Question 2a) The most common method of classifying the solid insulating materials is basedupon their chemical compositions, distinguished mainly between inorganic, organicand the composites of the two materials. With aid of diagram, classify the propertiesand differences of PVC and porcelain materials in insulation systems.b) An oil-immersed 11kV/3.3kV distribution transfomer is experincing someabnormalities based on oil analy sis report at steel factory. Based on the maintenancepersonnel, the affected transformer always operates at higher loading during peakproduction period and tripping of unit will take place frequently due to operationalissues. Besides that, oil/winding temperature of the unit increased by 30% from theintial reading of 70 degC during overloading period. Based on the Table 2 (b)below, briefly intepret the:i. Causes and affects on the transformer's operating conditionii remedial action plans on this transformer to prevent solid or liquid dielectricbreakdown or failures.Test valuesParametersDielectric Strength (KV)Acidity (mgKOH/gm)ColorLiquid Power FactorWater Content (ppm)Hydrogen (H2) (ppm)Oxygen (02) (ppm)Nitrogen (N2) (ppm)Methane (CH4) (ppm)Carbon Monoxide ( CO) (ppm)Carbon Dioxide (CO2) (ppm)Ethane (C2H6) (ppm)Ethylene (C2H4) (ppm)Acetylene (C2H2) (ppm)300.0021.50.082040010,200102,4249017071275622Table 2 b

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a) The most common method of classifying the solid insulating materials is based upon their chemical compositions, distinguished mainly between inorganic, organic and the composites of the two materials. With aid of diagram, classify the properties and differences of PVC and porcelain materials in insulation systems.

a) The most common method of classifying the solid insulating materials is based upon their chemical compositions, distinguished mainly between inorganic, organic and the composites of the two materials. With aid of diagram, classify the properties and differences of PVC and porcelain materials in insulation systems.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.30P: Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and...

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