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The category features all the topics relevant to overhead conductors of power transmission systems
ACSR means Aluminum Conductor Steel Reinforced. We mostly choose ACSR for high‐voltage overhead transmission lines. An ACSR consists mainly of two parts. It has multiple layers of pure aluminum strands for carrying current. The purity of aluminum is 99.5%. It also has a central core of galvanized steel. This core provides tensile strength to the … Read more
Power Transmission Challenges The main drawback of conventional ACSR (Aluminum Conductor Steel Reinforced) conductors is their limited thermal capacity. These conductors are typically designed to operate at a maximum temperature of 75°C. Although some modern variants can withstand up to 85°C, exceeding these temperature limits by increasing current leads to higher thermal expansion, which in … Read more
TACSR TACSR is the simplest form of HTLS variants. It uses galvanized steel strands as reinforcement, similar to a simple ACSR conductor. However, it mainly differs in the current-carrying part of the conductor. Constructionally, a TACSR is similar to an ACSR conductor. It uses thermal-resistant aluminium alloy strands instead of normal hard-drawn pure aluminium. It … Read more
The electricity demand is increasing day by day. On the other hand, the land available for constructing new transmission lines is reducing continuously. Due to growing legal complexities, identifying or surveying a suitable transmission corridor has become a significant challenge. Therefore, the only practical solution available is to transmit more power through the existing transmission … Read more
TACSR stands for “Thermal Resistant Aluminium Alloy Conductor Steel Reinforced”. It is a type of HTLS conductor. TACSR can carry higher current than conventional ACSR conductors. This is because its operating temperature is much higher than that of ACSR. However, it maintains similar mechanical practices with higher ampacity. Power utilities use TACSR mainly for uprating … Read more
The electricity demand increasing tremendously from last few decades. The increasing demand of lands and few government policies are the constraints in expanding transmission infrastructure. Hence there is no way other than increasing the ampacity of the existing transmission networks. This increases the need for High-Temperature Low-Sag (HTLS) conductors. Among the various HTLS conductors, INVAR … Read more
A Gap-type HTLS conductor is a special type HTLS conductor. It exhibits a separate high strength low elongation steel core surrounded by layers of thermal resistant aluminum alloy strands. The typicality of a gap type HTLS conductor is, it maintains a deliberate annular gap between the core and the first layer of aluminum alloy strands. … Read more
The full form of ACCC is Aluminium Conductor Composite Core. This is one of the most advanced HTLS technologies. Here, instead of a stranded steel core, we use a reinforced core made of carbon fiber. Sometimes, we also use glass fiber for reinforcement. Construction of ACCC The main advantage of ACCC among other HTLS conductors … Read more
Skin effect is a phenomenon that occurs in conductors. It mainly occurs while a conductor carries alternating current. Actually, when an alternating current tries to flow through the outer layer of the conductor. The inner portion of the conductor carries much lower current than the outer surface. As a result, the current distribution across the … Read more
Type Tests as per IS 398 Part-5 Routine Tests on ACSR Conductors These tests are performed as per IS 398 Part-5 Acceptance Tests on ACSR Conductors as per IS 398 Part-5