Calculating Tension in Overhead Conductor with added Wind pressure

In summary, the conversation discusses how to calculate the tension in an overhead conductor named "Dog" over a 100m span with a wind pressure of 900Pa. The properties of the "Dog" conductor, including its diameter, weight, area, CBL, expansion coefficient, and modulus of elasticity, are provided. The initial tension is stated to be 10% of the CBL and there is no change in temperature. The participants also discuss the meaning of "Dog" in this context and the significance of a wind load in pascals. The term CBL is clarified as the calculated breaking load of the conductor and the units for modulus of elasticity are stated as GPa.
  • #1
mnga021
2
0
Hi was wondering if anyone knows how to calculate the tension in a overhead conductor say 'Dog' conductor over a 100m Span with a wind of 900Pa given its properties are as below

'Dog' Conductor properties

Diameter = 14.15mm
Weight = 0.3965kg/m
Area = 118.8mm^2
CBL = 32.7kN
Expansion Co = 0.0000139
Mod of elasticity = 139

This is with an initial tension of 10% CBL.
And no change in temperature.
 
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  • #2
If we take away the wind, I would presume that this is a basic catenary calculation; do you agree? What does the term "Dog" denote? What does a wind load in Pa mean? We normally specify wind loading by giving wind speed, so what is this? What is CBL? What are the units on your modulus of elasticity?
 
  • #3
Dog is the name of the type of conductor which is used. wind load is wind pressure which you can convert to from wind speed. CBL is calculated breaking load of the conductor and the units on the modulus of elasticity is GPa. Pa is pascals.
 

Related to Calculating Tension in Overhead Conductor with added Wind pressure

1. How do you calculate tension in an overhead conductor with added wind pressure?

To calculate tension in an overhead conductor with added wind pressure, you will need to use the formula T = W + (P x D). T represents the tension, W represents the weight of the conductor, P represents the wind pressure, and D represents the distance between the attachment points.

2. What is the importance of calculating tension in overhead conductors?

Calculating tension in overhead conductors is important because it helps determine the maximum load the conductor can handle without breaking or sagging. This information is crucial for maintaining the safety and reliability of the electrical system.

3. How does wind pressure affect the tension in overhead conductors?

Wind pressure adds an additional force on the conductor, increasing the tension. The amount of tension added depends on the strength and direction of the wind, as well as the distance between the attachment points.

4. Can tension in overhead conductors be calculated for all types of wind conditions?

Yes, tension in overhead conductors can be calculated for all types of wind conditions as long as the wind strength and direction are known. However, it is important to note that the calculations may not accurately reflect extreme weather conditions such as hurricanes or tornadoes.

5. Are there any safety precautions that should be taken when calculating tension in overhead conductors with added wind pressure?

Yes, it is important to take safety precautions when calculating tension in overhead conductors with added wind pressure. This includes wearing appropriate protective gear and using caution when handling equipment near electrical lines. It is also recommended to have a trained professional perform the calculations to ensure accuracy and safety.

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