Which steel is used in ACSR conductor?
The standard steel core used for ACSR is galvanized steel, but zinc, 5% or 10% aluminium alloy and trace mischmetal coated steel (sometimes called by the trade-names Bezinal or Galfan) and aluminium-clad steel (sometimes called by the trade-name Alumoweld) are also available. Higher strength steel may also be used.
Why are steel strands used in ACSR conductor?
ACSR conductors have a higher diameter than AAC and AAAC due to their steel core, and due to this they can obtain a higher corona limit, giving the advantage for high voltage overhead lines. ACSR is also used for local distribution, suspended from wooden poles or other alternative methods.
How is ACSR conductor weight calculated?
Weight = Span “A” + Span “B” x W x 1.5 2 W = kg per m (lbs. per ft.) of conductor.
What is ACSR conductor & type?
These cables are formally known as All Aluminium Conductor (AAC), All Aluminium Alloy Conductor (AAAC) and Aluminium Conductor Steel Reinforced (ACSR). These overhead aluminium conductors are used as power transmission and distribution lines.
What is the general use of ACSR conductor?
ACSR conductor or aluminum conductor steel reinforced is used as bare overhead transmission and as primary and secondary disribution cable. ACSR is suitable for use in all practical spans on wood poles, transmission towers, and other structures because of its dependability and strength to weight ratio.
Why ACSR conductor is widely used?
This conductor has low strength as well as extra sag per span length as compared with any type. So, it is used at the distribution level. The conductivity of this conductor is somewhat better at the distribution level. The cost of both the AAC & ACSR conductors are the same.
What is the advantage of ACSR conductor?
ACSR conductors combine the light weight and good conductivity of aluminium 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.
What is MCM in conductor?
MCM is an abbreviation for thousands of circular mils, an old measurement of wire gauge. 1 MCM = 1 kcmil = 0.5067 square milimeters. A mil is 1/1000 inch. A wire 200 mils in diameter is 40 MCM.
What are the advantages of ACSR conductor?
How many types of ACSR are there?
Types of ACSR Conductors:
Sr. No. | Types of ACSR Conductors |
---|---|
#1. | All Aluminum Conductor – AAC |
#2. | Aluminum Conductor Aluminum Reinforce – ACAR |
#3. | All Aluminum Alloy Conductors – AAAC |
#4. | Aluminum Conductor Steel Reinforced – ACSR |
What are the limitations of Kelvin’s law?
Limitations of Kelvin’s law The limitations of this law are: It is quite difficult to estimate the energy loss in the line without actual load curves which are not available at the time of estimation. Interest and depreciation on the capital cost cannot be determined accurately.