Conductive and conductive materials

           

                              Conductive and conductive materials.

Electric Power Transmission and Updated for the cable or overhead line distribution may be applied to both systems. The installment cost, considering the remote area of ​​all protected from the load center line insulation Power Transmission priority given to the overhead line.
Updated some of the accomplishments and benefits of overhead cabals very difficult to know. Transmission and distribution some kinds conductor without being used, namely: -
• Copper
• Aluminium.
• steel cored alumumium or A.C.S.R.
• Galvanized steel conductor
In addition, there are also such as phosphorous, bronze, copper clad, cadmium copper  etc.
Materials conductor properties: -
• High power Conductive  be prevented, which is relatively low.
• mechanical stress will be tensile strength should be high enough.
• It may be difficult and flexible. Should not be brittle.
• High short circuit produced by the additional heat that must be high melting point may be facing.
• the air pressure and the wire size should have sag  sustainable levels.
• If the conductive material is black.
• Humidity and moisture and rust proof  must be required.
• The sale will be sustainable and scraps.

But more than-

              Specific resistance.

              Specific weight.

              Temperature co-efficient of resistances.

              Young’s modulus.

              Ultimate tensile strength.
Copper, Aluminium, A.C.S.R. Comparative characteristics of cable: -
1.Copper: -

• Hard-drain copper conductor tensile strength too.
• It is less lustrous than conductive. So Support on the low pressure.
• Life span  much more.
• The weight of more than Aluminium.
2. Aluminium: -
• Lighter weight and price are cheaper than copper.
• copper and less than conductive someone’s resistance  1.7 times more fat and pecan difficult.
• Short circuit in the cable melting point less likely to have lost.
• Copper or A.C.S.R. tension bearing capacity of less than.
• provides a high voltage power produced in corona loser less than copper.
3. A.C.S.R (Aluminium conductor with steel Re-inforcedment): -
• This is relatively thick compared to other cable resistance the same.
• Corona loss is less than the bodies. However, strong support is needed for a particular Span.
• Weight of tensile more strength.
• Sag less use of long span. The tower height is reduced proportionally.
4. Galvanized steel conductor: -
• The conductive less.
• Internal reactance more.
• Current and Hystersis Loss for more than Eddy current.
• wet weather rust on the wire. This cable is not used.
             

N.B:- Please do not forget to comment…

Head Over to Electric Line Support

Electric power of the conductive wire through the production center to be a long long way in 250 k.m. than high way patrol at the receiver end of the back, the only vehicles on-line support. Transport and variability, the location of the line to support it wood, concrete, or steel towers may be.

 Main components part of the overhead line:

1. Support:- Pole, Tower, etc., which depends on the size and height of the processing voltage. Safe distance from the ground up Supports conductor hold. Generally, the wood in the poll - Type I - Type-H - the type. Steel poll in tubular type, rail poll, etc. role steel joint. Poll of the concrete R.C.C. Poll, P.C.C. Use the poll. And latish steel tower. Wooden poll for the L.T. Distribution   line 400 V / 300 V are used to 11KV line. This is very useful for distance  up to

50 m span. Polls are around 6m-15m. Steel poll up to the L.T. line 11 KV -33KV line. A long span of 160 m up to 132 KV transmission line for the rest of the type used in the poll. Support line is replaced by criteria: - 

a. High mechanical stress bearing capacity will be, 

b. will be much cheaper price, maintenance costs will be lower,

c. and lighter weight will be error free, 

d. will be the long-standing, should be interesting things to see.

2. Cross - arm and clamp:- angle sections of steel or wood with a cross bolt nuts arms poll of the head is blocked. Cross - the arm with the clasp.

3. Insulator:- china or glass of varying voltage generated insulators  behead the systems, pin type , shackle or spool insulator, strain, suspension insulator , Egg or guy insulator  etc. are of various types. It is generally conductor - to - conductor, conductor - to - Earth insulation provide.

4. Guys and stays:- Stays poll over his use of the guys and the Insulator.

5. Conductor:- copper, Aluminium, or A.C.S.R Through a line of electric coductor power one place to another must be in place.

6.  Lighting  arrestors:- Lightning induced additional voltage  to protect the line.

7.  Fuses and Isolating switches: They are different parts of the overhead system, the network can be isolated if necessary.

8. Continuous earth wire:- Tower or the poll is over the top of the line along the entire Earth trait. The unusual circumstances created by the additional voltage  Discharge line to protect the soil easily.

9. Guard wire:- When a power line, telephone or telegraph line crossing, and then find the line that connects the top and bottom of the Earth Wire is used to guard.

10. Bird guards:- it is created on the side of the saw teeth as long ebonite basest plate, which is a cross - is prevented in the presence of arm insulator. The birds of hokier cross - in the arm and conductor Flash - Over in the  out .

11. Vibration damper:- vibration damper  dimple shape in the presence of these lines connect to the poll, that tremble down the line. The air flow through the conductor is conductor vibration, the vibration is. The pressure on the conductor in the conductor can be read off tear. The best way to protect against damage from vibration induced arms rod is used. Bates is one of the Stock Bridge damper .The shaking intensity is used to prevent damper betas.

12. Jumpers:- jumpers connection is connected via the two conductor. Nevertheless, as part of the phase plate, Danger plate, Barbed wire, Cradle guard. Etc.

Q. What is the cradle guard ? Where is the use?

Ans:- Head over to his line - where the roads, rail lines, or building on the trail, there are safety devices used not only for safety. After his off tear it down at all, so that people do not readit, so that the bottom line is earthed cradle Guard.

Telecommunication lines in the repair and look after all the time. The line between Telecommunication riper  security guard earthed cradle guard used.