2/22/2017 Why are Bundled Conductors used in Transmission Lines? | Electrical Concepts Search … Search Electrical Concepts Home Basics Electrical Electrical Machines Power System Analysis Electronics Interview Questions LATEST POSTS Why are Bundled Conductors Load Factor, Diversity Factor and Capacity Factor used in Transmission Lines? May 27, 2016 VRLA Battery – Valve Regulated Lead Acid Battery Torque Equation in Share Electrodynamometer Instruments Electrodynamic Type Instrument – Construction and Working Principle Symmetrical Fault and Short Circuit kVA Tinned Copper Wire and Its Benets Why Copper Wire is Preferred than Aluminum in Control Cable? SF6 Circuit Breaker – Construction, Working Principle and Types What is Bundle Conductor? Resistance Switching in A bundle conductor is a conductor made up of two or more sub Circuit Breaker conductors and is used as one phase conductor. For voltages Current Chopping in Circuit greater than 220 kV it is preferable to use more than one Breaker conductor per phase which is known as Bundle conductor. RECOMMENDED BOOKS http://electricalbaba.com/whyarebundledconductorsusedintransmissionlines/ 1/4 so reactance of conductors decreases. Thereby to transmit maximum power. Bundle conductor are used in Transmission line. so reduced voltage drop in conductors.com/whyarebundledconductorsusedintransmissionlines/ 2/4 . I am listing some important factors: Reduced Reactance: Due to bundling of conductors the self GMD of the conductors is increased.2/22/2017 BOOKS Why are Bundled Conductors used in Transmission Lines? | Electrical Concepts Bundle Conductor MY FAVORITE BOOKS Bundle conductors are used for transmission purpose as it helps in obtaining better voltage regulation and efficiency by reducing the inductance and skin effect present in the power lines.As inductance is reduced and capacitance is increased (due to self GMD) so surge impedance reduces and hence maximum power that can be transmitted is increased. so voltage regulation improves (decreases). These causes considerable losses in transmission line. http://electricalbaba. There are many advantages of using bundled conductors in transmission lines. Reduced Corona Loss: There is a optimum spacing between sub conductors of a bundled conductor which give minimum gradient on the surface of sub conductors and hence highest critical disruptive voltage and hence reduced corona loss (see formula of corona loss in terms of critical disruptivevoltage) Reduced Surge Impedance: Surge Impedance of line is given as square root of (L/C) .