What type of insulator will be used if the direction of the transmission line is to be changed?
Strain Type Insulator: The connection at the cross arm is such that insulator string is free to swing in any direction and can take up the position where mechanical stresses are minimum. Hence strain type of insulator will be used if the direction of the transmission line is to be changed.
What kind of insulator will you use in a 45kv transmission line?
Pin type insulators or pin insulators are popularly used in electric distribution systems up to 33 kV voltage level. They are secured on the cross arms of the pole to carry power lines. There is a groove on the upper end of a pin insulator for housing the conductor.
How do you find the insulator of a transmission line?
of discs=127/11=12. In a Power Transmission line more is the number of disc insulators higher will be the voltage rating of that transmission line. For example in case of 132 KV line a string of 11 disc insulators are connected. In case of 220 KV usually 16 disc insulators are used.
What is a strain insulator and where is it used?
A strain insulator is an electrical insulator that is designed to work in mechanical tension (strain), to withstand the pull of a suspended electrical wire or cable. They are used in overhead electrical wiring, to support radio antennas and overhead power lines.
Which type of insulator is used in 132kv transmission lines?
The insulators are used on 132 kV transmission lines is Disc type.
What is insulator and its types?
An insulator is one kind of material where the internal electric charge of this does not run freely; insufficient electric current will run through it in the power of an electric field. 2). What are the types of insulators are used in overhead transmission lines? They are pin, suspension, strain, shackle, and stay.
How does a strain insulator work?
A strain insulator is inserted between a pair of lengths of wire to isolate them from each other electrically while keeping a mechanical connection. Also, they are used where a wire joins a pole or tower to transmit the pull of the wire to the support with electrical insulation.
What are the types of insulator?
A look at some types of insulators and the conditions under which they are deployed.
- Pin-type insulators.
- Line post insulators.
- Suspension insulators.
- Strain insulators.
- Shackle insulators.
- Post insulators.
- Cap and pin insulators.
- Stay insulators.
What are 3 types of insulators?
List the Different Types of Insulators
- Suspension insulators.
- Pin insulators.
- Strain Insulators.
- Stay Insulators.
- Shackle Insulators.
What are 3 types of conductors?
Many materials are used to transmit electrical energy, but those most frequently specified for types of conductors are copper, copper-covered steel, high strength copper alloys, and aluminum.
What are 4 examples of insulators?
Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air.
What are the three types of insulators?
What kind of insulators are used for overhead transmission lines?
Various types of insulators used for overhead transmission and distribution lines are described below: Type # 1. Pin Insulators: This type was amongst the earliest designs, and used for supporting line conductors. It provides the most economic, simple and efficient method of conductor and bus-bar support for voltages up to and including 33 kV.
When do you use a pin insulator in a transmission line?
Pin insulator are Normally used up to 50 kV transmission line typically medium voltage transmission. Beyond operating voltage of 33 kV, the pin type insulators become too bulky and hence uneconomical. Replacement of pin insulators are very difficult.
What kind of insulator is used for a conductor?
Type # 1. Pin Insulators: This type was amongst the earliest designs, and used for supporting line conductors. It provides the most economic, simple and efficient method of conductor and bus-bar support for voltages up to and including 33 kV.
What kind of insulator is used in a distribution line?
Pin Insulator: Pin type insulators are used extensively in distribution lines. The voltage capacity of a single insulator disc is up to 11 kV. It is designed to have more mechanical strength. The distribution line can be adjusted horizontally or vertically.