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Single Circuit PantherACSR Conductor
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What is ACSR cable?
Aluminium Conductor Steel ReinforcedOuter strand - AluminiumCenter strand - steelACSR having high conducting capacity usually used in overhead transmission line to carry high voltages.
What is the line loss of 4 ACSR when the voltage is 14400 volts?
It doesn't really matter what the distribution voltage is. Line loss is dependant on the current through the conductor. #4 ACSR (aluminum conductor, steel reinforced, used in electrical transmission), has a typical resistance of 0.399 ohms per 1000 feet, and a maximum ampacity of 140. At max load, the I^2 * R loss would be about 7.82kW per 1000 feet of cable, or about 123kW per mile of 3-phase distribution. A 14,400 volt 140A system delivers about 3.48MW at unity power factor, so this represents about a 3.5% loss per mile, which is why 14.4kV is used for distribution, not transmission. Most likely, the cable would reach thermal limit well before 140A, and so would never be loaded to the max ampacity, so this is the theoretical max. At a more reasonable current, line loss would be correspondingly less.
Why copper is used in electrical transmission line?
Copper is a good conductor and is fairly strong. It generally is not used in power transmission lines due to cost - generally aluminimum is used.
What are the round ball like structure on the topmost line in power transmission lines?
The topmost conductor in a transmission line is called the guard conductor; it is an earthed (grounded) conductor that links the metal support towers. Its function is to protect the transmission lines against lightning strikes. The coloured balls that are sometimes seen distributed along the guard conductor are intended to make the lines easier to see in those areas where aeroplanes might be flying -they are often seen on lines in the vicinity of airfields. They are also used in areas, such as nature reserves, to make the lines visible to large birds.
How many volts can transmission wire carry?
Transmission voltages are usually considered to be 110 kV and above. Where higher capacity is needed the line conductors are grouped in to three and four groups per phase leg. Voltages less than 33 kV are usually used for distribution by the utility companies.The utility company then supplies the transformers to drop the voltage even lower so that it can be brought to homes to be used by their customers.The transmission lines are of a composite arrangement. ACSR, Aluminium Conductor Steel Reinforced.
Why transmission line voltage is like 6.6kv 11kv22kv 33kv etc?
Usage of such high voltages will increase the efficiency of the transmission lines and decreases the losses in the line. It also reduces the requirement of conductor size.
What are the effects of being at end of 33KV transmission line?
The effects of being at the end of a 33KV transmission line will result in a higher voltage. This is due to variation in the perameters that dictate how the transmission is sent and received.
What is ACSR cable?
Aluminium Conductor Steel ReinforcedOuter strand - AluminiumCenter strand - steelACSR having high conducting capacity usually used in overhead transmission line to carry high voltages.
What is Indian railway transmission line voltage?
220v, 415v, 6.6 kv, 11kv,33kv,132kv,400kv
Why neatural ground resistor using in 33kv transformer?
The function of a neutral earth resistor is to limit any fault current resulting from fault between a line conductor and earth.
Why is aluminium used to make transmission wires?
The lightness of the material allows for longer spans between supports. This in turn is a big money saving factor in the construction of transmission lines.The type of conductor is ACSR, Aluminium Conductor Steel Re enforced. The steel in the conductor is in the center of the conductor and the aluminium conductors are wrapped around the steel.The steel allows for the longer spans and helps prevent conductor sag on hot days or when the line is carrying a heavy connected load that will apply heat to the conductor.
Why only 11kv is used in power systems transmission line?
It isn't. In the UK, transmission and distribution voltages are 400 kV, 275 kV, 132 kV, 66 kV, 33kV, and 11 kV.
What is the unit length impedance of panther conductor in transmission line?
2.9
Why transposition tower in long transmission line?
In transmission line minimum 3 conductors are run in parallel. Every conductor has a flux which produce losses in other conductor which is run with parallel. So in the middle one conductor the losses is double in respect to other two conductors. At the end of the line the voltage of the middle one conductor is reduced from other conductors due to these losses. The transposition tower is used to change the conductors. By using these tower we shift each conductor position. So we use these towers in long transmission line so that these losses becomes equal for each conductor. and voltage will be almost equal at the end of the transmission line. Regards. Vishal kr. Sharma. (Simplex infrastructures ltd, Power Transmission & Distribution division)
Sag produced in the conductor of a transmission line depends on?
-The tension of the cable (the tighter, the less sag, but this can cause other problems if too tight) -The temperature outside (the higher the temperature, the more it will sag) -The amount of current flowing through the cable (the more current, the hotter the conductor will get = more sag) -The type of cable (aluminimum will sag more than copper; ACSR will sag less than straight aluminimum).
Cg electricity board junior engg result?
what is the value of the capacitance in the transmission line to earth, i know it is different for different values ,i mean for 11KV,33Kv and so on, but don't know how much
Explain the transmission and distribution of electricity from the generation station to the consumer?
transmission and distribution of electricity are the way of regulate voltage to the minimum rate in which can be benefit to the consumers. From generating station , voltage generated is up 16/25kv which step up upto 330kv this generating voltage now step down in the transmission station through the step down transformer which is 132kv this voltage now transmitting to distribution station where voltage now step down to 33kv, this 33kv now stepdown to 415v for three line and 240/220v for a line for the uses of consumers.
