Effect of temperature rise in overhead lines is to________.
increase the sag decrease the tension
decrease the
sag and increase the tension
increase both
the sag and tension
decrease both the sag and tension
increase the sag decrease the tension
Due to temperature rise in overhead line, sag is increased and tension is decrease. Consider an overhead transmission line separated between the two supports A and B as shown below.
When the
conductor (transmission-line) is supported in fashion it will sag or dip under
its own weight.
The distance
between the adjacent supporting tower is called the span.
The
difference in levels between point of support and the lowest point on the conductor
is called sag. It is denoted by S.
The following factors affect the sag :
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