What are the two main types of support for overhead lines?

What are the two main types of support for overhead lines?

Concrete Poles for Overhead Electric Lines The concrete poles used for supporting overhead electric lines are of two types. They are RCC type and PCC type. Presently, PCC type electric poles are widely used for supporting 11KV and 400/230V electric lines. Sometimes, PCC type electric poles are also used for 33kv lines.

What are the functions of line support?

Line support plays a major role in power transmission. It kept the proper spacing between the conductors and maintained the conductor at the prescribed distance from its ground parts. It also maintained the specified ground clearance. These clearances are decided by electrical and mechanical considerations.

Which line supports are used for long distance transmission at higher voltages?

The lower current that accompanies high voltage transmission reduces resistance in the conductors as electricity flows along the cables. This means that thin, light-weight wires can be used in long-distance transmission.

Which support for over head transmission line has the least life?

Wooden poles: It is one of the cheapest types of line supports and used for lines where spans are short, and tension is low. It has very less life. Concrete poles: Concrete pole gave greater strength and used in place of a wood pole.

What are the main components of overhead lines?

An overhead line consists of conductors and ground wires, towers, insulation, hardware, and foundations. The transmission line conductors are specialized, with large cross section and relatively few strands.

What are the types of insulators?

The five types of insulators are:

• Suspension insulators.
• Pin insulators.
• Strain Insulators.
• Stay Insulators.
• Shackle Insulators.

Which is the important property of line support?

In general, the line supports should have the following properties : High mechanical strength to withstand the weight of conductors and wind loads etc. Light in weight without the loss of mechanical strength. Cheap in cost and economical to maintain.

What are the four types of line supports?

Different types of line supports used for transmission lines…

• RCC and PCC poles.
• steel towers.
• steel poles.
• wooden poles, steel poles, RCC and PCC poles and steel towers.

Which life of pole is longer than other?

poles are used in 11 KV and 400/230 volt system to a large scale, apart from this, we also use PCC poles in 33KV H.T. Line. This type of poles is costlier than a wooden pole but cheaper than a steel pole. This kind of poles has a longer life, and the maintenance cost is negligible.

Are transmission lines AC or DC?

System. Most transmission lines are high-voltage three-phase alternating current (AC), although single phase AC is sometimes used in railway electrification systems. High-voltage direct-current (HVDC) technology is used for greater efficiency over very long distances (typically hundreds of miles).

What are 3 types of conductors?

Of all the materials, the top three are silver, copper and aluminum. Silver is known to be the best conductor of electricity but it is not widely used for economic reasons. It is only used for special equipment like satellites. Copper, though not as high as silver, also has high conductivity.

What are 4 types of insulators?

Types of Insulators

• Pin Insulator.
• Suspension Insulator.
• Strain Insulator.
• Shackle Insulator.
• Post-Insulator.
• Stay Insulator.
• Disc Insulator.

What are the different types of support used in structures?

In this article, you will learn about different types of support used in structure. There are basically three types of support and these are roller, pinned, and fixed support. There is a fourth support also called as simple support, it is generally not used in structures. Every support has its own field of application.

What are the different types of IT support?

The different names for IT support might be confusing. Infrastructure is the base that supports an organization or its systems. Physical and computer-generated resources make a data center. These data centers support the processing and analysis of the data. IT Infra may be distributed or integrated with a data center.

Why is line support important in power transmission?

The line support plays a major role in power transmission. It kept the proper spacing between the conductors and maintained the conductor at the prescribed distance from its ground parts. It also maintained the specified ground clearance. These clearances are decided by the electrical and mechanical considerations.

What are the different types of pipe support?

Different Types of Special Pipe Support: Spring Hangers/Can Type Supports Rigid/Rod Hangers Rigid Struts Sway Braces Hydraulic and Mechanical Snubbers Sliding Supports Related Blogs