The document discusses various types of conductor materials used in transmission lines, including AAC, AAAC, ACAR, ACCC, and ACSR, detailing their composition, properties, and applications. It highlights the advantages of each type, such as strength-to-weight ratio, corrosion resistance, and current-carrying capacity, along with typical usage scenarios. Additionally, it briefly describes elements of a transmission line, such as transformers, insulators, and protective devices.

1. Topic :
“COMPARISON OF
CONDUCTOR MATERIAL”

2. CONTENT
TYPES OF CONDUCTOR MATERIAL:
 AAC
 AAAC
 ACAR
 AACSR
 ACSS
 ACCC
 ACSR
Elements of transmission line.

3. AAC (All Aluminum Conductors)
 AAC is made up of one or more strands of hard drawn
1350 Aluminum Alloy.
 AAC has had limited use in transmission lines
 Good Corrosion Resistance
 High Conductivity to Weight Ratio.
 Moderate Strength
Typical Application
 Short spans where maximum current transfer is
required.
 These conductors are used in low, medium and high
voltage overhead lines.

4. AAAC (All Aluminum Alloy
Conductors)
 AAAC are made out of high strength Aluminum-
Magnesium-Silicon alloy.
 These conductors are designed to get better strength
to weight ratio, excellent sag-tension characteristics
when compared with ACSR.
 As compared to conventional ACSR, lighter weight,
comparable strength & current carrying capacity,
lower electrical losses and superior corrosion
resistance have given AAAC a wide acceptance in the
distribution and transmission lines.

5. Features
 High strength to weight ratio
 Better sag characteristics
 Improved electrical properties
 Excellent resistance to corrosion
 Specifications
 Higher Tensile Strength
 Excellent Corrosion Resistance
 Good Strength to Weight Ratio
 Lower Electrical Losses
 Moderate Conductivity –52.5% IACS
Typical Application
 Transmission and Distribution applications in corrosive
environments, ACSR replacement.

6. ACAR (Aluminum Conductor
Alloy Reinforced)
 Aluminum Conductor Alloy Reinforced (ACAR) is
formed by concentrically stranded Wires of Aluminum
on high strength Aluminum-Magnesium-Silicon
(AlMgSi) Alloy core.
 ACAR has got a better mechanical and electrical
properties as compared to an equivalent conductors of
ACSR,AAC or AAAC.
 These conductors are extensively used in overhead
transmission and distribution lines.

7. Features
Improved strength to weight ratio
Improved mechanical properties
Improved electrical properties
Excellent resistance to corrosion Specifications
Balance of Mechanical & Electrical
Excellent Corrosion Resistance
Variable Strength to Weight Ratio
Higher Conductivity than AAAC
Custom Designed, diameter equivalent to ACSR most
common.
Typical Application
Used for both transmission and distribution circuits.

8. ACCC – Aluminum Conductor
Composite Core
 Aluminum Conductor Composite Core (ACCC) is a concentrically stranded
conductor with one or more layers of trapezoidal shaped hard drawn and
annealed 1350-0 aluminum wires on a central core of high strength Carbon and
glass fiber composite.
 The ACCC Conductor uses a carbon fiber core that is 25% stronger and 60%
lighter than a traditional steel core.
 This allows with the help of trapezoidal shaped strands the ability to increase
the conductor’s aluminum content by over 28% without increasing the
conductor’s overall diameter or weight.
Features
 Excellent Sag properties
 Increased current carrying capacity
 High operating temperature
 Excellent strength to weight ratio
 Highly energy efficient.

9. ACSR (Aluminum Conductor Steel
Reinforced) Aluminum Conductor Steel Reinforced (ACSR) is concentrically stranded conductor with one or more layers of hard
drawn 1350-H19 aluminum wire on galvanized steel wire core.
 The core can be single wire or stranded depending on the size.
 Steel wire core is available in Class A ,B or Class C galvanization for corrosion protection.
 Additional corrosion protection is available through the application of grease to the core or infusion of the complete
cable with grease.
 The proportion of steel and aluminum in an ACSR conductor can be selected based on the mechanical strength and
current carrying capacity demanded by each application.
 ACSR conductors are recognized for their record of economy, dependability and favorable strength / weight ratio.
ACSR conductors combine the light weight and good conductivity of aluminum with the high tensile strength and
ruggedness of steel.
 In line design, this can provide higher tensions, less sag, and longer span lengths than obtainable with most other
types of overhead conductors.
 The steel strands are added as mechanical reinforcements.
 ACSR conductors are recognized for their record of economy, dependability and favorable strength / weight ratio.
 ACSR conductors combine the light weight and good conductivity of aluminum with the high tensile strength and
ruggedness of steel.
 In line design, this can provide higher tensions, less sag, and longer span lengths than obtainable with most other
types of overhead conductors.
 The steel strands are added as mechanical reinforcements.
 The cross sections above illustrate some common stranding.
 The steel core wires are protected from corrosion by galvanizing.
 The standard Class A zinc coating is usually adequate for ordinary environments.
 For greater protection, Class B and C galvanized coatings may be specified.
 The product is available with conductor corrosion resistant inhibitor treatment applied to the central steel component.

10.  Features
 High Tensile strength
 Better sag properties
 Economic design
 Suitable for remote applications involving long spans
 Good Ampacity
 Good Thermal Characteristics
 High Strength to Weight Ratio
 Low sag
 High Tensile Strength
 Typical Application
 Commonly used for both transmission and distribution circuits.
 Compact Aluminum Conductors, Steel Reinforced (ACSR) are used for
overhead distribution and transmission lines.

11. Elements of transmission line
Step up transformer
 This transformer is kept in the switch yard of the
generating station. This transformer steps up the generated
voltage to the voltage of transmission.
Line insulator
 Suspension and strain type porcelain insulators are used to
insulate the conductors from the ground.

12. Line support
Steel towers are used to support.
Conductors
Copper conductors were used for the transmission line but ACSR is
widely used due to increased price of copper.
Step down transformer
It is provided at the end of transmission line to step down primary
voltage to secondary voltage

13. Protective device –
 For protection of circuit breaker, earth switch,
lightening arresters, ground wires, etc. are used.
Regulators –
 Voltage regulators are provided for voltage regulation
and for improvement of power factor of line.

14. THANK YOU…