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EX-702 (C) High Voltage Engineering Notes

5 notes for High Voltage Engineering, unit by unit.

Unit 1 · Short notes Introduction Introduction to $HV$ technology · Advantages of transmitting electrical power at high voltages · Need for generating high voltages in laboratory · Important applications of high voltage
Unit 2 · Short notes Breakdown phenomena Classification of $HV$ insulating media · Properties of important $HV$ insulating media · Gaseous dielectrics: primary and secondary ionization processes · Breakdown criteria for gaseous insulation based on Townsend’s theory · Limitations of Townsend’s theory · Streamer theory breakdown in non‑uniform fields
Unit 3 · Short notes Generation of $HV$ AC, DC and impulse voltage and current $HV$ AC transformer and cascade connection of transformer units · Series resonant circuit principle of operation and advantages · Tesla coil · $HV$ DC voltage doubler circuit · Cockcroft‑Walton type high‑voltage $DC$ set · Standard lightning and switching impulse voltages
Unit 4 · Short notes Measurement of high voltages Electrostatic voltmeter: principle, construction and limitations · Generating voltmeter: principle and construction · Series‑resistance micro‑ammeter for $HV$ $DC$ measurements · Standard sphere‑gap measurements for $HV$ $AC$, $HV$ $DC$ and impulse voltages and influencing factors · Potential dividers: resistance, capacitance and mixed $RC$ types · Surge current measurement techniques
Unit 5 · Short notes High voltage tests on electrical apparatus Definitions of high‑voltage testing technologies · Tests on isolators · Tests on circuit breakers · Tests on cables and insulators · Tests on transformers

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