Why insulator is used in transmission line?
An insulator gives support to the overhead line conductors on the poles to prevent the current flow toward earth. In the transmission lines, it plays an essential role in its operation. The designing of an insulator can be done using different materials like rubber, wood, plastic, mica, etc.
What insulators are used in transmission lines?
Shackle insulator cons
Insulator | Voltage capacity | Use |
---|---|---|
Pin insulator | < 33 kV | Distribution system |
Post insulator | 11 kV to 765 kV | Substation system |
Suspension insulator | > 11 kV (High) | Transmission system |
Shackle insulator | < 33 kV | Distribution system |
What is purpose of insulator?
Electrical insulators are used to hold conductors in position, separating them from one another and from surrounding structures. They form a barrier between energized parts of an electric circuit and confine the flow of current to wires or other conducting paths as desired.
What are the five insulators?
Insulators:
- glass.
- rubber.
- oil.
- asphalt.
- fiberglass.
- porcelain.
- ceramic.
- quartz.
What are the two uses of insulator?
Insulators work as protectors. They may protect heat, sound and the passage of electricity. Thermal insulators, sound insulators and electrical insulators are used for various reasons, from keeping houses warm to protecting electrical wires and soundproofing rooms.
What is example of insulator?
Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air.
How many insulators are in 11kV line?
In a 11 kV system we generally use one part type insulator where whole pin insulator is one piece of properly shaped porcelain or glass. As the leakage path of insulator is through its surface, it is desirable to increase the vertical length of the insulator surface area for lengthening leakage path.
Why are insulators used in transmission lines?
Insulators are used in transmission lines to separate or support electrical conductors on high voltage electricity supply networks, insulators provide insulation to the power conductor from the ground
What are good insulators for electricity?
Glass, paper, Teflon and rubber are good insulators of electricity. An insulator is a substance that allows very little electric current to flow through it. There is no perfect insulator, but materials that offer a high degree of resistance to the flow of electrons are good insulators.
What is overhead transmission line?
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles.
What is a station post insulator?
With station post insulators that feature our semiconducting glaze, you almost never have to worry about salt deposits or corona discharges. They feature: Improved contamination performance. Improved RIV performance. Solid-core construction. Puncture proof body. Consistent mechanical strength. Long lasting durability.