Tracking And Erosion Performance Of Silicone Rubber Under AC And DC Voltage

Ismail, Omar (2017) Tracking And Erosion Performance Of Silicone Rubber Under AC And DC Voltage. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Silicone rubber (SIR) are broadly used as the insulation materials in high voltage engineering either in AC or DC electrical power system due to their advantages. The increase of interested in polymeric high voltage insulation technology has been driving the force for a lot of research on silicone rubber performance. However, the life term performance or aging of silicone rubber is still questionable. The most common method to determine their aging is by conducting tracking and erosion test, but the tracking and erosion test is only available in AC voltage. Thus the study on silicon rubber (SIR) in DC voltage is vital. In this study, tracking and erosion of SIR were evaluated under DC and AC voltage. Since there is no standard method for DC tracking and erosion, AC Incline Plane Tracking (IPT) BS EN 60587:2007 international standard was complied. Method 1 in BS EN 60587:2007, the application of constant tracking voltage was applied in this test. The test parameter voltage and flow rate for this test are -3.5kV DC, 3.5kV AC and 0.3ml/min respectively. Besides, surface temperature of SIR was measured for every 30 minutes during both AC and DC IPT test. The surface temperature was measured by using IRISYS IRI – 4010 Thermal Imager. In terms of tracking and erosion, SIR under -DC voltage test experienced more severe damage as compared to SIR under AC voltage test. Moreover, surface temperature of SIR in -DC IPT test were also higher than surface temperature of SIR in AC IPT test.

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