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SYLLABUS
UNIT-I
Breakdown in Gases Ionization processes and de-ionization processes, Types of discharge, Gases as insulating materials, Breakdown in uniform gap, Non-uniform gaps, Townsend’s theory, Streamer mechanism, Corona discharge. Breakdown in Liquid and solid Insulating Materials Breakdown in pure and commercial liquids, Solid dielectrics and composite dielectrics, Intrinsic breakdown, Electromechanical breakdown and thermal breakdown, Partial discharge, Applications of insulating materials.
UNIT-II
Generation of High Voltages Generation of high voltages, Generation of high D.C and A.C voltages, Generation of Impulse voltages, Generation of impulse currents, Tripping and control of impulse generators.
UNIT-III
Measurements of High Voltages and Currents Peak voltage, Impulse voltage and high direct current measurement method, Cathode ray oscillographs for impulse voltage and current measurement, Measurement of dielectric constant and loss factor, Partial discharge measurements.
UNIT-IV
Lightning and Switching over-voltages Charge formation in clouds, Stepped leader, Dart leader, Lightning surges, Switching overvoltages, Protection against over-voltages, Surge diverters, Surge modifiers.
UNIT-V
High voltage testing of Electrical Apparatus and High voltage laboratories Various standards for HV testing of electrical apparatus, IS, IEC standards, Testing of insulators and bushings, Testing of isolators and circuit breakers, Testing of cables, Power transformers and some high voltage equipment, High voltage laboratory layout, Indoor and outdoor laboratories, Testing facility requirements, Safety precautions in HV Labs.
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CategoriesEngineering
Format EPUB
TypeeBook