# String Effeciency and methods to improve String Effeciency

The ratio of voltage across the whole string to the product of number of discs and the voltage across the disc nearest to the conductor is known as string efficiency i.e.,
$String effeciency = \frac{Volatge across String}{n\times Voltage across disc nearest to conductor}$
where n = number of discs in the string.
String efficiency is an important consideration since it decides the potential distribution along the string. The greater the string efficiency, the more uniform is the voltage distribution. Thus 100% string efficiency is an ideal case for which the volatge across each disc will be exactly the same. Although it is impossible to achieve 100% string efficiency, yet efforts should be made to improve it
as close to this value as possible. Continue reading

# Construction of cables

1. Core or Conductors
2. Insulators
3. Metallic sheath
4. Bedding
5. Armouring
6. Serving

Construction of cables

# Types of Cables Fault

Megger (A Modern Version)