Question

Q4. What do you understand the concept of critical disruptive voltage and how it vary with 4 different types of conductors..

Answer 1

→ Deustion: What do you Understand the concept of critical dist uptive voltage and hove with different types Conductors. क it uarry about Solution: * Critical destoupitive Goltage: Before understanding clitical distruptive voltage we need to undestand what is corona effect? corona effect is nothing But donization of ail around the povel cond wetor. Due to radiactivity 9n all there will be free elect- -rons, as voltage gradient the cond- -uto increases and become greater than critical distruptive valtago corona corona effect occurs. = critical distruptive usltage is defined as, Vd at d mom (4) koloms neal

- Uhese 11 Xadües of condudor, Smallt decility factor Vc = Magasin (1) kug|pb. (Rond] 943+ T in cm of Blu conductor all densing facter 34996 mo - surfaces quaogularity facto b bamometric atmospulle pressure Ilg: T: Temp. de raduis of conductor d- distanu & dielactic shength of all (2100 KW / cm) ame. 9 Nowe How Vd depends on different conducters? Vd amo so for different conductors ma is diffell nt and so la for Bette understanding See see this table. S Types of conduity smooth conductor 93-98 for Rough of stranded conductor а) we can that see mo 3 .83 07 for seven stranded cable .9 than seven for more stranded cable