What is the effect of ice and wind on SAG?
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What is the effect of ice and wind on SAG?
Some of the effects of ice and wind on sag include: The weight per unit length of the conductor is changed when the wind blows at a certain force on the conductor and ice accumulate around the conductor.
What is the effect of temperature on sag in overhead lines?
An increase in temperature in overhead lines leads to expansion of length and causes sag thereby decreasing the stress.
What are the various factors affecting the SAG magnitude Mcq?
Weight of conductor and directly proportional to span length.
What is the effect of temperature on sag in overhead line?
Explanation: An increase in temperature in overhead lines leads to expansion of length and causes sag thereby decreasing the stress.
What causes power lines to sag?
The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum, expand when heated. That expansion increases the slack between transmission line structures, causing them to sag.
What is SAG formula?
Calculation of sag and tension in transmission line depend on the span of the conductor. Span having equal level supports is called level span, whereas when the level of the supports is not at an equal level is known as unequal level span. The lowest point of the conductor is O. …
How is SAG calculated?
Calculation of Sag:
- Case1: When the conductor supports are at equal level.
- Sag = WL2/8T.
- Case2: When the conductor supports are at unequal level.
- Sag = WtL2/2T.
What factors affect sag?
Factors affecting the sag Conductor weight – Sag of the conductor is directly proportional to its weight. The weight of the conductors is increased due to ice loading. Span – Sag is directly proportional to the square of the span length. Longer span gives more sag.