Overhead Power Line Accessories
Most of the electricity generated by power plants is transmitted and distributed overhead lines. The transmission and distribution of power through overhead lines uses conductors supported on towers or poles with appropriate spacing between them. This spacing is provided to avoid discharges between conductors by increasing insulation. Compared to underground transmission and distribution lines, overhead lines are much cheaper.
For transmitting electricity at higher voltages over long distances, overhead lines are the best choice. For the same power transmission, underground cables require more insulation costs and conductor sizes. Overhead costs are much lower and overhead lines are easy to maintain.
However, there are some disadvantages to using overhead lines, for example, they are subject to uncertain weather conditions that reduce overall efficiency, conductors can be damaged by high winds or fallen trees, causing external interference, faulty short circuits due to lightning or faults, etc. However, these drawbacks can be overcome by using appropriate safety factors. Let’s look at the various components of overhead lines in a power system.

Components of overhead lines

ACSR Conductor

Conductors

Conductors play an important role in overhead transmission and distribution lines, which carry electricity from the generating station to the receiving end and then to the consumer. A major part of the total capital is invested in the conductors. Therefore, the choice of conductor material and the size of the conductor should be selected appropriately. Depending on the current to be carried and the span of the line, the composition of materials such as copper, aluminum or ACSR is selected.

Polymer Disc Insulator

Polymer Disc Insulator

Polymer Disc insulator ,Composite Disc insulator, Suspension insulator, Long rod insulator are different names of Disc insulator.
11kv 45kN Polymer Disc Insulator B&S type.
11kV 70kN Polymer Disc insulator B&S type .
11kV 90kN Polymer Disc Insulator B&S type

Post Insulator

The Post Insulator has been specifically designed so as to withstand the demands made upon them by extremes in climatic conditions and weather fluctuations. The Post Insulator flanges are sharp and narrow which results in shape and creepage distance most suitable for countering problems of pollution. Even strong arcs fail to break the cast resin Post Insulators. Scars in the surface caused by flash-over can be easily made good by smoothing and cleaning the marks and rubbing a thin layer of silicone paste into the surface. This treatment does not decrease the flashover strength of the insulator. The cast resin Post Insulators also have a high resistance to chemicals.

Isolator

11kV Porcelain Isolator Double Stack without Earth Switch
11kV Porcelain Isolator Double Stack Turn and Twist type without Earth Switch
11kV Porcelain Isolator Double Stack Turn & Twist type with Earth Switch

Lightning Arrester

lightning arrester also known as lightning arrestor) is a device used electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal. When a lightning surge (or switching surge, which is very similar) travels along the power line to the arrester, the current from the surge is diverted through the arrester, in most cases to earth.

Drop Out Fuse Unit

Dropout Fuse Unit that are fuse carriers of fiberglass tube with heavily tinned non-ferrous metal parts at both the ends. The brush type phosphorous bronze contacts ensure high-pressure multi-line connection, wiping and cleaning action. The dropout units are widely used for system protection as a secondary back-up against troubles or faults. The dropout units offered by us can be availed at industry leading prices. Please leave the inquiry with product specification (kV of system, Kn, T&C or B&S Type) (optional Creepage distance, Length of insulator)

Air Break Switch

11kv 400a polymer air break switch 6 insulator, 11kv 400amp gang operated air break switch, 33kv polymer air break switch 9 insulator, 11kv 400a porcelain gang operated air break switch 9 insulator, 11kv 400a polymer air break switch 9 insulator and 33kv 400a polymer gang operated air break switch 6 insulator.

Polymer Pin Insulator

Polymer Pin insulator, Composite Pin insulator, Silicon Pin Insulators are different names for Polymer Pin insulator.These are used in Power Distribution System for 11kv and 33kv. The bottom part of the pin insulator i.e spindle is attached to the pole and the head of the insulator holds the conductor.

Disc Fitting 3 Bolt For Acsr Dog

Disc Fitting & Hardware

Disc Fitting 3 Bolt For Acsr Dog. B&S Disc Single Bolt Hardware fitting Tension type . Disc Fitting For Acsr Rabbit

Horn Gap Fuse

Horn Gap Fuse

11kV Porcelain Horn Gap Fuse. 11kV Polymer Horn Gap Fuse

Suspension Clamp For AB Cable

Suspension Clamp For AB Cable

Suspension Clamp For AB Cable .
Dead End Clamp

Various types of conductor materials used for overhead lines

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