Generate And Testing High Voltage AC, DC And Impulse On The Material Of Insulator On Oil Transformer

Sabaruddin , Mohammad (2009) Generate And Testing High Voltage AC, DC And Impulse On The Material Of Insulator On Oil Transformer. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project is about to generate and testing high voltage AC, DC and Impulse on the material of insulator and oil transformer. HV test objects are limited to measuring the inception voltage (inkV) and the largest discharge magnitude (in pC) and comparing these to the test specifications. Impulse voltage test demonstrates the strength of an insulation system and its components against impulse voltage. The problems of Ordinary transformer insulating oil is that arise are most frequently due to contaminant by dirt, air and water. The condition of the oil as initially installed must be good. If an accidental over-voltage results in a flashover, the oil will have a small amount of carbon in it, weakening the oil. Filtering is a wise thing to do if any spark-over occur. If the oil should inadvertently become so carbonized that it becomes perceptibly darkened, then the oil is weakened point where corona established on the solid on which the transform are wound. Once corona is established., which happen at less than once oil is badly weaken tracks will grow until breakdown occurs. The pre-breakdown characteristics of transformer oil in the presence of different levels of contamination.

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