Could you answer please? What do you understand by Safety factor, puncture and Flashover of Insulator

Answered: What do you understand by Safety…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Concept explainers

Question

Could you answer please?

What do you understand by Safety factor, puncture and Flashover of Insulator

Expert Solution

Step 1

The part section of a pin type insulator is shown in the figure below:

Step 2

Insulators should be designed such that they are required to withstand both electrical stress i.e. voltage gradient and mechanical stress i.e. tension on it due to the weight of the conductor.
The electrical stress is primarily due to the line voltage that causes the breakdown of the insulator. The electrical breakdown of an insulator can occur either by flash-over or puncture.
Flash-over: In a flashover, an electric arc occurs between the insulator pin (which is grounded) and the line conductor (which is live). The discharge due to electric arc jumps across the air-gaps as shown in the figure below follows the shortest distance i.e., from $a \to b \to c$ .
In the flash-over, the insulator remains safe until an extreme heat produced by the electric arc destroys the insulator.

Step by step

Solved in 3 steps with 2 images

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions