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Transmission lines are three-phase systems. There are three line conductors in a three-phase system. However, to reduce electric stress at higher voltages, these lines are frequently made up of 'bundled' conductors -so each line might have two, three, or four separate conductors. In addition, transmission towers usually carry separate circuits -i.e. separate three-phase circuits on opposite sides of each tower.
So, in the UK for example, a typical 400-kV transmission line will consist of two, separate, three-phase circuits suspended on each side of each tower, with each line consisting of four bundled conductors. That's 24 conductors.
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoA basic transmission line uses two parallel wires, which can be coaxial as in coaxial cable with an inner conductor and an outer sheath.
3-phase transmission lines use 3 wires, or 4 wires for low-voltage supply. Power transmission lines usually carry two 3-wire circuits, so there are 6 wires. On the highest-voltage lines multiple conductor are used with up to 4 wires bundled together in parallel with spacers.
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A wire is placed on the top of a transmission line to?
Ground wireAnswerIt's a (lightning) protection wire, designed to protect the line conductors from lightning strikes.
Is instead of neutral wire can you ground it by putting the wire in to earth if yes then why is extra wire used for neutral by eleminating netrual wire cost of transmission can be reduced?
Transmission lines do not use a neutral conductor, so your question isn't actually relevant. Neutral wires are only necessary where imbalance may be large, and under some conditions current may be flowing in the neutral. Under these conditions a low impedance path (the neutral wire) is more desireable than a high impedance path (the ground). In many overhead transmission lines, a fourth or fifth wire are placed above the current carrying conductors; these are shield wires (not neutral wires) and are used to minimize outages on the line due to lightning (the lightning will strike these instead of the phase wires, these will flash over to the structures and the energy will be shorted to ground without the line having to be removed from service). When you're dealing with things that cost ~$100,000 - 2M/mile, it may be worth the added expense of a shield wire to keep it in service as much as possible.
What is a lossless transmission line?
A lossless transmission line is when no energy is lost during transmission of energy from a particular source to destination by a certain material, ie. copper wire. In other words, this material that transmits energy, absorbs none of the energy transmitted. No energy is lost to the material during transfer of energy. It is like saying it is an absolutely perfect conductor having no resistance.
Hills hoist diagram?
Hill's Hoist is a type of clothes line used for drying clothes. It is an arrangement of wire or rope that rotates about a center rather than being a single long straight wire or rope. There are many variations in the design.
Why delta connections used in overhead transmission lines?
There are essentially 2 types of connections for a 3 phase AC transmission lines Star and Delta , Star is a 4 wire connection with each phase supplying potential with respect to a common ground wire , while delta is 3 wire connection with any single phase at one given time acting as a ground , for transmission reducing one wire makes a lot of cost difference hence it is favored
A wire is placed on the top of a transmission line to?
Ground wireAnswerIt's a (lightning) protection wire, designed to protect the line conductors from lightning strikes.
How many wire pairs in a CAT 5 cable are actually used for transmission and reception on a 10BASE-T network?
2 wire of pair
What is feeder wire?
The feed line is the cable or other transmission line that connects the antenna with the radio transmitter or receiver
Where is the transmission temperature sensor located at on a 1995 dodge ram 3500 diesel?
In the transmission cooler line. Two wire connector
What types of conductors are used in energy transmission?
Alluminium wire
Why is stranded wire used?
Multiple stranded cable is used in transmission lines because the high voltage potential of each line causes the electrons to tend to run only on the surface of the line due to repulsion. You want to maximize the surface area of the line, hence the multiple stranded lines, so that you maximize the efficiency of the line. In fact, some transmission lines have a non-conductive core, adding strength while maintaining low weight.
What types of wire are used in transmission lines?
Stranded aluminium, with a steel core.
How we calculate distance between two poles of overheads 11 KV Transmission line double wire?
Amio khujchi
How do you remove the quick connect on the transmission line?
there is a tool yo do it or you can use a very small screwdriver to pull the retaining wire out. be carefull not to bend it so much that it permanitly distorts. then the line just pulls out. all the wire does is hold the line in place there is a bulge in the line that it catches on then an o-ring that makes the seal. one last note if you have to replace the transmission fluid use atf+4 or you will destroy it.
Does a 1000 watt single pole switch require different wiring than a 600 watt switch?
not unless the wire is exceptionally small, if if is 12 AWG or even 14 AWG you will be ok unless you are using it for a transmission line (unlikely) The smallest wire you can use safely is a 21 AWG wire but that's not a wire used in the walls
When 12 channel carrier system used on open wire line is known as?
open wire J
Is instead of neutral wire can you ground it by putting the wire in to earth if yes then why is extra wire used for neutral by eleminating netrual wire cost of transmission can be reduced?
Transmission lines do not use a neutral conductor, so your question isn't actually relevant. Neutral wires are only necessary where imbalance may be large, and under some conditions current may be flowing in the neutral. Under these conditions a low impedance path (the neutral wire) is more desireable than a high impedance path (the ground). In many overhead transmission lines, a fourth or fifth wire are placed above the current carrying conductors; these are shield wires (not neutral wires) and are used to minimize outages on the line due to lightning (the lightning will strike these instead of the phase wires, these will flash over to the structures and the energy will be shorted to ground without the line having to be removed from service). When you're dealing with things that cost ~$100,000 - 2M/mile, it may be worth the added expense of a shield wire to keep it in service as much as possible.
