Conductors Used
in Transmission
EEE 1 – Power Systems:
Generation and Transmission
Engr. Harold M. Ticzon, RME
Conductors in Transmission Lines
Types of Conductors
➢ Solid
➢Hollow
➢Stranded
Conductors in Transmission Lines
Types of Aluminum Conductors (cont.)
➢ AAC (All Aluminum Conductor)
➢ AAAC (All Aluminum Alloy Conductor)
➢ ACSR (Aluminum Conductor Steel Reinforced)
➢ ACSS (Aluminum Conductor Steel Supported)
➢ ACCR (Aluminum Composite Core Reinforce)
➢ ACCC (Aluminum Carbon Composite Core)
Conductors in Transmission Lines
Types of Aluminum Conductors (cont.)
Conductors in Transmission Lines
➢ Solid Conductor
✓ Used in substation bus
✓ Suitable for short length bus
Conductors in Transmission Lines
➢ Solid Conductor
Conductors in Transmission Lines
➢ Hollow Conductor
✓ Used in substation bus
✓ Suitable for short length bus
✓ Better cooling rate
Conductors in Transmission Lines
➢ Hollow Conductor
Conductors in Transmission Lines
➢ Stranded Conductor
✓ Made up of multiple number of strands
✓ Easy to bend and roll
✓ Easy to transport
Conductors in Transmission Lines
➢ Stranded Conductor
Conductors in Transmission Lines
➢ AAC (All Aluminum Conductor)
✓ All strands of aluminum with purity of 99.78%
✓ High resistant to corrosion
✓ Installed in coastal areas
✓ Lowest tensile strength therefor permits low span
length
Conductors in Transmission Lines
➢ AAAC (All Aluminum Alloy Conductor)
✓ All strands of aluminum alloy
✓ Good tensile strength
✓ Allow more span length than AAC
✓ Installed at railway crossing, river crossing and hilly
areas
✓ Moderate resistant to corrosion
Conductors in Transmission Lines
➢ ACSR (Aluminum Conductor Steel Reinforced)
✓ Galvanized steel strands at core, surrounded by
aluminum strands
✓ High tensile strength
✓ Moderate expansion
✓ Higher span length than AAC and AAAC conductors
Conductors in Transmission Lines
➢ ACSR (Aluminum Conductor Steel Reinforced)
Conductors in Transmission Lines
➢ ACSS (Aluminum Conductor Steel Supported)
✓ Outer strands of Annealed or “0” temper aluminum
✓ Strength depends on steel strands
✓ Good working temperature without crossing sag limit
✓ More current carrying capacity than traditional
ACSR conductor.
Conductors in Transmission Lines
➢ ACSS (Aluminum Conductor Steel Supported)
Conductors in Transmission Lines
➢ ACCR (Aluminum Composite Core Reinforce)
✓ Outer strands, allows of aluminum zincoronium
✓ Core strands of advanced composite material.
✓ High
tensile
strength
and
low
coefficient
of
expansion
✓ High working temperature without crossing sag limit
✓ Double current carrying capacity than traditional
ACSR conductor.
Conductors in Transmission Lines
➢ ACCC (Aluminum Carbon Composite Core)
✓ Outer strands, allows of aluminum zincoronium
✓ Advanced composite core of glass, carbon and
epoxy resin
✓ High tensile strength
✓ High working temperature without sag limit
✓ Double current carrying capacity than traditional
ACSR conductor.
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