is the dielectric paper most used due its high mechanical resistance and a dielectric strength of around 5 kV/mm that is increased up to 30 kV/mm when is impregnated with mineral oil and typically has a density of 0.7, nevertheless continuous improvements in the design, for example, of power transformers raise the need to improve its electrical properties particularly those related to its relative permittivity. In this article, structural parameters such as distribution and pore size of kraft paper and theoretical analysis for possible addition of nanofillers to improve their dielectric behavior are reported. A possible and better criterion for designing transformers can be the employment of kraft paper nano-inserted with 5 % of TiO2 or BaTiO3 stew in mineral oil and immersed in natural ester liquid.

Sign in / Sign up

Export Citation Format

Share Document