AAC (All Aluminium Conductor)
This kind of conductor is composed by one or more layer of pure aluminium AA1350-H19, hard drawn. The conductivity is 61%IACS. This kind of conductor has a very low value of specific mechanical resistance and it’s used for short lengths (for example next to the stations) and not for long spans.
This kind of conductor has a very good resistance to corrosion and his modulus of elasticity is characterized by a law that consider the formation of the conductor (number of wires and layers).
AAAC (All Aluminium Alloy Conductor)
The material used on these conductor is an aluminium alloy AA-6101. It’s a special alloy with Magnesium and Silicium with an excellent conductivity value (the average is 53%IACS).
The specific mechanical resistance is higher than AAC conductor (more or less the double), maintaining a high corrosion resistance.
Compared to ACSR, this kind of conductor is characterized by a lower diameter and the overloads due to the wind pressure are lower.
AAAC All Aluminium Alloy Conductor Overhead Cable Applications
AAAC is suitable for overhead line for long span at medium voltage, high voltage and extrahigh
voltage, such as used in the area of mountain, hill,or the place where snow is heavy.
AAAC All Aluminium Alloy Conductor Overhead Cable Operating Temperature:
Max permissible continuous operating temperature of conductor shall not exceed 90°C.
AAAC All Aluminium Alloy Conductor Overhead Cable Standard :
ASTM B399, BS3242, DIN 48201,IEC61089, GB/T1179, AS 1531or other standards required by customers.
0.6/1KV Aluminum Conductor PE XLPE Insulated ABC Triplex Cable Specifications
a. Duplex Service Drop
Application:To supply 120 volt aerial service for temporary service at construction sites,outdoor or street lighting . For service at 600 volts or lower at a conductor temperature of 75°C maximum.
b. Triplex Service Drop
Application: To supply power from the utility’s lines to the consumer’s weather head. For service at 600 volt or less (phase to phase) at a conductor temperature of 75°C maximum for polyethylene insulation 90°C maximum for cross linked insulation.
c. Quadruplex Service Drop.
Used to supply 3 phase power, usually from a polemounted transformer, to the user’s service head where connection to the service entrance cable is made. To be used at voltages of 600 volts or less phase to phase and at conductor temperatures not to exceed 75°C for polyethylene insulation 90°C maximum for cross linked polyethylene(XLPE) insulated conductors.
ANSI/ICEA S-76-474, NF C 33-209, AS3560-1-2000, IEC 60228, and ect.
ACSR (Aluminium Conductor Steel Reinforced)
It’s a bimetallic conductors. The inner layers are composed by steel wires and the external layers are composed by hard-drawn aluminium AA1350-H19. The steel wires guarantee high mechanical performances.
This kind of conductor is used for medium and long spans thanks to the high value of specific mechanical resistance and good transport capacity.
The steel section will change to obtain the RTS requested. The modulus of elasticity of single steel wire is three time greater than an aluminium single wire. The final modulus of elasticity is defined by the composition of ACSR conductor (number of steel wires, number of aluminium wires).
The same behaviour will be found for the coefficient of linear expansion. The final value is determined by the single value of the material used and the modulus of elasticity and the section of the two components.
To guarantee the protection of steel, a thin zinc coating on the wire is carried out. The zinc coating is important to prevent the galvanic corrosion.
ACSR conductors has always been given high reliability thanks for the presence of steel that ensures the conductor large safety margins.