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Overhead lines are uninsulated, as they depend upon the air to provide insulation. However, they must still be insulated from the towers or poles from which they are suspended. This insulation is provided using glass or ceramic insulators. The greater the line voltage, the longer the ceramic insulator, or the greater the number of glass insulator 'dishes'.
What else can I help you with?
How many suspenssion type insulation used in 66kv transmission line?
one insulator unit can bare 11kV. such that 66kV tx line needs 6 insulator units.
What is electrical resistance used in glass for?
High voltage transmission line insulator are also made of glass.
What is the difference between overhead transmission line and under ground transmission line?
Um. One is hung above your head on telephone poles and the other is ran underground in conduit? Unless you meant something else? Also burying cable costs ~10 times as much for transmission lines as overhead. It also usually has a lower power carrying capability, since it cannot dissipate heat as readily as an overhead conductor.
What is the purpose of having a low impedance for transmission lines?
in order to reduce the transmission line losses we need low impedance...Low impedance also improves power transfer capacity of the line..
What is a dampner on a transmission line?
Dampers are streamlined weights attached to transmission-line conductors, close to where the conductors are secured from insulators. As the name suggests, their purpose is to 'damp' any vibrations induced into the conductors by wind.
What type of insulator use for transmission line?
answer
Why we can't send current or voltage without transmission line?
Well, there is no way of doing it without an overhead or underground transmission line.
What are the characteristics of an overhead line insulator?
The insulator has to have the insulation factor of the primary line that is connected to it. It has to have a design that will not allow moisture to pool around it. The design also should include a shape that will make it self cleaning.
How many suspenssion type insulation used in 66kv transmission line?
one insulator unit can bare 11kV. such that 66kV tx line needs 6 insulator units.
What is electrical resistance used in glass for?
High voltage transmission line insulator are also made of glass.
How can move the train with one transmission line?
There are always two. Live in the overhead line and neutral/earth in the tracks in contact with the wheels.
What is the difference between overhead transmission line and under ground transmission line?
Um. One is hung above your head on telephone poles and the other is ran underground in conduit? Unless you meant something else? Also burying cable costs ~10 times as much for transmission lines as overhead. It also usually has a lower power carrying capability, since it cannot dissipate heat as readily as an overhead conductor.
What is an overhead 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.
Is three phase transmission line is example of bundle conductor?
'Bundled' conductors describe a line in which two or more conductors are supported from the same insulator chain. In the UK, 275-kV transmission lines typically use two conductors per line, and 400-kV transmission lines typically use four conductors per line. The purpose of bundling conductors is to spread the electric stress on the conductors (e.g. for four conductors, the same amount of electric flux will be 'shared' between the four conductors, rather than concentrated on the surface of one conductor).
What are the components used for trnsmission lines?
There are no component is used in transmission line . the used things are- conductors for transmitting power to one place to another place. insulator for separate these conductors and some other basic things are required necessary for net of transmission line.
What is symbol for insulator?
The symbol for an insulator is typically represented as a zigzag line.
Describe the various methods of reducing corona effect in an overhead transmission line?
1. by increasing conductor size. 2. by increasing conductor spacing.
