Protection fitting,vibration damper,preformed armour rod
Protection fitting: vibration damper and preformed armour rod:
Protection fitting is used to restrain vibration of the conductor and ground wire of overhead transmission lines. Protection fitting is also used to grade and to shield the insulator string of 330kv and above.
vibration damper preformed armour rod
Protection fitting mainly includes the following types:
Preformed armour rod
Stockbridge vibration damper
Spacers, spacer damper
Grading and shielding ring
Guy grip dead end
Side tie and distribute tie
Description of Preformed armour rod, Stockbridge vibration damper, Side tie and distribute tie:
Preformed armour rod is used to prevent the damage on the suspension point of the overhead transmission power lines. Preformed armour rod is mounted into the clamp, and therefore increases the rigid around the clamp. Preformed armour rod can restrain the extrusion stress and abrasion caused by the conductor vibration, and then improves conductor resistance to vibration capability.
Stockbridge vibration damper is just some iron bars. Since it hanging on the suspension point, vibration damper can absorb or attenuate vibration energy, change the transmission line swing frequency and prevent vibration or line dancing. Vibration damper is used to eliminate line vibration caused by wind it itself.
Side tie and distribute tie is used to tie up the conductor to the pin type insulator. Side tie is used to attach to the high voltage insulator neck groove, and distribute tie is used to attach to the pin insulator top groove.