Define factor of safety of insulator
Answers
Answered by
0
Overhead line insulators
It is obvious that if overhead power lines are not properly insulated from their support poles/towers, the current will flow towards the ground through the poles/towers which also become hazardous. Of course, the power line won't even work in that case! Hence, overhead power lines are always supported on insulators mounted on their support poles/towers.
Overhead line insulators should have the following properties:
high mechanical strength in order to withstand the conductor load, wind load etc.
high electrical resistance in order to minimize the leakage currents
high relative permittivity of insulating material so that the dielectric strength is high
high ratio of puncture strength to flashover
hope it helps
Similar questions