Sterlite® Super Thermal Alloy Conductor Invar Reinforced (STACIR) conductor has outer layers composed of Super Thermal Aluminium (STAL) alloy wires that can operate up to 210°C (410°F). The inner core is composed of aluminium clad INVAR wires. INVAR is a metal alloy with 36% Ni in steel.
Sterlite® Super Thermal Alloy Conductor Invar Reinforced (STACIR)
STACIR/AW conductors are suited for re-conductoring applications. The capacity of existing transmission line can be enhanced by simply replacing the existing conductor without any modification to the tower.
● Can carry 100% more current than that of ACSR of the same size, while maximum sag and maximum working tension remain the same as that of ACSR.
● No modification or reinforcement is required to existing towers for uprating transmission and distribution lines.
|PROPERTIES||STACIR (ACSR MOOSE EQUIVALENT)||STACIR ( ACSR ZEBRA EQUIVALENT)||STACIR (ACSR PANTHER EQUIVALENT)|
|Typical factors||3.53 mm||0.1390 in||3.18 mm||0.1252 in||3.00 mm||0.1181 in|
|Reference specifications||IEC 62004||IEC 62004||IEC 62004|
|Total cross section area||597.00 mm2||0.9254 in2||484.50 mm2||0.751 in2||261.50 mm2||0.4054 in2|
|Conductive wire||Al Zr AT3||Al Zr AT3||Al Zr AT1|
|Core wire||Aluminium clad Invar||Aluminium clad Invar||Aluminium clad Invar|
|Conductor diameter||31.77mm||1.2508 in||28.62 mm||1.1268 in||21.00 mm||0.8268 in|
|Weight||1993 kg/km||1339.2 lbs/mile||1582 kg/km||1063.1 lbs/mile||939 kg/km||631 lbs/mile|
|Ultimate tensile strength||14641 kg||32277.84 lbs||11968 kg||26384.89 lbs||8436 kg||18598.17 lbs|
|DC resistance at 20°C temperature||0.06 Ω/km||0.09 Ω/mile||0.07 Ω/km||0.11 Ω/mile||0.13 Ω/km||0.21 Ω/mile|
|Maximum operating temperature||210°C||410°F||210°C||410°F||210°C||410°F|
|Current carrying capacity at maximum operating temperature||1871 Amp||1626 Amp||1040 Amp|
Assumptions: Ampacity is calculated based on, 45°C (113°F) ambient temperature, 0.6 m/s wind velocity, 0.5 as coefficient of solar absorption, 0.6 as coefficient of emmisivity and 1200 wt/sqm coefficient for solar radiation, at sea level.