High Tension Cables
These types of cables are basically made for carrying high voltages.ht cables having a range up to 3300v or 33kv. the covering of ht cables is very hard, and protective .armouring might be round in shape or might be flat for insulation protective is used like polyvinyl chloride PVC
or cross-linked polyethylene (XLPE ) most of the ht cables are made up of xlpe coating, theses cables provide high insulation because it carries High current which reflects a lot of heat to protect wires from short-circuits we have to give good insulation to it.
In ht cables, the conductors are aluminum and copper as we know aluminum is cheaper in comparison to copper so the cost of cablesfacultate according to the material .ht cables have 1 to 3 no of cores.
Ht cables are used in those areas where they have a voltage range of more than1.1kv
The best quality of ht cables is they retain temperature, are moist, and are highly resistant to vibration. Selection of the right type of cable is important for the good and continuous functioning of any electrical equipment as simultaneously the working of equipment is dependent on the working of cables. The
correct choice of cable ensures trouble-free Performance and also optimizes The cost of equipment And installation ANd other operations as well.
Modern cables have a very simple design. Of a few parts the conductors, the shield, The insulation, the metallic shield, and Jacket's other layers can include water-blocking tapes, rip cords and armor wires, and copper or aluminum wire.
ADVANTAGES AND DISADVANTAGES OF HIGH VOLTAGE INSULATED OVERHEAD LINES OF 10KV AND BELOW
OVERHEAD LINE ADVANTAGES AND DISADVANTAGES
The use of insulated wires is preferred in carrying current over a long-range, as we know there's a lot of congestion of electric cables on road, to overcome this congestion underwiring is used for the flow of electricity, in carrying current for long distance with voltages it produces a heating effect but due protective insulation of wires Or ht cables it doesn't create any short-circuit or harm.
The main advantages of high voltage insulated overhead lines compared to those erected with bare conduct
1. It is safe for personal shock or from phase-to-phase short circuits caused by foreign objects, reduces the number of power outages during the operation of the combined line, reduces the maintenance workload, and improves the line. Power utilization rate;
2. It helps on large
scale with urban construction and greening work, reducing the number of trees
trimmed along the line;
3. it helps in
beautifying the city the cables are
underground and protected which city becomes more beautiful
4. Better
facilities are available on Time and everywhere electricity can reach to
everyone.
5. The space covered by the cables on poles gets reduced and the
overhead lines are easily traversed in the narrow passages. The line corridor
is reduced, and the line corridor can be reduced by half compared with the
bare line;
6. With the help of
this it saves a lot of power which occurs during flowing the current, it also helps in reducing voltage loss, line reactance only takes one-third of ordinary bare wire line reactance;
7. It reduces the
corrosion effect on wires because they are fully insulated
8. It requires
less gravitational force because they are very close to the earth reducing the investment of the fittings, and reducing the labor intensity when the workers are
wired
9. We have done fewer insulation practices, labor costs reduced, we can maintain easily circuit, and congestion is reduced.