ACSR Twisted Pair (TP) Conductors
ACSR Twisted Pair (TP) cable consists of a twisted pair of aluminum steel reinforced conductors that are wound in a left hand direction on 9 foot intervals in accordance with ASTM B-911. The twisted conductor construction has over three decades of proven field experience in reducing line galloping due to the formation of ice on the conductor. ACSR TP conductors have been shown as the most cost effective means to mitigate galloping, Aeolian vibration, and sub-conductor oscillation in transmission lines.
Features
- The constantly changing profile of the figure eight shape provided by ACSR TP conductors disrupt the lift forces that cause violent elliptical motion of single conductors under ice formation.
- ACSR twisted pair conductors also exhibit a rocking motion under wind conditions that translate vibration energy into heat, thus providing a self damping mechanism.
- The inherent self damping mechanism of ACSR TP allows the conductor to be installed per NEC Code limits, therefore reducing sag and structure height or allowing for longer ruling spans.
- ACSR TP conductors are manufactured in accordance with ASTM B-911 Standard Specification for ACSR Twisted Pair Conductor (ACSR/TP) and ASTM B-232 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors Steel Reinforced (ACSR).