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Whenever the conductors are dead-ended or there is a change in the direction of transmission line, the insulators used are of the
  • a)
    Pin type
  • b)
    Suspension type
  • c)
    Strain type
  • d)
    Shackle type
Correct answer is option 'C'. Can you explain this answer?
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Whenever the conductors are dead-ended or there is a change in the dir...
Insulators for Transmission Lines

Insulators are an important component of transmission lines as they provide electrical isolation and mechanical support to the conductors. There are four types of insulators used in transmission lines, namely pin type, suspension type, strain type, and shackle type.

Strain Type Insulators

Strain type insulators are used when the conductors are dead-ended or there is a change in the direction of transmission line. They are designed to withstand the mechanical stress caused by the tension of the conductors. Strain insulators are also known as tension insulators.

Features of Strain Type Insulators

- Strain type insulators are made of porcelain or glass material.
- They are designed to withstand the mechanical stress caused by the tension of the conductors.
- They have a unique design that allows them to be attached to the tower or structure, while the conductors pass through them.
- Strain type insulators are available in different sizes and capacities to suit the requirements of the transmission line.

Advantages of Strain Type Insulators

- They provide electrical isolation and mechanical support to the conductors.
- They are durable and can withstand harsh weather conditions.
- They are easy to install and maintain.

Disadvantages of Strain Type Insulators

- They are relatively expensive compared to pin type insulators.
- They require more space compared to pin type insulators.

Conclusion

In conclusion, strain type insulators are used when the conductors are dead-ended or there is a change in the direction of transmission line. They provide electrical isolation and mechanical support to the conductors and are made of porcelain or glass material. They have a unique design that allows them to be attached to the tower or structure, while the conductors pass through them. Strain type insulators are durable, easy to install and maintain, but are relatively expensive compared to pin type insulators.
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Strain type insulators
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it depends on the length of the conductor the capacitance of the line is proportional to the length of the transmission line their effect is negligible on the performance of short having a length less than 80 km and low voltage transmission accidents of the transmission line along with the conductances forms the shunted mittens the conductance and the transmission line is because of the leakage over the surface of the conductor considered a line consisting of two conductors and be each of radius are the distance between the conductors being Des shown in the diagram below minus the potential difference between the conductors and via's work QA charge on conductor QB charge on conductor vvab pencil difference between conductor and the Epsilon minus absolute primitivity QA plus QV = 0 so that QA equals QB - equals DBA equals data equals DB equals our substituting these values and voltage equation we get the capacitance between the conductors is cab is referred to as lying to line capacitance if the two conductors are in VR oppositely charge then the potential difference between them is zero then the potential of each conductor is given by one half bath the capacitance between each conductor and point of zero potential and is capacitive CN is called the capacitance to neut or capacitance to ground capacitance cab is the combination of two equal capacity and VN series thus capacitance to neutral is twice the capacitance between the conductors IE CN equals to Cave the absolute primitivity Epsilon is given by Epsilon equals epsilono Epsilon are where epsilano is the permittivity of the free space and Epsilon or is the relative primitivity of the medium prayer capacitance reactants between one conductor and neutral capacitance of the symmetrical three phase line let a balanced system of voltage be applied to a symmetrical three-phase line shown below the phasor diagram of the three phase line with equilateral spacing is shown below take the voltage of conductor to neutral as a reference phaser the potential difference between conductor and we can be written the similarly potential difference between conductors and sea is on adding equations one and two we get also combining equation three and four from equation 6 and 7 the line to neutral capacitance the capacitance of symmetrical three phase line is same as that of the two wire line Related: Capacitance of Transmission Lines?

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Whenever the conductors are dead-ended or there is a change in the direction of transmission line, the insulators used are of thea)Pin typeb)Suspension typec)Strain typed)Shackle typeCorrect answer is option 'C'. Can you explain this answer?
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