Why is overhead line fittings important?
Overhead lines basically refer to posts or columns that are used in supporting overhead public utilities. These utilities include overhead lines, overhead cables, streetlights, transformers, as well as fiber optic cables.
These overhead lines are required for insulating these utilities from touching the ground and also for ensuring that vehicles or people do not interrupt them or get affected by them.
Owing to the fact that these overhead lines ensure the safety of the people and also insulate various overhead utilities, they need to be made from materials that are durable and strong.
Let me explain each type of overhead line fitting one by one:
Yokelink string hardware is comprised of the following components:
Tension dead end clamp
Anchor shackle
Ball eye
Socket tongue
The tension dead end clamp is made of cast iron instead of aluminum alloy.
All of the components are hot dip galvanized steel of Min UTS 60KN for 33kv overhead line.
Suspension clamps were signed for use on Aluminium Conductor steel reinforced (ACSR) to hang the ACSR to the insulator fitting.
3 Bolt tension dead-end clamps for line 100mm2(ACSR and AAAC) conductor is for fastening of the M.V conductors to the tension insulators. The tension clamps are made of aluminum alloy of min ultimate tensile strength (U.T.S) 60KN. The U bolts, nuts, washers are hot dip galvanized steel. The cotter pins are stainless steel.
String hardware
When the single insulator connected into an insulator chain, Yokelink string hardware is used to joint one or two insulator chains.
The complete set which used to joint one single insulator chain is as below:
1.Ball hook
2.Ball socket
The dimensions of ball socket and ball eye test according to IEC60120.
1.Tension clamp
2.U BOLT
The string hardware which used to connect the insulator chains on to the cross arm or assemble the earth wire on the pole or tower is as below:
1.Yoke plate
2.U Clevis
What are Overhead Line Fittings?
Overhead line fittings are basically accessories that are used to attach one component of an overhead power line into another component or unit.
For instance, a fitting can connect the conductor to the tension strings.
Other fittings are attached to the insulator or even to the same conductor to perform a different role.